{"Bibliographic":{
"Title":"Alaska Fisheries Science Center Quarterly Report : October, November, December, 1992",
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"Publication date":"1992",
"Publisher":"Alaska Fisheries Science Center (U.S.)"
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"Language":"English",
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    "content": "RIC\nNOAA\nDEPARTMENT\nNational Marine Fisheries Service U.S. DEPARTMENT OF COMMERCE\nAlaska Fisheries Science Center\n4\nECEIVE\n1\nJAN 1-004\nNATIONAL MARINE FISHERIES SER. TIBURON LABORATORY LIBRARY\n-\n1.5\nQuarterly Report October-November-December 1992\nALASKA FISHERIES SCIENCE CENTER\n7600 Sand Point Way N.E., Bin C15700, Building 4, Seattle, WA 98115-0070\nScience and Research Director: William Aron Deputy Director: James Balsiger\nAUKE BAY LABORATORY (ABL) .\nDirector: George R. Snyder\nNATIONAL MARINE MAMMAL\n......... Director: Howard W. Braham LABORATORY (NMML)\nOFFICE OF FISHERIES\nDirector: J. Theodore Rodgers INFORMATION SYSTEMS (OFIS) ..... .....\n......\nRESOURCE ASSESSMENT AND CONSERVATION\nDirector: Gary D. Stauffer ENGINEERING (RACE) DIVISION\nFacilities Director: Robert S. Otto Kodiak Investigations-Research\nRESOURCE ECOLOGY AND FISHERIES\n.... Director: Richard J. Marasco MANAGEMENT (REFM) DIVISION\n.\nThe Quarterly Report is compiled by the AFSC Publications Unit, Susan Calderón (editor). To change your delivery address or to cancel delivery, please notify: Quarterly Report, Alaska Fisheries Science Center, 7600 Sand Point Way N.E., Bin C15700, F/AKC, Seattle, WA 98115-0070, Phone (206) 526-4283.\nPUBLICATION LIMITATION. Publication in whole or in part of the Quarterly Report should indicate the provisional nature of the findings and show credit to the appropriate research division of the AFSC. Advance copy should be submitted to the AFSC.\nReferences to trade names do not imply endorsement by the National Marine Fisheries Service.\n.\nTable of Contents\nFEATURE The Blue Whales of the Southeastern North Pacific Ocean\n1\nAUKE BAY LABORATORY (ABL) 4 Water Quality Data Collected in Dutch Harbor ... New Information on Coho Distribution and Abundance in Taku River ... Long-Term Changes on Two Populations of Chum Salmon ... Time Series Models Combined With Kalman Filter ... Progress in Salmon Stock Identification ... Currents on Seamounts May Relate to Salmon-Driftnet Interactions\nNATIONAL MARINE MAMMAL LABORATORY (NMML)\n7\nGray Whale Census ... NPTZ Ecosystem Study\nRESOURCE ASSESSMENT AND CONSERVATION ENGINEERING (RACE) DIVISION 8\nBering Sea Groundfish Assessment Subtask ... Yellowfin Sole Maturity ... Japan-U.S. Longline Survey Data in RBASE Format ... 1992 West Coast Continental Slope Bottom Trawl Survey ... Shellfish Assessment (Kodiak) ... Recruitment Processes Fisheries-Oceanography Coordinated Investigations (FOCI) Task\nRESOURCE ECOLOGY AND FISHERIES MANAGEMENT (REFM) DIVISION 15\nSocioeconomic Assessments ... King and Tanner Crab Research ... Status of Stocks Task ... Age and Growth Studies ... Trophic Interactions Program ... U.S. Fisheries Observer Program\nITEMS\n22\nPices Holds Annual Meeting\nGENERAL ACTIVITIES\nAwards ... Public Service and Cooperative Activities ... Meetings and Presentations\n23\nPUBLICATIONS AND REPORTS\nBY CENTER AUTHORS\n27\nPublications ... Technical Memorandums ... Processed\nReports\nFEATURE\nPhoto by K.C. Balcomb\nAmong the great whales, the ror- quals, which include the blue, fin, sei, minke, and humpback whales, are noted for their long annual mi- grations. In general, most rorqual populations spend the summer in the cool, highly productive waters at high latitudes or in cool eastern boundary currents, where they feed heavily. From there they mi- grate south to their winter grounds in warm, temperate or tropical wa- ters, where they fast for several months. When biologist Allen Wol- man of the National Marine Mam- mal Laboratory and I began to study the populations of the great whales in the eastern North Pacific Ocean in the late 1950s and the 1960s, we found that the fin, sei, and humpback whales followed this annual cycle but that blue whales did not. As a result, one of our main research objectives has been to determine the migratory\nThe Blue Whales of the Southeastern North Pacific Ocean\npatterns of the blue whales of the Southeastern North Pacific Ocean.\nThe whalers of the 19th century were aware of the presence of blue whales off the coasts of California and Baja California, Mexico, but they almost never attempted to at- tack such huge, powerful animals with their hand harpoons. One ex- ception was Charles Scammon, an American whaling captain known for discovering the calving la- goons of the gray whales along the coast of Baja California. In his classic volume The Marine Mam- mals of the Northwestern Coast of North America (1874), Scammon described how he encountered\nlarge numbers of blue whales off Isla Cedros, Mexico, in July 1858, and managed to kill several of them with a darting-gun and bomb lance (such as the Alaskan Eski- mos still use to take bowhead whales). Shortly thereafter, Cap- tain Thomas Roys, of arctic whal- ing fame, invented the whaling rocket. In the summer of 1878, two entrepreneurs, J. N. Fletcher and R. L. Suits, made improvements on Roys' weapon and succeeded in killing 35 whales off San Francisco; their catch included blue whales as well as humpback and fin whales.\nAfter the harpoon cannon was invented by the Norwegian Sven Foyn, the blue whale, because of its size, became the preferred tar- get of the whaling industry world- wide. The rapidly expanding industry reached Baja California in the winter of 1913-14, when the Norwegian factory ship Capella I,\nAFSC Quarterly Report\n1\noperating out of Bahia Magdalena, Mexico, took 83 blue whales. Cap- tain Andreas Ingebrigtsen pub- lished an account of how he found the blues migrating south at the end of October, and passing again going north from April to June.\nThe first modern shore whaling stations in California were opened at Moss Landing in 1918, and at Trinidad in 1920. Both operated until 1926. Only three blue whales were taken by these stations.\nNorwegian whalers returned to Baja California in a big way during the winter seasons of 1924-25 to 1928-29 with the floating factory ships Kommandoren I, Mexico, and Esperanza; one American ves- sel, the Lansing, operated there in 1928-29. These ships operated from protected anchorages, like mobile shore stations rather than the huge pelagic factory ships of later years. Again, they operated mostly out of Bahia Magdalena but also worked as far south as the Islas Tres Marias and north into the Gulf of California. They killed 942 blue whales during the five sea- sons. The Esperanza returned early in 1935 and killed 47 more blue whales from Bahia Magda- lena north to San Clemente Island. The companies' daily records show that these whalers found few blue whales in October and almost none from November to January; the vast majority were killed from February to early July, with a peak in May.\nFrom 1927 to 1930, the Lansing operated mainly off southern Cali- fornia and killed 295 blue whales in 3 years (no data are available for 1930). From 1932 to 1937, another American factory ship California was whaling between San Diego and Point Reyes, California. Al- though this ship doubtless took some blue whales, no breakdown by species is available except for 1937, when eight blues were killed.\nTrinidad Eureka\nSan Rafael Richmond\nFarallon Is .**\nCALIFORNIA\nSan Clemente I.\nPacific Ocean\nMEXICO\nIsla Cedros /\nBAJA CALIFORNIA\nBahla Magdalena\nGulf of California\nCabo San Lucas\nIslas Tres Marias \".\nMap shows the area where southeastern North Pacific blue whales range.\nNo blue whales were taken by a shore whaling station that oper- ated at McNears Point near San Rafael, California, in 1939 nor by another that operated at Fields Landing, near Eureka, from 1940 to 1944, 1947 to 1949, and in 1951.\nThe Del Monte Fishing Com- pany opened a whaling station at Point San Pablo, Richmond, Cali- fornia, in 1956, and the Golden Gate Fishing Company opened another one virtually next door in 1958. From 1959 to 1970, Wolman\nand I conducted biological re- search on whales landed at these stations. Twenty-six blue whales were landed in 1958, and an addi- tional 22 from 1959 to 1965, after which the capture of blue whales was proscribed by the Interna- tional Whaling Commission. A few of these blues were taken as early as May, but most were killed in September and October. From 1966 to 1970, the catcher-boat captains kept records for us of their sightings of protected spe-\nOctober-November-December 1992\n2\ncies of whales. They spotted blue whales every year and in 1970 re- ported 195 sightings (some doubt- less repeat sightings of the same animals). From 1980 to 1983, cetologist Tom Dohl and his col- leagues at the University of Califor- nia, Santa Cruz, conducted regular aerial surveys of cetaceans off central California between Point Conception and Cape Mendocino; they saw many blue whales and found the same pattern of sea- sonal distribution that we had noted in the 1960s.\nBeginning in 1962, I conducted many whale marking cruises dur- ing the winter and spring months off the west coast of Mexico. I was happily surprised to find that a goodly number of blue whales still ranged all along the west coast of Baja California, mainly from March through June, and also in the southern Gulf of California from January to March. Another link in the blue whale's migration pattern appeared in March 1975 during a marking cruise aboard the Soviet whaler Vnushitelnyi when Russian biologists and I discovered blue whales in the eastern tropical Pa- cific at lat. 9 °N, long. 94°W. About the same time, porpoise observers aboard tuna fishing vessels also sighted blue whales in the same general area.\nAt one time I thought that the blue whales off California and Baja California were the same animals that spent the late summer in the Gulf of Alaska. As more data accu- mulated, this hypothesis became untenable, and I am now con- vinced that these California blues constitute a discrete local popula- tion that ranges seasonally be- tween central California and the Cabo San Lucas region of Mexico. This idea is supported by the abun- dance of certain warm-water epi- zoites on the California blue whales: the suckerfish Remora australis, the barnacle Xenobalanus globicipitis, and the copepods Pennella balaenopterae and Balaenophilus unisetis. In contrast, I have rarely found these creatures on fin or sei whales taken off California, and our marking program revealed that these two species of whales mi- grate as far as the Gulf of Alaska. Wolman and I are currently analyz- ing all of our catch and sighting data in an attempt to draw a coher- ent picture of the migrations of southeastern North Pacific blue whales. This is difficult because the whales are nomadic and follow krill pastures, causing their travel routes and schedules to vary from year to year. Off central California,\nwe found that the whales feed solely on euphausiids - usually Euphausia pacifica but sometimes the more coastal Thysanoessa spinifera -whereas off Baja their main food source appears to be both the pelagic \"red crab\" Pleuroncodes planipes, which oc- curs periodically in immense swarms at the surface, and the eu- phausiid Nyctiphanes simplex.\nPhoto-identification studies of blue whales were conducted around the Farallon Islands, Cali- fornia, by the Cascadia Research Collective, Olympia, Washington, from 1986 to 1988, under contract to NOAA, and also in the Gulf of California off Loreto by the Mingan Island Cetacean Study, St. Lam- bert, Quebec, from 1982 to 1985, working independently. These re- search groups report that they have identified some of the same whales in both geographical areas. Besides revealing the movements of individual whales, studies like these may eventually permit an es- timate of the size of the southeast- ern North Pacific blue whale population -- perhaps one of only a few remaining viable populations of the earth's greatest animal.\nThis article was written by DALE W. RICE of the National Marine Mammal Laboratory.\nAFSC Quarterly Report\n3\nDIVISION AND LABORATORY REPORTS\nAUKE BAY LABORATORY (ABL)\nWater Quality Data Collected in Dutch Harbor\nStaff of the ABL and the NMFS Alaska Regional Office traveled to Dutch Harbor, Alaska, to collect water quality data in Captains Bay near a fish processor effluent out- fall and also in the vicinity of the city of Dutch Harbor. The trip was in response to reports received by the ABL of large numbers of juve- nile red king crab crawling out of Captains Bay and dying on the beach. During cursory beach sur- veys, the scientists observed many hundreds of king crab carapaces above the high watermark as well as a smaller number of moribund crabs. Oxygen measurements at depth were made at 15 sites; most sites had been measured pre- viously in June 1992. Oxygen lev- els were lower at the bottom at several sites compared to the June measurements. In June, none of the bottom samples had oxygen levels below 75% saturation. In late September, eight sites had ox- ygen levels less than 25% satura- tion, with the lowest oxygen value at 6% saturation. The scientists could not confirm the cause of the low oxygen environment but did confirm that the environment was severely stressed.\nThe preceding information was provided by LINCOLN FREESE.\nNew Information on Coho Distribution and Abundance in Taku River\nThe primary research effort in 1992 of the Stock Assessment Task has been the study of distri- bution and abundance of coho salmon (Oncorhynchus kisutch) in the Taku River, a transboundary\nU.S .- Canada river with headwaters in British Columbia. The research program was developed bilaterally with the Canada Department of Fisheries and Oceans and the Alaska Department of Fish and Game as part of the Pacific Salmon Treaty through the Pacific Salmon Commission Transboundary River Technical Committee.\nThe study began in mid-August and ran until late October with a field crew operating from a tent camp at Taku Point in the estuary. The seven-person crew deployed drift gill nets and captured 619 re- turning adult coho salmon and placed radio tags in 354 fish which were released in the lower river. Another 60 fish were released with radio tags at Canyon Island, near the U.S .- Canada border, following capture in fish wheels there. A fully operational system of 22 station- ary tracking towers covered main tributaries and key points for fish passage in the whole Taku River drainage. The tracking towers de- tected, decoded, and stored radio- tag information and transmitted the information via a NOAA satel- lite relay to the ABL every 3 hours.\nMost of the 400-plus radio- tagged coho salmon resumed up- river migration within a few days of tagging, and most continued into Canada. A late-season helicopter survey of spawning areas along the mainstem Taku River on 1 De- cember located 141 radio-tagged coho salmon, with 106 in Canada and 35 in the United States. Twenty-five fish were still alive and active: 23 in Canada and 2 in the United States. In mid-December 1992, the Task began analyzing findings and compiling results to show the distribution and migra- tions of radio-tagged fish that were followed on the Taku River in 1992.\nThe study findings showed that gill nets worked well to capture\nadult coho salmon, with low inci- dence of injury related to capture, and tagged fish quickly resumed upriver movement. The stationary tracking system with satellite relay worked well in its first full season of operation. Task members were able to follow migration of a major coho run in a large, remote glacial river system from start to end of the run through severe and extreme weather conditions. This was a first.\nThe preceding information was provided by JAMES OLSEN.\nLong-Term Changes on Two Populations of Chum Salmon\nScientists at the ABL have sam- pled two populations of chum salmon (O. keta) in North America for 20 years (1972-92) to evaluate long-term changes in growth and size and age at maturity. One pop- ulation is from Fish Creek, a tribu- tary of the Salmon River near Hyder, Alaska, at the head of Port- land Canal. Chum salmon from this area are renowned for their large size. The other population is a hatchery population from the Quilcene National Fish Hatchery (U.S. Fish and Wildlife Service) on Hood Canal in Puget Sound, Washington.\nMaturing chum salmon return to Fish Creek starting in late June, and by early October only a few fish are still entering the stream. Quilcene Hatchery chum salmon arrive much later in late November, and by early January the run is mostly over. Comparing age-4 males, both populations show a strong decline in size at maturity (Figs. 1 and 2). At the same time, the average age at maturity for both populations is increasing as growth decreases. This trend has been especially strong since the late 1980s. Data from Japanese\nOctober-November-December 1992\n4\nFISH CREEK - MALES\n700\n700\nMEAN\nH\n95% CONFIDENCE INTERVAL\n675\nMEAN LENGTH (MM) OF AGE 4 CHUM SALMON\n650\n650\n625\n625\n600\n600\n575\n575\n. 550\n550\n525\n525\n500\n500\n1970\n1975\n1980\n1985\n1990\n1995\nYEAR OF RETURN\nFigure 1. The mean length of age-4 chum salmon males from Fish Creek, 1972-92.\nQUILCENE HATCHERY - MALES\n700\n700\n675\n675\n95% CONFIDENCE INTERVAL\n650\n650\n625\n625\n600\n600\n575\n575\n550\n550\n525\n525\n500\n500\n1970\n1975\n1980\n1985\n1990\n1995\nYEAR OF RETURN\nFigure 2. The mean length of age-4 chum salmon males from Quilcene Hatchery, 1972-92.\nchum salmon research also show this trend. The decrease in size seems to relate to anomalies in climate change; however, density- dependent factors in the ocean may also play a role. If the trend of decreasing size at maturity contin-\nues, it could signal a major change to lower survival rates than have been seen in recent years.\nThe preceding information was provided by JOHN HELLE and MARGARET HOFFMAN.\nTime Series Models Combined With Kalman Filter\nScientists at the ABL recently completed studies showing how simple biomass dynamics models can be used to assess physical magnitude and potential produc- tion of a fish stock if adequate time series of abundance measures and catches are available. Fitting biomass dynamics models to these time series for estimating un- known parameters requires recog- nizing both process and measurement errors. The Kalman filter, combined with state-space models of biomass dynamics, pro- vides the analytical basis for such fitting. After parameters are esti- mated, the filter can be used to estimate current physical condi- tion of the stock: biomass, ex- pected production of biomass during the next year, and biomass at year's end under the chosen harvest level. Further, fixed- interval smoothing revises esti- mates of biomass from the beginning of observation to in- clude information to the present. Two applications illustrate the methodology. First, the Schaefer model is fit by Kalman filtering to time series of catch and abun- dance indices from the yellowfin tuna fishery of the eastern Tropical Pacific Ocean. Relative magni- tudes of resulting estimates of an- nual production and standing stock are more consistent with what has been observed in wild fish populations than are past as- sessment estimates from alterna- tive estimation procedures. Differences in 1-year forecasts of yellowfin tuna biomass, if either process or measurement error is assumed to be responsible for dis- crepancies of observed and fitted abundance indices, emphasize the importance of distinguishing\nAFSC Quarterly Report\n5\n675\nMEAN LENGTH (MM) OF AGE 4 CHUM SALMON\nMEAN\nForecasts of Yellowfin Tuna Biomass\n1600\nNo Measurement Error\nBiomass (Millions of Pounds)\nNo Process Error\n1400\n1200\n1000\n800\n600\n400\n1935\n1940\n1945\n1950\n1955\n1960\n1965\nBeginning of Year\nFigure 3. Forecast histories of yellowfin tuna biomass in the eastern Tropi- cal Pacific Ocean, 1934-67.\nSouthern Southeast Alaska Pink Salmon Catches\n50\n+0.3\n* = temperature anomaly\n+0.2\n40\nCatch (Millions of Fish)\n+0.1\n30\n*\n0.0\n20\n-0.1\n*\n10\n-0.2\n0\nTemperature Anomaly (Degrees Celsius)\n-0.3\n1920\n1930\n1940\n1950\n1960\n1970\n1980\n1990\nYear\nFigure 4. Pink salmon catches off southern Southeast Alaska, 1917-91; smoothed estimates of expected catch based on the random trending recruit- ment model; and temperature deviations of northern hemisphere land masses.\nbetween the two causes (Fig. 3). Second, a random trending re- cruitment model is fit to pink salmon catches in southern South- east Alaska, 1917-91, and the ex- pected catches are produced by fixed-interval smoothing. Temper- ature anomalies of the Northern\nHemisphere land masses trend similarly to the expected catches since the 1930s, indicating large- scale climate changes may under- lie the production trend (Fig. 4).\nThe preceding information was provided by JAMES OLSEN.\nProgress in Salmon Stock Identification\nThe U.S .- Canada Salmon Pro- gram has been involved in stock identification activities in northern British Columbia and Southeast Alaska since 1982. Major efforts were made to establish baseline information on sockeye (O.nerka), chum, and pink salmon (O. gorbuscha). Baseline information on chinook salmon (O. tshawytscha) was concentrated in Southeast Alaska. Although ef- forts were focused on genetic stock identification (GSI), baseline information on parasites and scale characteristics that could be used for stock identification were also pursued. For sockeye salmon in particular, the combination of GSI, parasites, and scale characteris- tics has proved to be a potentially powerful tool for differentiating stocks.\nThe status of genetic informa- tion by species follows:\nChum salmon - Tissue sam- ples from chum salmon popula- tions were collected from 1986 to 1990 from northern British Colum- bia to northern Southeast Alaska. These samples have been ana- lyzed by starch-gel electrophore- sis in the laboratory. The allelic frequency data obtained from this technique are being analyzed to determine the extent of genetic dif- ferentiation that occurs between chum salmon populations. A re- port of the results of the work with chum and other salmon species will be presented at the interna- tional symposium \"Genetics of Subarctic Fish and Shellfish\" to be held in Juneau in May 1993.\nSockeye salmon - Tissue sam- ples were collected from 52 sock- eye salmon spawning locations\n6\nOctober-November-December 1992\nfrom 1982 to 1990. Preliminary data analysis of gene frequency data obtained from starch-gel electrophoresis has been com- pleted and shows promising re- gional differentiation. Some rare alleles were found that should be useful in genetic stock identifica- tion. A report of the results is ex- pected in 1993.\nPink salmon - The analysis of even-year pink salmon from Japan, Russia, and Alaska was re- peated to include two additional collections from Kamchatka (Rus- sia). Analysis of the genetic differ- ences between populations revealed that fish from east and west Kamchatka can be differenti- ated and that fish from Japan and Sakhalin Island are genetically very similar. The greatest genetic difference was found between Alaska fish and Asian fish. Certain loci were particularly useful for dis- tinguishing between regions.\nChinook salmon - Tissue sam- ples were collected from chinook salmon in about 25 river and tribu- tary systems in Southeast Alaska. Laboratory analysis has been completed for about half the sam- ples and should be completed for all the samples by spring 1993. Preliminary analyses show that ex- cellent regional differentiation ex- ists.\nThe preceding information was provided by JAMES OLSEN.\nCurrents on Seamounts May Relate to Salmon-Driftnet Interactions\nLittle information is available on the physical environment of the Northern Emperor Seamount Chain (NESC). Present theory is that surface currents are deflected by the chain and quasi-stationary rotating columns (Taylor columns) of water develop on some of the\nseamounts. The subarctic frontal zone may also be trapped by the chain and intensified in the nearby region. It is likely that increased salmon abundance over the NESC and the resulting large bycatches of salmon observed in the 1990 Japanese squid driftnet fishery are associated with these physical characteristics.\nA joint study by the ABL and the University of Alaska was initiated in summer 1992 on the biological and physical interactions associ- ated with the NESC. Field activi- ties were completed from the Japanese research vessel Hokusei Maru for the collection of physical oceanographic data in conjunction with Hokkaido Univer- sity of Japan. This data included conductivity, temperature, and depth profiles (CTDs); expendable CTDs (XCTDs); and surface drift- ing buoys. Sea level, height, and temperature data from satellite- borne sensors were also collected as part of the study.\nThe buoys deployed from the ship are part of a much larger proj- ect called WOCE (World Ocean Circulation Experiment), which is processing the data from the satel- lite-tracked drifting buoys. Seven buoys were deployed along the long. 170°E trackline, from lat. 48°N to 38°N. Two other buoys were deployed, one west of the seamounts at long. 155°E and the other east of the seamounts at long. 175°E. The initial drifter data support our model of current flow in the NESC region. The analysis of the drifter data identified anti- cyclonic motion over the Nintoku Seamount that may be generated by a Taylor column. Continued monitoring of the drifters will pro- vide additional information on sur- face current flow over the NESC, which will lead to a combined anal- ysis (with CTD and altimeter data)\nof the current structure of the NESC.\nThe preceding information was provided by JIM MURPHY and STEVEN IGNELL.\nNATIONAL MARINE MAMMAL LABORATORY (NMML)\nGray Whale Census\nThe NMML, in cooperation with the Southwest Fisheries Science Center (SWFSC) and the NMFS Southwest Regional Office, initi- ated a study on 7 December 1992 to census gray whales in the eastern North Pacific Ocean dur- ing their southbound migration. The census is being conducted from shore and aerial surveys at Granite Canyon, California. The shore survey was initiated on 9 De- cember and will continue through 8 February 1993. Four people will rotate observer duties from two in- dependent stations, approxi- mately 25 m above the water. To improve the accuracy of pod-size estimates from shore and to deter- mine the offshore distribution of migrating whales, aerial surveys will be conducted 5-15 January. During the first few days of the survey, sightings were reported for gray whales, blue whales, and humpback whales.\nThe last such census of gray whales was conducted in the win- ter of 1987-88. The resulting pop- ulation estimate was 21,113 (se=688). This population, also known as the California stock of gray whales, was recently delisted from the Endangered Species Act (ESA). This year's work is the first activity under the required ESA monitoring program for delisted species. The results of this survey will lead management to important considerations, such as: Is the\nAFSC Quarterly Report\n7\nCalifornia stock still increasing? What is the current abundance level? Is there any evidence over the past 20 years that the rate of increase is slowing (as would be expected when the population ap- proaches its carrying capacity)? Is there any evidence that the av- erage condition of animals in the population is changing as the pop- ulation recovers?\nNPTZ Ecosystem Study\nAn analysis of the trophic dy- namics and community structure of the fauna of the North Pacific Transition Zone (NPTZ) was initi- ated with the High-Seas Driftnet Programs at the ABL, the Honolulu Laboratory (SWFSC), and MBC Applied Environmental Sciences of Costa Mesa, California. The project will compile and review the available information on species in the NPTZ and convene a work-\nshop to explore approaches to modeling the NPTZ ecosystem.\nThe preceding information was provided by DOUGLAS De MASTER.\nRESOURCE ASSESSMENT AND CONSERVATION ENGINEERING (RACE) DIVISION\nBering Sea Groundfish Assessment Subtask\nThe eastern Bering Sea crab- groundfish bottom trawl survey has traditionally been conducted using a sampling plan based on a 20 by 20 nautical mile (nmi) grid. Trawls are made near the center of the grid blocks with some addi- tional sampling at the corners of the grid near the Pribilof Islands and St. Matthew Island (Fig. 1).\nThese surveys have been con- ducted using at least two vessels. Since the early 1980s, the plans called for each vessel to complete alternating columns of stations while working from inner Bristol Bay westward toward the edge of the continental shelf. Any differ- ences in relative fishing power of the vessels has been compen- sated for by mathematical analy- ses of distributions of catches by each vessel.\nDue to potential budget cuts in FY93, the Bering Sea Subtask has been investigating sampling schemes using only one vessel. The first part of this work has been to estimate the effects of only sam- pling every other column and whether odd or even numbered columns show significant differ- ences (for station identification purposes columns are numbered and rows are alphabetic). To eval- uate this approach, we used sur-\n180\n175\n170\n165\n160\n62 .\n62\nSt. MATTHEW IS.\n200 m\n100 m\nALASKA\n50 m\n60\nNUNIVAK\nIS.\n60\n58\n58\nALASKA PENINSULA\n- 56\nPRIBILOF IS.\n0,\n54\n54\n180\n175\n170\n165\n160\nFigure 1. Traditional sampling pattern used in the eastern Bering Sea crab-groundfish bottom trawl survey.\n8\nOctober-November-December 1992\n56\nveys from the annual time series of data beginning in 1982, separated the data between odd and even numbered columns (without using corner stations), and then esti- mated biomass for major species using each set of data. These re- sults were then compared with the estimates using the entire data set. Since fishing power differences are presently used only between vessels in the same survey and not between years, no fishing power corrections were used in this anal- ysis in order to present the worst- case scenario of using only one vessel.\nComparisons for four major species are shown in Figures 2 to 5. The results for walleye pollock (Theragra chalcogramma) show that, although an occasionally high deviation may occur, most of the differences over the time series are less than 15% (Fig. 2). A Student's t-test over the length of the time series for a mean difference of zero was not significant for either even or odd columns (p=0.612 and p=0.785, respectively). The dif- ferences for Pacific cod (Gadus macrocephalus) were all less than 15% over the entire series (Fig. 3). There was no significant difference from zero over the time series for either even or odd columns (p=0.841 and p=0.745, respec- tively). Both walleye pollock and Pacific cod are widely distributed across the shelf. Among species with more limited distributions is yellowfin sole (Pleuronectes asper), which also showed large differences during part of the time series (Fig. 4) but, over all, no sig- nificant difference from a mean of zero (p=0.513 for even columns and p=0.512 for odd columns). Sampling of Alaska plaice (P. quadrituberculatus), which has a relatively limited distribution, pro- duced large differences from the\n% DIFFERENCE FROM TOTAL SURVEY\nWALLEYE POLLOCK\n40\nEVEN COLUMNS\n30\nODD COLUMNS\n20\n10\n0\n-10\n////\n-20\nMEAN EVEN= - 1.95\nMEAN ODD= +1.04\n-30\n1981\n1982\n1983\n1984\n1985\n1986\n1987\n1988\n1989\n1990\n1991\n1992\n1993\nYEAR\nFigure 2. Percentage difference between biomass estimates for walleye pollock using the total survey data and estimates using odd and even colum samples.\nPACIFIC COD\n15\nEVEN COLUMNS\n10\nODD COLUMNS\n5\n0\n1\n11\n-5\n-10 -\nMEAN EVEN= +1.39 MEAN ODD= - 1.36\n-15\n1981\n1982\n1983\n1984\n1985\n1986\n1987\n1988\n1989\n1990\n1991\n1992\n1993\nYEAR\nFigure 3. Percentage difference between biomass estimatesfor Pacific cod using the total survey data and estimates using odd and even column sam- ples.\ntotal survey estimates (Fig. 5). The differences were almost entirely positive for even columns and neg- ative for odd columns. As ex- pected, these results were significantly different from a mean of zero for the years examined (p =. 008 for even columns and\np =. 009 for odd columns). This example probably illustrates not only the problems of sampling a fish of limited distribution with de- creased sampling density but also the effects of vessels with differ- ences in relative fishing power.\nAFSC Quarterly Report\n9\n% DIFFERENCE FROM TOTAL SURVEY\n1\n% DIFFERENCE FROM TOTAL SURVEY\nYELLOWFIN SOLE\n30\nEVEN COLUMNS\n20\nODD COLUMNS\n10\n0\n1\n-10\n-20\nMEAN EVEN= +3.17\nMEAN ODD= - 3.32\n-30\n1981\n1982\n1983\n1984\n1985\n1986\n1987\n1988\n1989\n1990\n1991\n1992\n1993\nYEAR\nFigure 4. Percentage difference between biomass estimates for yellowfin sole using the total survey data and estimates using odd and even column samples.\n% DIFFERENCE FROM TOTAL SURVEY\n50\nEVEN COLUMNS\n40\nODD COLUMNS\n30\n20\n10\n0\n1\n-10\n-20\n-30\nMEAN EVEN= +13.49\nZ\n-40\nMEAN ODD = - 12.40\n-50\n1\n1981\n1982\n1983\n1984\n1985\n1986\n1987\n1988\n1989\n1990\n1991\n1992\n1993\nYEAR\nFigure 5. Percentage difference between biomass estimates for Alaska plaice using the total survey data and estimates using odd and even column samples.\nThe final plan adopted for the 1993 survey will probably be a combination of several techniques designed to maximize the perfor- mance of a survey that must con- sider more species than accounted for in this analysis. The\nsurvey must also assess two im- portant species of king crabs (Paralithodes sp.) and two species of Tanner crabs (Chionoecetes sp.).\nThe preceding information was provided by GARY WALTERS.\nYellowfin Sole Maturity\nA total of 2,103 length-maturity observations for yellowfin sole were collected in June during the 1992 eastern Bering Sea bottom trawl survey. A five-point maturity scale was applied to females, and a four-point maturity scale applied to males.\nSampling occurred during a time when spawning was likely oc- curring, however, because sam- pling was conducted outside their nearshore spawning grounds (Fig. 6), few spawning yellowfin sole were observed. Subse- quently, most mature females were found in either a prespawning or spent condition.\nEquations relating length at sexual maturity are as follows:\nPL = 1/(1+ e -0.5600(L) + 12.4080) (males)\nPL = 1/(1+e -0.7946(L) +24.4468 (females) -\nwhere PL = the proportion of ma- ture fish at length L (TL in cm). Lengths at 50% maturity are 22.1 cm (SE =0.1796) and 30.8 cm (SE =0.0586) for males and fe- males, respectively (Fig. 7). Given that samples were collected out- side the spawning grounds where the highest concentrations of ma- ture yellowfin sole resided during the survey, it is uncertain whether these relationships are representa- tive of the population. This empha- sizes the need for sampling in more nearshore waters during the spawning period or sampling dur- ing winter months when yellowfin sole concentrate along the shelf edge and upper slope.\nThe preceding information was provided by GARY WALTERS.\n10\nOctober-November-December 1992\nALASKA PLAICE\n180\n175\n170\n165\n160\n62\n62\n+\n0\n0\n+\nALASKA\n60\n+\n+\n+\n58\n+\n58\n5\n56\n+\n+\n0.\n54\n54\n180\n175\n170\n165\n160\nFigure 6. Locations of yellowfin sole maturity collections(dots). Plus symbols indicate trawl locations sampled dur- ing the 1992 eastern Bering Sea bottom trawl survey.\n-\nJapan-U.S. Longline Survey Data in RBASE Format\nData collected annually from 1988 to 1992 in the Gulf of Alaska during the Japan-U.S. cooperative longline survey for sablefish and other groundfish species were re- cently compiled and added to a new longline survey database. Currently, data from the 1988-91 surveys of the Aleutian Island- Bering Sea region are being organ- ized for inclusion in that database. Cooperative survey data collected during 1992 from the Aleutian Islands-Bering Sea region already reside in the new database. The cooperative longline survey database is similar to that which contains NMFS longline survey data. Previously, cooperative longline survey data were accessi-\nble only on data forms, from indi- vidual computer files, or on stor- age tapes accessed through the Burroughs B-7900 mainframe computer. The new database will be temporarily stored on a PC in RBASE format as an intermediate step toward inclusion in a net- worked structured query language (SQL) server environment. Earth Science Data Information Man- agement (ESDIM) funding has been received to mount a modern, powerful, interactive database for the large volume of historical co- operative longline survey data, as well as for the 1987-92 and future collections from the NMFS long- line survey. Extensive editing will be conducted before the data are made public. In its final form, the database will allow researchers to access data from both longline\nsurvey databases more easily and much more quickly.\nThe preceding information was provided by HAROLD ZENGER.\n1992 West Coast Continental Slope Bottom Trawl Survey\nThe West Coast survey of con- tinental slope species dates back to 1984, when it was conducted to provide a benchmark of the distri- bution and abundance of sable- fish, Dover sole, thornyhead, and arrowtooth flounder stocks off the central coast of Oregon. That sur- vey was replicated in 1988 during two cooperative cruises involving investigations by both AFSC and SWFSC scientists to describe the structure of the continental slope groundfish community and to\nAFSC Quarterly Report\n11\n60\n+\nALASKA PENINSULA 00013\n56\nPERCENT MATURE\nMALES\n100\n90\nN=843\n80\n70\n60\n50\nL =22.1\n50\n40\n30\n20\n10\n0\n0\n5\n10\n15\n20\n25\n30\n35\n40\n45\nFEMALES\n100\n90\nN=1260\n80\n70\n60\n50\nL =30.8\n50\n40\n30\n20\n10\n0\n0 5\n10\n15\n20\n25\n30\n35\n40\n45\nTOTAL LENGTH (cm)\nFigure 7. Percentge of mature male (top) and female (bottom) yellowfin sole by length (cm). Curves represent the fitted logistic equation.\ngather data on the reproductive biology of key species. The suc- cessful completion of those initial cruises led to the expansion of slope species assessments to in- clude areas off California and Washington during fall cruises in 1989 through 1992. The most re- cent survey was completed 13\nNovember when the NOAA re- search vessel Miller Freeman re- turned from surveying the upper continental slope resources off Washington and northern Oregon. The objectives were to extend the investigation of the distribution and abundance of slope ground- fish resources to the Washington\ncoast, to continue collecting bio- logical data on selected species of commercial importance, and to further describe the community structure and relate it to physical oceanographic factors such as depth, temperature, and salinity.\nThe 1992 survey began 17 Oc- tober near Nitinat Canyon, west of Cape Flattery, Washington (Fig. 8). Sampling progressed from north to south, terminating off northern Oregon at lat. 45°30'N. A polyeth- ylene Nor'eastern trawl rigged with a heavy, rubber disk footrope was used to obtain samples from 78 bottom trawl stations. Oceano- graphic data were collected at 42 of these stations with CTD casts, and temperature profiles were ob- tained with XBTs at an additional 10 stations. Stations were laid out along east-west tracklines spaced 9 nmi apart between the depths of 100 and 700 fathoms (fm). Trawl hauls were 30 minutes long at sta- tions shallower than 400 fm and 1 hour long at stations deeper than 400 fm. Standard data collections included catch weights and num- bers, length distributions of all fish species, and specimen data from subsamples of target species and major components of the catch (i.e., sex, length, weight, maturity, stomach contents, gonadal-so- matic indices, and otoliths for age determination). Experimental use of electronic, bar-coded length- frequency recorders has pro- duced successful results, and by the second week of the survey, most of the length data were being collected with this equipment. Re- cording speed and accuracy seem to be substantially improved with this new application of existing technology.\nCatch rates of the target spe- cies in each of the six 100-fm depth strata are shown in Figure 9. As in other areas of the coast, the depth\n12\nOctober-November-December 1992\n-\nranges inhabited by the two spe- cies of thornyheads overlap, but shortspine thornyheads are more abundant in the shallower strata while longspine thornyheads are more abundant in deeper strata. In contrast to previous surveys when sablefish catches were greatest at middepths, on this oc- casion the highest catch rates for sablefish occurred in the shallow- est stratum. As was expected, arrowtooth flounder catch rates were higher in this region than in more southern areas near the southern extent of the species' range.\nCooperating scientists from the Center's Resource Ecology and Fisheries Management (REFM) Di- vision and the Oregon Department of Fish and Wildlife also partici- pated in the study. Further, Sub- task scientists collected data and specimens for the University of Washington for domoic acid stud- ies, Moss Landing Marine Labs for feeding and age and growth stud- ies of eelpouts and Pacific grena- diers, the REFM Division for reproductive biology studies of rougheye and shortraker rockfish, and the Washington Department of Fisheries for maturity studies and gonadal-somatic indexing of arrowtooth flounder.\nThe preceding information was provided by MARK WILKINS.\nShellfish Assessment (Kodiak)\nThe Bristol Bay red king crab fishery began on 1 November and closed 7 November with landings of 8.1 million pounds (Alaska De- partment of Fish and Game prelim- inary data). Landings were somewhat below the 10.3 million pound preseason guideline based on the 1992 eastern Bering Sea trawl survey. The fishery was val- ued at $40.5 million, as compared\n126 00W\n125 00W\n124 00W\nNitinat Canyon!\nJuan de Fuca Canyon\n100 fm\n500 fm\n48 00N\n×\n+\n+\n+\n+\n+\n. Quinault Canyon\n47 0ON\nGray's Canyon\n47 OON\nAstoria Canyon\n46 0ON\n46 00N\nOREGON\n+\n126 00W\n125 00W\n124 00W\nFigure 8. Stations sampled during Miller Freeman cruise 92-10.\nto $51.2 million in 1991. A record number of 281 vessels participated in the fishery, considerably ex- ceeding the previous record of 240 vessels set in 1991. The Pribilof Islands blue king crab fishery re- mained closed due to low stock abundance, which was again indi- cated by the survey. There has not been a king crab fishery in the Prib- ilof Islands since fall 1987. The St. Matthew Island blue king crab fish- ery opened 4 September for 72 hours. Landings were 2.4 million\npounds valued at $7.4 million, as compared to 3.4 million pounds and $9.0 million in 1991. Landings were below preseason guidelines of 3.3 million pounds and a record 174 vessels participated in the fish- ery. The Tanner crab (C. bairdi) fishery is in progress with landings of 23.5 million pounds, as com- pared to 19.7 million at this time last year. The guideline harvest level for this fishery is 39.2 million pounds. The snow crab (C. opilio) fishery has a guideline harvest\nAFSC Quarterly Report\n13\nCape Flattery\n48 00N\nWASHINGTON\n70\n60\nMean CPUE (kg/km)\n50\n40\n30\n20\nL\n10\nLongspine thornyhead Dover sole Sablefish Grooved Tanner crab Shortspine thornyhead Arrowtooth flounder\n0\n183\n366\n549\n732\n915\n1,098\n1,280\nS1\nS2\nS3\nS4\nS5\nS6\nDepth stratum (m)\nFigure 9. Mean CPUE (catch per unit of effort) (kg/km trawled) of the major slope groundfish species during the 1992 continental slope bottom trawl survey off Washington and northern Oregon.\nlevel of 207 million pounds and is dence with adequate food sup- scheduled to open 15 January.\nThe preceding information was provided by ROBERT OTTO.\nRecruitment Processes Fisheries- Oceanography Coordinated Investigations (FOC!) Task\nMembers of FOCI have been investigating the vertical distribu- tion of walleye pollock eggs and larvae in Shelikof Strait, Gulf of Alaska, using data from 36 MOC- NESS (Multiple Opening and Clos- ing Net and Environmental Sensing System) tows taken in April and May aboard the NOAA ship Miller Freeman in 1986-88. Understanding the vertical distri- bution of the eggs and larvae will help us as we investigate factors relating to their survival, such as drift with the currents and coinci-\nplies.\nMost eggs were found from below 150 m to near bottom at depths to 300 m. Complex pat- terns of differences in depths of eggs during development were noted. The egg vertical distribu- tion did not seem to vary in relation to observed differences in density of the ambient water. Larvae hatch while the eggs are at depth, but quickly rise to the upper 50 m of the water column where they re- main during larval development. Larger larvae (7-10 mm SL) un- dergo limited diel vertical migra- tion within the upper 50 m. They are deepest during the day, shal- lowest at dusk, slightly deeper at night, and even deeper at dawn. Their mean depths of occurrence were between 21 and 37 m at all times. At these depths, prey abun-\ndances (copepod nauplii) gener- ally were sufficient for larval pol- lock growth. Pronounced thermoclines and pycnoclines were present in the part of the water column inhabited by the lar- vae in late May. There was some indication that larvae remained below the upper mixed layer dur- ing periods of increased turbu- lence but at depths during daytime where light was sufficient for feed- ing and where prey densities were adequate. These results from sampling at sea correspond well to behaviors of the eggs and larvae observed by RACE scientists in laboratory experiments con- ducted at the Mark O. Hatfield Ma- rine Science Center, Newport, Oregon, (see feature article in AFSC Quarterly Report , July- August-September 1992).\n14\nOctober-November-December 1992\n.\n1\nThe preceding information was provided by ARTHUR KENDALL.\nRESOURCE ECOLOGY AND FISHERIES MANAGEMENT (REFM) DIVISION\nSocioeconomic Assessments\nThe Socioeconomic Assess- ments Task continued its work with the NOAA Office of Damage As- sessment Regulations in Washing- ton, D.C., to prepare the regulatory language supporting the im- plementation of the Oil Spill Pollu- tion Act of 1990. Responsibilities included developing economic text and guidance in preparation of regulatory language, Federal Reg- ister notices, and review of techni- cal submissions on economics and methodological issues, as well as review of and response to pub- lic comments to a series of Ad- vanced Notices of Proposed Rulemaking (ANPR) and public workshops.\nThe Task also continued the analyses and review of fishery management plan amendments for the Pacific and North Pacific Fishery Management Councils (PFMC and NPFMC, respec- tively).\n1. NPFMC Bering Sea- Aleutian Island (BS-AI) Amend- ment 24 Gear and/or Seasonal Allocations of Pacific Cod - An industry review draft was prepared describing the revisions that are planned for the environmental as- sessment-regulatory impact re- view (EA-RIR) for Amendment 24. The revised EA-RIR will be re- viewed by the Council in April; final action by the Council is scheduled for June 1993.\n2. NPFMC BS-AI Amendment 25 Allocating PSC Allowances to the Three Pollock Allocation Fish- eries - Task members revised a draft EA-RIR that evaluated the merits of establishing an explicit allocation of the BS-Al prohibited species catch (PSC) allowances among the onshore processing, at-sea processing, and community development quota walleye pol- lock fisheries. (Amendment 18 and Revised Amendment 18 es- tablished these three pollock allo- cation fisheries but did not address PSC allowances for them.) The Council recommended that 7.5% of each pollock-fishery PSC allow- ance be split among the commu- nity development quota recipients on the basis of their pollock alloca- tions. If approved by the Secretary of Commerce, this could be a pilot program for individual bycatch quotas.\n3. NPFMC BS-AI Revised Amendment 18 Inshore/Offshore Pollock Allocation off Alaska - Task members assisted in re- sponding to public comments on this amendment and provided a detailed technical review of the final supplemental EIS-RIR. The revised amendment, partially ap- proved by the Secretary of Com- merce, will result in the following allocation of the BS-Al walleye pol- lock total allowable catch (TACs) for 1993-95: community develop- ment quota fishery 7.5%, onshore processing fishery 32.375%, and at-sea processing fishery 60.125%\n4. NPFMC Halibut and Sable- fish Individual Transferable Quota (ITQ) Amendments - Task mem- bers assisted Alaska Region and NPFMC staffs in preparing regula- tions for the halibut and sablefish ITQ programs recommended by the NPFMC. The amendments are being reviewed by the Secretary of Commerce, and a final decision is\nexpected by the Secretary by 19 January. If the amendments are approved, the ITQ programs would be implemented by the start of the 1995 halibut and sablefish fixed-gear fisheries and would be the largest ITQ programs in the U.S. exclusive economic zone.\n5. PFMC Halibut and Sablefish ITQ Amendment - A preliminary analysis of options for initial alloca- tion of sablefish ITQs was pre- pared and presented to the Scientific Statistical Committee, the Advisory Panel, and the council in November.\n6. PFMC Groundfish License Limitation Amendment - An anal- ysis of alternative capacity repre- sentations was prepared for the Northwest Region.\nIn addition to efforts in support of the regional councils, task mem- bers reviewed Saltonstall-Kennedy and Sea Grant research propos- als, Alaska Sea Grant papers, and a seafood markets and trade pro- posal for the Oregon State Univer- sity Agricultural Experiment Station.\nThe preceding information was provided by JOE TERRY.\nKing and Tanner Crab Research\nForecasts of crab catches were developed from analyses of the 1992 Bering Sea crab survey data for king, Tanner (C. bairdi), and snow (C. opilio) crab stocks for 1993-96. Based on prerecruit abundance estimates from the 1992 survey, red king crab catches from the Bristol Bay stock are ex- pected to remain in the 5-15 million pound range for the 1993-95 sea- sons. Catches of Bering Sea C. bairdi should remain at the 35-45 million pound level for 1993 and 1994, then decrease to the 15-25 million pound level in 1995.\nAFSC Quarterly Report\n15\nCatches of C. opilio are expected to decrease to the 100-150 million pound level for 1994 and 1995 sea- sons and then increase to the 200- 250 million pound level in 1996. Work was begun on the status of stocks analysis for 1992.\nThe preceding information was provided by JERRY REEVES.\nStatus of Stocks Task\nStock assessments prepared for the NPFMC\nMembers of the Status of Stocks Task presented their annual stock assessment documents at the NPFMC Gulf of Alaska (GOA) and BS-Al Plan Team meetings, which were held at the Center in November. The major agenda items were stock assessments for the various species managed under the groundfish fishery man- agement plans, compilation of the 1992 stock assessment and fish- ery evaluation (SAFE) reports, and final recommendation of accept- able biological catch (ABC) levels for the 1993 season. The SAFE reports summarize the best avail- able scientific information con- cerning the past, present, and possible future condition of groundfish stocks and fisheries under federal management. The NPFMC uses the SAFE reports and other information to determine final ABCs and TACs (see Tables 1 and 2) for the groundfish fisheries in the GOA and BS-Al regions.\nA summary of the major changes in the final ABCs between 1992 and 1993 in the GOA region is as follows (Table 1). The ABC for walleye pollock increased from 99,400 t to 160,400 t (an increase of 61%), due primarily to a new\nanalysis indicating that the previ- ous exploitation rate was too con- servative. The ABC for slope rockfish was split into two compo- nents, one for northern rockfish (1993 ABC = 5,670 t) and one for the remainder of the complex (1993 ABC = 8,300 t). The split was implemented in order to pro- vide additional protection for northern rockfish. The ABC for thornyhead rockfish decreased from 1,798 t to 1,180 t (a decrease of 34%), due primarily to a change in the estimate of the natural mor- tality rate.\nA summary of the major changes in the final ABCs between 1992 and 1993 in the BS-Al region is as follows (Table 2). The ABC for walleye pollock decreased from 1,646,600 t to 1,440,700 t (a de- crease of 13%), due primarily to a decrease in abundance indicated by trawl surveys. The ABC for Pa- cific cod decreased from 182,000 t to 164,500 t (a decrease of 10%), again primarily due to a decrease in abundance indicated by trawl surveys. The ABCs for yellowfin sole, arrowtooth flounder, and rock sole all decreased substan- tially in response to a change in exploitation strategy. The yellowfin sole ABC decreased from 372,000 t to 238,000 t (a de- crease of 36%), the arrowtooth flounder ABC decreased from 82,300 t to 72,000 t (a decrease of 13%), and the rock sole ABC de- creased from 260,800 t to 185,000 t (a decrease of 29%). The ABC for Atka mackerel increased from 43,000 t to 117,100 t (an increase of 172%), due primarily to a greatly increased estimate of biomass.\nThe preceding information was provided by RICHARD METHOT.\nAge and Growth Studies\nFrom January to December 1992, the Age and Growth Task estimated the ages of groundfish species for 1,327 rock sole, 363 rex sole, 1,254 yellowfin sole, 9,294 walleye pollock, 4,237 Pacific cod, 3,403 sablefish, 827 Atka mack- erel, 5,104 Pacific whiting, and 1,908 Pacific ocean perch, for a total of 27,717. In addition 7,730 fish were reexaminied, 3,851 were reread, and 875 were examined and determined to be unreadable.\nIn cooperation with the NMML, radiometric counting equipment was purchased initially to support work on the age validation of rockfishes (Pacific ocean perch, shortspine thornyheads, shortra- ker, rougheye, and northern and dusky rockfish). Eventually the equipment will be used for radiometric investigations on ba- leen whales.\nThe preceding information was provided by DAN KIMURA.\nTrophic Interactions Program\nActivities and research results\nApproximately 141 fish stom- achs were collected and 2,366 were analyzed in the laboratory for the Bering Sea area this quarter. A total of 623 fish stomachs from the Aleutian Islands were analyzed in the laboratory and 996 stomachs were collected from the West Coast slope survey. Only six ob- servers were trained for stomach collection this quarter.\nNew trophic interactions report\nTask members completed a re- port summarizing the food habits and total consumption of Bering\n16\nOctober-November-December 1992\n.\nTable 1 .-- Gulf of Alaska Groundfish 1992 and 1993 acceptable biological catch (ABCs) and total allowable catch (TACs) in metric tons (t) .\nSpecies\nABC (t)\nTAC (t)\n1992\n1993\n1992\n1993\nWalleye* pollock\nW/C\n96,000\n157,000\n84,000\n111,000\nE\n3,400\n3,400\n3,400\n3,400\nTotal\n99,400\n160,400\n87,400\n114,400\nPacific cod\nW\n23,500\n18,700\n23,500\n18,700\nC\n39,000\n35,200\n39,000\n35,200\nE\n1,000\n2,800\n1,000\n2,800\nTotal\n63,500\n56,700\n63,500\n56,700\nFlatfish **\nW\n1,740\n2,020\n1,740\n1,740\n(deep water)\nC\n33,550\n35,580\n15,000\n15,000\nE\n3,990\n7,930\n3,000\n3,000\n39,280\n45,530\n19,740\n19,740\nFlatfish ***\nW\n27,480\n27,480\n3,000\n4,500\n(shallow water)\nC\n21,260\n21,260\n7,000\n10,000\nE\n1,740\n1,740\n1,740\n1,740\nTotal\n50,480\n50,480\n11,740\n16,240\nFlathead sole\nW\n12,580\n12,580\n2,000\n2,000\nC\n31,990\n31,830\n5,000\n5,000\nE\n3,710\n5,040\n3,000\n3,000\nTotal\n48,280\n49,450\n10,000\n10,000\nArrowtooth flounder\nW\n38,880\n38,880\n5,000\n5,000\nC\n253,320\n253,330\n15,000\n20,000\nE\n11,680\n29,080\n5,000\n5,000\nTotal 303,880\n321,290\n25,000\n30,000\nSablefish\nW\n2,500\n2,030\n2,500\n2,030\nC\n9,570\n9,610\n9,570\n9,610\nWYK\n3,740\n3,830\n3,740\n3,830\nSEO\n4,990\n5,430\n4,990\n5,430\nTotal\n20,800\n20,900\n20,800\n20,900\nSlope rockfish\nW\n1,390\n330\n1,390\n214\nC\n6,510\n1,640\n6,510\n1,064\nE\n6,160\n6,330\n6,160\n4,105\nTotal\n14,060\n8,300\n14,060\n5,383\nAFSC Quarterly Report\n17\nTable 1 .-- continued.\nSpecies\nABC (t)\nTAC (t)\n1992\n1993\n1992\n1993\nNorthern\nW\nNA\n1,000\nNA\n1,000\nrockfish\nC\nNA\n4,720\nNA\n4,720\nE\nNA\n40\nNA\n40\nTotal\nNA\n5,760\nNA\n5,760\nPacific ocean W\n1,620\n1,240\n1,470\n571\nperch\nC\n1,720\n1,560\n1,561\n718\nE\n2,390\n2,760\n2,169\n1,271\nTotal\n5,730\n5,560\n5,200\n2,560\nShortraker\nW\n100\n100\n100\n90\nand rougheye C\n1,290\n1,290\n1,290\n1,161\nE\n570\n570\n570\n513\nTotal\n1,960\n1,960\n1,960\n1,764\nPelagic shelf W\n1,212\n1,010\n1,212\n1,010\nrockfish\nC\n4,393\n4,450\n4,393\n4,450\nE\n1,281\n1,280\n1,281\n1,280\nTotal\n6,886\n6,740\n6,886\n6,740\nDemersal\nSEO\n550\n800\n550\n800\nThornyhead rockfish\nGW\n1,798\n1,180\n1,798\n1,062\nOther species\nNA\nNA\n13,432\n14,602\n* Shelikof Strait pollock is included within the W/C ABC range. \"Deep water flatfish\" includes rex sole, Dover sole, and Greenland turbot.\n* \"Shallow water flatfish\" includes rock sole, yellowfin sole, butter sole, starry flounder, and other flatfish not specifically defined.\nW = Western: C = Central; E = Eastern; GW = Gulfwide;\nWYK = Western Yakutat; SEO = Southeast Outside.\n18\nOctober-November-December 1992\n.\n2\nTable 2. -- Bering Sea and Aleutian Islands Groundfish 1992 and 1993 ABCs and TACS.\nSpecies\nABC (mt)\nTAC (mt)\n1992\n1993\n1992\n1993\nPollock\n1,566,600\n1,440,700\n1,352,600\n1,352,600\nPacific cod\n182,000\n164,500\n182,000\n164,500\nYellowfin sole\n372,000\n238,000\n235,000\n220,000\nGreenland turbot\n7,000\n7,000\n7,000\n7,000\nArrowtooth flounder\n82,300\n72,000\n10,000\n10,000\nRock sole\n260,800\n185,000\n40,000\n75,000\nOther flatfish\n199,600\n191,000\n79,000\n79,000\nSablefish\n4,400\n4,100\n4,400\n4,100\nPOP complex\n23,530\n25,520\n23,530\n24,630\nOther rockfish\n1,325\n1,325\n1,325\n1,190\nAtka mackerel\n43,000\n117,100\n43,000\n32,000\nSquid\n3,600\n3,400\n2,000\n2,000\nOther species\n27,200\n26,600\n20,000\n26,600\nSea groundfish populations through 1989. Numbers-at-age of snow crab, Tanner crab, and wall- eye pollock consumed by groundfish predators were esti- mated for 1984 through 1989. These numbers were used to re- construct the respective size of the juvenile populations of these prey and to calculate annual instanta- neous predation mortality coeffi- cients. Fluctuations in numbers of prey consumed at age can occur through several processes: changes in predator or prey abun- dance, changes in prey availability, or predators switching to a more abundant prey source. If preda- tors respond to increases in prey abundance by switching preferen- tially to feeding on the more abun- dant prey, they can cause density-dependent mortality on that prey species. This means that predators can alter the relative size of the prey population. Changes across years in annual predation\nmortality coefficients at age of ju- venile prey populations provide evidence that this process may be occurring.\nFluctuations in estimates of an- nual predation mortality coeffi- cients at age were existent for snow crab, Tanner crab, and wall- eye pollock (Table 3). Large fluc- tuations in coefficients for snow crab ages 1 and 2 were estimated, particularly for age-1 crab from 1984 to 1985 and age-2 crab from 1985 to 1986. A large recruitment of snow crab possibly occurred in 1983 or 1984 and the large natural mortality coefficients estimated from groundfish predation data show larger than average natural mortality at age for the 1983 year class. Larger mortality at age for Tanner crab was noted at age 0 for the 1984 year class, which was also suspected to be above aver- age. Finally, natural mortality coef- ficients for the 1985 year class of walleye pollock are larger at age\nthan for adjacent year classes. The 1985 year class was more abundant than the 1986 to 1989 year classes at age 1, but later proved to be about the same size as the 1986 and 1987 year classes at age 3. It appears that differential predation by groundfish on the 1985 year class from age 0 to 2 may have reduced the relative abundance of this year class upon recruitment to the fishery.\nBering Sea flatfish food habits study completed\nYellowfin sole, rock sole, and Alaska plaice are important fish species in the eastern Bering Sea ecosystem and fishery. These species appear to have very similar feeding habits; however, detailed analysis of their food habits in the eastern Bering Sea has not been studied. A total of 11,651 yellowfin sole, 586 rock sole, and 513 Alaska plaice stomachs were collected from the eastern Bering Sea 1984-\nAFSC Quarterly Report\n19\nTable 3. -- Estimates of the instantaneous annual natural mortality coefficient by age for snow crab, Tanner crab, and walleye pollock obtained from reconstructing juvenile population sizes at age using estimates of population size at age 3 and assuming the only mortality is mortality from predation by groundfish predators.\nYear\nAge\n1984\n1985\n1986\n1987\n1988\n1989\nSnow crab\n0\n-\n-\n-\n-\n1\n1.77\n0.41\n0.59\n0.56\n0.93\n2\n1.53\n1.37\n0.63\n0.48\n0.14\n0.49\nTanner crab\n0\n2.92\n0.55\n0.26\n1.10\n1\n3.00\n3.22\n2.34\n2.92\n2.96\n2\n2.69\n2.66\n0.93\n1.68\n0.94\n1.45\nWalleye pollock\n0\n*\n3.19\n2.67\n2.75\n1\n*\n1.25\n1.88\n1.13\n1.18\n2\n*\n0.17\n0.10\n0.31\n0.16\n0.10\n* Mortality coefficients were not estimated for 1984 because pollock cannibalism estimate was not available for that year.\n88. Stomach contents were iden- tified to the lowest practical taxon. Gape widths and stomach and in- testine lengths were measured and related to food habits.\nAnalysis showed that yellowfin sole had the broadest diet of the three species, consuming benthopelagic prey such as clams, gammarid amphipods, and poly- chaetes. Seasonal variation was seen in the diet of yellowfin sole as they migrated throughout the eastern Bering Sea. Rock sole pri- marily consumed polychaetes, gammarid amphipods and other marine worms (sipunculans, echiurids). Alaska plaice exhibited\nthe narrowest diet, consisting of polychaetes, and other marine worms almost exclusively. Little variation was seen in the diet with respect to predator size, year of collection, depth of collection and time of day for any of the species.\nYellowfin sole was determined to have the largest gape width of the three, rock sole the smallest. Yellowfin sole had the shortest di- gestive tract, Alaska plaice the longest. The gross feeding mor- phology of the these three fish spe- cies was very well suited for the benthic-oriented invertebrate pre- dation.\nIn an area where all three spe- cies were abundant and sampled concurrently, dietary similarity was slight. Additionally, the areas of highest abundance of each of these species were geographically separate. It was concluded that dietary competition was minimal.\nWalleye pollock bioenergetics modeling\nThe University of Wisconsin bioenergetics model of Hewett and Johnson has been parameter- ized for Bering Sea walleye pol- lock. Submodels for consumption, respiration, eges- tion, and excretion were chosen\nOctober-November-December 1992\n20\nand parameterized based on the availability of suitable parameter estimates for walleye pollock and on the appropriateness of the given submodel for a boreal, ma- rine fish. An initial sensitivity anal- ysis of the model was performed. The model was most sensitive to errors in the respiration parame- ters. Only one of the respiration parameters produced a larger than 10% deviation when perturbed by 10%. This was expected since this parameter is an exponent to weight in the maximum respiration equation and would be expected to have a nonlinear effect on model outputs. The model will be used to better define seasonal, size, and interannual changes in daily ration to improve population consump- tion estimates by walleye pollock.\nThe preceding information was provided by PATRICIA LIVINGSTON.\nU.S. Fisheries Observer Program\nGroundfish observer training and deployments\nThrough December 1992, the Observer Program trained 427 in- dividual observers for deployment to domestic fishing vessels and processing plants and ships. An additional 18 observers were trained by the University of Alaska Anchorage through a pilot training program funded by NMFS through the Alaska Sea Grant Program. The 445 observers made 681 ob- server trips. Observers sampled aboard 397 different fishing ves- sels and in 32 different processing\nplants. The majority of observer deployments were made in groundfish fisheries off Alaska where observer coverage aboard vessels in the groundfish fishery is mandatory. Some observer de- ployments (roughly 3%-5% of the total number of deployments) were made on catcher-processor and mothership vessels in the Pa- cific whiting fishery off the north- west coast of the United States. Vessels in the Pacific whiting fish- ery carried observers voluntarily. Seventy percent of all observer de- ployments in 1992 were made by observers who had made previous observer trips for the program on domestic vessels.\nNPFMC approves changes to groundfish observer plan for 1993\nThe NPFMC approved a num- ber of changes to the Observer Plan for groundfish fisheries in the BS-Al and GOA regions for 1993. The approved changes include:\na. A change in the definition of observer coverage from a percent- age of fishing trip days to a per- centage of actual fishing days.\nb. A revision of observer cover- age requirements for vessels 60- 124 ft length overall (LOA) to require that vessels take an ob- server on at least one fishing trip in each target fishery fished as part of the requirement for 30% coverage of each vessel's fishing days in the quarter.\nc. A requirement that vessels 60-124 ft LOA fishing in the GOA\nsablefish longline fishery take an observer on at least one fishing trip in the eastern regulatory area of the GOA as part of their require- ment for 30% coverage of each vessel's fishing days during the quarter.\nd. The reduction from 100% ob- server coverage to 30% observer coverage by quarter for vessels 125 ft LOA and longer which fish with pots or traps.\ne. Changes to the conflict of interest standards for observers and observer contractors.\nThe changes will be im- plemented through a Regulatory Amendment to the BS-Al and GOA Groundfish Fishery Management Plans by mid-1993.\nHigh-seas driftnet observer program\nMembers of the high-seas driftnet portion of the Observer Program continued work on pro- ducing reports summarizing ob- servations of the 1991 Republic of Korea squid and Taiwanese squid and large-mesh driftnet fisheries. Scientists reached agreement re- garding the U.S. and Taiwanese data, and a draft report was pre- pared in early October. The U.S. and Taiwanese report was formally accepted by participating nations in December.\nThe preceding information was provided by JANET WALL.\nAFSC Quarterly Report\n21\nITEMS\nPICES HOLDS ANNUAL MEETING\nThe First Annual Meeting of the North Pacific Marine Science Or- ganization (PICES) opened 12 Oc- tober 1992 in Victoria, British Columbia. Formation of this new organization heralds an unprece- dented opportunity for interna- tional scientific exchange and cooperation in the North Pacific Ocean. The meeting was held in association with the International Symposium on Climate Change and Northern Fish Populations, of which PICES was a sponsor. The symposium was a forum for dis- cussion of the relationship be- tween changing climate and fish population dynamics in northern latitudes.\nIn the PICES Plenary Session, representatives from scientific or- ganizations active in the North Pa- cific Ocean spoke to explain their programs and potential relation- ships to PICES. These included the World Ocean Circulation Ex- periment (WOCE); Joint Global Ocean Flux Studies (JGOFS); Global Ocean Ecosystems Dy- namics (GLOBEC); International North Pacific Ocean Climate Pro- gram (INPOC); Global Ocean Ob- serving Systems (GOOS); Bering Sea Fisheries Oceanography Co- ordinated Investigations (FOCI); and the International North Pacific Fisheries Commission (INPFC). Dr. Warren Wooster addressed the session as Chairman, along with\nrepresentatives of the People's Re- public of China (Xu Li), Japan (H. Hatanaka), and the United States (William Aron). Dr. Aron empha- sized the need to understand the complexity of the North Pacific Ocean and stressed the import- ance of countries cooperating on scientific matters. He also ac- knowledged that the United States strongly supports PICES and its links to other organizations such as GOOS and FOCI.\nOther Center personnel who gave presentations at the sympo- sium included Richard Brodeur - \"Interdecadal Variability in Pelagic Nekton Biomass in the Central Subarctic Domain of the Northeast Pacific Ocean\"; Jack Helle - \"Influ- ence of Climate Change on Size and Age-at-Maturity of Some Pop- ulations of Chum Salmon in North America, 1972-91\"; (Helle also gave a poster session on the same subject); Steve Ignell - \"Variability in Ocean Temperatures and the Ranges of Flying Squid and Sal- monids of the Central North Pacific Ocean, 1978-1990\"; Gary Stauffer and Bernard Megrey - \"An Ex- ploratory Analysis of Associations Between Biotic and Abiotic Fac- tors and Year Class Strength of Gulf of Alaska Walleye Pollock\"; Brad Stevens - the poster session \"Effects of Temperature on Growth and Recruitment of King Crab, Paralithodes camtschtaticus, and Tanner crab, Chionoecetes bairdi\"; Sidney Taylor and Joyce Landingham - Effects of Estua-\nrine Temperatures, Zooplankton Populations, Release Time and Diet, Intra-Annual Survival, and Size and Age at Maturity of 1980 Brood Chum Salmon at Auke Creek, Alaska\"; Taylor - \"Intra-An- nual Survival and Run Timing of Four Broods of Pink Salmon at Auke Creek, Alaska\"; Frank Thrower - \"Short-term Rearing of Chum Salmon Fry: Effect on Sur- vival, Age, Distribution, and Size of Returning Adults\"; and Anne York - \"The Relationship Between the Southern Hemisphere Oscillation Index and Survival of Juvenile Northern Fur Seals From the Prib- ilof Islands.\" William Heard served as moderator of the Discussion Session: Small Scale Perspec- tives. James Ingraham presented video computer simulations of sockeye salmon migrating at vari- ous compass headings and swim- ming speeds during their return to the Fraser River for 1982 and 1983. (The study resulted from coopera- tive research with the University of British Columbia.) Kevin Bailey and Jeffrey Napp also attended the symposium.\nThe United States will host the Second Annual Meeting of PICES at the NOAA facilities in Seattle, Washington, 25-30 October 1993.\nThis item was contributed by JAMES INGRAHAM of the REFM Division.\nOctober-November-December 1992\n22\nGENERAL ACTIVITIES\nAWARDS\nJOHN KARINEN was honored by the American Institute of Fisheries Research Biologists for his profes- sional participation as a District Di- rector and as a member of the Board of Control from 1989 to 1990.\nGEOFFREY LANG successfully defended his master's thesis, \"Food Habits of Three Congeneric Flatfishes: Yellowfin Sole Pleuronectes asper, Rock Sole P. bilineatus, and Alaska Plaice P. quadrituberculatus in the Eastern Bering Sea, 1984-1988\", at the School of Fisheries, University of Washington.\nB. ALAN JOHNSON was elected for a 3-year term as District Vice Chair for the Council of Chapters of the American Statistical Associ- ation. This district includes Alaska, Washington, Oregon, Cal- ifornia, Idaho, Montana, Utah, Wy- oming, Arizona, and New Mexico.\nPUBLIC SERVICE AND COOPERATIVE ACTIVITIES\nCHRISTINE KONDZELA met with scientists from the Alaska Depart- ment of Fish and Game's (ADF&G) Genetics Laboratory in Anchorage to compare procedures used in chum salmon electrophoresis analyses.\nLINCOLN FREESE served as vol- unteer operator of the NOAA- sponsored hyperbaric chamber located at Bartlett Memorial Hospi- tal in Juneau, Alaska.\nBRUCE WING assisted the Juneau-Douglas City Museum in identifying a variety of local marine invertebrates.\nGEORGE SNYDER and STEVEN IGNELL hosted a high school stu- dent from Petersburg, Alaska, as part of a special project to bring students together with various pro- fessionals in science.\nK KOSKI was selected by the Juneau City and Borough to serve as a member of the Technical Ad- visory Committee on Wetlands. KOSKI also assisted the Juneau Chapter of Trout Unlimited prepare a proposal for restoring Duck Creek, a highly degraded stream in the Mendenhall Valley in Juneau.\nKOSKI traveled to Beaufort, North Carolina, to meet with representa- tives from the Beaufort Laboratory and the Restoration Center in Washington, D.C., to finalize a draft document describing the Restora- tion Center's \"Habitat Restoration Research Program.\"\nJAMES MURPHY met with repre- sentatives from the University of Alaska Fairbanks, Juneau Center for Fisheries and Ocean Sciences, to discuss analyses of salmonid bycatch patterns near the Em- peror Seamount region.\nALLEN WOLMAN provided the Hale Kohala-House of the Whale, a new whale museum in Lahaina, Hawaii, with a selected series of cetological specimens for exhibi- tion. DALE RICE provided scien- tific advice for a series of signs to accompany the exhibits.\nBILL HIGH attended a meeting of the Washington State Department of Wildlife and the NMFS North- west Regional Office to establish a diving plan for cooperative re- search at the Hiram M. Chittenden Locks in Seattle, Washington. The AFSC agreed to provide diving- related support for an experimen-\ntal sea lion deterrent system using underwater sound transducers. HIGH supervised a dive team com- posed of AFSC diving scientists and NOAA Corps officers during the successful installation of three sound generators downstream of the lock spillway.\nDEBORAH SIEFERT and MOR- GAN BUSBY visited the Plankton Sorting Center of the Sea Fisheries Institute (Morski Instytut Rybacki) in Szczcein, Poland, to prepare Polish colleagues for new plankton and ichthyology sample identifica- tion protocols.\nThe Japanese research vessel Kaiyo Maru was granted coopera- tive status by the AFSC to conduct coordinated walleye pollock re- search in the Bering Sea and Aleu- tian Basin with the Center's RACE Division.\nLEWIS QUEIROLO met with a rep- resentative from the Long John Sil- vers company to discuss international trade in fisheries products and to review research into world whitefish supplies.\nLOH-LEE LOW participated as a fisheries consultant to the World Bank in China to review the techni- cal merits of a fisheries develop- ment project in southern China.\nVIDAR WESPESTAD served on a panel of speakers for the Women's Fisheries Network Meeting in Seat- tle. The topic was \"Where Are the Fish? - A Resource Issue.\"\nMEETINGS AND PRESENTATIONS\nWILLIAM HEARD attended the NMFS Aquaculture Task Force Meeting held in Silver Spring, Maryland.\nAFSC Quarterly Report\n23\nJERRY REEVES gave a presenta- tion to the Alaska Crab Coalition at the Leif Erikson Hall, Ballard, on future crab abundance and on po- tential crab discard mortality prob- lems in the pot fisheries.\nQUEIROLO met with the North Pa- cific Longliner's Association at the AFSC to review fishery manage- ment developments in the North Pacific Ocean and Bering Sea.\nLOW and ANNE HOLLOWED con- ducted a status of stocks preview of groundfish resources off Alaska for the Seattle fishing industry. WILLIAM ARON and RICHARD MARASCO attended.\nRUSSELL NELSON, JANET WALL, and JERRY BERGER met with staff from the NMFS Alaska Region and members of the Amer- ican Factory Trawlers Association at the AFSC to discuss guidelines for the volumetric measurement of the size of groundfish catches taken by at-sea processors.\nKOSKI and JOHN THHEDINGA presented a seminar to the U.S. Forest Service, ADF&G, and other interested agencies on 4 years of research on the Situk River/Hub- bard Glacier project.\nALEX WERTHEIMER, as Chapter President, chaired a meeting of the American Fisheries Society (AFS) in Valdez, Alaska, and participated on a panel discussing biodiversity and fisheries management. ADRIAN CELEWYCZ also at- tended the meeting and presented the paper \"The Impact of the Exxon Valdez Oil Spill on Juvenile Salmon and their Prey in Nearshore Marine Habitats.\"\nJAMES OLSEN and KENNETH HENRY attended the U.S. Section\nMeeting of the Pacific Salmon Commission (PSC) held in Seattle.\nOLSEN and JOHN EILER attended the PSC's Bilateral Transboundary Technical Committee Meeting held in Vancouver, British Colum- bia.\nHENRY and IGNELL also attended a bilateral meeting of the Chinook Salmon Technical Committee in Portland, Oregon.\nJOHN HELLE and JEROME PELLA attended the Bilateral Northern Boundary Area Techni- cal Committee Meeting of the PSC held in Seattle.\nOLSEN attended the PSC's Bilat- eral Research and Statistics Com- mittee Meeting held in Bellevue, Washington.\nOLSEN and HELLE attended the PSC Meeting held in Vancouver, B.C. OLSEN also attended a meeting of the PSC Research and Statistics Committee.\nTERRY SAMPLE met with the NPFMC Bering Sea Plan Team in Seattle to discuss the status of flat- fish stocks.\nB. ALAN JOHNSON presented \"The Use of Q-Q Plots in Fisheries Management\" at the Joint Statisti- cal Meetings of the American Sta- tistical Society in Boston, Massachusetts.\nHENRY attended meetings of the U.S .- Canada Bilateral Chum Salmon Technical Committee in Vancouver, B.C.\nLOW, MARASCO, and MICHAEL DAHLBERG attended the Interna- tional North Pacific Fisheries Commission's (INPFC) Standing Committee on Biology and Re-\nsearch Meeting held at the Alaska Fisheries Science Center (AFSC). RODERICK HOBBS and LINDA JONES represented the National Marine Mammal Laboratory (NMML) as U.S. advisors. LOW convened the technical sessions.\nNEAL WILLIAMSON participated in the INPFC Working Group meet- ing in Tokyo, Japan.\nCHRIS WILSON presented \"Inter- actions of Diel Migrators and Ocean Currents at a Small Sea Mount\" and DAVID SOMERTON presented \"The Fallacy of Swept- Area Methods: The Herding Ef- fect\" as part of the RACE Seminar series held throughout the year at the Center.\nMARASCO chaired and RICHARD METHOT participated in a meeting of the Pacific Fisheries Information Network (PacFIN) Data Commit- tee of the Pacific States Marine Fisheries Commission in San Diego, California. The committee reviewed PacFIN operations and plans for implementation of the re- defined PacFIN system and dis- cussed funding priorities for 1993.\nJEFFREY FUJIOKA and JON HEIFETZ attended the North Pa- cific Fishery Management Council (NPFMC) meeting held in Anchor- age.\nJOSEPH TERRY participated in a meeting of the NPFMC Bycatch Cap Committee. TERRY also at- tended the NPFMC Comprehens- ive Rationalization Committee Meeting in Seattle.\nJAMES HASTIE attended the NPFMC Rockfish Working Group Meeting held at the AFSC.\nHASTIE and TERRY participated in a meeting of the NPFMC and\nOctober-November-December 1992\n24\nAlaska Region staff to discuss fu- ture management of NPFMC fish- eries.\nLOW chaired the NPFMC Bering Sea-Aleutian Islands Groundfish Plan Team meetings held at the AFSC. LOWE chaired the NPFMC Gulf of Alaska Groundfish Plan Team Meetings. TERRY,\nWESPESTAD, RICHARD MERRICK, RICHARD FERRERO, GRANT THOMPSON, JIM IANELLI, and TOM WILDERBUER attended the NPFMC Groundfish Plan Team Meetings.\nMARASCO, METHOT, and SAN- DRA LOWE attended the NPFMC's Scientific and Statistical Commit- tee (SSC) Meeting in Anchorage for the final review of the groundf- ish stock assessments. LOWE and METHOT provided technical support for the stock assessment reviews.\n1\nSTAUFFER attended the SSC and general PFMC meetings in Seattle. He also participated in a University of Alaska, School of Fisheries and Ocean Sciences, Advisory Council meeting in Fairbanks, Alaska.\nLOW, LOWE, MARASCO, TERRY, and NELSON attended the De- cember meeting of the NPFMC in Anchorage.\nNELSON attended a public meet- ing in Anchorage held by the NPFMC on the bycatch of salmon and steelhead trout in trawl fisher- ies in Alaska. He also attended a meeting of the NPFMC Bycatch Cap Committee in Anchorage.\nHENRY attended the PFMC meet- ing in Seattle where he presented \"The Status of 1992 Ocean Salmon Fisheries.\" As chairman of the Salmon Technical Team (STT), he also presented STT position re-\nports on a number of issues and worked on the STT Statistical Re- port.\nHASTIE attended the PFMC's Groundfish Management Team and Individual Transfer Quota (ITQ) Committee Meetings in Port- land.\nHASTIE attended the PFMC meet- ing in Seattle where he presented material to the Scientific and Sta- tistical Committee, the Advisory Panel, and the Groundfish Plan Team regarding initial analysis of options for initial allocation of sa- blefish ITQs.\nMETHOT chaired a meeting of the Groundfish Management Team of the PFMC in Portland, Oregon. METHOT also represented the Groundfish Management Team at the November meeting of the PFMC in Seattle.\nKARINEN presented the paper, \"Hydrocarbons in Intertidal Sedi- ments and Mussels from Prince William Sound, Alaska, 1977-1980: Characterization and Probable Sources\", at the Arctic Science Conference held in Valdez, Alaska.\nMICHAEL MURPHY presented \"Partitioning of Smolt Yield in the Situk River, Alaska, to Predict Ef- fects of Glacial Flooding\" at the 1992 Coho and Chinook Work- shop in Boise, Idaho, sponsored by the American Fisheries Society.\nAt the University of Alaska Fair- banks, Juneau Center for Fisheries and Ocean Sciences, MICHAEL SIGLER presented the paper, \"On the Odds of Catching Fish With Longline Gear\"; STANLEY CARL- SON presented \"An Analysis of the Nekton Community Around the Subarctic Frontal Zone\"; and CHARLES FOWLER presented\n\"Do We Have the Scientific Basis for Management at the Ecosystem Level?\"\nSHARON HAWKINS and JOSEPH GREENOUGH met with Dr. Valeriy Yefanov from the Pacific Research Institute of Marine Fisheries and Oceanography (TINRO) in Sakhalin, Russia, to discuss oil lease procedures in the United States in order to identify possible courses of action regarding plans for possible large-scale oil and gas development off the northeast coast of Sakhalin Island, Russia, in a particularly rich fishing area. The people in the area have serious concerns regarding the possible effects of pollution on fish re- sources. Auke Bay Laboratory's procedure for analyzing samples for hydrocarbons was also ex- plained to Dr. Yefanovso so that a comparable analytical laboratory and monitoring program might be set up in Sakhalin.\nGREENOUGH met and conducted a tour of the ABL for Assistant Sec- retary and Deputy Administrator of NOAA Gennifer Joy Wilson, Donna Pagano of the NOAA Congres- sional staff, and Alaska Regional Director Steven Pennoyer.\nHEARD participated as a U.S. Panel Member in the 21st Annual Meeting and Technical Sympo- sium of the United States-Japan Natural Resources Group held in Kyoto and Choshi, Japan.\nTAYLOR presented the paper, \"First Return of Hatchery-reared Sockeye Salmon Produced from Age-0 Smolts at Auke Creek, Alaska\", at the Northwest Fish Cul- ture Conference held in Wenatchee, Washington.\nSIGLER presented \"On the Odds of Catching Fish With Longline\nAFSC Quarterly Report\n25\nGear\" at the workshop on Quanti- tative Gear Analysis and Modeling sponsored by the Institute for Ma- rine Research (Norway), Univer- sity of Washington (Seattle), and the University of Bergen's Institute of Fisheries and Marine Biology Department (Norway).\nJOHN BENGTSON attended the Ilth Annual Meeting of the Conven- tion for the Conservation of Antarc- tic Marine Living Resources (CCAMLR) Commission and Sci- entific Committee in Hobart, Tas- mania. BENGTSON also participated in a CCAMLR delegating meeting in Washington, D.C., to discuss the U.S .- Antarctic crab fishery.\nFERRERO presented a summary of 1992 NMML harbor seal and killer whale research findings to the Kodiak Chamber of Commerce, Kodiak, Alaska, and attended the NPFMC meeting in Anchorage. OTTO also attended the NPFMC meeting.\nROBERT OTTO attended meetings of the Working Group on Fish Stock Assessment and the Scientific Committee of the CCAMLR in Ho- bart, Australia, where he presented \"A Preliminary Report on Research Conducted During Experimental Crab Fishing in the Antarctic Dur- ing 1992 (CCAMLR Area 48).\"\nMARASCO attended and chaired Session V: Considerations of So- cioeconomics and Allocation at the Lowell Wakefield Symposium on Management Strategies for Ex- ploited Fish Populations; BER- NARD MEGREY presented \"Evaluation of Risks Associated with Application of Alternative Har- vest Strategies for Gulf of Alaska Walleye Pollock\"; LOWE pre- sented \"Exploitation Strategies for the Atka Mackerel Resource of the Aleutian Islands\"; LOWE also\nserved as rapporteur for Session I: The Role of Information in the Man- agement Process; THOMPSON presented \"Managing Bycatch in Inter-jurisdictional Fisheries\"; PELLA presented \"Utility of Struc- tural Time Series Models and the Kalman Filter for Predicting Conse- quences of Fishery Actions\"; SIGLER presented \"Harvest Policies for Sa- blefish in the Gulf of Alaska\"; and MEGREY presented \"Evaluation of Risks Associated with Application of Alternative Harvest Strategies for Gulf of Alaska Pollock\"; MEGREY also presented a Fisheries-Ocean- ography Coordinated Investiga- tions (FOCI) seminar entitled \"Relationships Between the Envi- ronment and Year Class Strength of Gulf of Alaska Pollock and a Pro- posal for Recruitment Prediction.\"\nNAPP presented \"Multi-disciplin- ary Research in Alaska: NOAA's Fisheries-Oceanography Coordi- nated Investigations\" at the 39th Eastern Pacific Ocean Conference at Mt. Hood, Oregon; NAPP also presented a FOCI seminar entitled \"The Coupling of Physics and Biology in Primary and Secondary Produc- tion: From Sunlight to Fish Food.\"\nBRODEUR presented \"The Import- ance of Various Spatial and Tem- poral Scales in the Interaction of Juvenile Salmon and the Marine Environment\" at the Workshop on Growth, Distribution, and Mortality of Juvenile Pacific Salmon in Sid- ney, British Columbia, Canada; BRODEUR also presented the poster \"Vertical and Horizontal Dis- tribution of Ichthyoplankton in the Northern Gulf of Alaska\" with WIL- LIAM RUGEN and MIRIAM DOYLE and coauthored a poster entitled \"The Potential Use of an Acoustic Echo System to Detect Mesoscale Features in the Ocean\" at the an- nual CalCOFI meeting in Monte- rey, California.\nWESPESTAD lectured to the Uni- versity of Washington's \"World Fisheries\" class on the assessment and management of gadid and herring stocks; SHERYL COREY gave a lecture on the types of fish- ing vessels involved in Alaskan fisheries and the role of the ob- server program in collecting data for management of these fisheries.\nLOW attended a Seattle meeting of the International Pacific Halibut Com- mission to review the 1992 fishing season and to plan for 1993.\nMETHOT and THOMAS LOUGHLIN presented \"Marine Mammals and Fisheries -- A Histor- ical Perspective and a Focus for Research\" at the School of Fisher- ies, University of Washington.\nNELSON attended an informa- tional meeting in Seattle to review Terra Marine Research & Education's (Northwest Chapter) request for an Experimental Fish- ing Permit from the NMFS to con- duct an experiment on the feasibility of requiring retention of prohibited species bycatch in Alaskan trawl fisheries in 1993.\nJAMES INGRAHAM presented a seminar at the AFSC titled \"The Great Sneaker Spill in the North Pacific.\" The Ocean Surface Cur- rent Simulation (OSCURS) numer- ical model was used to track 80,000 Nike sneakers spilled dur- ing a storm at lat. 48°N, long. 161°W on 27 May 1990.\nLANG, PATRICIA LIVINGSTON, and MEI-SUN YANG presented the poster \"The Trophic Interactions Program at the AFSC: Objectives, Activities, and Products\" at \"Gutshop '92\" on Orcas Island, Washington.\n26\nOctober-November-December 1992\n1\nPUBLICATIONS AND REPORTS BY CENTER AUTHORS\nPUBLICATIONS\nBAKER, J.D., and C.W.FOWLER.\n1992. Pup weight and survival of northern fur seals Callorhinus ursinus. J. Zool. (Lond.) 227:231-238.\nBENGTSON, J.L., and B.S. STEWART.\n1992. Diving and haulout behavior of crabeater seals in the Weddell Sea, Antarctica, during March 1986. Polar Biol. 12(6-7):635-644.\nBRAHAM, H.W.\n1992. Scientific investigations of the National Ma- rine Mammal Laboratory, 1990. Polar Rec. 28(164):43-46.\nBRODEUR, R., and R.C. FRANCIS\n1992. Food consumption of juvenile coho (Oncorhynchus kisutch) and chinook salmon (O. tshawytscha) on the continental shelf off Washington and Oregon. Can. J. Fish. Aquat. Sci. 49:1670-1685.\nCROLL, D.A., M.K. NISHIGUCHI, and S. KAUPP.\n1992. Pressure and lactate dehydrogenase func- tion in diving mammals and birds. Physiol. Zool. 65:1022-1027.\nCROLL, D.A., A.J. GASTON, A.E. BURGER, and D. KONNOFF.\n1992. Foraging behavior and physiological adap- tation for diving in thick-billed murres. Ecology. 73:344-356.\nDELONG, R.L., E.F. EDWARDS, P. WADE, and J.E. SISSON.\n1992. Documenting migrations of northern ele- phant seals using day length. Mar. Mammal Sci. 8:155-159.\nEBERHARDT, L.E., and J.M. BREIWICK.\n1992. Impact of recent population data on histori- cal population levels of bowhead whales inferred from simulation studies. Rep. Int. Whaling Comm. 42:485-489.\nHOLLOWED, A.B.\n1992. Spatial and temporal distributions of Pacific hake, Merluccius productus, larvae and estimates of survival during early life stages. CalCOFI Rep. 33, p. 100-123.\nKIMURA, D.K.\n1992. Symmetry and scale dependence in func- tional relationship regression. Syst. Biol. 41(2):233- 241.\nKIMURA, D.K.\n1992. Functional comparative calibration using an EM algorithm. Biometrics 48(4):1263-1271.\nKIYOTA, M., I.R. LOUGHLIN, N. BABA, M. NAKAJIMA, and K. KOHYAMA.\n1992. Use of a tileamine hydrochloride-zolazepam hydrochloride mixture as an immobilizing agent for northern fur seals (Callorhinus ursinus). Mar. Sci. (Japan). 32:1-7.\nKOSKI, K V.\n1992. Restoring stream habitats affected by log- ging activities. In G. W. Thayer (ed.), Restoring the Nation's marine environment, p. 343-403. Maryland Sea Grant College Publ. UM-SG-TS-92-06. Maryland Sea Grant College, Skinner Bldg., Univ. of Maryland, College Park, MD 10742.\nMAJLUF, P., and M.E. GOEBEL.\n1992. The capture and handling of female South American fur seals and their pups. Mar. Mammal Sci. 8:187-190.\nMcCONNAUGHEY, R.A., D.A. ARMSTRONG, B.M. HICKEY, and D.R. GUNDERSON.\n1992. Juvenile Dungeness crab (Cancer magister) recruitment variability and oceanic transport during the pelagic larval phase. Can. J. Fish. Aquat. Sci. 49:2028-2044.\nOLLA, B.L., M.W. DAVIS, and C.B. SCHRECK.\n1992. Comparison of predator avoidance capabil- ities with corticosteriod levels induced by stress in juvenile coho salmon. Trans. Am. Fish. Soc. 121:544-547.\nPONGANIS, P.J., R.L. GENTRY, E.P. PONGANIS, and K.V. PONGANIS.\n1992. Analysis of swim velocities during deep and shallow dives of two northern fur seals, Callorhinus ursinus. Mar. Mammal Sci. 8:69-75.\nTHOMPSON, G.G.\n1992. Management advice from a simple dynamic pool model. Fish. Bull., U.S. 90:552-560.\nAFSC Quarterly Report\n27\nTHOMPSON, G.G.\n1992. A Bayesian approach to management ad- vice when stock-recruitment parameters are uncer- tain. Fish. Bull., U.S. 90:561-573.\nWITHROW, D., and R. ANGLISS.\n1992. Length frequency of bowhead whales from spring aerial photogrammetric surveys in 1985, 1986, 1989 and 1990. Rep. Int. Whaling Comm. 42:463- 467.\nWITHROW, D., R. BURKE Jr., L. JONES, and J. BROOKS.\n1992. Variations in 13C carbon isotope ratios in bowhead whale baleen plates used to estimate age. Rep. Int. Whaling Comm. 42:469-473.\nTECHNICAL MEMORANDUMS1\nGUTTORMSEN, M., R. NARITA, and J. BERGER.\n1992. Summary of U. S. observer sampling of joint venture fisheries in the Northeast Pacific Ocean and eastern Bering Sea, 1990. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-4, 78 p.\nGUTTORMSEN, M., R. NARITA, J. GHARRETT, G. TROMBLE, and J. BERGER.\n1992. Summary of observer sampling of domestic groundfish fisheries in the Northeast Pacific Ocean and eastern Bering Sea, 1990. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-5, 281 p.\nPROCESSED REPORTS2\nARMISTEAD, C.E.\n1992. Report to the fishing industry on results of the 1992 eastern Bering Sea groundfish survey. Alaska Fish. Sci. Cent., Natl. Mar. Fish. Serv., NOAA, 7600 Sand Point Way NE, Seattle, WA 98115. AFSC Pro- cessed Rep. 92-13, 56 p.\nDOYLE, M.J.\n1992. Patterns in distribution and abundance of ichthyoplankton off Washington, Oregon, and north- ern California (1980 to 1987). Alaska Fish. Sci. Cent., Natl. Mar. Fish. Serv., NOAA, 7600 Sand Point Way NE, Seattle, WA 98115. AFSC Processed Rep. 92-14, 344 p.\nSTEVENS, B.G., J.H. BOWERMAN, R.A. MACIN- TOSH, and J.A. HAAGA.\n1992. Report to industry on the 1992 eastern Bering Sea crab survey. Alaska Fish. Sci. Cent., Natl. Mar. Fish. Serv., NOAA, 7600 Sand Point Way NE, Seattle, WA 98115. AFSC Processed Rep. 92-12, 57 p.\n1The NOAA TECHNICAL MEMORANDUM series NMFS AFSC (formerly F/NWC) is a Center publication which has a high level of peer review and editing. Technical Memorandum reflect sound professional work and may be cited as publications. Copies may be ordered from the National Technical Information Service, U.S. Department of Commerce, 5285 Port Royal Road, Springfield, VA 22161.\n2The AFSC PROCESSED REPORT series is not formally reviewed and individual reports do not constitute publications. The re- ports are for information only and a limited number of copies are available from the author.\nOctober-November-December 1992\n28\n\nU.S. DEPARTMENT OF COMMERCE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NATIONAL MARINE FISHERIES SERVICE Alaska Fisheries Science Center 7600 Sand Point Way N.E. Bin C15700 Seattle, Washington 98115-0070\nOFFICIAL BUSINESS\nSEATTLE\nU.S. OFFICIAL MAIL U.S. POSTAGE\nMAR 15 53\nPENALTY FOR PRIVATE USE $300\n$0,98 FMETER 520293\nWASH.\nDIRECTOR TIBURON FISHERIES LABORATORY NMFS - NOAA 3150 PARADISE DRIVE TIBURON CA 94920",
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                    "content": "Center, 7600 Sand Point Way N.E., Bin C15700, F/AKC, Seattle, WA 98115-0070, Phone (206) 526-4283.",
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                {
                    "content": "factory",
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                    "content": "ship",
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                {
                    "content": "Capella",
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                },
                {
                    "content": "I,",
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                    "confidence": 0.693,
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                {
                    "content": "AFSC",
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                    "confidence": 0.989,
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                {
                    "content": "Quarterly",
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                {
                    "content": "Report",
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                    "content": "1",
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                    "confidence": 0.994,
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            ],
            "lines": [
                {
                    "content": "FEATURE",
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                {
                    "content": "Photo by K.C. Balcomb",
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                    "content": "Among the great whales, the ror-",
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                },
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                    "content": "quals, which include the blue, fin,",
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                },
                {
                    "content": "sei, minke, and humpback whales,",
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                },
                {
                    "content": "are noted for their long annual mi-",
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                },
                {
                    "content": "grations. In general, most rorqual",
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                {
                    "content": "populations spend the summer in",
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                {
                    "content": "the cool, highly productive waters",
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                {
                    "content": "at high latitudes or in cool eastern",
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                    "content": "boundary currents, where they",
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                {
                    "content": "feed heavily. From there they mi-",
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                    "content": "grate south to their winter grounds",
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                {
                    "content": "in warm, temperate or tropical wa-",
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                },
                {
                    "content": "ters, where they fast for several",
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                {
                    "content": "months. When biologist Allen Wol-",
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                    "content": "man of the National Marine Mam-",
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                {
                    "content": "mal Laboratory and I began to",
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                    "content": "study the populations of the great",
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                    "content": "whales in the eastern North Pacific",
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                    "content": "Ocean in the late 1950s and the",
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                    "content": "1960s, we found that the fin, sei,",
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                },
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                    "content": "and humpback whales followed",
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                    "content": "this annual cycle but that blue",
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                },
                {
                    "content": "whales did not. As a result, one of",
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                },
                {
                    "content": "our main research objectives has",
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                },
                {
                    "content": "been to determine the migratory",
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                },
                {
                    "content": "The Blue Whales",
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                    "content": "of the",
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                    "content": "Southeastern",
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                    ]
                },
                {
                    "content": "North Pacific Ocean",
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                {
                    "content": "patterns of the blue whales of the",
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                },
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                    "content": "Southeastern North Pacific",
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                },
                {
                    "content": "Ocean.",
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                    ]
                },
                {
                    "content": "The whalers of the 19th century",
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                    "content": "were aware of the presence of blue",
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                    "content": "whales off the coasts of California",
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                {
                    "content": "and Baja California, Mexico, but",
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                {
                    "content": "they almost never attempted to at-",
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                    "content": "tack such huge, powerful animals",
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                    "content": "with their hand harpoons. One ex-",
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                {
                    "content": "ception was Charles Scammon, an",
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                    "content": "American whaling captain known",
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                {
                    "content": "for discovering the calving la-",
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                {
                    "content": "goons of the gray whales along the",
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                    "content": "coast of Baja California. In his",
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                },
                {
                    "content": "classic volume The Marine Mam-",
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                },
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                    "content": "mals of the Northwestern Coast of",
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                    "content": "North America (1874), Scammon",
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                    "content": "described how he encountered",
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                    "content": "large numbers of blue whales off",
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                },
                {
                    "content": "Isla Cedros, Mexico, in July 1858,",
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                    "content": "industry reached Baja California in",
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                },
                {
                    "content": "captains",
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                    "content": "for",
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                    "content": "us",
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                    "content": "of",
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                {
                    "content": "their",
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                {
                    "content": "sightings",
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                {
                    "content": "of",
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                },
                {
                    "content": "spe-",
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                },
                {
                    "content": "October-November-December",
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                    }
                },
                {
                    "content": "1992",
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                    "confidence": 0.99,
                    "span": {
                        "offset": 8251,
                        "length": 4
                    }
                },
                {
                    "content": "2",
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                    "confidence": 0.992,
                    "span": {
                        "offset": 8256,
                        "length": 1
                    }
                }
            ],
            "lines": [
                {
                    "content": "operating out of Bahia Magdalena,",
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                    "spans": [
                        {
                            "offset": 5318,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "Mexico, took 83 blue whales. Cap-",
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                        }
                    ]
                },
                {
                    "content": "tain Andreas Ingebrigtsen pub-",
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                            "length": 30
                        }
                    ]
                },
                {
                    "content": "lished an account of how he found",
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                            "offset": 5417,
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                        }
                    ]
                },
                {
                    "content": "the blues migrating south at the",
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                            "offset": 5451,
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                        }
                    ]
                },
                {
                    "content": "end of October, and passing again",
                    "polygon": [
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                        }
                    ]
                },
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                    "content": "going north from April to June.",
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                    ]
                },
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                    "content": "The first modern shore whaling",
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                        }
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                },
                {
                    "content": "stations in California were opened",
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                        }
                    ]
                },
                {
                    "content": "at Moss Landing in 1918, and at",
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                        }
                    ]
                },
                {
                    "content": "Trinidad in 1920. Both operated",
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                            "offset": 5648,
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                        }
                    ]
                },
                {
                    "content": "until 1926. Only three blue whales",
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                        }
                    ]
                },
                {
                    "content": "were taken by these stations.",
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                        }
                    ]
                },
                {
                    "content": "Norwegian whalers returned to",
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                            "offset": 5745,
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                        }
                    ]
                },
                {
                    "content": "Baja California in a big way during",
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                            "offset": 5775,
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                        }
                    ]
                },
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                    "content": "the winter seasons of 1924-25 to",
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                            "offset": 5811,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "1928-29 with the floating factory",
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                        {
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                    ]
                },
                {
                    "content": "ships Kommandoren I, Mexico,",
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                    ]
                },
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                    "content": "and Esperanza; one American ves-",
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                    ]
                },
                {
                    "content": "sel, the Lansing, operated there in",
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                    ]
                },
                {
                    "content": "1928-29. These ships operated",
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                        }
                    ]
                },
                {
                    "content": "from protected anchorages, like",
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                    ]
                },
                {
                    "content": "mobile shore stations rather than",
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                        }
                    ]
                },
                {
                    "content": "the huge pelagic factory ships of",
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                        }
                    ]
                },
                {
                    "content": "later years. Again, they operated",
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                        }
                    ]
                },
                {
                    "content": "mostly out of Bahia Magdalena but",
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                        }
                    ]
                },
                {
                    "content": "also worked as far south as the",
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                    "spans": [
                        {
                            "offset": 6174,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "Islas Tres Marias and north into the",
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                    ]
                },
                {
                    "content": "Gulf of California. They killed 942",
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                        }
                    ]
                },
                {
                    "content": "blue whales during the five sea-",
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                            "offset": 6279,
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                        }
                    ]
                },
                {
                    "content": "sons. The Esperanza returned",
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                        }
                    ]
                },
                {
                    "content": "early in 1935 and killed 47 more",
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                        }
                    ]
                },
                {
                    "content": "blue whales from Bahia Magda-",
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                        }
                    ]
                },
                {
                    "content": "lena north to San Clemente Island.",
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                        }
                    ]
                },
                {
                    "content": "The companies' daily records",
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                    ]
                },
                {
                    "content": "show that these whalers found few",
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                        }
                    ]
                },
                {
                    "content": "blue whales in October and almost",
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                        }
                    ]
                },
                {
                    "content": "none from November to January;",
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                        {
                            "offset": 6536,
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                        }
                    ]
                },
                {
                    "content": "the vast majority were killed from",
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                        {
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                        }
                    ]
                },
                {
                    "content": "February to early July, with a peak",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "in May.",
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                            "offset": 6638,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "From 1927 to 1930, the Lansing",
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                    ]
                },
                {
                    "content": "operated mainly off southern Cali-",
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                        {
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                    ]
                },
                {
                    "content": "fornia and killed 295 blue whales in",
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                    ],
                    "spans": [
                        {
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                        }
                    ]
                },
                {
                    "content": "3 years (no data are available for",
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                        }
                    ]
                },
                {
                    "content": "1930). From 1932 to 1937, another",
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                    ]
                },
                {
                    "content": "American factory ship California",
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                    "spans": [
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                {
                    "content": "was whaling between San Diego",
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                },
                {
                    "content": "and Point Reyes, California. Al-",
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                },
                {
                    "content": "though this ship doubtless took",
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                },
                {
                    "content": "some blue whales, no breakdown",
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                {
                    "content": "by species is available except for",
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                    ]
                },
                {
                    "content": "1937, when eight blues were killed.",
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                {
                    "content": "Trinidad",
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                    "content": "Eureka",
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                    "content": "San Rafael",
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                    "content": "Richmond",
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                    "content": "Farallon Is .**",
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                    "content": "CALIFORNIA",
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                {
                    "content": "San Clemente I.",
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                {
                    "content": "Pacific",
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                {
                    "content": "Ocean",
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                },
                {
                    "content": "MEXICO",
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                    ]
                },
                {
                    "content": "Isla Cedros /",
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                },
                {
                    "content": "BAJA CALIFORNIA",
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                {
                    "content": "Bahla Magdalena",
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                    ]
                },
                {
                    "content": "Gulf of California",
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                    ]
                },
                {
                    "content": "Cabo San Lucas",
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                    ]
                },
                {
                    "content": "Islas Tres Marias \".",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 7228,
                            "length": 20
                        }
                    ]
                },
                {
                    "content": "Map shows the area where southeastern North Pacific blue whales range.",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "No blue whales were taken by",
                    "polygon": [
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                    ]
                },
                {
                    "content": "a shore whaling station that oper-",
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                    ]
                },
                {
                    "content": "ated at McNears Point near San",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Rafael, California, in 1939 nor by",
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                        }
                    ]
                },
                {
                    "content": "another that operated at Fields",
                    "polygon": [
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                            "offset": 7450,
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                    ]
                },
                {
                    "content": "Landing, near Eureka, from 1940",
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                        {
                            "offset": 7482,
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                        }
                    ]
                },
                {
                    "content": "to 1944, 1947 to 1949, and in 1951.",
                    "polygon": [
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                    "spans": [
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                            "offset": 7514,
                            "length": 35
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                    ]
                },
                {
                    "content": "The Del Monte Fishing Com-",
                    "polygon": [
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                    "spans": [
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                            "offset": 7550,
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                    ]
                },
                {
                    "content": "pany opened a whaling station at",
                    "polygon": [
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                    "spans": [
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                },
                {
                    "content": "Point San Pablo, Richmond, Cali-",
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                },
                {
                    "content": "fornia, in 1956, and the Golden",
                    "polygon": [
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                    "spans": [
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                            "offset": 7643,
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                },
                {
                    "content": "Gate Fishing Company opened",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "another one virtually next door in",
                    "polygon": [
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                },
                {
                    "content": "1958. From 1959 to 1970, Wolman",
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                },
                {
                    "content": "and I conducted biological re-",
                    "polygon": [
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                    "spans": [
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                },
                {
                    "content": "search on whales landed at these",
                    "polygon": [
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                },
                {
                    "content": "stations. Twenty-six blue whales",
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                {
                    "content": "were landed in 1958, and an addi-",
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                },
                {
                    "content": "tional 22 from 1959 to 1965, after",
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                            "offset": 7901,
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                },
                {
                    "content": "which the capture of blue whales",
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                {
                    "content": "was proscribed by the Interna-",
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                {
                    "content": "tional Whaling Commission. A few",
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                {
                    "content": "of these blues were taken as early",
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                },
                {
                    "content": "as May, but most were killed in",
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                    ]
                },
                {
                    "content": "September and October. From",
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                    "content": "1966 to 1970, the catcher-boat",
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                {
                    "content": "captains kept records for us of",
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                {
                    "content": "their sightings of protected spe-",
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                },
                {
                    "content": "October-November-December 1992",
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                    "content": "2",
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                {
                    "content": "Mammal",
                    "polygon": [
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                    "confidence": 0.995,
                    "span": {
                        "offset": 11784,
                        "length": 6
                    }
                },
                {
                    "content": "Laboratory.",
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                    "confidence": 0.994,
                    "span": {
                        "offset": 11791,
                        "length": 11
                    }
                },
                {
                    "content": "AFSC",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
                        "offset": 11803,
                        "length": 4
                    }
                },
                {
                    "content": "Quarterly",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
                        "offset": 11808,
                        "length": 9
                    }
                },
                {
                    "content": "Report",
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                    "confidence": 0.995,
                    "span": {
                        "offset": 11818,
                        "length": 6
                    }
                },
                {
                    "content": "3",
                    "polygon": [
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                        10.1914,
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                    ],
                    "confidence": 0.996,
                    "span": {
                        "offset": 11825,
                        "length": 1
                    }
                }
            ],
            "lines": [
                {
                    "content": "cies of whales. They spotted blue",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8258,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "whales every year and in 1970 re-",
                    "polygon": [
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                        3.0504,
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                    "spans": [
                        {
                            "offset": 8292,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "ported 195 sightings (some doubt-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8326,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "less repeat sightings of the same",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8360,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "animals). From 1980 to 1983,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8394,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "cetologist Tom Dohl and his col-",
                    "polygon": [
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                    "spans": [
                        {
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                            "length": 32
                        }
                    ]
                },
                {
                    "content": "leagues at the University of Califor-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8456,
                            "length": 37
                        }
                    ]
                },
                {
                    "content": "nia, Santa Cruz, conducted regular",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8494,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "aerial surveys of cetaceans off",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8529,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "central California between Point",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8561,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "Conception and Cape Mendocino;",
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                    ],
                    "spans": [
                        {
                            "offset": 8594,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "they saw many blue whales and",
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                    ],
                    "spans": [
                        {
                            "offset": 8625,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "found the same pattern of sea-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8655,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "sonal distribution that we had",
                    "polygon": [
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                        }
                    ]
                },
                {
                    "content": "noted in the 1960s.",
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                    "spans": [
                        {
                            "offset": 8717,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "Beginning in 1962, I conducted",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8737,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "many whale marking cruises dur-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8768,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "ing the winter and spring months",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8800,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "off the west coast of Mexico. I was",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8833,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "happily surprised to find that a",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 8869,
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                        }
                    ]
                },
                {
                    "content": "goodly number of blue whales still",
                    "polygon": [
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                        4.4128,
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                    "spans": [
                        {
                            "offset": 8902,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "ranged all along the west coast of",
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                    "spans": [
                        {
                            "offset": 8937,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "Baja California, mainly from March",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 8972,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "through June, and also in the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 9007,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "southern Gulf of California from",
                    "polygon": [
                        0.9613,
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                        5.0698,
                        3.0552,
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                    ],
                    "spans": [
                        {
                            "offset": 9037,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "January to March. Another link in",
                    "polygon": [
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                        3.0552,
                        5.2364,
                        3.0552,
                        5.384,
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                    "spans": [
                        {
                            "offset": 9070,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "the blue whale's migration pattern",
                    "polygon": [
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                        5.4078,
                        3.0504,
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                    ],
                    "spans": [
                        {
                            "offset": 9104,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "appeared in March 1975 during a",
                    "polygon": [
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                        3.0552,
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                    "spans": [
                        {
                            "offset": 9139,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "marking cruise aboard the Soviet",
                    "polygon": [
                        0.9565,
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                        5.7315,
                        3.0599,
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                    ],
                    "spans": [
                        {
                            "offset": 9171,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "whaler Vnushitelnyi when Russian",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 9204,
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                        }
                    ]
                },
                {
                    "content": "biologists and I discovered blue",
                    "polygon": [
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                        3.0552,
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                        {
                            "offset": 9237,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "whales in the eastern tropical Pa-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 9270,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "cific at lat. 9 °N, long. 94°W. About",
                    "polygon": [
                        0.9613,
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                        3.0599,
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                    ],
                    "spans": [
                        {
                            "offset": 9305,
                            "length": 37
                        }
                    ]
                },
                {
                    "content": "the same time, porpoise observers",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 9343,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "aboard tuna fishing vessels also",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 9377,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "sighted blue whales in the same",
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                    ],
                    "spans": [
                        {
                            "offset": 9410,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "general area.",
                    "polygon": [
                        0.9613,
                        7.0739,
                        1.775,
                        7.0691,
                        1.775,
                        7.2167,
                        0.9613,
                        7.2167
                    ],
                    "spans": [
                        {
                            "offset": 9442,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "At one time I thought that the",
                    "polygon": [
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                        5.268,
                        1.1282,
                        5.268,
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                        3.4025,
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                    ],
                    "spans": [
                        {
                            "offset": 9456,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "blue whales off California and Baja",
                    "polygon": [
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                        1.2853,
                        5.2728,
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                    ],
                    "spans": [
                        {
                            "offset": 9487,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "California were the same animals",
                    "polygon": [
                        3.1836,
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                        1.4519,
                        5.2775,
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                    ],
                    "spans": [
                        {
                            "offset": 9523,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "that spent the late summer in the",
                    "polygon": [
                        3.1932,
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                        1.6138,
                        5.2775,
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                    ],
                    "spans": [
                        {
                            "offset": 9556,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "Gulf of Alaska. As more data accu-",
                    "polygon": [
                        3.1979,
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                        1.7804,
                        5.268,
                        1.9279,
                        3.1979,
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                    ],
                    "spans": [
                        {
                            "offset": 9590,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "mulated, this hypothesis became",
                    "polygon": [
                        3.1932,
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                        5.2728,
                        1.947,
                        5.268,
                        2.0993,
                        3.1932,
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                    ],
                    "spans": [
                        {
                            "offset": 9625,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "untenable, and I am now con-",
                    "polygon": [
                        3.1979,
                        2.1088,
                        5.268,
                        2.1088,
                        5.268,
                        2.2564,
                        3.1979,
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                    ],
                    "spans": [
                        {
                            "offset": 9657,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "vinced that these California blues",
                    "polygon": [
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                        2.2707,
                        5.268,
                        2.423,
                        3.1932,
                        2.4183
                    ],
                    "spans": [
                        {
                            "offset": 9686,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "constitute a discrete local popula-",
                    "polygon": [
                        3.1979,
                        2.4373,
                        5.268,
                        2.4421,
                        5.268,
                        2.5944,
                        3.1979,
                        2.5849
                    ],
                    "spans": [
                        {
                            "offset": 9721,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "tion that ranges seasonally be-",
                    "polygon": [
                        3.1884,
                        2.6039,
                        5.268,
                        2.6087,
                        5.268,
                        2.761,
                        3.1884,
                        2.7515
                    ],
                    "spans": [
                        {
                            "offset": 9757,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "tween central California and the",
                    "polygon": [
                        3.1884,
                        2.7658,
                        5.2728,
                        2.7658,
                        5.2728,
                        2.9181,
                        3.1884,
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                    ],
                    "spans": [
                        {
                            "offset": 9789,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "Cabo San Lucas region of Mexico.",
                    "polygon": [
                        3.1979,
                        2.9276,
                        5.2585,
                        2.9371,
                        5.2585,
                        3.0895,
                        3.1979,
                        3.0799
                    ],
                    "spans": [
                        {
                            "offset": 9822,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "This idea is supported by the abun-",
                    "polygon": [
                        3.1932,
                        3.099,
                        5.268,
                        3.099,
                        5.268,
                        3.2513,
                        3.1932,
                        3.2466
                    ],
                    "spans": [
                        {
                            "offset": 9855,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "dance of certain warm-water epi-",
                    "polygon": [
                        3.1884,
                        3.2656,
                        5.2728,
                        3.2656,
                        5.2728,
                        3.4227,
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                    ],
                    "spans": [
                        {
                            "offset": 9891,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "zoites on the California blue",
                    "polygon": [
                        3.1932,
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                        3.4275,
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                        3.575
                    ],
                    "spans": [
                        {
                            "offset": 9924,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "whales: the suckerfish Remora",
                    "polygon": [
                        3.1884,
                        3.5988,
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                        5.2632,
                        3.7416,
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                    ],
                    "spans": [
                        {
                            "offset": 9954,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "australis,",
                    "polygon": [
                        3.1884,
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                        3.7595,
                        3.7702,
                        3.7595,
                        3.8987,
                        3.1884,
                        3.894
                    ],
                    "spans": [
                        {
                            "offset": 9984,
                            "length": 10
                        }
                    ]
                },
                {
                    "content": "the",
                    "polygon": [
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                    "spans": [
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                {
                    "content": "barnacle",
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                },
                {
                    "content": "Xenobalanus globicipitis, and the",
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                    "content": "copepods",
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                    "content": "Pennella",
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                {
                    "content": "balaenopterae and Balaenophilus",
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                {
                    "content": "unisetis. In contrast, I have rarely",
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                {
                    "content": "found these creatures on fin or sei",
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                {
                    "content": "whales taken off California, and our",
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                },
                {
                    "content": "marking program revealed that",
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                },
                {
                    "content": "these two species of whales mi-",
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                {
                    "content": "grate as far as the Gulf of Alaska.",
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                {
                    "content": "Wolman and I are currently analyz-",
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                },
                {
                    "content": "ing all of our catch and sighting",
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                },
                {
                    "content": "data in an attempt to draw a coher-",
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                {
                    "content": "ent picture of the migrations of",
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                },
                {
                    "content": "southeastern North Pacific blue",
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                },
                {
                    "content": "whales. This is difficult because",
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                },
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                    "content": "the whales are nomadic and follow",
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                {
                    "content": "krill pastures, causing their travel",
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                {
                    "content": "routes and schedules to vary from",
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                },
                {
                    "content": "year to year. Off central California,",
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                {
                    "content": "we found that the whales feed",
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                {
                    "content": "solely on euphausiids - usually",
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                },
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                    "content": "Euphausia pacifica but sometimes",
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                {
                    "content": "the more coastal Thysanoessa",
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                {
                    "content": "spinifera -whereas off Baja their",
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                },
                {
                    "content": "main food source appears to be",
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                },
                {
                    "content": "both the pelagic \"red crab\"",
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                {
                    "content": "Pleuroncodes planipes, which oc-",
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                {
                    "content": "curs periodically in immense",
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                {
                    "content": "swarms at the surface, and the eu-",
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                {
                    "content": "phausiid Nyctiphanes simplex.",
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                {
                    "content": "Photo-identification studies of",
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                },
                {
                    "content": "blue whales were conducted",
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                {
                    "content": "around the Farallon Islands, Cali-",
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                {
                    "content": "fornia, by the Cascadia Research",
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                },
                {
                    "content": "Collective, Olympia, Washington,",
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                {
                    "content": "from 1986 to 1988, under contract",
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                },
                {
                    "content": "to NOAA, and also in the Gulf of",
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                },
                {
                    "content": "California off Loreto by the Mingan",
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                {
                    "content": "Island Cetacean Study, St. Lam-",
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                    "content": "bert, Quebec, from 1982 to 1985,",
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                {
                    "content": "working independently. These re-",
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                {
                    "content": "search groups report that they",
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                {
                    "content": "have identified some of the same",
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                {
                    "content": "whales in both geographical areas.",
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                    "content": "Besides revealing the movements",
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                {
                    "content": "of individual whales, studies like",
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                {
                    "content": "these may eventually permit an es-",
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                {
                    "content": "timate of the size of the southeast-",
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                {
                    "content": "ern North Pacific blue whale",
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                {
                    "content": "population -- perhaps one of only a",
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                    "content": "few remaining viable populations",
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                {
                    "content": "of the earth's greatest animal.",
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                {
                    "content": "This article was written by",
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                {
                    "content": "DALE W. RICE of the National",
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                {
                    "content": "Marine Mammal Laboratory.",
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                {
                    "content": "AFSC Quarterly Report",
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                    "content": "3",
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                    "content": "DIVISION",
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                    ]
                },
                {
                    "content": "the ABL of large numbers of juve-",
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                },
                {
                    "content": "nile red king crab crawling out of",
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                {
                    "content": "Captains Bay and dying on the",
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                    "content": "beach. During cursory beach sur-",
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                    "content": "veys, the scientists observed many",
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                },
                {
                    "content": "hundreds of king crab carapaces",
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                {
                    "content": "above the high watermark as well",
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                {
                    "content": "as a smaller number of moribund",
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                },
                {
                    "content": "crabs. Oxygen measurements at",
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                {
                    "content": "depth were made at 15 sites; most",
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                },
                {
                    "content": "sites had been measured pre-",
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                },
                {
                    "content": "viously in June 1992. Oxygen lev-",
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                },
                {
                    "content": "els were lower at the bottom at",
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                {
                    "content": "several sites compared to the June",
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                {
                    "content": "measurements. In June, none of",
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                {
                    "content": "the bottom samples had oxygen",
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                },
                {
                    "content": "levels below 75% saturation. In",
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                {
                    "content": "late September, eight sites had ox-",
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                },
                {
                    "content": "ygen levels less than 25% satura-",
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                },
                {
                    "content": "tion, with the lowest oxygen value",
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                },
                {
                    "content": "at 6% saturation. The scientists",
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                    ]
                },
                {
                    "content": "could not confirm the cause of the",
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                },
                {
                    "content": "low oxygen environment but did",
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                },
                {
                    "content": "confirm that the environment was",
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                    ]
                },
                {
                    "content": "severely stressed.",
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                },
                {
                    "content": "The preceding information was",
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                    ]
                },
                {
                    "content": "provided by LINCOLN FREESE.",
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                    ]
                },
                {
                    "content": "New Information on Coho",
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                },
                {
                    "content": "Distribution and Abundance in",
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                    ]
                },
                {
                    "content": "Taku River",
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                            "offset": 13125,
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                    ]
                },
                {
                    "content": "The primary research effort in",
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                },
                {
                    "content": "1992 of the Stock Assessment",
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                },
                {
                    "content": "Task has been the study of distri-",
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                },
                {
                    "content": "bution and abundance of coho",
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                    ]
                },
                {
                    "content": "salmon (Oncorhynchus kisutch) in",
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                },
                {
                    "content": "the Taku River, a transboundary",
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                },
                {
                    "content": "U.S .- Canada river with headwaters",
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                    "content": "in British Columbia. The research",
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                {
                    "content": "program was developed bilaterally",
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                {
                    "content": "with the Canada Department of",
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                    "content": "Fisheries and Oceans and the",
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                    "content": "Alaska Department of Fish and",
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                {
                    "content": "Game as part of the Pacific Salmon",
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                    "content": "Treaty through the Pacific Salmon",
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                    "content": "Commission Transboundary River",
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                {
                    "content": "Technical Committee.",
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                    "content": "The study began in mid-August",
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                },
                {
                    "content": "and ran until late October with a",
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                    "content": "field crew operating from a tent",
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                {
                    "content": "camp at Taku Point in the estuary.",
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                    "content": "The seven-person crew deployed",
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                },
                {
                    "content": "drift gill nets and captured 619 re-",
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                {
                    "content": "turning adult coho salmon and",
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                {
                    "content": "placed radio tags in 354 fish which",
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                {
                    "content": "were released in the lower river.",
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                },
                {
                    "content": "Another 60 fish were released with",
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                    "content": "radio tags at Canyon Island, near",
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                {
                    "content": "the U.S .- Canada border, following",
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                    "content": "capture in fish wheels there. A fully",
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                {
                    "content": "operational system of 22 station-",
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                },
                {
                    "content": "ary tracking towers covered main",
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                    "spans": [
                        {
                            "offset": 14116,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "tributaries and key points for fish",
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                    ]
                },
                {
                    "content": "passage in the whole Taku River",
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                        {
                            "offset": 14185,
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                        }
                    ]
                },
                {
                    "content": "drainage. The tracking towers de-",
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                        }
                    ]
                },
                {
                    "content": "tected, decoded, and stored radio-",
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                            "offset": 14251,
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                        }
                    ]
                },
                {
                    "content": "tag information and transmitted",
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                    "spans": [
                        {
                            "offset": 14286,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "the information via a NOAA satel-",
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                    ]
                },
                {
                    "content": "lite relay to the ABL every 3 hours.",
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                            "offset": 14352,
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                        }
                    ]
                },
                {
                    "content": "Most of the 400-plus radio-",
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                    "spans": [
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                            "offset": 14389,
                            "length": 27
                        }
                    ]
                },
                {
                    "content": "tagged coho salmon resumed up-",
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                        }
                    ]
                },
                {
                    "content": "river migration within a few days of",
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                    ]
                },
                {
                    "content": "tagging, and most continued into",
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                            "offset": 14485,
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                    ]
                },
                {
                    "content": "Canada. A late-season helicopter",
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                    ]
                },
                {
                    "content": "survey of spawning areas along",
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                    "spans": [
                        {
                            "offset": 14551,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "the mainstem Taku River on 1 De-",
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                            "offset": 14582,
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                    ]
                },
                {
                    "content": "cember located 141 radio-tagged",
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                            "offset": 14615,
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                        }
                    ]
                },
                {
                    "content": "coho salmon, with 106 in Canada",
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                    ]
                },
                {
                    "content": "and 35 in the United States.",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "Twenty-five fish were still alive and",
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                    ]
                },
                {
                    "content": "active: 23 in Canada and 2 in the",
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                    ]
                },
                {
                    "content": "United States. In mid-December",
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                    ]
                },
                {
                    "content": "1992, the Task began analyzing",
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                            "offset": 14811,
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                        }
                    ]
                },
                {
                    "content": "findings and compiling results to",
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                    "spans": [
                        {
                            "offset": 14842,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "show the distribution and migra-",
                    "polygon": [
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                    "spans": [
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                            "offset": 14876,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "tions of radio-tagged fish that were",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 14909,
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                        }
                    ]
                },
                {
                    "content": "followed on the Taku River in 1992.",
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                        }
                    ]
                },
                {
                    "content": "The study findings showed that",
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                        }
                    ]
                },
                {
                    "content": "gill nets worked well to capture",
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                            "offset": 15013,
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                        }
                    ]
                },
                {
                    "content": "adult coho salmon, with low inci-",
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                    ]
                },
                {
                    "content": "dence of injury related to capture,",
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                    ]
                },
                {
                    "content": "and tagged fish quickly resumed",
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                        }
                    ]
                },
                {
                    "content": "upriver movement. The stationary",
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                    ]
                },
                {
                    "content": "tracking system with satellite relay",
                    "polygon": [
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                    ]
                },
                {
                    "content": "worked well in its first full season of",
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                            "offset": 15218,
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                    ]
                },
                {
                    "content": "operation. Task members were",
                    "polygon": [
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                    "spans": [
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                            "offset": 15258,
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                        }
                    ]
                },
                {
                    "content": "able to follow migration of a major",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 15287,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "coho run in a large, remote glacial",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 15323,
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                        }
                    ]
                },
                {
                    "content": "river system from start to end of the",
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                    "spans": [
                        {
                            "offset": 15359,
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                        }
                    ]
                },
                {
                    "content": "run through severe and extreme",
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                    "spans": [
                        {
                            "offset": 15397,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "weather conditions. This was a",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 15428,
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                        }
                    ]
                },
                {
                    "content": "first.",
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                    "spans": [
                        {
                            "offset": 15459,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "The preceding information was",
                    "polygon": [
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                        7.4927,
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                        5.597,
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                    ],
                    "spans": [
                        {
                            "offset": 15466,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "provided by JAMES OLSEN.",
                    "polygon": [
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                    "spans": [
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                            "offset": 15496,
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                        }
                    ]
                },
                {
                    "content": "Long-Term Changes on Two",
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                            "offset": 15521,
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                        }
                    ]
                },
                {
                    "content": "Populations of Chum Salmon",
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                        }
                    ]
                },
                {
                    "content": "Scientists at the ABL have sam-",
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                        }
                    ]
                },
                {
                    "content": "pled two populations of chum",
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                    "spans": [
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                            "offset": 15605,
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                        }
                    ]
                },
                {
                    "content": "salmon (O. keta) in North America",
                    "polygon": [
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                            "offset": 15634,
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                        }
                    ]
                },
                {
                    "content": "for 20 years (1972-92) to evaluate",
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                    "spans": [
                        {
                            "offset": 15668,
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                        }
                    ]
                },
                {
                    "content": "long-term changes in growth and",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 15703,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "size and age at maturity. One pop-",
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                    ],
                    "spans": [
                        {
                            "offset": 15735,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "ulation is from Fish Creek, a tribu-",
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                            "offset": 15770,
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                        }
                    ]
                },
                {
                    "content": "tary of the Salmon River near",
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                        {
                            "offset": 15807,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "Hyder, Alaska, at the head of Port-",
                    "polygon": [
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                    "spans": [
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                            "offset": 15837,
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                        }
                    ]
                },
                {
                    "content": "land Canal. Chum salmon from",
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                    "spans": [
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                            "offset": 15873,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "this area are renowned for their",
                    "polygon": [
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                            "offset": 15902,
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                    ]
                },
                {
                    "content": "large size. The other population is",
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                        }
                    ]
                },
                {
                    "content": "a hatchery population from the",
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                        }
                    ]
                },
                {
                    "content": "Quilcene National Fish Hatchery",
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                            "offset": 16002,
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                        }
                    ]
                },
                {
                    "content": "(U.S. Fish and Wildlife Service) on",
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                    "spans": [
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                            "offset": 16034,
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                        }
                    ]
                },
                {
                    "content": "Hood Canal in Puget Sound,",
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                        7.4927,
                        6.9448,
                        5.3974,
                        6.94
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                    "spans": [
                        {
                            "offset": 16070,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "Washington.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 16097,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "Maturing chum salmon return",
                    "polygon": [
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                        7.1158,
                        7.5117,
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                    "spans": [
                        {
                            "offset": 16109,
                            "length": 27
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                    ]
                },
                {
                    "content": "to Fish Creek starting in late June,",
                    "polygon": [
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                    "spans": [
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                            "offset": 16137,
                            "length": 36
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                    ]
                },
                {
                    "content": "and by early October only a few",
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                    "spans": [
                        {
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                            "length": 31
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                    ]
                },
                {
                    "content": "fish are still entering the stream.",
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                    "spans": [
                        {
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                    ]
                },
                {
                    "content": "Quilcene Hatchery chum salmon",
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                    "spans": [
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                            "length": 29
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                    ]
                },
                {
                    "content": "arrive much later in late November,",
                    "polygon": [
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                    "spans": [
                        {
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                            "length": 35
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                    ]
                },
                {
                    "content": "and by early January the run is",
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                    "spans": [
                        {
                            "offset": 16308,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "mostly over. Comparing age-4",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 16340,
                            "length": 28
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                    ]
                },
                {
                    "content": "males, both populations show a",
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                    "spans": [
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                            "length": 30
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                    ]
                },
                {
                    "content": "strong decline in size at maturity",
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                    "spans": [
                        {
                            "offset": 16400,
                            "length": 34
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                    ]
                },
                {
                    "content": "(Figs. 1 and 2). At the same time,",
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                        {
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                    ]
                },
                {
                    "content": "the average age at maturity for",
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                            "length": 31
                        }
                    ]
                },
                {
                    "content": "both populations is increasing as",
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                    "spans": [
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                    ]
                },
                {
                    "content": "growth decreases. This trend has",
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                    "spans": [
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                    ]
                },
                {
                    "content": "been especially strong since the",
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                    "spans": [
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                    ]
                },
                {
                    "content": "late 1980s. Data from Japanese",
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                    ]
                },
                {
                    "content": "October-November-December 1992",
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                            "length": 30
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                    ]
                },
                {
                    "content": "4",
                    "polygon": [
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                    ]
                }
            ],
            "spans": [
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                    "offset": 11827,
                    "length": 4838
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            ]
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            "unit": "inch",
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                {
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                {
                    "content": "-",
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                    "content": "MEAN LENGTH (MM) OF AGE 4 CHUM SALMON",
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                {
                    "content": ". 550",
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                        7.7148,
                        1.3951,
                        7.791,
                        1.2046,
                        7.8006
                    ],
                    "spans": [
                        {
                            "offset": 17062,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "500",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17066,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "1970",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17070,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1975",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17075,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1980",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17080,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1985",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17085,
                            "length": 4
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                    ]
                },
                {
                    "content": "1990",
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                    "spans": [
                        {
                            "offset": 17090,
                            "length": 4
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                    ]
                },
                {
                    "content": "1995",
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                    "spans": [
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                            "offset": 17095,
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                    ]
                },
                {
                    "content": "YEAR OF RETURN",
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                    "spans": [
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                            "offset": 17100,
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                    ]
                },
                {
                    "content": "Figure 2. The mean length of age-4 chum salmon males from Quilcene",
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                            "length": 66
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                    ]
                },
                {
                    "content": "Hatchery, 1972-92.",
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                    ]
                },
                {
                    "content": "chum salmon research also show",
                    "polygon": [
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                    "spans": [
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                            "offset": 17201,
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                    ]
                },
                {
                    "content": "this trend. The decrease in size",
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                    "spans": [
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                    ]
                },
                {
                    "content": "seems to relate to anomalies in",
                    "polygon": [
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                    "spans": [
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                            "offset": 17265,
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                    ]
                },
                {
                    "content": "climate change; however, density-",
                    "polygon": [
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                            "offset": 17297,
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                    ]
                },
                {
                    "content": "dependent factors in the ocean",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17331,
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                    ]
                },
                {
                    "content": "may also play a role. If the trend of",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17362,
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                        }
                    ]
                },
                {
                    "content": "decreasing size at maturity contin-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17400,
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                        }
                    ]
                },
                {
                    "content": "ues, it could signal a major change",
                    "polygon": [
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                        {
                            "offset": 17436,
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                        }
                    ]
                },
                {
                    "content": "to lower survival rates than have",
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                            "offset": 17472,
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                        }
                    ]
                },
                {
                    "content": "been seen in recent years.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17506,
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                        }
                    ]
                },
                {
                    "content": "The preceding information was",
                    "polygon": [
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                    "spans": [
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                            "offset": 17533,
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                        }
                    ]
                },
                {
                    "content": "provided by JOHN HELLE and",
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                    "spans": [
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                            "offset": 17563,
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                        }
                    ]
                },
                {
                    "content": "MARGARET HOFFMAN.",
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                    "spans": [
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                            "offset": 17590,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "Time Series Models",
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                    "spans": [
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                            "offset": 17608,
                            "length": 18
                        }
                    ]
                },
                {
                    "content": "Combined With Kalman Filter",
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                        }
                    ]
                },
                {
                    "content": "Scientists at the ABL recently",
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                    "spans": [
                        {
                            "offset": 17655,
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                        }
                    ]
                },
                {
                    "content": "completed studies showing how",
                    "polygon": [
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                    "spans": [
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                            "offset": 17686,
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                        }
                    ]
                },
                {
                    "content": "simple biomass dynamics models",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17716,
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                        }
                    ]
                },
                {
                    "content": "can be used to assess physical",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17747,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "magnitude and potential produc-",
                    "polygon": [
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                        2.224,
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                    "spans": [
                        {
                            "offset": 17778,
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                        }
                    ]
                },
                {
                    "content": "tion of a fish stock if adequate time",
                    "polygon": [
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                    "spans": [
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                            "offset": 17810,
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                    ]
                },
                {
                    "content": "series of abundance measures",
                    "polygon": [
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                    "spans": [
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                            "offset": 17848,
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                    ]
                },
                {
                    "content": "and catches are available. Fitting",
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                    ]
                },
                {
                    "content": "biomass dynamics models to",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17912,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "these time series for estimating un-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 17939,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "known parameters requires recog-",
                    "polygon": [
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                    "spans": [
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                            "offset": 17976,
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                },
                {
                    "content": "nizing both process and",
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                    "spans": [
                        {
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                    ]
                },
                {
                    "content": "measurement errors. The Kalman",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18033,
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                        }
                    ]
                },
                {
                    "content": "filter, combined with state-space",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18064,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "models of biomass dynamics, pro-",
                    "polygon": [
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                        3.886,
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                    "spans": [
                        {
                            "offset": 18098,
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                        }
                    ]
                },
                {
                    "content": "vides the analytical basis for such",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18131,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "fitting. After parameters are esti-",
                    "polygon": [
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                        7.5279,
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                    "spans": [
                        {
                            "offset": 18167,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "mated, the filter can be used to",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 18203,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "estimate current physical condi-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18236,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "tion of the stock: biomass, ex-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18269,
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                        }
                    ]
                },
                {
                    "content": "pected production of biomass",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18301,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "during the next year, and biomass",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18330,
                            "length": 33
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                    ]
                },
                {
                    "content": "at year's end under the chosen",
                    "polygon": [
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                        7.5422,
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                    "spans": [
                        {
                            "offset": 18364,
                            "length": 30
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                    ]
                },
                {
                    "content": "harvest level. Further, fixed-",
                    "polygon": [
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                    "spans": [
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                            "offset": 18395,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "interval smoothing revises esti-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18426,
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                    ]
                },
                {
                    "content": "mates of biomass from the",
                    "polygon": [
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                        7.5374,
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                    "spans": [
                        {
                            "offset": 18459,
                            "length": 25
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                    ]
                },
                {
                    "content": "beginning of observation to in-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18485,
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                    ]
                },
                {
                    "content": "clude information to the present.",
                    "polygon": [
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                    "spans": [
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                            "offset": 18517,
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                    ]
                },
                {
                    "content": "Two applications illustrate the",
                    "polygon": [
                        5.4424,
                        6.2004,
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                        6.2004,
                        7.5374,
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                        5.4424,
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                    "spans": [
                        {
                            "offset": 18551,
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                    ]
                },
                {
                    "content": "methodology. First, the Schaefer",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18583,
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                    ]
                },
                {
                    "content": "model is fit by Kalman filtering to",
                    "polygon": [
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                        6.5338,
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                    "spans": [
                        {
                            "offset": 18616,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "time series of catch and abun-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18652,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "dance indices from the yellowfin",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 18683,
                            "length": 32
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                    ]
                },
                {
                    "content": "tuna fishery of the eastern Tropical",
                    "polygon": [
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                    "spans": [
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                            "offset": 18716,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "Pacific Ocean. Relative magni-",
                    "polygon": [
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                    "spans": [
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                            "offset": 18753,
                            "length": 30
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                    ]
                },
                {
                    "content": "tudes of resulting estimates of an-",
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                    "content": "eye",
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                {
                    "content": "6",
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                {
                    "content": "October-November-December",
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                    "content": "Biomass (Millions of Pounds)",
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                {
                    "content": "No Process Error",
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                    "content": "1000",
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                    "content": "800",
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                            "length": 4
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                {
                    "content": "1955",
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                            "offset": 19465,
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                {
                    "content": "1960",
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                    "content": "1965",
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                {
                    "content": "Beginning of Year",
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                {
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                {
                    "content": "* = temperature anomaly",
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                {
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                {
                    "content": "-0.1",
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                    "content": "*",
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                {
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                {
                    "content": "Temperature Anomaly (Degrees Celsius)",
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                    "content": "1930",
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                    "content": "Figure 4. Pink salmon catches off southern Southeast Alaska, 1917-91;",
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                    "content": "smoothed estimates of expected catch based on the random trending recruit-",
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                    "content": "between the two causes (Fig. 3).",
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                {
                    "content": "Second, a random trending re-",
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                        {
                            "offset": 20089,
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                    ]
                },
                {
                    "content": "cruitment model is fit to pink",
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                    "spans": [
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                            "offset": 20119,
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                },
                {
                    "content": "salmon catches in southern South-",
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                    ]
                },
                {
                    "content": "east Alaska, 1917-91, and the ex-",
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                },
                {
                    "content": "pected catches are produced by",
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                },
                {
                    "content": "fixed-interval smoothing. Temper-",
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                },
                {
                    "content": "ature anomalies of the Northern",
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                },
                {
                    "content": "Hemisphere land masses trend",
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                },
                {
                    "content": "similarly to the expected catches",
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                {
                    "content": "since the 1930s, indicating large-",
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                {
                    "content": "scale climate changes may under-",
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                {
                    "content": "lie the production trend (Fig. 4).",
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                },
                {
                    "content": "The preceding information was",
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                },
                {
                    "content": "provided by JAMES OLSEN.",
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                },
                {
                    "content": "Progress in Salmon Stock",
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                },
                {
                    "content": "Identification",
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                },
                {
                    "content": "The U.S .- Canada Salmon Pro-",
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                },
                {
                    "content": "gram has been involved in stock",
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                },
                {
                    "content": "identification activities in northern",
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                },
                {
                    "content": "British Columbia and Southeast",
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                {
                    "content": "Alaska since 1982. Major efforts",
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                {
                    "content": "were made to establish baseline",
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                },
                {
                    "content": "information on sockeye (O.nerka),",
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                },
                {
                    "content": "chum, and pink salmon (O.",
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                },
                {
                    "content": "gorbuscha). Baseline information",
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                {
                    "content": "on",
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                },
                {
                    "content": "chinook",
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                },
                {
                    "content": "salmon (O.",
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                },
                {
                    "content": "tshawytscha) was concentrated in",
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                },
                {
                    "content": "Southeast Alaska. Although ef-",
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                },
                {
                    "content": "forts were focused on genetic",
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                },
                {
                    "content": "stock identification (GSI), baseline",
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                            "offset": 20981,
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                    ]
                },
                {
                    "content": "information on parasites and scale",
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                },
                {
                    "content": "characteristics that could be used",
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                {
                    "content": "for stock identification were also",
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                {
                    "content": "pursued. For sockeye salmon in",
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                },
                {
                    "content": "particular, the combination of GSI,",
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                },
                {
                    "content": "parasites, and scale characteris-",
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                },
                {
                    "content": "tics has proved to be a potentially",
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                },
                {
                    "content": "powerful tool for differentiating",
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                },
                {
                    "content": "stocks.",
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                            "offset": 21294,
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                },
                {
                    "content": "The status of genetic informa-",
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                },
                {
                    "content": "tion by species follows:",
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                },
                {
                    "content": "Chum salmon - Tissue sam-",
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                },
                {
                    "content": "ples from chum salmon popula-",
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                },
                {
                    "content": "tions were collected from 1986 to",
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                {
                    "content": "1990 from northern British Colum-",
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                {
                    "content": "bia to northern Southeast Alaska.",
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                },
                {
                    "content": "These samples have been ana-",
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                    "content": "lyzed by starch-gel electrophore-",
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                },
                {
                    "content": "sis in the laboratory. The allelic",
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                    "content": "frequency data obtained from this",
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                    "content": "technique are being analyzed to",
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                },
                {
                    "content": "determine the extent of genetic dif-",
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                {
                    "content": "ferentiation that occurs between",
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                {
                    "content": "chum salmon populations. A re-",
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                },
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                    "content": "port of the results of the work with",
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                },
                {
                    "content": "chum and other salmon species",
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                },
                {
                    "content": "will be presented at the interna-",
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                    "content": "tional symposium \"Genetics of",
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                {
                    "content": "Subarctic Fish and Shellfish\" to be",
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                        3.0649,
                        2.2212,
                        0.9438,
                        2.2212
                    ],
                    "spans": [
                        {
                            "offset": 22290,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "useful in genetic stock identifica-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 22324,
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                    ]
                },
                {
                    "content": "tion. A report of the results is ex-",
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                },
                {
                    "content": "pected in 1993.",
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                },
                {
                    "content": "Pink salmon - The analysis of",
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                            "offset": 22413,
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                    ]
                },
                {
                    "content": "even-year pink salmon from",
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                        {
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                    ]
                },
                {
                    "content": "Japan, Russia, and Alaska was re-",
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                },
                {
                    "content": "peated to include two additional",
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                    "spans": [
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                            "offset": 22504,
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                },
                {
                    "content": "collections from Kamchatka (Rus-",
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                            "offset": 22537,
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                },
                {
                    "content": "sia). Analysis of the genetic differ-",
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                },
                {
                    "content": "ences between populations",
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                    "spans": [
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                            "offset": 22608,
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                },
                {
                    "content": "revealed that fish from east and",
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                },
                {
                    "content": "west Kamchatka can be differenti-",
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                },
                {
                    "content": "ated and that fish from Japan and",
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                },
                {
                    "content": "Sakhalin Island are genetically",
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                },
                {
                    "content": "very similar. The greatest genetic",
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                },
                {
                    "content": "difference was found between",
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                            "offset": 22802,
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                },
                {
                    "content": "Alaska fish and Asian fish. Certain",
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                    "spans": [
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                            "offset": 22831,
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                    ]
                },
                {
                    "content": "loci were particularly useful for dis-",
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                },
                {
                    "content": "tinguishing between regions.",
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                    ]
                },
                {
                    "content": "Chinook salmon - Tissue sam-",
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                },
                {
                    "content": "ples were collected from chinook",
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                },
                {
                    "content": "salmon in about 25 river and tribu-",
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                },
                {
                    "content": "tary systems in Southeast Alaska.",
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                },
                {
                    "content": "Laboratory analysis has been",
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                {
                    "content": "completed for about half the sam-",
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                },
                {
                    "content": "ples and should be completed for",
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                            "offset": 23130,
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                },
                {
                    "content": "all the samples by spring 1993.",
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                    ]
                },
                {
                    "content": "Preliminary analyses show that ex-",
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                },
                {
                    "content": "cellent regional differentiation ex-",
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                    ]
                },
                {
                    "content": "ists.",
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                },
                {
                    "content": "The preceding information was",
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                        {
                            "offset": 23273,
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                        }
                    ]
                },
                {
                    "content": "provided by JAMES OLSEN.",
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                            "offset": 23303,
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                    ]
                },
                {
                    "content": "Currents on Seamounts",
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                    ]
                },
                {
                    "content": "May Relate to Salmon-Driftnet",
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                },
                {
                    "content": "Interactions",
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                            "offset": 23380,
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                    ]
                },
                {
                    "content": "Little information is available on",
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                            "offset": 23393,
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                },
                {
                    "content": "the physical environment of the",
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                },
                {
                    "content": "Northern Emperor Seamount",
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                },
                {
                    "content": "Chain (NESC). Present theory is",
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                },
                {
                    "content": "that surface currents are deflected",
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                {
                    "content": "by the chain and quasi-stationary",
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                },
                {
                    "content": "rotating columns (Taylor columns)",
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                {
                    "content": "of water develop on some of the",
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                },
                {
                    "content": "seamounts. The subarctic frontal",
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                },
                {
                    "content": "zone may also be trapped by the",
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                {
                    "content": "chain and intensified in the nearby",
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                },
                {
                    "content": "region. It is likely that increased",
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                },
                {
                    "content": "salmon abundance over the NESC",
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                            "offset": 23791,
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                },
                {
                    "content": "and the resulting large bycatches",
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                },
                {
                    "content": "of salmon observed in the 1990",
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                            "offset": 23856,
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                },
                {
                    "content": "Japanese squid driftnet fishery are",
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                },
                {
                    "content": "associated with these physical",
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                    "spans": [
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                            "offset": 23923,
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                        }
                    ]
                },
                {
                    "content": "characteristics.",
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                    "spans": [
                        {
                            "offset": 23954,
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                    ]
                },
                {
                    "content": "A joint study by the ABL and the",
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                    "spans": [
                        {
                            "offset": 23971,
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                },
                {
                    "content": "University of Alaska was initiated in",
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                    "spans": [
                        {
                            "offset": 24004,
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                    ]
                },
                {
                    "content": "summer 1992 on the biological",
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                            "offset": 24042,
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                    ]
                },
                {
                    "content": "and physical interactions associ-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "ated with the NESC. Field activi-",
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                },
                {
                    "content": "ties were completed from the",
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                {
                    "content": "Japanese research vessel",
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                },
                {
                    "content": "Hokusei Maru for the collection of",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24194,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "physical oceanographic data in",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24229,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "conjunction with Hokkaido Univer-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24260,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "sity of Japan. This data included",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24294,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "conductivity, temperature, and",
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                    "spans": [
                        {
                            "offset": 24328,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "depth profiles (CTDs); expendable",
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                    "spans": [
                        {
                            "offset": 24359,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "CTDs (XCTDs); and surface drift-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24393,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "ing buoys. Sea level, height, and",
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                            "offset": 24426,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "temperature data from satellite-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24460,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "borne sensors were also collected",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24493,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "as part of the study.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 24527,
                            "length": 21
                        }
                    ]
                },
                {
                    "content": "The buoys deployed from the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24549,
                            "length": 27
                        }
                    ]
                },
                {
                    "content": "ship are part of a much larger proj-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24577,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "ect called WOCE (World Ocean",
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                    "spans": [
                        {
                            "offset": 24614,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "Circulation Experiment), which is",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24643,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "processing the data from the satel-",
                    "polygon": [
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                    "spans": [
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                            "offset": 24677,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "lite-tracked drifting buoys. Seven",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 24713,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "buoys were deployed along the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24748,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "long. 170°E trackline, from lat.",
                    "polygon": [
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                    "spans": [
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                            "offset": 24778,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "48°N to 38°N. Two other buoys",
                    "polygon": [
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                            "offset": 24811,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "were deployed, one west of the",
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                    "spans": [
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                            "offset": 24841,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "seamounts at long. 155°E and the",
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                            "length": 32
                        }
                    ]
                },
                {
                    "content": "other east of the seamounts at",
                    "polygon": [
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                            "offset": 24905,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "long. 175°E. The initial drifter data",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 24936,
                            "length": 37
                        }
                    ]
                },
                {
                    "content": "support our model of current flow",
                    "polygon": [
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                    "spans": [
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                            "offset": 24974,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "in the NESC region. The analysis",
                    "polygon": [
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                            "offset": 25008,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "of the drifter data identified anti-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 25041,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "cyclonic motion over the Nintoku",
                    "polygon": [
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                    "spans": [
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                            "offset": 25078,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "Seamount that may be generated",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 25111,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "by a Taylor column. Continued",
                    "polygon": [
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                        8.7276,
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                    "spans": [
                        {
                            "offset": 25142,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "monitoring of the drifters will pro-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25172,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "vide additional information on sur-",
                    "polygon": [
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                        9.066,
                        5.2956,
                        9.2185,
                        3.227,
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                    "spans": [
                        {
                            "offset": 25209,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "face current flow over the NESC,",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25245,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "which will lead to a combined anal-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 25278,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "ysis (with CTD and altimeter data)",
                    "polygon": [
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                        5.3099,
                        9.7381,
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                    ],
                    "spans": [
                        {
                            "offset": 25314,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "of the current structure of the",
                    "polygon": [
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                        1.0868,
                        7.5359,
                        1.2393,
                        5.4053,
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                    ],
                    "spans": [
                        {
                            "offset": 25349,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "NESC.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25381,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "The preceding information was",
                    "polygon": [
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                        1.4204,
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                    ],
                    "spans": [
                        {
                            "offset": 25387,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "provided by JIM MURPHY and",
                    "polygon": [
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                        1.735,
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                    ],
                    "spans": [
                        {
                            "offset": 25417,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "STEVEN IGNELL.",
                    "polygon": [
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                        1.7446,
                        6.5206,
                        1.8923,
                        5.4339,
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                    ],
                    "spans": [
                        {
                            "offset": 25444,
                            "length": 14
                        }
                    ]
                },
                {
                    "content": "NATIONAL",
                    "polygon": [
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                        2.2641,
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                    "spans": [
                        {
                            "offset": 25459,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "MARINE MAMMAL",
                    "polygon": [
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                        2.288,
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                        2.4691,
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                    ],
                    "spans": [
                        {
                            "offset": 25468,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "LABORATORY (NMML)",
                    "polygon": [
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                        2.4834,
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                        2.6788,
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                    ],
                    "spans": [
                        {
                            "offset": 25482,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "Gray Whale Census",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25500,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "The NMML, in cooperation with",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25518,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "the Southwest Fisheries Science",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 25548,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "Center (SWFSC) and the NMFS",
                    "polygon": [
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                    ],
                    "spans": [
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                            "offset": 25580,
                            "length": 27
                        }
                    ]
                },
                {
                    "content": "Southwest Regional Office, initi-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25608,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "ated a study on 7 December 1992",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 25642,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "to census gray whales in the",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25674,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "eastern North Pacific Ocean dur-",
                    "polygon": [
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                        4.1231,
                        7.5264,
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                    ],
                    "spans": [
                        {
                            "offset": 25703,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "ing their southbound migration.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25736,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "The census is being conducted",
                    "polygon": [
                        5.4386,
                        4.452,
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                        4.452,
                        7.5312,
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                    ],
                    "spans": [
                        {
                            "offset": 25768,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "from shore and aerial surveys at",
                    "polygon": [
                        5.4386,
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                        4.6236,
                        7.5407,
                        4.7809,
                        5.4386,
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                    ],
                    "spans": [
                        {
                            "offset": 25798,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "Granite Canyon, California. The",
                    "polygon": [
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                        4.7761,
                        7.5359,
                        4.9334,
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                    ],
                    "spans": [
                        {
                            "offset": 25831,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "shore survey was initiated on 9 De-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25863,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "cember and will continue through",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25899,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "8 February 1993. Four people will",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25932,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "rotate observer duties from two in-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 25966,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "dependent stations, approxi-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 26002,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "mately 25 m above the water. To",
                    "polygon": [
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                    "content": "improve the accuracy of pod-size",
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                    "content": "estimates from shore and to deter-",
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                    "content": "mine the offshore distribution of",
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                },
                {
                    "content": "migrating whales, aerial surveys",
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                    "content": "will be conducted 5-15 January.",
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                    "content": "During the first few days of the",
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                },
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                    "content": "survey, sightings were reported for",
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                },
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                    "content": "gray whales, blue whales, and",
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                {
                    "content": "humpback whales.",
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                    "content": "The last such census of gray",
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                    "content": "whales was conducted in the win-",
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                    "content": "ulation estimate was 21,113",
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                    "content": "(se=688). This population, also",
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                    "content": "known as the California stock of",
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                    "content": "gray whales, was recently delisted",
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                    "content": "from the Endangered Species Act",
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                    "content": "(ESA). This year's work is the first",
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                    "content": "activity under the required ESA",
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                    "content": "monitoring program for delisted",
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                    "content": "species. The results of this survey",
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                    "content": "will lead management to important",
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                    "content": "considerations, such as: Is the",
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                    "content": "AFSC Quarterly Report",
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                        2.5466,
                        3.0795,
                        2.5466,
                        3.2315,
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                        3.2268
                    ],
                    "spans": [
                        {
                            "offset": 27185,
                            "length": 20
                        }
                    ]
                },
                {
                    "content": "An analysis of the trophic dy-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 27206,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "namics and community structure",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 27237,
                            "length": 30
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                    ]
                },
                {
                    "content": "of the fauna of the North Pacific",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 27268,
                            "length": 33
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                    ]
                },
                {
                    "content": "Transition Zone (NPTZ) was initi-",
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                    "spans": [
                        {
                            "offset": 27302,
                            "length": 33
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                    ]
                },
                {
                    "content": "ated with the High-Seas Driftnet",
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                            "offset": 27336,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "Programs at the ABL, the Honolulu",
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                    ]
                },
                {
                    "content": "Laboratory (SWFSC), and MBC",
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                            "offset": 27403,
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                    ]
                },
                {
                    "content": "Applied Environmental Sciences",
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                            "offset": 27431,
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                    ]
                },
                {
                    "content": "of Costa Mesa, California. The",
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                            "offset": 27462,
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                    ]
                },
                {
                    "content": "project will compile and review the",
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                    "spans": [
                        {
                            "offset": 27493,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "available information on species in",
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                            "offset": 27529,
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                    ]
                },
                {
                    "content": "the NPTZ and convene a work-",
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                            "offset": 27565,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "shop to explore approaches to",
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                        1.1073,
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                    "spans": [
                        {
                            "offset": 27594,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "modeling the NPTZ ecosystem.",
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                        {
                            "offset": 27624,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "The preceding information",
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                        5.2689,
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                    "spans": [
                        {
                            "offset": 27653,
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                    ]
                },
                {
                    "content": "was provided by DOUGLAS De",
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                            "offset": 27679,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "MASTER.",
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                        {
                            "offset": 27706,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "RESOURCE",
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                        2.1005,
                        4.2522,
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                        {
                            "offset": 27714,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "ASSESSMENT AND",
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                        2.2953,
                        4.9316,
                        2.4664,
                        3.1927,
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                        {
                            "offset": 27723,
                            "length": 14
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                    ]
                },
                {
                    "content": "CONSERVATION",
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                    ]
                },
                {
                    "content": "ENGINEERING",
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                        2.685,
                        4.58,
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                        3.1975,
                        2.8561
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                            "offset": 27751,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "(RACE) DIVISION",
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                        2.8751,
                        4.8128,
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                        {
                            "offset": 27763,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "Bering Sea Groundfish",
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                        {
                            "offset": 27779,
                            "length": 21
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                    ]
                },
                {
                    "content": "Assessment Subtask",
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                    "spans": [
                        {
                            "offset": 27801,
                            "length": 18
                        }
                    ]
                },
                {
                    "content": "The eastern Bering Sea crab-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 27820,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "groundfish bottom trawl survey",
                    "polygon": [
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                            "offset": 27849,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "has traditionally been conducted",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 27880,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "using a sampling plan based on a",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 27913,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "20 by 20 nautical mile (nmi) grid.",
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                            "length": 34
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                    ]
                },
                {
                    "content": "Trawls are made near the center of",
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                        {
                            "offset": 27981,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "the grid blocks with some addi-",
                    "polygon": [
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                            "offset": 28016,
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                    ]
                },
                {
                    "content": "tional sampling at the corners of",
                    "polygon": [
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                        }
                    ]
                },
                {
                    "content": "the grid near the Pribilof Islands",
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                        {
                            "offset": 28082,
                            "length": 34
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                    ]
                },
                {
                    "content": "and St. Matthew Island (Fig. 1).",
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                    ]
                },
                {
                    "content": "These surveys have been con-",
                    "polygon": [
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                            "offset": 28150,
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                    ]
                },
                {
                    "content": "ducted using at least two vessels.",
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                    ]
                },
                {
                    "content": "Since the early 1980s, the plans",
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                },
                {
                    "content": "called for each vessel to complete",
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                    ]
                },
                {
                    "content": "alternating columns of stations",
                    "polygon": [
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                            "offset": 28282,
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                    ]
                },
                {
                    "content": "while working from inner Bristol",
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                    ]
                },
                {
                    "content": "Bay westward toward the edge of",
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                            "offset": 28347,
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                    ]
                },
                {
                    "content": "the continental shelf. Any differ-",
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                            "offset": 28379,
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                    ]
                },
                {
                    "content": "ences in relative fishing power of",
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                    ]
                },
                {
                    "content": "the vessels has been compen-",
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                            "offset": 28449,
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                    ]
                },
                {
                    "content": "sated for by mathematical analy-",
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                            "offset": 28478,
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                    ]
                },
                {
                    "content": "ses of distributions of catches by",
                    "polygon": [
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                    ]
                },
                {
                    "content": "each vessel.",
                    "polygon": [
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                    "spans": [
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                            "offset": 28546,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "Due to potential budget cuts in",
                    "polygon": [
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                    ]
                },
                {
                    "content": "FY93, the Bering Sea Subtask has",
                    "polygon": [
                        5.4162,
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                    ]
                },
                {
                    "content": "been investigating sampling",
                    "polygon": [
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                            "offset": 28624,
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                        }
                    ]
                },
                {
                    "content": "schemes using only one vessel.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 28652,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "The first part of this work has been",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 28683,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "to estimate the effects of only sam-",
                    "polygon": [
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                        7.5114,
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                    "spans": [
                        {
                            "offset": 28720,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "pling every other column and",
                    "polygon": [
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                        4.2248,
                        7.5114,
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                    "spans": [
                        {
                            "offset": 28757,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "whether odd or even numbered",
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                    "spans": [
                        {
                            "offset": 28786,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "columns show significant differ-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 28815,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "ences (for station identification",
                    "polygon": [
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                    ]
                },
                {
                    "content": "purposes columns are numbered",
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                    "spans": [
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                            "offset": 28882,
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                    ]
                },
                {
                    "content": "and rows are alphabetic). To eval-",
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                },
                {
                    "content": "uate this approach, we used sur-",
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                    "content": "the",
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                    "content": "differ-",
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                    "content": "ences",
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                    "content": "in",
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                {
                    "content": "relative",
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                    "content": "fishing",
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                    }
                },
                {
                    "content": "power.",
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                    "content": "AFSC",
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                    }
                },
                {
                    "content": "Quarterly",
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                },
                {
                    "content": "Report",
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                    "span": {
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                        "length": 6
                    }
                },
                {
                    "content": "9",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
                        "offset": 32195,
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                    }
                },
                {
                    "content": "%",
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                    "confidence": 0.992,
                    "span": {
                        "offset": 32197,
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                    }
                },
                {
                    "content": "DIFFERENCE",
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                    "confidence": 0.992,
                    "span": {
                        "offset": 32199,
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                    }
                },
                {
                    "content": "FROM",
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                    "confidence": 0.992,
                    "span": {
                        "offset": 32210,
                        "length": 4
                    }
                },
                {
                    "content": "TOTAL",
                    "polygon": [
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                    "confidence": 0.995,
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                        "offset": 32215,
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                },
                {
                    "content": "SURVEY",
                    "polygon": [
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                    "confidence": 0.992,
                    "span": {
                        "offset": 32221,
                        "length": 6
                    }
                },
                {
                    "content": "1",
                    "polygon": [
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                    "span": {
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                    }
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            ],
            "lines": [
                {
                    "content": "veys from the annual time series of",
                    "polygon": [
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                    "spans": [
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                            "offset": 29279,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "data beginning in 1982, separated",
                    "polygon": [
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                    ]
                },
                {
                    "content": "the data between odd and even",
                    "polygon": [
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                            "offset": 29349,
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                    ]
                },
                {
                    "content": "numbered columns (without using",
                    "polygon": [
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                    ]
                },
                {
                    "content": "corner stations), and then esti-",
                    "polygon": [
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                    "spans": [
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                            "length": 32
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                    ]
                },
                {
                    "content": "mated biomass for major species",
                    "polygon": [
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                    ]
                },
                {
                    "content": "using each set of data. These re-",
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                            "offset": 29476,
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                    ]
                },
                {
                    "content": "sults were then compared with the",
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                    ]
                },
                {
                    "content": "estimates using the entire data set.",
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                    ]
                },
                {
                    "content": "Since fishing power differences",
                    "polygon": [
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                },
                {
                    "content": "are presently used only between",
                    "polygon": [
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                            "offset": 29613,
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                    ]
                },
                {
                    "content": "vessels in the same survey and not",
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                    ]
                },
                {
                    "content": "between years, no fishing power",
                    "polygon": [
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                    ]
                },
                {
                    "content": "corrections were used in this anal-",
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                            "offset": 29712,
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                    ]
                },
                {
                    "content": "ysis in order to present the worst-",
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                    ]
                },
                {
                    "content": "case scenario of using only one",
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                    ]
                },
                {
                    "content": "vessel.",
                    "polygon": [
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                },
                {
                    "content": "Comparisons for four major",
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                    "spans": [
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                    ]
                },
                {
                    "content": "species are shown in Figures 2 to",
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                },
                {
                    "content": "5. The results for walleye pollock",
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                },
                {
                    "content": "(Theragra chalcogramma) show",
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                    ]
                },
                {
                    "content": "that, although an occasionally high",
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                    ]
                },
                {
                    "content": "deviation may occur, most of the",
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                    "spans": [
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                    ]
                },
                {
                    "content": "differences over the time series are",
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                    "spans": [
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                            "offset": 30018,
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                    ]
                },
                {
                    "content": "less than 15% (Fig. 2). A Student's",
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                    "spans": [
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                            "offset": 30055,
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                    ]
                },
                {
                    "content": "t-test over the length of the time",
                    "polygon": [
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                    "spans": [
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                            "offset": 30091,
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                    ]
                },
                {
                    "content": "series for a mean difference of zero",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 30126,
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                },
                {
                    "content": "was not significant for either even",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 30163,
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                    ]
                },
                {
                    "content": "or odd columns (p=0.612 and",
                    "polygon": [
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                    "spans": [
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                            "offset": 30199,
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                    ]
                },
                {
                    "content": "p=0.785, respectively). The dif-",
                    "polygon": [
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                    "spans": [
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                            "offset": 30227,
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                    ]
                },
                {
                    "content": "ferences for Pacific cod (Gadus",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 30260,
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                    ]
                },
                {
                    "content": "macrocephalus) were all less than",
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                    "spans": [
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                            "offset": 30292,
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                    ]
                },
                {
                    "content": "15% over the entire series (Fig. 3).",
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                    ]
                },
                {
                    "content": "There was no significant difference",
                    "polygon": [
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                    "spans": [
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                            "offset": 30363,
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                    ]
                },
                {
                    "content": "from zero over the time series for",
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                    ]
                },
                {
                    "content": "either even or odd columns",
                    "polygon": [
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                    "spans": [
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                            "offset": 30434,
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                    ]
                },
                {
                    "content": "(p=0.841 and p=0.745, respec-",
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                    "spans": [
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                    ]
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                {
                    "content": "tively). Both walleye pollock and",
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                },
                {
                    "content": "Pacific cod are widely distributed",
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                    ]
                },
                {
                    "content": "across the shelf. Among species",
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                        3.0854,
                        7.5434,
                        3.0854,
                        7.7006,
                        0.9904,
                        7.6958
                    ],
                    "spans": [
                        {
                            "offset": 30560,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "with more limited distributions is",
                    "polygon": [
                        0.9951,
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                        7.7006,
                        3.0854,
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                    "spans": [
                        {
                            "offset": 30592,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "yellowfin sole (Pleuronectes",
                    "polygon": [
                        0.9951,
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                        3.095,
                        7.872,
                        3.095,
                        8.0339,
                        0.9951,
                        8.0292
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                    "spans": [
                        {
                            "offset": 30627,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "asper), which also showed large",
                    "polygon": [
                        0.9761,
                        8.0339,
                        3.1045,
                        8.0387,
                        3.0997,
                        8.2101,
                        0.9761,
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                    ],
                    "spans": [
                        {
                            "offset": 30656,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "differences during part of the time",
                    "polygon": [
                        0.9904,
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                        3.095,
                        8.2101,
                        3.095,
                        8.3673,
                        0.9904,
                        8.3577
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                    "spans": [
                        {
                            "offset": 30688,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "series (Fig. 4) but, over all, no sig-",
                    "polygon": [
                        0.9999,
                        8.3768,
                        3.0854,
                        8.3768,
                        3.0854,
                        8.5387,
                        0.9999,
                        8.5339
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                    "spans": [
                        {
                            "offset": 30724,
                            "length": 38
                        }
                    ]
                },
                {
                    "content": "nificant difference from a mean of",
                    "polygon": [
                        0.9951,
                        8.5387,
                        3.095,
                        8.5387,
                        3.095,
                        8.6959,
                        0.9951,
                        8.6959
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                    "spans": [
                        {
                            "offset": 30763,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "zero (p=0.513 for even columns",
                    "polygon": [
                        0.9904,
                        8.7149,
                        3.095,
                        8.7054,
                        3.0997,
                        8.8673,
                        0.9904,
                        8.8721
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                    "spans": [
                        {
                            "offset": 30798,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "and p=0.512 for odd columns).",
                    "polygon": [
                        0.9951,
                        8.8768,
                        3.0807,
                        8.8768,
                        3.0759,
                        9.0387,
                        0.9951,
                        9.0387
                    ],
                    "spans": [
                        {
                            "offset": 30829,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "Sampling of Alaska plaice",
                    "polygon": [
                        0.9951,
                        9.0435,
                        3.0854,
                        9.0435,
                        3.0854,
                        9.2054,
                        0.9951,
                        9.2007
                    ],
                    "spans": [
                        {
                            "offset": 30859,
                            "length": 25
                        }
                    ]
                },
                {
                    "content": "(P. quadrituberculatus), which has",
                    "polygon": [
                        1.0094,
                        9.2102,
                        3.095,
                        9.2102,
                        3.095,
                        9.3673,
                        1.0094,
                        9.3673
                    ],
                    "spans": [
                        {
                            "offset": 30885,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "a relatively limited distribution, pro-",
                    "polygon": [
                        0.9951,
                        9.3816,
                        3.0902,
                        9.3816,
                        3.0902,
                        9.5388,
                        0.9951,
                        9.534
                    ],
                    "spans": [
                        {
                            "offset": 30920,
                            "length": 39
                        }
                    ]
                },
                {
                    "content": "duced large differences from the",
                    "polygon": [
                        0.9951,
                        9.5435,
                        3.095,
                        9.5435,
                        3.095,
                        9.7055,
                        0.9951,
                        9.7055
                    ],
                    "spans": [
                        {
                            "offset": 30960,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "% DIFFERENCE FROM TOTAL SURVEY",
                    "polygon": [
                        3.2473,
                        3.6288,
                        3.2473,
                        1.0953,
                        3.3854,
                        1.0953,
                        3.3854,
                        3.6288
                    ],
                    "spans": [
                        {
                            "offset": 30993,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "WALLEYE POLLOCK",
                    "polygon": [
                        4.8615,
                        1.1144,
                        6.5756,
                        1.1191,
                        6.5756,
                        1.281,
                        4.8567,
                        1.281
                    ],
                    "spans": [
                        {
                            "offset": 31024,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "40",
                    "polygon": [
                        3.6378,
                        1.3715,
                        3.8377,
                        1.3811,
                        3.833,
                        1.5334,
                        3.633,
                        1.5287
                    ],
                    "spans": [
                        {
                            "offset": 31040,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "EVEN COLUMNS",
                    "polygon": [
                        4.2901,
                        1.4906,
                        5.1424,
                        1.4906,
                        5.1424,
                        1.6096,
                        4.2901,
                        1.6049
                    ],
                    "spans": [
                        {
                            "offset": 31043,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "30",
                    "polygon": [
                        3.652,
                        1.6525,
                        3.8235,
                        1.6525,
                        3.8187,
                        1.7716,
                        3.652,
                        1.7668
                    ],
                    "spans": [
                        {
                            "offset": 31056,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "ODD COLUMNS",
                    "polygon": [
                        4.2996,
                        1.6715,
                        5.0948,
                        1.6668,
                        5.0948,
                        1.7811,
                        4.2996,
                        1.7858
                    ],
                    "spans": [
                        {
                            "offset": 31059,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "20",
                    "polygon": [
                        3.633,
                        1.8906,
                        3.833,
                        1.8906,
                        3.833,
                        2.0478,
                        3.6282,
                        2.0478
                    ],
                    "spans": [
                        {
                            "offset": 31071,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "10",
                    "polygon": [
                        3.6425,
                        2.1621,
                        3.833,
                        2.1668,
                        3.833,
                        2.3145,
                        3.6378,
                        2.3192
                    ],
                    "spans": [
                        {
                            "offset": 31074,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "0",
                    "polygon": [
                        3.733,
                        2.443,
                        3.8187,
                        2.4478,
                        3.8139,
                        2.5526,
                        3.733,
                        2.5478
                    ],
                    "spans": [
                        {
                            "offset": 31077,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "-10",
                    "polygon": [
                        3.5378,
                        2.7145,
                        3.8282,
                        2.7002,
                        3.833,
                        2.8145,
                        3.5378,
                        2.8097
                    ],
                    "spans": [
                        {
                            "offset": 31079,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "////",
                    "polygon": [
                        7.1946,
                        3.0193,
                        7.1946,
                        2.5573,
                        7.2803,
                        2.5573,
                        7.2803,
                        3.0193
                    ],
                    "spans": [
                        {
                            "offset": 31083,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "-20",
                    "polygon": [
                        3.5378,
                        2.9669,
                        3.8473,
                        2.9716,
                        3.8473,
                        3.0812,
                        3.5378,
                        3.0812
                    ],
                    "spans": [
                        {
                            "offset": 31088,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "MEAN EVEN= - 1.95",
                    "polygon": [
                        5.29,
                        2.9716,
                        6.4137,
                        2.9764,
                        6.4137,
                        3.0859,
                        5.29,
                        3.0812
                    ],
                    "spans": [
                        {
                            "offset": 31092,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "MEAN ODD= +1.04",
                    "polygon": [
                        5.3043,
                        3.124,
                        6.3994,
                        3.1383,
                        6.3994,
                        3.2383,
                        5.3043,
                        3.2288
                    ],
                    "spans": [
                        {
                            "offset": 31110,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "-30",
                    "polygon": [
                        3.5663,
                        3.205,
                        3.8282,
                        3.2098,
                        3.8282,
                        3.3574,
                        3.5616,
                        3.3574
                    ],
                    "spans": [
                        {
                            "offset": 31126,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "1981",
                    "polygon": [
                        3.6854,
                        3.6288,
                        3.9092,
                        3.3907,
                        3.9949,
                        3.4764,
                        3.7663,
                        3.705
                    ],
                    "spans": [
                        {
                            "offset": 31130,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1982",
                    "polygon": [
                        3.9663,
                        3.6431,
                        4.2091,
                        3.386,
                        4.2948,
                        3.4717,
                        4.0472,
                        3.7241
                    ],
                    "spans": [
                        {
                            "offset": 31135,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1983",
                    "polygon": [
                        4.2615,
                        3.6384,
                        4.5091,
                        3.3764,
                        4.5948,
                        3.4574,
                        4.3329,
                        3.7193
                    ],
                    "spans": [
                        {
                            "offset": 31140,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1984",
                    "polygon": [
                        4.552,
                        3.6288,
                        4.8043,
                        3.3812,
                        4.89,
                        3.4622,
                        4.6281,
                        3.7146
                    ],
                    "spans": [
                        {
                            "offset": 31145,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1985",
                    "polygon": [
                        4.8472,
                        3.6288,
                        5.0995,
                        3.3907,
                        5.1805,
                        3.4717,
                        4.9186,
                        3.7146
                    ],
                    "spans": [
                        {
                            "offset": 31150,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1986",
                    "polygon": [
                        5.1471,
                        3.6431,
                        5.4043,
                        3.3526,
                        5.4947,
                        3.4288,
                        5.2281,
                        3.7193
                    ],
                    "spans": [
                        {
                            "offset": 31155,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1987",
                    "polygon": [
                        5.4328,
                        3.6431,
                        5.6852,
                        3.386,
                        5.7661,
                        3.4717,
                        5.509,
                        3.7288
                    ],
                    "spans": [
                        {
                            "offset": 31160,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1988",
                    "polygon": [
                        5.7233,
                        3.6431,
                        5.9756,
                        3.3764,
                        6.0709,
                        3.4574,
                        5.8376,
                        3.7336
                    ],
                    "spans": [
                        {
                            "offset": 31165,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1989",
                    "polygon": [
                        6.0232,
                        3.6384,
                        6.2756,
                        3.3955,
                        6.3613,
                        3.4812,
                        6.1042,
                        3.7241
                    ],
                    "spans": [
                        {
                            "offset": 31170,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1990",
                    "polygon": [
                        6.328,
                        3.6336,
                        6.5613,
                        3.386,
                        6.6565,
                        3.4812,
                        6.4089,
                        3.7193
                    ],
                    "spans": [
                        {
                            "offset": 31175,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1991",
                    "polygon": [
                        6.6137,
                        3.6336,
                        6.847,
                        3.405,
                        6.9327,
                        3.4907,
                        6.6899,
                        3.7241
                    ],
                    "spans": [
                        {
                            "offset": 31180,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1992",
                    "polygon": [
                        6.9184,
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                        7.1612,
                        3.3955,
                        7.2422,
                        3.4812,
                        6.9898,
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                    ],
                    "spans": [
                        {
                            "offset": 31185,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1993",
                    "polygon": [
                        7.1946,
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                        7.4422,
                        3.4002,
                        7.5231,
                        3.4812,
                        7.2708,
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                    "spans": [
                        {
                            "offset": 31190,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "YEAR",
                    "polygon": [
                        5.5519,
                        3.9241,
                        5.9042,
                        3.9146,
                        5.9137,
                        4.0479,
                        5.5519,
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                    ],
                    "spans": [
                        {
                            "offset": 31195,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Figure 2. Percentage difference between biomass estimates for walleye pollock",
                    "polygon": [
                        3.1997,
                        4.2098,
                        7.4993,
                        4.2194,
                        7.4993,
                        4.3765,
                        3.1997,
                        4.367
                    ],
                    "spans": [
                        {
                            "offset": 31200,
                            "length": 77
                        }
                    ]
                },
                {
                    "content": "using the total survey data and estimates using odd and even colum samples.",
                    "polygon": [
                        3.214,
                        4.3765,
                        6.8898,
                        4.3765,
                        6.8898,
                        4.5337,
                        3.214,
                        4.5289
                    ],
                    "spans": [
                        {
                            "offset": 31278,
                            "length": 75
                        }
                    ]
                },
                {
                    "content": "PACIFIC COD",
                    "polygon": [
                        5.2567,
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                        4.8623,
                        6.1804,
                        4.9956,
                        5.2567,
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                    "spans": [
                        {
                            "offset": 31354,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "15",
                    "polygon": [
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                        3.6378,
                        5.2575
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                    "spans": [
                        {
                            "offset": 31366,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "EVEN COLUMNS",
                    "polygon": [
                        4.2853,
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                        5.1138,
                        5.2194,
                        5.1138,
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                    "spans": [
                        {
                            "offset": 31369,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "10",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 31382,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "ODD COLUMNS",
                    "polygon": [
                        4.2853,
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                        5.4004,
                        5.071,
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                        4.2853,
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                    "spans": [
                        {
                            "offset": 31385,
                            "length": 11
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                    ]
                },
                {
                    "content": "5",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 31397,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "0",
                    "polygon": [
                        3.733,
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                    "spans": [
                        {
                            "offset": 31399,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "1",
                    "polygon": [
                        6.0328,
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                    "spans": [
                        {
                            "offset": 31401,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "11",
                    "polygon": [
                        7.2279,
                        6.3767,
                        7.2231,
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                    ],
                    "spans": [
                        {
                            "offset": 31403,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "-5",
                    "polygon": [
                        3.6139,
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                        3.8187,
                        6.3576,
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                        3.6092,
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                    ],
                    "spans": [
                        {
                            "offset": 31406,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "-10 -",
                    "polygon": [
                        3.5187,
                        6.6624,
                        3.9282,
                        6.6624,
                        3.9282,
                        6.7767,
                        3.5187,
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                    ],
                    "spans": [
                        {
                            "offset": 31409,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "MEAN EVEN= +1.39",
                    "polygon": [
                        6.0709,
                        6.8005,
                        7.2041,
                        6.8005,
                        7.2041,
                        6.91,
                        6.0709,
                        6.91
                    ],
                    "spans": [
                        {
                            "offset": 31415,
                            "length": 16
                        }
                    ]
                },
                {
                    "content": "MEAN ODD= - 1.36",
                    "polygon": [
                        6.1042,
                        6.9005,
                        7.2041,
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                    "spans": [
                        {
                            "offset": 31432,
                            "length": 16
                        }
                    ]
                },
                {
                    "content": "-15",
                    "polygon": [
                        3.5282,
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                    ],
                    "spans": [
                        {
                            "offset": 31449,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "1981",
                    "polygon": [
                        3.6568,
                        7.3672,
                        3.9044,
                        7.1338,
                        3.9901,
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                    ],
                    "spans": [
                        {
                            "offset": 31453,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1982",
                    "polygon": [
                        3.952,
                        7.372,
                        4.2091,
                        7.1243,
                        4.2853,
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                    ],
                    "spans": [
                        {
                            "offset": 31458,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1983",
                    "polygon": [
                        4.252,
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                    "spans": [
                        {
                            "offset": 31463,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1984",
                    "polygon": [
                        4.5282,
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                    ],
                    "spans": [
                        {
                            "offset": 31468,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1985",
                    "polygon": [
                        4.8186,
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                        5.071,
                        7.1243,
                        5.1662,
                        7.2434,
                        4.9091,
                        7.4815
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                    "spans": [
                        {
                            "offset": 31473,
                            "length": 4
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                    ]
                },
                {
                    "content": "1986",
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                        {
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                            "length": 4
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                    ]
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                {
                    "content": "1987",
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                        7.2053,
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                    "spans": [
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                    ]
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                {
                    "content": "1988",
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                    ]
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                {
                    "content": "1989",
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                {
                    "content": "1990",
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                {
                    "content": "1991",
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                            "length": 4
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                    ]
                },
                {
                    "content": "1992",
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                    ]
                },
                {
                    "content": "1993",
                    "polygon": [
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                },
                {
                    "content": "YEAR",
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                {
                    "content": "Figure 3. Percentage difference between biomass estimatesfor Pacific cod",
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                },
                {
                    "content": "using the total survey data and estimates using odd and even column sam-",
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                {
                    "content": "ples.",
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                {
                    "content": "total survey estimates (Fig. 5). The",
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                {
                    "content": "differences were almost entirely",
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                {
                    "content": "positive for even columns and neg-",
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                {
                    "content": "ative for odd columns. As ex-",
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                {
                    "content": "pected, these results were",
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                },
                {
                    "content": "significantly different from a mean",
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                },
                {
                    "content": "of zero for the years examined",
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                {
                    "content": "(p =. 008 for even columns and",
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                {
                    "content": "p =. 009 for odd columns). This",
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                {
                    "content": "example probably illustrates not",
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                },
                {
                    "content": "only the problems of sampling a",
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                {
                    "content": "fish of limited distribution with de-",
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                    "content": "creased sampling density but also",
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                {
                    "content": "the effects of vessels with differ-",
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                },
                {
                    "content": "ences in relative fishing power.",
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                {
                    "content": "AFSC Quarterly Report",
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                {
                    "content": "% DIFFERENCE FROM TOTAL SURVEY",
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                        1.8921,
                        7.1248,
                        1.9539,
                        7.1866,
                        1.9016,
                        7.2723
                    ],
                    "spans": [
                        {
                            "offset": 32718,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "1981",
                    "polygon": [
                        1.3216,
                        7.491,
                        1.5498,
                        7.2532,
                        1.6258,
                        7.3388,
                        1.4024,
                        7.5719
                    ],
                    "spans": [
                        {
                            "offset": 32720,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1982",
                    "polygon": [
                        1.6021,
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                        1.8635,
                        7.2295,
                        1.9539,
                        7.3151,
                        1.6876,
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                    "spans": [
                        {
                            "offset": 32725,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1983",
                    "polygon": [
                        1.9158,
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                        7.2104,
                        2.2676,
                        7.2865,
                        2.0062,
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                    "spans": [
                        {
                            "offset": 32730,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1984",
                    "polygon": [
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                        7.2437,
                        2.5338,
                        7.3151,
                        2.2914,
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                    "spans": [
                        {
                            "offset": 32735,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1985",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32740,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1986",
                    "polygon": [
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                        7.2865,
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                    "spans": [
                        {
                            "offset": 32745,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1987",
                    "polygon": [
                        3.09,
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                        3.4038,
                        7.3056,
                        3.1709,
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                    "spans": [
                        {
                            "offset": 32750,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1988",
                    "polygon": [
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                        7.3008,
                        3.4656,
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                    "spans": [
                        {
                            "offset": 32755,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1989",
                    "polygon": [
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                        7.2295,
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                    "spans": [
                        {
                            "offset": 32760,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1990",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32765,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1991",
                    "polygon": [
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                        4.3308,
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                    "spans": [
                        {
                            "offset": 32770,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1992",
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                    "spans": [
                        {
                            "offset": 32775,
                            "length": 4
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                    ]
                },
                {
                    "content": "1993",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32780,
                            "length": 4
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                    ]
                },
                {
                    "content": "YEAR",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32785,
                            "length": 4
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                    ]
                },
                {
                    "content": "Figure 5. Percentage difference between biomass estimates for Alaska",
                    "polygon": [
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                        7.9714,
                        4.9346,
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                    "spans": [
                        {
                            "offset": 32790,
                            "length": 68
                        }
                    ]
                },
                {
                    "content": "plaice using the total survey data and estimates using odd and even column",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32859,
                            "length": 74
                        }
                    ]
                },
                {
                    "content": "samples.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 32934,
                            "length": 8
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                    ]
                },
                {
                    "content": "The final plan adopted for the",
                    "polygon": [
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                        8.4994,
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                    "spans": [
                        {
                            "offset": 32943,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "1993 survey will probably be a",
                    "polygon": [
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                        8.6706,
                        3.0568,
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                    "spans": [
                        {
                            "offset": 32974,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "combination of several techniques",
                    "polygon": [
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                        8.8371,
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                    "spans": [
                        {
                            "offset": 33005,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "designed to maximize the perfor-",
                    "polygon": [
                        0.965,
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                        3.052,
                        9.0035,
                        3.052,
                        9.1605,
                        0.965,
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                    "spans": [
                        {
                            "offset": 33039,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "mance of a survey that must con-",
                    "polygon": [
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                        9.1795,
                        3.052,
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                    "spans": [
                        {
                            "offset": 33072,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "sider",
                    "polygon": [
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                        9.3365,
                        1.3881,
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                        0.965,
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                    ],
                    "spans": [
                        {
                            "offset": 33105,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "more",
                    "polygon": [
                        1.4119,
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                        1.9253,
                        9.3365,
                        1.9253,
                        9.4934,
                        1.4119,
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                    ],
                    "spans": [
                        {
                            "offset": 33111,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "species than",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33116,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "accounted for in this analysis. The",
                    "polygon": [
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                        3.0615,
                        9.5077,
                        3.0615,
                        9.6599,
                        0.9698,
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                    ],
                    "spans": [
                        {
                            "offset": 33129,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "survey must also assess two im-",
                    "polygon": [
                        3.1899,
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                        5.2578,
                        8.5041,
                        5.2578,
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                    "spans": [
                        {
                            "offset": 33165,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "portant species of king crabs",
                    "polygon": [
                        3.1899,
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                        5.2626,
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                    "spans": [
                        {
                            "offset": 33197,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "(Paralithodes sp.) and two species",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33227,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "of Tanner crabs (Chionoecetes",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33262,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "sp.).",
                    "polygon": [
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                        9.1843,
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                        9.3269,
                        3.1946,
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                    ],
                    "spans": [
                        {
                            "offset": 33292,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "The preceding information was",
                    "polygon": [
                        3.399,
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                        9.3365,
                        5.2673,
                        9.4934,
                        3.399,
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                    ],
                    "spans": [
                        {
                            "offset": 33298,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "provided by GARY WALTERS.",
                    "polygon": [
                        3.1946,
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                        5.0059,
                        9.5029,
                        5.0059,
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                    "spans": [
                        {
                            "offset": 33328,
                            "length": 25
                        }
                    ]
                },
                {
                    "content": "Yellowfin Sole Maturity",
                    "polygon": [
                        5.4052,
                        1.1225,
                        6.9027,
                        1.1225,
                        6.9027,
                        1.2747,
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                    ],
                    "spans": [
                        {
                            "offset": 33354,
                            "length": 23
                        }
                    ]
                },
                {
                    "content": "A total of 2,103 length-maturity",
                    "polygon": [
                        5.5954,
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                        1.4459,
                        7.4827,
                        1.5981,
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                    ],
                    "spans": [
                        {
                            "offset": 33378,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "observations for yellowfin sole",
                    "polygon": [
                        5.4004,
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                        1.6076,
                        7.4922,
                        1.755,
                        5.4004,
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                    ],
                    "spans": [
                        {
                            "offset": 33411,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "were collected in June during the",
                    "polygon": [
                        5.4004,
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                        1.7741,
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                    ],
                    "spans": [
                        {
                            "offset": 33443,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "1992 eastern Bering Sea bottom",
                    "polygon": [
                        5.41,
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                        1.9358,
                        7.4874,
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                    "spans": [
                        {
                            "offset": 33477,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "trawl survey. A five-point maturity",
                    "polygon": [
                        5.4004,
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                        2.1022,
                        7.4827,
                        2.2544,
                        5.4004,
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                    ],
                    "spans": [
                        {
                            "offset": 33508,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "scale was applied to females, and",
                    "polygon": [
                        5.4004,
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                        2.264,
                        7.4827,
                        2.4114,
                        5.4004,
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                    ],
                    "spans": [
                        {
                            "offset": 33544,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "a four-point maturity scale applied",
                    "polygon": [
                        5.3957,
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                        2.4257,
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                    "spans": [
                        {
                            "offset": 33578,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "to males.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 33614,
                            "length": 9
                        }
                    ]
                },
                {
                    "content": "Sampling occurred during a",
                    "polygon": [
                        5.6001,
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                        2.7539,
                        7.4922,
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                    "spans": [
                        {
                            "offset": 33624,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "time when spawning was likely oc-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33651,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "curring, however, because sam-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 33685,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "pling was conducted outside their",
                    "polygon": [
                        5.4004,
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                        3.2485,
                        7.4922,
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                    ],
                    "spans": [
                        {
                            "offset": 33716,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "nearshore spawning grounds",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33750,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "(Fig. 6), few spawning yellowfin",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33777,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "sole were observed. Subse-",
                    "polygon": [
                        5.3957,
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                        3.7384,
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                    "spans": [
                        {
                            "offset": 33810,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "quently, most mature females were",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 33837,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "found in either a prespawning or",
                    "polygon": [
                        5.3909,
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                        7.4874,
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                    "spans": [
                        {
                            "offset": 33871,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "spent condition.",
                    "polygon": [
                        5.4004,
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                        6.3893,
                        4.3852,
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                    ],
                    "spans": [
                        {
                            "offset": 33904,
                            "length": 16
                        }
                    ]
                },
                {
                    "content": "Equations relating length at",
                    "polygon": [
                        5.5954,
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                        7.4922,
                        4.4043,
                        7.4922,
                        4.5565,
                        5.5954,
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                    ],
                    "spans": [
                        {
                            "offset": 33921,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "sexual maturity are as follows:",
                    "polygon": [
                        5.4004,
                        4.5802,
                        7.2497,
                        4.5755,
                        7.2497,
                        4.7134,
                        5.4004,
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                    ],
                    "spans": [
                        {
                            "offset": 33950,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "PL = 1/(1+ e",
                    "polygon": [
                        5.3957,
                        4.8942,
                        6.3798,
                        4.8894,
                        6.3798,
                        5.0464,
                        5.3957,
                        5.0511
                    ],
                    "spans": [
                        {
                            "offset": 33982,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "-0.5600(L) + 12.4080)",
                    "polygon": [
                        6.4035,
                        4.8513,
                        7.4779,
                        4.8513,
                        7.4779,
                        4.9845,
                        6.4083,
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                    ],
                    "spans": [
                        {
                            "offset": 33995,
                            "length": 21
                        }
                    ]
                },
                {
                    "content": "(males)",
                    "polygon": [
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                        5.0654,
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                    ],
                    "spans": [
                        {
                            "offset": 34017,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "PL = 1/(1+e",
                    "polygon": [
                        5.467,
                        5.384,
                        6.394,
                        5.384,
                        6.394,
                        5.5362,
                        5.467,
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                    "spans": [
                        {
                            "offset": 34025,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "-0.7946(L) +24.4468",
                    "polygon": [
                        6.394,
                        5.3412,
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                        7.4732,
                        5.4744,
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                    "spans": [
                        {
                            "offset": 34037,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "(females)",
                    "polygon": [
                        5.4242,
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                    "spans": [
                        {
                            "offset": 34057,
                            "length": 9
                        }
                    ]
                },
                {
                    "content": "-",
                    "polygon": [
                        7.4114,
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                        7.4066,
                        5.4649,
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                    ]
                },
                {
                    "content": "170",
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                },
                {
                    "content": "165",
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                {
                    "content": "160",
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                    ]
                },
                {
                    "content": "Figure 6. Locations of yellowfin sole maturity collections(dots). Plus symbols indicate trawl locations sampled dur-",
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                {
                    "content": "ing the 1992 eastern Bering Sea bottom trawl survey.",
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                {
                    "content": "-",
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                {
                    "content": "Japan-U.S. Longline Survey",
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                },
                {
                    "content": "Data in RBASE Format",
                    "polygon": [
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                },
                {
                    "content": "Data collected annually from",
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                {
                    "content": "1988 to 1992 in the Gulf of Alaska",
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                {
                    "content": "during the Japan-U.S. cooperative",
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                },
                {
                    "content": "longline survey for sablefish and",
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                    ]
                },
                {
                    "content": "other groundfish species were re-",
                    "polygon": [
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                },
                {
                    "content": "cently compiled and added to a",
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                {
                    "content": "new longline survey database.",
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                {
                    "content": "Currently, data from the 1988-91",
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                {
                    "content": "surveys of the Aleutian Island-",
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                {
                    "content": "Bering Sea region are being organ-",
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                {
                    "content": "ized for inclusion in that database.",
                    "polygon": [
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                {
                    "content": "Cooperative survey data collected",
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                {
                    "content": "during 1992 from the Aleutian",
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                {
                    "content": "Islands-Bering Sea region already",
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                {
                    "content": "reside in the new database. The",
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                    "content": "cooperative longline survey",
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                {
                    "content": "database is similar to that which",
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                    "content": "contains NMFS longline survey",
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                    "content": "data. Previously, cooperative",
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                {
                    "content": "longline survey data were accessi-",
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                {
                    "content": "ble only on data forms, from indi-",
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                {
                    "content": "vidual computer files, or on stor-",
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                {
                    "content": "age tapes accessed through the",
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                    "content": "Burroughs B-7900 mainframe",
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                    "content": "computer. The new database will",
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                {
                    "content": "be temporarily stored on a PC in",
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                    "content": "RBASE format as an intermediate",
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                {
                    "content": "step toward inclusion in a net-",
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                {
                    "content": "worked structured query language",
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                },
                {
                    "content": "(SQL) server environment. Earth",
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                    "content": "Science Data Information Man-",
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                {
                    "content": "agement (ESDIM) funding has",
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                {
                    "content": "been received to mount a modern,",
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                    "content": "powerful, interactive database for",
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                {
                    "content": "the large volume of historical co-",
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                },
                {
                    "content": "operative longline survey data, as",
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                {
                    "content": "well as for the 1987-92 and future",
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                    "content": "collections from the NMFS long-",
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                {
                    "content": "line survey. Extensive editing will",
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                    "content": "be conducted before the data are",
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                    "content": "made public. In its final form, the",
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                    "content": "database will allow researchers to",
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                    "content": "access data from both longline",
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                    "content": "survey databases more easily and",
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                {
                    "content": "much more quickly.",
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                {
                    "content": "The preceding information was",
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                    ]
                },
                {
                    "content": "provided by HAROLD ZENGER.",
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                    "content": "1992 West Coast",
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                    "content": "Continental Slope",
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                    "content": "Bottom Trawl Survey",
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                {
                    "content": "The West Coast survey of con-",
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                {
                    "content": "tinental slope species dates back",
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                    ]
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                {
                    "content": "to 1984, when it was conducted to",
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                    "content": "0",
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                    "spans": [
                        {
                            "offset": 37357,
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                },
                {
                    "content": "0 5",
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                {
                    "content": "10",
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                {
                    "content": "15",
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                    "content": "20",
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                {
                    "content": "25",
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                    "content": "30",
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                {
                    "content": "35",
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                    "content": "40",
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                {
                    "content": "45",
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                {
                    "content": "TOTAL LENGTH (cm)",
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                {
                    "content": "Figure 7. Percentge of mature male (top) and female (bottom) yellowfin",
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                {
                    "content": "sole by length (cm). Curves represent the fitted logistic equation.",
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                            "offset": 37476,
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                },
                {
                    "content": "gather data on the reproductive",
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                {
                    "content": "biology of key species. The suc-",
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                {
                    "content": "cessful completion of those initial",
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                {
                    "content": "cruises led to the expansion of",
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                {
                    "content": "slope species assessments to in-",
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                },
                {
                    "content": "clude areas off California and",
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                },
                {
                    "content": "Washington during fall cruises in",
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                {
                    "content": "1989 through 1992. The most re-",
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                {
                    "content": "cent survey was completed 13",
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                {
                    "content": "November when the NOAA re-",
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                {
                    "content": "search vessel Miller Freeman re-",
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                {
                    "content": "turned from surveying the upper",
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                    "content": "continental slope resources off",
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                },
                {
                    "content": "Washington and northern Oregon.",
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                {
                    "content": "The objectives were to extend the",
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                    "content": "investigation of the distribution",
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                    "content": "and abundance of slope ground-",
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                    "content": "fish resources to the Washington",
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                {
                    "content": "coast, to continue collecting bio-",
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                    "content": "logical data on selected species of",
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                    "content": "commercial importance, and to",
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                },
                {
                    "content": "further describe the community",
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                },
                {
                    "content": "structure and relate it to physical",
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                {
                    "content": "oceanographic factors such as",
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                },
                {
                    "content": "depth, temperature, and salinity.",
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                {
                    "content": "The 1992 survey began 17 Oc-",
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                },
                {
                    "content": "tober near Nitinat Canyon, west of",
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                },
                {
                    "content": "Cape Flattery, Washington (Fig. 8).",
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                },
                {
                    "content": "Sampling progressed from north",
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                },
                {
                    "content": "to south, terminating off northern",
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                    ]
                },
                {
                    "content": "Oregon at lat. 45°30'N. A polyeth-",
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                },
                {
                    "content": "ylene Nor'eastern trawl rigged with",
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                {
                    "content": "a heavy, rubber disk footrope was",
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                {
                    "content": "used to obtain samples from 78",
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                },
                {
                    "content": "bottom trawl stations.",
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                    "content": "Oceano-",
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                {
                    "content": "graphic data were collected at 42",
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                },
                {
                    "content": "of these stations with CTD casts,",
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                    "content": "and temperature profiles were ob-",
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                    "content": "tained with XBTs at an additional 10",
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                {
                    "content": "stations. Stations were laid out",
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                },
                {
                    "content": "along east-west tracklines spaced",
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                    ]
                },
                {
                    "content": "9 nmi apart between the depths of",
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                },
                {
                    "content": "100 and 700 fathoms (fm). Trawl",
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                {
                    "content": "hauls were 30 minutes long at sta-",
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                {
                    "content": "tions shallower than 400 fm and 1",
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                },
                {
                    "content": "hour long at stations deeper than",
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                },
                {
                    "content": "400 fm. Standard data collections",
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                    "content": "strata are shown in Figure 9. As in",
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                        {
                            "offset": 39982,
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                    ]
                },
                {
                    "content": "while longspine thornyheads are",
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                    "content": "more abundant in deeper strata.",
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                    "content": "In contrast to previous surveys",
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                    "content": "when sablefish catches were",
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                    "content": "greatest at middepths, on this oc-",
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                    "content": "casion the highest catch rates for",
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                    "content": "sablefish occurred in the shallow-",
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                {
                    "content": "est stratum. As was expected,",
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                {
                    "content": "arrowtooth flounder catch rates",
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                    "content": "were higher in this region than in",
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                {
                    "content": "more southern areas near the",
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                    "content": "southern extent of the species'",
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                },
                {
                    "content": "range.",
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                    "content": "Cooperating scientists from the",
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                    "content": "Center's Resource Ecology and",
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                    "content": "Fisheries Management (REFM) Di-",
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                    "content": "vision and the Oregon Department",
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                    "content": "of Fish and Wildlife also partici-",
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                {
                    "content": "pated in the study. Further, Sub-",
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                    "content": "task scientists collected data and",
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                    "content": "specimens for the University of",
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                    "content": "Washington for domoic acid stud-",
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                    "content": "ies, Moss Landing Marine Labs for",
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                    "content": "feeding and age and growth stud-",
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                    "content": "ies of eelpouts and Pacific grena-",
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                    "content": "diers, the REFM Division for",
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                    "content": "reproductive biology studies of",
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                    "content": "rougheye and shortraker rockfish,",
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                    "content": "and the Washington Department",
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                    "content": "of Fisheries for maturity studies",
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                    "content": "and gonadal-somatic indexing of",
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                {
                    "content": "arrowtooth flounder.",
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                    "content": "The preceding information was",
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                },
                {
                    "content": "provided by MARK WILKINS.",
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                    "content": "Shellfish Assessment (Kodiak)",
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                    "content": "The Bristol Bay red king crab",
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                    "content": "fishery began on 1 November and",
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                    "content": "closed 7 November with landings",
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                {
                    "content": "of 8.1 million pounds (Alaska De-",
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                    "content": "partment of Fish and Game prelim-",
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                    "content": "inary data). Landings were",
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                    "content": "somewhat below the 10.3 million",
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                    "content": "pound preseason guideline based",
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                {
                    "content": "on the 1992 eastern Bering Sea",
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                    "content": "trawl survey. The fishery was val-",
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                    "content": "ued at $40.5 million, as compared",
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                },
                {
                    "content": "126 00W",
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                },
                {
                    "content": "125 00W",
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                    "content": "124 00W",
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                {
                    "content": "Nitinat Canyon!",
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                {
                    "content": "Juan de Fuca Canyon",
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                {
                    "content": "100 fm",
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                    "content": "500 fm",
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                },
                {
                    "content": "48 00N",
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                },
                {
                    "content": "×",
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                    ]
                },
                {
                    "content": "+",
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                    "content": "+",
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                    "content": "+",
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                    "content": "+",
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                    "content": "+",
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                    "content": ". Quinault Canyon",
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                            "offset": 41551,
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                    ]
                },
                {
                    "content": "47 0ON",
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                {
                    "content": "Gray's Canyon",
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                },
                {
                    "content": "47 OON",
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                {
                    "content": "Astoria Canyon",
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                },
                {
                    "content": "46 0ON",
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                },
                {
                    "content": "46 00N",
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                {
                    "content": "OREGON",
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                            "offset": 41626,
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                    ]
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                {
                    "content": "+",
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                    ]
                },
                {
                    "content": "126 00W",
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                            "offset": 41635,
                            "length": 7
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                    ]
                },
                {
                    "content": "125 00W",
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                        5.399,
                        6.7376,
                        5.399,
                        6.8425,
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                        {
                            "offset": 41643,
                            "length": 7
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                    ]
                },
                {
                    "content": "124 00W",
                    "polygon": [
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                        6.7376,
                        6.558,
                        6.7328,
                        6.558,
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                        6.081,
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                    ]
                },
                {
                    "content": "Figure 8. Stations sampled during Miller Freeman cruise 92-10.",
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                        6.806,
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                            "offset": 41659,
                            "length": 62
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                    ]
                },
                {
                    "content": "to $51.2 million in 1991. A record",
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                        5.3179,
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                    "spans": [
                        {
                            "offset": 41722,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "number of 281 vessels participated",
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                        7.5673,
                        5.3275,
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                        3.2385,
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                    "spans": [
                        {
                            "offset": 41757,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "in the fishery, considerably ex-",
                    "polygon": [
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                        5.3275,
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                            "offset": 41792,
                            "length": 32
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                    ]
                },
                {
                    "content": "ceeding the previous record of 240",
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                        7.9106,
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                        {
                            "offset": 41825,
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                    ]
                },
                {
                    "content": "vessels set in 1991. The Pribilof",
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                            "offset": 41860,
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                    ]
                },
                {
                    "content": "Islands blue king crab fishery re-",
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                            "offset": 41894,
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                    ]
                },
                {
                    "content": "mained closed due to low stock",
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                    ]
                },
                {
                    "content": "abundance, which was again indi-",
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                    ]
                },
                {
                    "content": "cated by the survey. There has not",
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                            "offset": 41993,
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                    ]
                },
                {
                    "content": "been a king crab fishery in the Prib-",
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                            "offset": 42028,
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                    ]
                },
                {
                    "content": "ilof Islands since fall 1987. The St.",
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                    ]
                },
                {
                    "content": "Matthew Island blue king crab fish-",
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                            "offset": 42104,
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                    ]
                },
                {
                    "content": "ery opened 4 September for 72",
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                },
                {
                    "content": "hours. Landings were 2.4 million",
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                    ]
                },
                {
                    "content": "pounds valued at $7.4 million, as",
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                    ]
                },
                {
                    "content": "compared to 3.4 million pounds",
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                    ]
                },
                {
                    "content": "and $9.0 million in 1991. Landings",
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                    ]
                },
                {
                    "content": "were below preseason guidelines",
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                        {
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                    ]
                },
                {
                    "content": "of 3.3 million pounds and a record",
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                        5.461,
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                    "spans": [
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                            "offset": 42335,
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                    ]
                },
                {
                    "content": "174 vessels participated in the fish-",
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                        8.2348,
                        7.5643,
                        8.4017,
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                            "length": 37
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                    ]
                },
                {
                    "content": "ery. The Tanner crab (C. bairdi)",
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                    ]
                },
                {
                    "content": "fishery is in progress with landings",
                    "polygon": [
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                        7.5691,
                        8.7355,
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                        {
                            "offset": 42441,
                            "length": 36
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                    ]
                },
                {
                    "content": "of 23.5 million pounds, as com-",
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                        8.7498,
                        7.5643,
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                    ]
                },
                {
                    "content": "pared to 19.7 million at this time",
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                    ]
                },
                {
                    "content": "last year. The guideline harvest",
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                    ]
                },
                {
                    "content": "level for this fishery is 39.2 million",
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                        7.5691,
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                        9.403
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                            "length": 38
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                    ]
                },
                {
                    "content": "pounds. The snow crab (C. opilio)",
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                },
                {
                    "content": "fishery has a guideline harvest",
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                        7.5787,
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                    ]
                },
                {
                    "content": "AFSC Quarterly Report",
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                        10.0468,
                        2.4563,
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                        0.992,
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                    ]
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                {
                    "content": "13",
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                {
                    "content": "Cape Flattery",
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                {
                    "content": "48 00N",
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                {
                    "content": "WASHINGTON",
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                            "offset": 42907,
                            "length": 5
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                    ]
                },
                {
                    "content": "1,280",
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                    "spans": [
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                    ]
                },
                {
                    "content": "S1",
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                    "spans": [
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                            "offset": 42919,
                            "length": 2
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                    ]
                },
                {
                    "content": "S2",
                    "polygon": [
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                            "offset": 42922,
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                    ]
                },
                {
                    "content": "S3",
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                            "offset": 42925,
                            "length": 2
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                    ]
                },
                {
                    "content": "S4",
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                    ]
                },
                {
                    "content": "S5",
                    "polygon": [
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                            "offset": 42931,
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                    ]
                },
                {
                    "content": "S6",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Depth stratum (m)",
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                            "offset": 42937,
                            "length": 17
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                    ]
                },
                {
                    "content": "Figure 9. Mean CPUE (catch per unit of effort) (kg/km trawled) of the major slope groundfish species during the",
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                    "spans": [
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                            "offset": 42955,
                            "length": 111
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                    ]
                },
                {
                    "content": "1992 continental slope bottom trawl survey off Washington and northern Oregon.",
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                    "spans": [
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                            "offset": 43067,
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                    ]
                },
                {
                    "content": "level of 207 million pounds and is dence with adequate food sup-",
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                            "offset": 43146,
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                    ]
                },
                {
                    "content": "scheduled to open 15 January.",
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                        {
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                    ]
                },
                {
                    "content": "The preceding information was",
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                    "spans": [
                        {
                            "offset": 43241,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "provided by ROBERT OTTO.",
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                            "offset": 43271,
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                    ]
                },
                {
                    "content": "Recruitment Processes Fisheries-",
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                    "spans": [
                        {
                            "offset": 43296,
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                    ]
                },
                {
                    "content": "Oceanography Coordinated",
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                    "spans": [
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                            "offset": 43329,
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                    ]
                },
                {
                    "content": "Investigations (FOC!) Task",
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                    ]
                },
                {
                    "content": "Members of FOCI have been",
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                            "offset": 43381,
                            "length": 25
                        }
                    ]
                },
                {
                    "content": "investigating the vertical distribu-",
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                    "spans": [
                        {
                            "offset": 43407,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "tion of walleye pollock eggs and",
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                            "offset": 43444,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "larvae in Shelikof Strait, Gulf of",
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                        {
                            "offset": 43477,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "Alaska, using data from 36 MOC-",
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                    ]
                },
                {
                    "content": "NESS (Multiple Opening and Clos-",
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                    ]
                },
                {
                    "content": "ing Net and Environmental",
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                    ]
                },
                {
                    "content": "Sensing System) tows taken in",
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                    ]
                },
                {
                    "content": "April and May aboard the NOAA",
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                    ]
                },
                {
                    "content": "ship Miller Freeman in 1986-88.",
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                    ]
                },
                {
                    "content": "Understanding the vertical distri-",
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                    ]
                },
                {
                    "content": "bution of the eggs and larvae will",
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                    ]
                },
                {
                    "content": "help us as we investigate factors",
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                        }
                    ]
                },
                {
                    "content": "relating to their survival, such as",
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                    ]
                },
                {
                    "content": "drift with the currents and coinci-",
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                    ]
                },
                {
                    "content": "plies.",
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                    ]
                },
                {
                    "content": "Most eggs were found from",
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                    ]
                },
                {
                    "content": "below 150 m to near bottom at",
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                    ]
                },
                {
                    "content": "depths to 300 m. Complex pat-",
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                        }
                    ]
                },
                {
                    "content": "terns of differences in depths of",
                    "polygon": [
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                    ]
                },
                {
                    "content": "eggs during development were",
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                    ]
                },
                {
                    "content": "noted. The egg vertical distribu-",
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                    ]
                },
                {
                    "content": "tion did not seem to vary in relation",
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                        }
                    ]
                },
                {
                    "content": "to observed differences in density",
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                    ]
                },
                {
                    "content": "of the ambient water. Larvae hatch",
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                    ]
                },
                {
                    "content": "while the eggs are at depth, but",
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                    ]
                },
                {
                    "content": "quickly rise to the upper 50 m of",
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                    ]
                },
                {
                    "content": "the water column where they re-",
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                    ]
                },
                {
                    "content": "main during larval development.",
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                    ]
                },
                {
                    "content": "Larger larvae (7-10 mm SL) un-",
                    "polygon": [
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                    ]
                },
                {
                    "content": "dergo limited diel vertical migra-",
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                    ]
                },
                {
                    "content": "tion within the upper 50 m. They",
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                    ]
                },
                {
                    "content": "are deepest during the day, shal-",
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                    ]
                },
                {
                    "content": "lowest at dusk, slightly deeper at",
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                    ]
                },
                {
                    "content": "night, and even deeper at dawn.",
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                    ]
                },
                {
                    "content": "Their mean depths of occurrence",
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                    ]
                },
                {
                    "content": "were between 21 and 37 m at all",
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                },
                {
                    "content": "times. At these depths, prey abun-",
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                    ]
                },
                {
                    "content": "dances (copepod nauplii) gener-",
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                },
                {
                    "content": "ally were sufficient for larval pol-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "lock growth.",
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                    ]
                },
                {
                    "content": "Pronounced",
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                            "length": 10
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                    ]
                },
                {
                    "content": "thermoclines and pycnoclines",
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                    "content": "1. NPFMC Bering Sea-",
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                    "content": "Aleutian Island (BS-AI) Amend-",
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                {
                    "content": "ment 24 Gear and/or Seasonal",
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                    "content": "Allocations of Pacific Cod - An",
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                    "content": "industry review draft was prepared",
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                    "content": "describing the revisions that are",
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                    "content": "planned for the environmental as-",
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                    "content": "sessment-regulatory impact re-",
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                    "content": "view (EA-RIR) for Amendment 24.",
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                    "content": "The revised EA-RIR will be re-",
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                    "content": "viewed by the Council in April; final",
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                    "content": "action by the Council is scheduled",
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                {
                    "content": "for June 1993.",
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                    "content": "2. NPFMC BS-AI Amendment",
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                    "content": "25 Allocating PSC Allowances to",
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                    "content": "the Three Pollock Allocation Fish-",
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                    "content": "eries - Task members revised a",
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                    "content": "draft EA-RIR that evaluated the",
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                    "content": "merits of establishing an explicit",
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                    "content": "allocation of the BS-Al prohibited",
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                    "content": "species catch (PSC) allowances",
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                    "content": "among the onshore processing,",
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                    "content": "at-sea processing, and community",
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                    "content": "development quota walleye pol-",
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                    "content": "lock fisheries. (Amendment 18",
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                    "content": "and Revised Amendment 18 es-",
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                    "content": "tablished these three pollock allo-",
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                    "content": "cation fisheries but did not address",
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                    "content": "PSC allowances for them.) The",
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                    "content": "Council recommended that 7.5%",
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                    "content": "of each pollock-fishery PSC allow-",
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                    "content": "ance be split among the commu-",
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                    "content": "nity development quota recipients",
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                    "content": "on the basis of their pollock alloca-",
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                    "content": "tions. If approved by the Secretary",
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                    "content": "of Commerce, this could be a pilot",
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                    "content": "program for individual bycatch",
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                    "content": "quotas.",
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                    "content": "3. NPFMC BS-AI Revised",
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                    "content": "Amendment 18 Inshore/Offshore",
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                    "content": "Pollock Allocation off Alaska -",
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                    "content": "Task members assisted in re-",
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                    "content": "sponding to public comments on",
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                    "content": "this amendment and provided a",
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                    "content": "detailed technical review of the",
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                    "content": "final supplemental EIS-RIR. The",
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                    "content": "revised amendment, partially ap-",
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                    "content": "proved by the Secretary of Com-",
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                    "content": "merce, will result in the following",
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                    "content": "lock total allowable catch (TACs)",
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                    "content": "for 1993-95: community develop-",
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                    "content": "ment quota fishery 7.5%, onshore",
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                    "content": "processing fishery 32.375%, and",
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                    "content": "fish Individual Transferable Quota",
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                    "content": "(ITQ) Amendments - Task mem-",
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                    "content": "bers assisted Alaska Region and",
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                    "content": "NPFMC staffs in preparing regula-",
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                    "content": "tions for the halibut and sablefish",
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                    "content": "ITQ programs recommended by",
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                    "content": "being reviewed by the Secretary of",
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                    "content": "Commerce, and a final decision is",
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                    "content": "expected by the Secretary by 19",
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                    "content": "January. If the amendments are",
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                    "content": "of the 1995 halibut and sablefish",
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                    "content": "fixed-gear fisheries and would be",
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                    "content": "U.S. exclusive economic zone.",
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                    "content": "analysis of options for initial alloca-",
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                    "content": "Scientific Statistical Committee,",
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                    "content": "the Advisory Panel, and the council",
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                    "content": "in November.",
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                    "content": "Limitation Amendment - An anal-",
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                    "content": "ysis of alternative capacity repre-",
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                    "content": "Northwest Region.",
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                    "content": "bers reviewed Saltonstall-Kennedy",
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                    "content": "and Sea Grant research propos-",
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                    "content": "als, Alaska Sea Grant papers, and",
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                    "content": "posal for the Oregon State Univer-",
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                    "content": "Station.",
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                    "content": "The preceding information was",
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                    "content": "provided by JOE TERRY.",
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                    "content": "King and Tanner",
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                    "content": "Crab Research",
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                    "content": "Forecasts of crab catches were",
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                    "content": "developed from analyses of the",
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                    "content": "1992 Bering Sea crab survey data",
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                    "content": "for king, Tanner (C. bairdi), and",
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                    "content": "snow (C. opilio) crab stocks for",
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                    "content": "1993-96. Based on prerecruit",
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                    "content": "abundance estimates from the",
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                    "content": "from the Bristol Bay stock are ex-",
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                    "content": "pected to remain in the 5-15 million",
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                    "content": "pound range for the 1993-95 sea-",
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                    "content": "sons. Catches of Bering Sea C.",
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                    "content": "bairdi should remain at the 35-45",
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                    "content": "million pound level for 1993 and",
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                    "content": "1994, then decrease to the 15-25",
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                    "content": "million pound level in 1995.",
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                    "content": "habits",
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                    "content": "total",
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                    "content": "consumption",
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                },
                {
                    "content": "of",
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                {
                    "content": "Bering",
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                    "content": "16",
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                },
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                    "content": "October-November-December",
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                    "content": "1992",
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                    "content": "Catches of C. opilio are expected",
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                    "content": "to decrease to the 100-150 million",
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                    "content": "sons and then increase to the 200-",
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                    "content": "was provided by JERRY REEVES.",
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                    "content": "for the NPFMC",
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                    "content": "Members of the Status of",
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                    "content": "and BS-Al Plan Team meetings,",
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                    "content": "which were held at the Center in",
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                    "content": "under the groundfish fishery man-",
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                },
                {
                    "content": "and other information to determine",
                    "polygon": [
                        0.9508,
                        7.2342,
                        3.0568,
                        7.239,
                        3.0568,
                        7.3864,
                        0.9508,
                        7.3864
                    ],
                    "spans": [
                        {
                            "offset": 50952,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "final ABCs and TACs (see Tables 1",
                    "polygon": [
                        0.9555,
                        7.4007,
                        3.0378,
                        7.4007,
                        3.0378,
                        7.5576,
                        0.9555,
                        7.5529
                    ],
                    "spans": [
                        {
                            "offset": 50987,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "and 2) for the groundfish fisheries",
                    "polygon": [
                        0.9603,
                        7.5719,
                        3.052,
                        7.5719,
                        3.052,
                        7.7241,
                        0.9603,
                        7.7289
                    ],
                    "spans": [
                        {
                            "offset": 51021,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "in the GOA and BS-Al regions.",
                    "polygon": [
                        0.965,
                        7.7336,
                        2.8286,
                        7.7384,
                        2.8286,
                        7.8858,
                        0.965,
                        7.8811
                    ],
                    "spans": [
                        {
                            "offset": 51057,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "A summary of the major",
                    "polygon": [
                        1.16,
                        7.9048,
                        3.0615,
                        7.9048,
                        3.0615,
                        8.057,
                        1.16,
                        8.0618
                    ],
                    "spans": [
                        {
                            "offset": 51087,
                            "length": 22
                        }
                    ]
                },
                {
                    "content": "changes in the final ABCs between",
                    "polygon": [
                        0.965,
                        8.0761,
                        3.052,
                        8.0713,
                        3.0568,
                        8.214,
                        0.965,
                        8.2283
                    ],
                    "spans": [
                        {
                            "offset": 51110,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "1992 and 1993 in the GOA region",
                    "polygon": [
                        0.9746,
                        8.233,
                        3.0568,
                        8.233,
                        3.0568,
                        8.3995,
                        0.9746,
                        8.3947
                    ],
                    "spans": [
                        {
                            "offset": 51144,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "is as follows (Table 1). The ABC for",
                    "polygon": [
                        0.9603,
                        8.409,
                        3.0615,
                        8.409,
                        3.0615,
                        8.5612,
                        0.9603,
                        8.5612
                    ],
                    "spans": [
                        {
                            "offset": 51176,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "walleye pollock increased from",
                    "polygon": [
                        0.9603,
                        8.5802,
                        3.0568,
                        8.5755,
                        3.0568,
                        8.7229,
                        0.9603,
                        8.7324
                    ],
                    "spans": [
                        {
                            "offset": 51213,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "99,400 t to 160,400 t (an increase",
                    "polygon": [
                        0.9603,
                        8.7419,
                        3.0615,
                        8.7419,
                        3.0615,
                        8.8941,
                        0.9603,
                        8.8941
                    ],
                    "spans": [
                        {
                            "offset": 51244,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "of 61%), due primarily to a new",
                    "polygon": [
                        0.9698,
                        8.9084,
                        3.0805,
                        8.9084,
                        3.0805,
                        9.0654,
                        0.9698,
                        9.0654
                    ],
                    "spans": [
                        {
                            "offset": 51279,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "analysis indicating that the previ-",
                    "polygon": [
                        3.1709,
                        1.1225,
                        5.2483,
                        1.1225,
                        5.2483,
                        1.2699,
                        3.1709,
                        1.2794
                    ],
                    "spans": [
                        {
                            "offset": 51311,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "ous exploitation rate was too con-",
                    "polygon": [
                        3.1709,
                        1.2984,
                        5.2436,
                        1.2937,
                        5.2436,
                        1.4316,
                        3.1709,
                        1.4411
                    ],
                    "spans": [
                        {
                            "offset": 51347,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "servative. The ABC for slope",
                    "polygon": [
                        3.1709,
                        1.4554,
                        5.2483,
                        1.4506,
                        5.2483,
                        1.6028,
                        3.1709,
                        1.6076
                    ],
                    "spans": [
                        {
                            "offset": 51382,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "rockfish was split into two compo-",
                    "polygon": [
                        3.1756,
                        1.6171,
                        5.2483,
                        1.6171,
                        5.2483,
                        1.7646,
                        3.1756,
                        1.7693
                    ],
                    "spans": [
                        {
                            "offset": 51411,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "nents, one for northern rockfish",
                    "polygon": [
                        3.1709,
                        1.7883,
                        5.2483,
                        1.7741,
                        5.2531,
                        1.9215,
                        3.1709,
                        1.9358
                    ],
                    "spans": [
                        {
                            "offset": 51446,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "(1993 ABC = 5,670 t) and one for",
                    "polygon": [
                        3.1804,
                        1.9453,
                        5.2578,
                        1.9453,
                        5.2578,
                        2.0975,
                        3.1804,
                        2.0975
                    ],
                    "spans": [
                        {
                            "offset": 51479,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "the remainder of the complex",
                    "polygon": [
                        3.1661,
                        2.1118,
                        5.2578,
                        2.1118,
                        5.2578,
                        2.2592,
                        3.1661,
                        2.2592
                    ],
                    "spans": [
                        {
                            "offset": 51512,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "(1993 ABC = 8,300 t). The split",
                    "polygon": [
                        3.1709,
                        2.2735,
                        5.2531,
                        2.2687,
                        5.2531,
                        2.4304,
                        3.1709,
                        2.4352
                    ],
                    "spans": [
                        {
                            "offset": 51541,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "was implemented in order to pro-",
                    "polygon": [
                        3.1661,
                        2.4447,
                        5.2578,
                        2.4399,
                        5.2578,
                        2.5921,
                        3.1661,
                        2.5969
                    ],
                    "spans": [
                        {
                            "offset": 51573,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "vide additional protection for",
                    "polygon": [
                        3.1709,
                        2.6064,
                        5.2578,
                        2.6017,
                        5.2578,
                        2.7539,
                        3.1709,
                        2.7586
                    ],
                    "spans": [
                        {
                            "offset": 51606,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "northern rockfish. The ABC for",
                    "polygon": [
                        3.1709,
                        2.7729,
                        5.2578,
                        2.7586,
                        5.2578,
                        2.9108,
                        3.1709,
                        2.9203
                    ],
                    "spans": [
                        {
                            "offset": 51637,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "thornyhead rockfish decreased",
                    "polygon": [
                        3.1709,
                        2.9441,
                        5.2483,
                        2.9346,
                        5.2483,
                        3.0773,
                        3.1709,
                        3.0915
                    ],
                    "spans": [
                        {
                            "offset": 51668,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "from 1,798 t to 1,180 t (a decrease",
                    "polygon": [
                        3.1756,
                        3.1058,
                        5.2578,
                        3.1011,
                        5.2578,
                        3.2437,
                        3.1756,
                        3.2485
                    ],
                    "spans": [
                        {
                            "offset": 51698,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "of 34%), due primarily to a change",
                    "polygon": [
                        3.1804,
                        3.2675,
                        5.2578,
                        3.2628,
                        5.2578,
                        3.4197,
                        3.1804,
                        3.4197
                    ],
                    "spans": [
                        {
                            "offset": 51734,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "in the estimate of the natural mor-",
                    "polygon": [
                        3.1709,
                        3.434,
                        5.2578,
                        3.4292,
                        5.2578,
                        3.5719,
                        3.1709,
                        3.5767
                    ],
                    "spans": [
                        {
                            "offset": 51769,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "tality rate.",
                    "polygon": [
                        3.1709,
                        3.6005,
                        3.7841,
                        3.6005,
                        3.7841,
                        3.7431,
                        3.1709,
                        3.7431
                    ],
                    "spans": [
                        {
                            "offset": 51805,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "A summary of the major",
                    "polygon": [
                        3.3705,
                        3.7574,
                        5.2626,
                        3.7527,
                        5.2626,
                        3.9144,
                        3.3705,
                        3.9191
                    ],
                    "spans": [
                        {
                            "offset": 51818,
                            "length": 22
                        }
                    ]
                },
                {
                    "content": "changes in the final ABCs between",
                    "polygon": [
                        3.1756,
                        3.9286,
                        5.2531,
                        3.9239,
                        5.2578,
                        4.0618,
                        3.1756,
                        4.0761
                    ],
                    "spans": [
                        {
                            "offset": 51841,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "1992 and 1993 in the BS-Al region",
                    "polygon": [
                        3.1899,
                        4.0856,
                        5.2578,
                        4.0856,
                        5.2578,
                        4.2378,
                        3.1899,
                        4.2378
                    ],
                    "spans": [
                        {
                            "offset": 51875,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "is as follows (Table 2). The ABC for",
                    "polygon": [
                        3.1804,
                        4.2568,
                        5.2626,
                        4.2473,
                        5.2626,
                        4.3947,
                        3.1804,
                        4.4043
                    ],
                    "spans": [
                        {
                            "offset": 51909,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "walleye pollock decreased from",
                    "polygon": [
                        3.1804,
                        4.4233,
                        5.2578,
                        4.4138,
                        5.2578,
                        4.5565,
                        3.1804,
                        4.5707
                    ],
                    "spans": [
                        {
                            "offset": 51946,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "1,646,600 t to 1,440,700 t (a de-",
                    "polygon": [
                        3.1899,
                        4.585,
                        5.2626,
                        4.5755,
                        5.2626,
                        4.7277,
                        3.1899,
                        4.7372
                    ],
                    "spans": [
                        {
                            "offset": 51977,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "crease of 13%), due primarily to a",
                    "polygon": [
                        3.1851,
                        4.7467,
                        5.2768,
                        4.742,
                        5.2768,
                        4.8989,
                        3.1851,
                        4.9037
                    ],
                    "spans": [
                        {
                            "offset": 52011,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "decrease in abundance indicated",
                    "polygon": [
                        3.1804,
                        4.9132,
                        5.2531,
                        4.9037,
                        5.2578,
                        5.0559,
                        3.1804,
                        5.0654
                    ],
                    "spans": [
                        {
                            "offset": 52046,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "by trawl surveys. The ABC for Pa-",
                    "polygon": [
                        3.1756,
                        5.0844,
                        5.2578,
                        5.0654,
                        5.2626,
                        5.2176,
                        3.1756,
                        5.2366
                    ],
                    "spans": [
                        {
                            "offset": 52078,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "cific cod decreased from 182,000 t",
                    "polygon": [
                        3.1804,
                        5.2461,
                        5.2721,
                        5.2366,
                        5.2721,
                        5.384,
                        3.1804,
                        5.3936
                    ],
                    "spans": [
                        {
                            "offset": 52112,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "to 164,500 t (a decrease of 10%),",
                    "polygon": [
                        3.1709,
                        5.4078,
                        5.2531,
                        5.4031,
                        5.2531,
                        5.5553,
                        3.1709,
                        5.5648
                    ],
                    "spans": [
                        {
                            "offset": 52147,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "again primarily due to a decrease",
                    "polygon": [
                        3.1804,
                        5.579,
                        5.2768,
                        5.5743,
                        5.2768,
                        5.7265,
                        3.1804,
                        5.736
                    ],
                    "spans": [
                        {
                            "offset": 52181,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "in abundance indicated by trawl",
                    "polygon": [
                        3.1851,
                        5.7408,
                        5.2626,
                        5.736,
                        5.2626,
                        5.8882,
                        3.1851,
                        5.893
                    ],
                    "spans": [
                        {
                            "offset": 52215,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "surveys. The ABCs for yellowfin",
                    "polygon": [
                        3.1899,
                        5.9072,
                        5.2721,
                        5.9025,
                        5.2721,
                        6.0547,
                        3.1899,
                        6.0642
                    ],
                    "spans": [
                        {
                            "offset": 52247,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "sole, arrowtooth flounder, and",
                    "polygon": [
                        3.1851,
                        6.0785,
                        5.2721,
                        6.0689,
                        5.2721,
                        6.2164,
                        3.1851,
                        6.2306
                    ],
                    "spans": [
                        {
                            "offset": 52279,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "rock sole all decreased substan-",
                    "polygon": [
                        3.1899,
                        6.2449,
                        5.2626,
                        6.2449,
                        5.2626,
                        6.3828,
                        3.1899,
                        6.3876
                    ],
                    "spans": [
                        {
                            "offset": 52310,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "tially in response to a change in",
                    "polygon": [
                        3.1804,
                        6.4066,
                        5.2673,
                        6.4019,
                        5.2673,
                        6.5541,
                        3.1851,
                        6.5636
                    ],
                    "spans": [
                        {
                            "offset": 52343,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "exploitation strategy.",
                    "polygon": [
                        3.1851,
                        6.5826,
                        4.8015,
                        6.5779,
                        4.8015,
                        6.7301,
                        3.1851,
                        6.7301
                    ],
                    "spans": [
                        {
                            "offset": 52377,
                            "length": 22
                        }
                    ]
                },
                {
                    "content": "The",
                    "polygon": [
                        4.9441,
                        6.5588,
                        5.2578,
                        6.5636,
                        5.2531,
                        6.7205,
                        4.9441,
                        6.7205
                    ],
                    "spans": [
                        {
                            "offset": 52400,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "yellowfin sole ABC decreased",
                    "polygon": [
                        3.1804,
                        6.7443,
                        5.2626,
                        6.7348,
                        5.2626,
                        6.8823,
                        3.1804,
                        6.8965
                    ],
                    "spans": [
                        {
                            "offset": 52404,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "from 372,000 t to 238,000 t (a de-",
                    "polygon": [
                        3.1804,
                        6.9013,
                        5.2626,
                        6.9013,
                        5.2626,
                        7.0582,
                        3.1804,
                        7.0582
                    ],
                    "spans": [
                        {
                            "offset": 52433,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "crease of 36%), the arrowtooth",
                    "polygon": [
                        3.1899,
                        7.0773,
                        5.2721,
                        7.0677,
                        5.2721,
                        7.2199,
                        3.1899,
                        7.2247
                    ],
                    "spans": [
                        {
                            "offset": 52468,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "flounder ABC decreased from",
                    "polygon": [
                        3.1851,
                        7.2342,
                        5.2768,
                        7.2342,
                        5.2768,
                        7.3864,
                        3.1851,
                        7.3864
                    ],
                    "spans": [
                        {
                            "offset": 52499,
                            "length": 27
                        }
                    ]
                },
                {
                    "content": "82,300 t to 72,000 t (a decrease of",
                    "polygon": [
                        3.1899,
                        7.4007,
                        5.2768,
                        7.4007,
                        5.2768,
                        7.5576,
                        3.1899,
                        7.5576
                    ],
                    "spans": [
                        {
                            "offset": 52527,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "13%), and the rock sole ABC de-",
                    "polygon": [
                        3.1946,
                        7.5719,
                        5.2768,
                        7.5624,
                        5.2768,
                        7.7098,
                        3.1946,
                        7.7241
                    ],
                    "spans": [
                        {
                            "offset": 52563,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "creased from 260,800 t to 185,000",
                    "polygon": [
                        3.1899,
                        7.7431,
                        5.2673,
                        7.7384,
                        5.2673,
                        7.8811,
                        3.1899,
                        7.8858
                    ],
                    "spans": [
                        {
                            "offset": 52595,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "t (a decrease of 29%). The ABC for",
                    "polygon": [
                        3.1851,
                        7.9096,
                        5.2768,
                        7.9001,
                        5.2768,
                        8.0475,
                        3.1851,
                        8.0618
                    ],
                    "spans": [
                        {
                            "offset": 52629,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "Atka mackerel increased from",
                    "polygon": [
                        3.1899,
                        8.0761,
                        5.2673,
                        8.0713,
                        5.2673,
                        8.214,
                        3.1899,
                        8.2188
                    ],
                    "spans": [
                        {
                            "offset": 52664,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "43,000 t to 117,100 t (an increase",
                    "polygon": [
                        3.1899,
                        8.2425,
                        5.2721,
                        8.2378,
                        5.2721,
                        8.3947,
                        3.1899,
                        8.3947
                    ],
                    "spans": [
                        {
                            "offset": 52693,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "of 172%), due primarily to a greatly",
                    "polygon": [
                        3.1946,
                        8.409,
                        5.2768,
                        8.4138,
                        5.2768,
                        8.566,
                        3.1946,
                        8.566
                    ],
                    "spans": [
                        {
                            "offset": 52728,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "increased estimate of biomass.",
                    "polygon": [
                        3.1804,
                        8.5707,
                        5.101,
                        8.5707,
                        5.101,
                        8.7277,
                        3.1804,
                        8.7324
                    ],
                    "spans": [
                        {
                            "offset": 52765,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "The preceding information was",
                    "polygon": [
                        3.3895,
                        8.7467,
                        5.2768,
                        8.7467,
                        5.2768,
                        8.8941,
                        3.3895,
                        8.8989
                    ],
                    "spans": [
                        {
                            "offset": 52796,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "provided by RICHARD METHOT.",
                    "polygon": [
                        3.1946,
                        8.9179,
                        5.1818,
                        8.9036,
                        5.1865,
                        9.0511,
                        3.1946,
                        9.0701
                    ],
                    "spans": [
                        {
                            "offset": 52826,
                            "length": 27
                        }
                    ]
                },
                {
                    "content": "Age and Growth Studies",
                    "polygon": [
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                        1.113,
                        7.0453,
                        1.1034,
                        7.0501,
                        1.2652,
                        5.429,
                        1.2747
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                    "spans": [
                        {
                            "offset": 52854,
                            "length": 22
                        }
                    ]
                },
                {
                    "content": "From January to December",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 52877,
                            "length": 24
                        }
                    ]
                },
                {
                    "content": "1992, the Age and Growth Task",
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                    "spans": [
                        {
                            "offset": 52902,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "estimated the ages of groundfish",
                    "polygon": [
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                        7.4969,
                        1.7693,
                        7.4969,
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                    "spans": [
                        {
                            "offset": 52932,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "species for 1,327 rock sole, 363 rex",
                    "polygon": [
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                        7.4969,
                        2.0785,
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                    "spans": [
                        {
                            "offset": 52965,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "sole, 1,254 yellowfin sole, 9,294",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 53002,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "walleye pollock, 4,237 Pacific cod,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 53036,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "3,403 sablefish, 827 Atka mack-",
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                    "spans": [
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                            "offset": 53072,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "erel, 5,104 Pacific whiting, and",
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                        7.4922,
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                    "spans": [
                        {
                            "offset": 53104,
                            "length": 32
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                    ]
                },
                {
                    "content": "1,908 Pacific ocean perch, for a",
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                            "offset": 53137,
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                        }
                    ]
                },
                {
                    "content": "total of 27,717. In addition 7,730",
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                    ]
                },
                {
                    "content": "fish were reexaminied, 3,851 were",
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                            "offset": 53205,
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                },
                {
                    "content": "reread, and 875 were examined",
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                    "spans": [
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                            "offset": 53239,
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                    ]
                },
                {
                    "content": "and determined to be unreadable.",
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                    "spans": [
                        {
                            "offset": 53269,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "In cooperation with the NMML,",
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                        7.4874,
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                    "spans": [
                        {
                            "offset": 53302,
                            "length": 29
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                    ]
                },
                {
                    "content": "radiometric counting equipment",
                    "polygon": [
                        5.4052,
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                },
                {
                    "content": "was purchased initially to support",
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                },
                {
                    "content": "work on the age validation of",
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                            "offset": 53398,
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                    ]
                },
                {
                    "content": "rockfishes (Pacific ocean perch,",
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                    "spans": [
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                            "offset": 53428,
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                    ]
                },
                {
                    "content": "shortspine thornyheads, shortra-",
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                    ]
                },
                {
                    "content": "ker, rougheye, and northern and",
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                    ]
                },
                {
                    "content": "dusky rockfish). Eventually the",
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                            "offset": 53526,
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                },
                {
                    "content": "equipment will be used for",
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                            "offset": 53558,
                            "length": 26
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                    "content": "radiometric investigations on ba-",
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                            "offset": 53585,
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                    ]
                },
                {
                    "content": "leen whales.",
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                            "offset": 53619,
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                    ]
                },
                {
                    "content": "The preceding information was",
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                            "offset": 53632,
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                    ]
                },
                {
                    "content": "provided by DAN KIMURA.",
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                            "offset": 53662,
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                    ]
                },
                {
                    "content": "Trophic Interactions",
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                    ]
                },
                {
                    "content": "Program",
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                        6.0689,
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                            "offset": 53707,
                            "length": 7
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                },
                {
                    "content": "Activities and research results",
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                    "spans": [
                        {
                            "offset": 53715,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "Approximately 141 fish stom-",
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                        6.5588,
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                    "spans": [
                        {
                            "offset": 53747,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "achs were collected and 2,366",
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                        {
                            "offset": 53776,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "were analyzed in the laboratory for",
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                        6.8918,
                        7.5112,
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                    "spans": [
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                            "offset": 53806,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "the Bering Sea area this quarter. A",
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                    "spans": [
                        {
                            "offset": 53842,
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                        }
                    ]
                },
                {
                    "content": "total of 623 fish stomachs from the",
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                    ]
                },
                {
                    "content": "Aleutian Islands were analyzed in",
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                            "offset": 53914,
                            "length": 33
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                    ]
                },
                {
                    "content": "the laboratory and 996 stomachs",
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                            "offset": 53948,
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                    ]
                },
                {
                    "content": "were collected from the West",
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                    "spans": [
                        {
                            "offset": 53980,
                            "length": 28
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                    ]
                },
                {
                    "content": "Coast slope survey. Only six ob-",
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                    "spans": [
                        {
                            "offset": 54009,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "servers were trained for stomach",
                    "polygon": [
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                            "offset": 54042,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "collection this quarter.",
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                    "spans": [
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                            "offset": 54075,
                            "length": 24
                        }
                    ]
                },
                {
                    "content": "New trophic interactions report",
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                    "spans": [
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                            "offset": 54100,
                            "length": 31
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                    ]
                },
                {
                    "content": "Task members completed a re-",
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                        8.7277,
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                    "spans": [
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                            "offset": 54132,
                            "length": 28
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                    ]
                },
                {
                    "content": "port summarizing the food habits",
                    "polygon": [
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                    "spans": [
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                            "offset": 54161,
                            "length": 32
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                    ]
                },
                {
                    "content": "and total consumption of Bering",
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                    ]
                },
                {
                    "content": "16",
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                    "spans": [
                        {
                            "offset": 54226,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "October-November-December 1992",
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                    "spans": [
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                    ]
                },
                {
                    "content": ".",
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                            "offset": 54260,
                            "length": 1
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                    ]
                }
            ],
            "spans": [
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                    "offset": 49882,
                    "length": 4379
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            ]
        },
        {
            "pageNumber": 20,
            "angle": 0,
            "width": 8.5417,
            "height": 10.9583,
            "unit": "inch",
            "words": [
                {
                    "content": "Table",
                    "polygon": [
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                    "confidence": 0.994,
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                        "offset": 54262,
                        "length": 5
                    }
                },
                {
                    "content": "1",
                    "polygon": [
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                    "confidence": 0.993,
                    "span": {
                        "offset": 54268,
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                },
                {
                    "content": ".--",
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                    "span": {
                        "offset": 54270,
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                },
                {
                    "content": "Gulf",
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                    "confidence": 0.989,
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                {
                    "content": "of",
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                {
                    "content": "Alaska",
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                    "span": {
                        "offset": 54282,
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                    }
                },
                {
                    "content": "Groundfish",
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                {
                    "content": "1992",
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                    "content": "and",
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                    "confidence": 0.997,
                    "span": {
                        "offset": 54305,
                        "length": 3
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                {
                    "content": "1993",
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                    "confidence": 0.99,
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                },
                {
                    "content": "acceptable",
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                },
                {
                    "content": "biological",
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                    "span": {
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                        "length": 10
                    }
                },
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                        4.823,
                        4.1569,
                        4.823,
                        4.2806,
                        4.5423,
                        4.2806
                    ],
                    "spans": [
                        {
                            "offset": 55849,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "100",
                    "polygon": [
                        5.8408,
                        4.1522,
                        6.1167,
                        4.1522,
                        6.1119,
                        4.2711,
                        5.8361,
                        4.2711
                    ],
                    "spans": [
                        {
                            "offset": 55853,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "90",
                    "polygon": [
                        6.7112,
                        4.1284,
                        6.9253,
                        4.1332,
                        6.9205,
                        4.2806,
                        6.7065,
                        4.2806
                    ],
                    "spans": [
                        {
                            "offset": 55857,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "and rougheye C",
                    "polygon": [
                        1.327,
                        4.3282,
                        2.7587,
                        4.3282,
                        2.7587,
                        4.4851,
                        1.327,
                        4.4899
                    ],
                    "spans": [
                        {
                            "offset": 55860,
                            "length": 14
                        }
                    ]
                },
                {
                    "content": "1,290",
                    "polygon": [
                        3.5578,
                        4.3234,
                        4.0334,
                        4.3234,
                        4.0334,
                        4.4613,
                        3.5578,
                        4.4613
                    ],
                    "spans": [
                        {
                            "offset": 55875,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,290",
                    "polygon": [
                        4.3521,
                        4.3234,
                        4.823,
                        4.3234,
                        4.823,
                        4.4566,
                        4.3521,
                        4.4566
                    ],
                    "spans": [
                        {
                            "offset": 55881,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,290",
                    "polygon": [
                        5.6363,
                        4.3186,
                        6.1214,
                        4.3186,
                        6.1214,
                        4.4471,
                        5.6363,
                        4.4518
                    ],
                    "spans": [
                        {
                            "offset": 55887,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,161",
                    "polygon": [
                        6.4211,
                        4.2996,
                        6.9205,
                        4.2996,
                        6.9205,
                        4.4566,
                        6.4211,
                        4.4566
                    ],
                    "spans": [
                        {
                            "offset": 55893,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "E",
                    "polygon": [
                        2.6445,
                        4.5041,
                        2.7492,
                        4.4994,
                        2.7492,
                        4.6183,
                        2.6398,
                        4.6183
                    ],
                    "spans": [
                        {
                            "offset": 55899,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "570",
                    "polygon": [
                        3.7385,
                        4.4946,
                        4.0334,
                        4.4946,
                        4.0239,
                        4.6135,
                        3.7385,
                        4.6135
                    ],
                    "spans": [
                        {
                            "offset": 55901,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "570",
                    "polygon": [
                        4.5328,
                        4.4946,
                        4.823,
                        4.4946,
                        4.8182,
                        4.6088,
                        4.5281,
                        4.6088
                    ],
                    "spans": [
                        {
                            "offset": 55905,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "570",
                    "polygon": [
                        5.8218,
                        4.4851,
                        6.1167,
                        4.4851,
                        6.1119,
                        4.604,
                        5.8218,
                        4.6088
                    ],
                    "spans": [
                        {
                            "offset": 55909,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "513",
                    "polygon": [
                        6.6256,
                        4.4804,
                        6.93,
                        4.4756,
                        6.9205,
                        4.5993,
                        6.6304,
                        4.5993
                    ],
                    "spans": [
                        {
                            "offset": 55913,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "Total",
                    "polygon": [
                        2.4353,
                        4.6563,
                        2.9442,
                        4.6563,
                        2.9442,
                        4.7848,
                        2.4353,
                        4.7895
                    ],
                    "spans": [
                        {
                            "offset": 55917,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,960",
                    "polygon": [
                        3.5578,
                        4.6563,
                        4.0286,
                        4.6516,
                        4.0334,
                        4.7895,
                        3.5578,
                        4.7943
                    ],
                    "spans": [
                        {
                            "offset": 55923,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,960",
                    "polygon": [
                        4.3426,
                        4.6516,
                        4.8182,
                        4.6468,
                        4.823,
                        4.7848,
                        4.3426,
                        4.7895
                    ],
                    "spans": [
                        {
                            "offset": 55929,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,960",
                    "polygon": [
                        5.6363,
                        4.6468,
                        6.1119,
                        4.6421,
                        6.1167,
                        4.78,
                        5.6363,
                        4.7848
                    ],
                    "spans": [
                        {
                            "offset": 55935,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,764",
                    "polygon": [
                        6.4354,
                        4.6421,
                        6.9205,
                        4.6373,
                        6.9253,
                        4.7752,
                        6.4354,
                        4.78
                    ],
                    "spans": [
                        {
                            "offset": 55941,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Pelagic shelf W",
                    "polygon": [
                        1.2319,
                        5.1462,
                        2.7634,
                        5.1415,
                        2.7634,
                        5.3032,
                        1.2319,
                        5.3127
                    ],
                    "spans": [
                        {
                            "offset": 55947,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "1,212",
                    "polygon": [
                        3.5578,
                        5.1462,
                        4.0334,
                        5.1462,
                        4.0334,
                        5.2842,
                        3.5578,
                        5.2842
                    ],
                    "spans": [
                        {
                            "offset": 55963,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,010",
                    "polygon": [
                        4.3521,
                        5.1415,
                        4.823,
                        5.1415,
                        4.823,
                        5.2746,
                        4.3521,
                        5.2794
                    ],
                    "spans": [
                        {
                            "offset": 55969,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,212",
                    "polygon": [
                        5.641,
                        5.1367,
                        6.1214,
                        5.132,
                        6.1214,
                        5.2699,
                        5.641,
                        5.2794
                    ],
                    "spans": [
                        {
                            "offset": 55975,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,010",
                    "polygon": [
                        6.4401,
                        5.1272,
                        6.9205,
                        5.1272,
                        6.9205,
                        5.2699,
                        6.4401,
                        5.2699
                    ],
                    "spans": [
                        {
                            "offset": 55981,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "rockfish",
                    "polygon": [
                        1.327,
                        5.3032,
                        2.1594,
                        5.3079,
                        2.1594,
                        5.4601,
                        1.327,
                        5.4601
                    ],
                    "spans": [
                        {
                            "offset": 55987,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "C",
                    "polygon": [
                        2.6445,
                        5.327,
                        2.7444,
                        5.327,
                        2.7444,
                        5.4411,
                        2.6445,
                        5.4411
                    ],
                    "spans": [
                        {
                            "offset": 55996,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "4,393",
                    "polygon": [
                        3.5482,
                        5.3127,
                        4.0334,
                        5.3127,
                        4.0334,
                        5.4459,
                        3.5482,
                        5.4459
                    ],
                    "spans": [
                        {
                            "offset": 55998,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "4,450",
                    "polygon": [
                        4.3426,
                        5.3079,
                        4.823,
                        5.3079,
                        4.8277,
                        5.4411,
                        4.3426,
                        5.4411
                    ],
                    "spans": [
                        {
                            "offset": 56004,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "4,393",
                    "polygon": [
                        5.622,
                        5.3032,
                        6.1262,
                        5.2937,
                        6.131,
                        5.4316,
                        5.622,
                        5.4411
                    ],
                    "spans": [
                        {
                            "offset": 56010,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "4,450",
                    "polygon": [
                        6.4354,
                        5.2984,
                        6.9253,
                        5.2937,
                        6.9253,
                        5.4268,
                        6.4354,
                        5.4316
                    ],
                    "spans": [
                        {
                            "offset": 56016,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "E",
                    "polygon": [
                        2.6588,
                        5.4887,
                        2.7492,
                        5.4934,
                        2.7444,
                        5.6028,
                        2.6541,
                        5.6028
                    ],
                    "spans": [
                        {
                            "offset": 56022,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "1,281",
                    "polygon": [
                        3.5578,
                        5.4792,
                        4.0334,
                        5.4792,
                        4.0382,
                        5.6123,
                        3.5578,
                        5.6123
                    ],
                    "spans": [
                        {
                            "offset": 56024,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,280",
                    "polygon": [
                        4.3521,
                        5.4792,
                        4.8277,
                        5.4744,
                        4.8277,
                        5.6076,
                        4.3521,
                        5.6123
                    ],
                    "spans": [
                        {
                            "offset": 56030,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,281",
                    "polygon": [
                        5.641,
                        5.4649,
                        6.1262,
                        5.4649,
                        6.1262,
                        5.6028,
                        5.641,
                        5.6076
                    ],
                    "spans": [
                        {
                            "offset": 56036,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,280",
                    "polygon": [
                        6.4449,
                        5.4649,
                        6.9253,
                        5.4649,
                        6.9253,
                        5.5981,
                        6.4449,
                        5.5981
                    ],
                    "spans": [
                        {
                            "offset": 56042,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Total",
                    "polygon": [
                        2.4353,
                        5.6504,
                        2.9347,
                        5.6456,
                        2.9347,
                        5.7741,
                        2.4353,
                        5.7788
                    ],
                    "spans": [
                        {
                            "offset": 56048,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "6,886",
                    "polygon": [
                        3.5482,
                        5.6456,
                        4.0334,
                        5.6361,
                        4.0334,
                        5.7741,
                        3.5482,
                        5.7836
                    ],
                    "spans": [
                        {
                            "offset": 56054,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "6,740",
                    "polygon": [
                        4.3378,
                        5.6409,
                        4.823,
                        5.6361,
                        4.823,
                        5.7741,
                        4.3378,
                        5.7788
                    ],
                    "spans": [
                        {
                            "offset": 56060,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "6,886",
                    "polygon": [
                        5.6315,
                        5.6314,
                        6.1214,
                        5.6266,
                        6.1214,
                        5.7693,
                        5.6315,
                        5.7741
                    ],
                    "spans": [
                        {
                            "offset": 56066,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "6,740",
                    "polygon": [
                        6.4354,
                        5.6314,
                        6.9205,
                        5.6266,
                        6.9253,
                        5.7645,
                        6.4354,
                        5.7693
                    ],
                    "spans": [
                        {
                            "offset": 56072,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Demersal",
                    "polygon": [
                        1.2319,
                        5.9786,
                        2.0452,
                        5.9786,
                        2.0452,
                        6.1165,
                        1.2319,
                        6.1165
                    ],
                    "spans": [
                        {
                            "offset": 56078,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "SEO",
                    "polygon": [
                        2.4495,
                        5.9833,
                        2.7587,
                        5.9833,
                        2.7539,
                        6.107,
                        2.4495,
                        6.107
                    ],
                    "spans": [
                        {
                            "offset": 56087,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "550",
                    "polygon": [
                        3.7433,
                        5.9786,
                        4.0382,
                        5.9738,
                        4.0334,
                        6.0975,
                        3.7433,
                        6.1022
                    ],
                    "spans": [
                        {
                            "offset": 56091,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "800",
                    "polygon": [
                        4.5423,
                        5.9691,
                        4.823,
                        5.9691,
                        4.823,
                        6.0975,
                        4.5376,
                        6.0975
                    ],
                    "spans": [
                        {
                            "offset": 56095,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "550",
                    "polygon": [
                        5.8313,
                        5.9643,
                        6.1262,
                        5.9643,
                        6.1167,
                        6.0927,
                        5.8313,
                        6.0927
                    ],
                    "spans": [
                        {
                            "offset": 56099,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "800",
                    "polygon": [
                        6.6209,
                        5.9405,
                        6.9395,
                        5.9453,
                        6.9348,
                        6.1022,
                        6.6161,
                        6.1022
                    ],
                    "spans": [
                        {
                            "offset": 56103,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "Thornyhead",
                    "polygon": [
                        1.2367,
                        6.3067,
                        2.2545,
                        6.3067,
                        2.2545,
                        6.4589,
                        1.2367,
                        6.4637
                    ],
                    "spans": [
                        {
                            "offset": 56107,
                            "length": 10
                        }
                    ]
                },
                {
                    "content": "rockfish",
                    "polygon": [
                        1.3365,
                        6.478,
                        2.1546,
                        6.4732,
                        2.1546,
                        6.6064,
                        1.3365,
                        6.6159
                    ],
                    "spans": [
                        {
                            "offset": 56118,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "GW",
                    "polygon": [
                        2.5256,
                        6.2877,
                        2.7634,
                        6.2925,
                        2.7634,
                        6.4542,
                        2.5256,
                        6.4542
                    ],
                    "spans": [
                        {
                            "offset": 56127,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "1,798",
                    "polygon": [
                        3.553,
                        6.3067,
                        4.0382,
                        6.302,
                        4.0382,
                        6.4447,
                        3.553,
                        6.4494
                    ],
                    "spans": [
                        {
                            "offset": 56130,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,180",
                    "polygon": [
                        4.3521,
                        6.302,
                        4.8325,
                        6.2972,
                        4.8325,
                        6.4399,
                        4.3521,
                        6.4447
                    ],
                    "spans": [
                        {
                            "offset": 56136,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,798",
                    "polygon": [
                        5.641,
                        6.2877,
                        6.131,
                        6.283,
                        6.1357,
                        6.4352,
                        5.641,
                        6.4399
                    ],
                    "spans": [
                        {
                            "offset": 56142,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,062",
                    "polygon": [
                        6.4449,
                        6.2925,
                        6.9348,
                        6.2925,
                        6.9348,
                        6.4304,
                        6.4449,
                        6.4352
                    ],
                    "spans": [
                        {
                            "offset": 56148,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Other species",
                    "polygon": [
                        1.2414,
                        6.8014,
                        2.5399,
                        6.8062,
                        2.5399,
                        6.9584,
                        1.2414,
                        6.9536
                    ],
                    "spans": [
                        {
                            "offset": 56154,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "NA",
                    "polygon": [
                        3.6339,
                        6.8109,
                        3.8479,
                        6.8062,
                        3.8479,
                        6.9251,
                        3.6291,
                        6.9298
                    ],
                    "spans": [
                        {
                            "offset": 56168,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "NA",
                    "polygon": [
                        4.4282,
                        6.8062,
                        4.647,
                        6.8062,
                        4.6422,
                        6.9251,
                        4.4329,
                        6.9251
                    ],
                    "spans": [
                        {
                            "offset": 56171,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "13,432",
                    "polygon": [
                        5.5269,
                        6.7824,
                        6.131,
                        6.7824,
                        6.131,
                        6.9393,
                        5.5269,
                        6.9393
                    ],
                    "spans": [
                        {
                            "offset": 56174,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "14,602",
                    "polygon": [
                        6.3307,
                        6.7871,
                        6.9395,
                        6.7871,
                        6.9395,
                        6.9251,
                        6.3307,
                        6.9298
                    ],
                    "spans": [
                        {
                            "offset": 56181,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "*",
                    "polygon": [
                        1.2557,
                        7.3056,
                        1.3318,
                        7.3103,
                        1.3365,
                        7.4007,
                        1.2509,
                        7.3959
                    ],
                    "spans": [
                        {
                            "offset": 56188,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "Shelikof Strait pollock is included within the W/C ABC range.",
                    "polygon": [
                        1.6505,
                        7.296,
                        7.7243,
                        7.277,
                        7.7243,
                        7.434,
                        1.6505,
                        7.4482
                    ],
                    "spans": [
                        {
                            "offset": 56190,
                            "length": 61
                        }
                    ]
                },
                {
                    "content": "\"Deep water flatfish\" includes rex sole, Dover sole, and",
                    "polygon": [
                        1.6552,
                        7.4673,
                        7.2535,
                        7.4482,
                        7.2535,
                        7.5957,
                        1.6552,
                        7.6147
                    ],
                    "spans": [
                        {
                            "offset": 56252,
                            "length": 56
                        }
                    ]
                },
                {
                    "content": "Greenland turbot.",
                    "polygon": [
                        1.7456,
                        7.6337,
                        3.4246,
                        7.629,
                        3.4246,
                        7.7669,
                        1.7456,
                        7.7717
                    ],
                    "spans": [
                        {
                            "offset": 56309,
                            "length": 17
                        }
                    ]
                },
                {
                    "content": "*",
                    "polygon": [
                        1.2557,
                        7.8002,
                        1.3508,
                        7.8002,
                        1.3508,
                        7.9144,
                        1.2509,
                        7.9096
                    ],
                    "spans": [
                        {
                            "offset": 56327,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "\"Shallow water flatfish\" includes rock sole, yellowfin sole,",
                    "polygon": [
                        1.6552,
                        7.7859,
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                        3.2139,
                        3.675,
                        3.2187
                    ],
                    "spans": [
                        {
                            "offset": 56891,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "7,000",
                    "polygon": [
                        4.7809,
                        3.0852,
                        5.2909,
                        3.0852,
                        5.2909,
                        3.2139,
                        4.7809,
                        3.2187
                    ],
                    "spans": [
                        {
                            "offset": 56897,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "7,000",
                    "polygon": [
                        5.8819,
                        3.0852,
                        6.392,
                        3.0852,
                        6.392,
                        3.2092,
                        5.8819,
                        3.2139
                    ],
                    "spans": [
                        {
                            "offset": 56903,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "7,000",
                    "polygon": [
                        6.9735,
                        3.0709,
                        7.4644,
                        3.0709,
                        7.4644,
                        3.2282,
                        6.9735,
                        3.2282
                    ],
                    "spans": [
                        {
                            "offset": 56909,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Arrowtooth flounder",
                    "polygon": [
                        1.0486,
                        3.2378,
                        3.0029,
                        3.2378,
                        3.0029,
                        3.3951,
                        1.0486,
                        3.3999
                    ],
                    "spans": [
                        {
                            "offset": 56915,
                            "length": 19
                        }
                    ]
                },
                {
                    "content": "82,300",
                    "polygon": [
                        3.5701,
                        3.2521,
                        4.1755,
                        3.2473,
                        4.1755,
                        3.3761,
                        3.5701,
                        3.3761
                    ],
                    "spans": [
                        {
                            "offset": 56935,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "72,000",
                    "polygon": [
                        4.676,
                        3.2521,
                        5.2813,
                        3.2473,
                        5.2861,
                        3.3761,
                        4.676,
                        3.3808
                    ],
                    "spans": [
                        {
                            "offset": 56942,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "10,000",
                    "polygon": [
                        5.8009,
                        3.2426,
                        6.3967,
                        3.2426,
                        6.3967,
                        3.3761,
                        5.8009,
                        3.3761
                    ],
                    "spans": [
                        {
                            "offset": 56949,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "10,000",
                    "polygon": [
                        6.8877,
                        3.233,
                        7.4787,
                        3.233,
                        7.4787,
                        3.3904,
                        6.8877,
                        3.3904
                    ],
                    "spans": [
                        {
                            "offset": 56956,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Rock sole",
                    "polygon": [
                        1.0534,
                        3.4094,
                        1.9972,
                        3.4094,
                        2.002,
                        3.5525,
                        1.0534,
                        3.5573
                    ],
                    "spans": [
                        {
                            "offset": 56963,
                            "length": 9
                        }
                    ]
                },
                {
                    "content": "260,800",
                    "polygon": [
                        3.4653,
                        3.4094,
                        4.1707,
                        3.4142,
                        4.1707,
                        3.543,
                        3.4653,
                        3.543
                    ],
                    "spans": [
                        {
                            "offset": 56973,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "185,000",
                    "polygon": [
                        4.5807,
                        3.4142,
                        5.2813,
                        3.4142,
                        5.2813,
                        3.543,
                        4.5807,
                        3.543
                    ],
                    "spans": [
                        {
                            "offset": 56981,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "40,000",
                    "polygon": [
                        5.7961,
                        3.4094,
                        6.392,
                        3.4094,
                        6.3967,
                        3.5382,
                        5.7961,
                        3.543
                    ],
                    "spans": [
                        {
                            "offset": 56989,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "75,000",
                    "polygon": [
                        6.8972,
                        3.4094,
                        7.474,
                        3.4142,
                        7.474,
                        3.543,
                        6.8972,
                        3.5382
                    ],
                    "spans": [
                        {
                            "offset": 56996,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Other flatfish",
                    "polygon": [
                        1.0582,
                        3.5668,
                        2.5024,
                        3.5668,
                        2.5024,
                        3.7146,
                        1.0582,
                        3.7194
                    ],
                    "spans": [
                        {
                            "offset": 57003,
                            "length": 14
                        }
                    ]
                },
                {
                    "content": "199,600",
                    "polygon": [
                        3.4748,
                        3.5763,
                        4.1707,
                        3.5763,
                        4.1707,
                        3.7099,
                        3.4748,
                        3.7051
                    ],
                    "spans": [
                        {
                            "offset": 57018,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "191,000",
                    "polygon": [
                        4.5807,
                        3.5763,
                        5.2813,
                        3.5763,
                        5.2813,
                        3.7051,
                        4.5807,
                        3.7051
                    ],
                    "spans": [
                        {
                            "offset": 57026,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "79,000",
                    "polygon": [
                        5.7961,
                        3.5716,
                        6.392,
                        3.5716,
                        6.392,
                        3.7003,
                        5.7961,
                        3.7003
                    ],
                    "spans": [
                        {
                            "offset": 57034,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "79,000",
                    "polygon": [
                        6.8972,
                        3.5716,
                        7.4787,
                        3.5716,
                        7.4787,
                        3.7003,
                        6.8972,
                        3.7003
                    ],
                    "spans": [
                        {
                            "offset": 57041,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Sablefish",
                    "polygon": [
                        1.0582,
                        3.7337,
                        2.0067,
                        3.7337,
                        2.0067,
                        3.8768,
                        1.0582,
                        3.8815
                    ],
                    "spans": [
                        {
                            "offset": 57048,
                            "length": 9
                        }
                    ]
                },
                {
                    "content": "4,400",
                    "polygon": [
                        3.6845,
                        3.7432,
                        4.1755,
                        3.7385,
                        4.1755,
                        3.872,
                        3.6845,
                        3.872
                    ],
                    "spans": [
                        {
                            "offset": 57058,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "4,100",
                    "polygon": [
                        4.7856,
                        3.7432,
                        5.2861,
                        3.7432,
                        5.2861,
                        3.8672,
                        4.7856,
                        3.8672
                    ],
                    "spans": [
                        {
                            "offset": 57064,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "4,400",
                    "polygon": [
                        5.8915,
                        3.7432,
                        6.392,
                        3.7385,
                        6.392,
                        3.872,
                        5.8915,
                        3.872
                    ],
                    "spans": [
                        {
                            "offset": 57070,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "4,100",
                    "polygon": [
                        7.0021,
                        3.7385,
                        7.4787,
                        3.7337,
                        7.4787,
                        3.8672,
                        7.0021,
                        3.872
                    ],
                    "spans": [
                        {
                            "offset": 57076,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "POP complex",
                    "polygon": [
                        1.0629,
                        3.8911,
                        2.2021,
                        3.8958,
                        2.1974,
                        4.058,
                        1.0629,
                        4.0532
                    ],
                    "spans": [
                        {
                            "offset": 57082,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "23,530",
                    "polygon": [
                        3.5749,
                        3.9054,
                        4.1707,
                        3.9054,
                        4.1707,
                        4.0389,
                        3.5749,
                        4.0341
                    ],
                    "spans": [
                        {
                            "offset": 57094,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "25,520",
                    "polygon": [
                        4.676,
                        3.9006,
                        5.2861,
                        3.9006,
                        5.2813,
                        4.0341,
                        4.676,
                        4.0293
                    ],
                    "spans": [
                        {
                            "offset": 57101,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "23,530",
                    "polygon": [
                        5.7914,
                        3.9006,
                        6.3967,
                        3.9054,
                        6.392,
                        4.0293,
                        5.7914,
                        4.0293
                    ],
                    "spans": [
                        {
                            "offset": 57108,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "24,630",
                    "polygon": [
                        6.8877,
                        3.9006,
                        7.474,
                        3.9006,
                        7.474,
                        4.0293,
                        6.8877,
                        4.0341
                    ],
                    "spans": [
                        {
                            "offset": 57115,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Other rockfish",
                    "polygon": [
                        1.0582,
                        4.058,
                        2.5024,
                        4.058,
                        2.5024,
                        4.2105,
                        1.0582,
                        4.2153
                    ],
                    "spans": [
                        {
                            "offset": 57122,
                            "length": 14
                        }
                    ]
                },
                {
                    "content": "1,325",
                    "polygon": [
                        3.6798,
                        4.0675,
                        4.1803,
                        4.0627,
                        4.1803,
                        4.201,
                        3.6798,
                        4.2058
                    ],
                    "spans": [
                        {
                            "offset": 57137,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,325",
                    "polygon": [
                        4.7856,
                        4.0675,
                        5.2909,
                        4.0627,
                        5.2909,
                        4.201,
                        4.7856,
                        4.201
                    ],
                    "spans": [
                        {
                            "offset": 57143,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,325",
                    "polygon": [
                        5.901,
                        4.0627,
                        6.3967,
                        4.0627,
                        6.3967,
                        4.1962,
                        5.901,
                        4.201
                    ],
                    "spans": [
                        {
                            "offset": 57149,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "1,190",
                    "polygon": [
                        6.9973,
                        4.0675,
                        7.474,
                        4.0627,
                        7.4787,
                        4.1962,
                        6.9973,
                        4.201
                    ],
                    "spans": [
                        {
                            "offset": 57155,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Atka mackerel",
                    "polygon": [
                        1.0582,
                        4.2249,
                        2.388,
                        4.2201,
                        2.388,
                        4.3774,
                        1.0582,
                        4.3822
                    ],
                    "spans": [
                        {
                            "offset": 57161,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "43,000",
                    "polygon": [
                        3.5844,
                        4.2344,
                        4.1707,
                        4.2344,
                        4.1755,
                        4.3631,
                        3.5844,
                        4.3679
                    ],
                    "spans": [
                        {
                            "offset": 57175,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "117,100",
                    "polygon": [
                        4.5807,
                        4.2344,
                        5.2861,
                        4.2344,
                        5.2909,
                        4.3631,
                        4.5807,
                        4.3679
                    ],
                    "spans": [
                        {
                            "offset": 57182,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "43,000",
                    "polygon": [
                        5.8009,
                        4.2344,
                        6.392,
                        4.2296,
                        6.392,
                        4.3584,
                        5.8009,
                        4.3631
                    ],
                    "spans": [
                        {
                            "offset": 57190,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "32,000",
                    "polygon": [
                        6.8924,
                        4.2296,
                        7.474,
                        4.2296,
                        7.474,
                        4.3631,
                        6.8924,
                        4.3631
                    ],
                    "spans": [
                        {
                            "offset": 57197,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Squid",
                    "polygon": [
                        1.0534,
                        4.3917,
                        1.6016,
                        4.3917,
                        1.6016,
                        4.5539,
                        1.0534,
                        4.5539
                    ],
                    "spans": [
                        {
                            "offset": 57204,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "3,600",
                    "polygon": [
                        3.6845,
                        4.4061,
                        4.1755,
                        4.4013,
                        4.1755,
                        4.53,
                        3.6845,
                        4.5348
                    ],
                    "spans": [
                        {
                            "offset": 57210,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "3,400",
                    "polygon": [
                        4.7904,
                        4.4061,
                        5.2909,
                        4.4013,
                        5.2909,
                        4.5253,
                        4.7904,
                        4.53
                    ],
                    "spans": [
                        {
                            "offset": 57216,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "2,000",
                    "polygon": [
                        5.8915,
                        4.3965,
                        6.392,
                        4.3965,
                        6.3967,
                        4.5253,
                        5.8915,
                        4.53
                    ],
                    "spans": [
                        {
                            "offset": 57222,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "2,000",
                    "polygon": [
                        6.9735,
                        4.3822,
                        7.4644,
                        4.387,
                        7.4644,
                        4.5443,
                        6.9735,
                        4.5396
                    ],
                    "spans": [
                        {
                            "offset": 57228,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Other species",
                    "polygon": [
                        1.0582,
                        4.5539,
                        2.4071,
                        4.5539,
                        2.4071,
                        4.7255,
                        1.0582,
                        4.7255
                    ],
                    "spans": [
                        {
                            "offset": 57234,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "27,200",
                    "polygon": [
                        3.5749,
                        4.5634,
                        4.1803,
                        4.5634,
                        4.1803,
                        4.7065,
                        3.5749,
                        4.7065
                    ],
                    "spans": [
                        {
                            "offset": 57248,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "26,600",
                    "polygon": [
                        4.6712,
                        4.5634,
                        5.2956,
                        4.5586,
                        5.2956,
                        4.6969,
                        4.6712,
                        4.7017
                    ],
                    "spans": [
                        {
                            "offset": 57255,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "20,000",
                    "polygon": [
                        5.7914,
                        4.5586,
                        6.3967,
                        4.5586,
                        6.3967,
                        4.7017,
                        5.7914,
                        4.7017
                    ],
                    "spans": [
                        {
                            "offset": 57262,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "26,600",
                    "polygon": [
                        6.8829,
                        4.5634,
                        7.4787,
                        4.5634,
                        7.4787,
                        4.6922,
                        6.8829,
                        4.6969
                    ],
                    "spans": [
                        {
                            "offset": 57269,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "Sea groundfish populations",
                    "polygon": [
                        1.0057,
                        5.1785,
                        3.1126,
                        5.1738,
                        3.1126,
                        5.3359,
                        1.0057,
                        5.3359
                    ],
                    "spans": [
                        {
                            "offset": 57276,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "through 1989. Numbers-at-age of",
                    "polygon": [
                        1.0057,
                        5.3454,
                        3.1126,
                        5.3454,
                        3.1126,
                        5.498,
                        1.0057,
                        5.5076
                    ],
                    "spans": [
                        {
                            "offset": 57303,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "snow crab, Tanner crab, and wall-",
                    "polygon": [
                        1.0105,
                        5.5171,
                        3.103,
                        5.5076,
                        3.1078,
                        5.6602,
                        1.0105,
                        5.6697
                    ],
                    "spans": [
                        {
                            "offset": 57335,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "eye pollock consumed by",
                    "polygon": [
                        1.001,
                        5.6888,
                        3.103,
                        5.6745,
                        3.1078,
                        5.8318,
                        1.001,
                        5.8461
                    ],
                    "spans": [
                        {
                            "offset": 57369,
                            "length": 23
                        }
                    ]
                },
                {
                    "content": "groundfish predators were esti-",
                    "polygon": [
                        1.0057,
                        5.8509,
                        3.103,
                        5.8414,
                        3.103,
                        5.994,
                        1.0057,
                        6.0083
                    ],
                    "spans": [
                        {
                            "offset": 57393,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "mated for 1984 through 1989.",
                    "polygon": [
                        1.0105,
                        6.0083,
                        3.0983,
                        5.9987,
                        3.0983,
                        6.1608,
                        1.0105,
                        6.1656
                    ],
                    "spans": [
                        {
                            "offset": 57425,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "These numbers were used to re-",
                    "polygon": [
                        1.0105,
                        6.1752,
                        3.103,
                        6.1752,
                        3.103,
                        6.3182,
                        1.0105,
                        6.323
                    ],
                    "spans": [
                        {
                            "offset": 57454,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "construct the respective size of the",
                    "polygon": [
                        1.02,
                        6.3373,
                        3.1078,
                        6.3325,
                        3.1078,
                        6.4899,
                        1.02,
                        6.4946
                    ],
                    "spans": [
                        {
                            "offset": 57485,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "juvenile populations of these prey",
                    "polygon": [
                        1.0057,
                        6.4994,
                        3.1126,
                        6.4994,
                        3.1126,
                        6.6663,
                        1.0057,
                        6.6711
                    ],
                    "spans": [
                        {
                            "offset": 57522,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "and to calculate annual instanta-",
                    "polygon": [
                        1.0105,
                        6.6663,
                        3.1078,
                        6.6615,
                        3.1078,
                        6.8141,
                        1.0105,
                        6.8189
                    ],
                    "spans": [
                        {
                            "offset": 57557,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "neous predation mortality coeffi-",
                    "polygon": [
                        1.0105,
                        6.838,
                        3.103,
                        6.8284,
                        3.1078,
                        6.9763,
                        1.0105,
                        6.9858
                    ],
                    "spans": [
                        {
                            "offset": 57591,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "cients. Fluctuations in numbers of",
                    "polygon": [
                        1.0105,
                        6.9953,
                        3.1173,
                        6.9906,
                        3.1173,
                        7.1431,
                        1.0105,
                        7.1479
                    ],
                    "spans": [
                        {
                            "offset": 57625,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "prey consumed at age can occur",
                    "polygon": [
                        1.0105,
                        7.167,
                        3.1126,
                        7.1622,
                        3.1173,
                        7.3196,
                        1.0105,
                        7.3291
                    ],
                    "spans": [
                        {
                            "offset": 57660,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "through several processes:",
                    "polygon": [
                        1.0153,
                        7.3291,
                        3.1078,
                        7.3244,
                        3.1078,
                        7.4769,
                        1.0153,
                        7.4817
                    ],
                    "spans": [
                        {
                            "offset": 57691,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "changes in predator or prey abun-",
                    "polygon": [
                        1.02,
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                        7.4865,
                        3.1173,
                        7.6438,
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                    "spans": [
                        {
                            "offset": 57718,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "dance, changes in prey availability,",
                    "polygon": [
                        1.02,
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                        3.1078,
                        7.6581,
                        3.1078,
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                    "spans": [
                        {
                            "offset": 57752,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "or predators switching to a more",
                    "polygon": [
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                        7.825,
                        3.1173,
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                    "spans": [
                        {
                            "offset": 57789,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "abundant prey source. If preda-",
                    "polygon": [
                        1.0153,
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                        7.9919,
                        3.1173,
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                    "spans": [
                        {
                            "offset": 57822,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "tors respond to increases in prey",
                    "polygon": [
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                        3.1269,
                        8.1588,
                        3.1269,
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                        8.321
                    ],
                    "spans": [
                        {
                            "offset": 57854,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "abundance by switching preferen-",
                    "polygon": [
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                        8.321,
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                        8.321,
                        3.1173,
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                    "spans": [
                        {
                            "offset": 57888,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "tially to feeding on the more abun-",
                    "polygon": [
                        1.0153,
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                        3.1126,
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                    ],
                    "spans": [
                        {
                            "offset": 57921,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "dant prey, they can cause",
                    "polygon": [
                        1.02,
                        8.6643,
                        3.1221,
                        8.6643,
                        3.1221,
                        8.8216,
                        1.02,
                        8.8216
                    ],
                    "spans": [
                        {
                            "offset": 57957,
                            "length": 25
                        }
                    ]
                },
                {
                    "content": "density-dependent mortality on",
                    "polygon": [
                        1.02,
                        8.8312,
                        3.1221,
                        8.8312,
                        3.1221,
                        8.9885,
                        1.02,
                        8.9933
                    ],
                    "spans": [
                        {
                            "offset": 57983,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "that prey species. This means that",
                    "polygon": [
                        1.0105,
                        9.0028,
                        3.1269,
                        8.9885,
                        3.1269,
                        9.1507,
                        1.0105,
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                    "spans": [
                        {
                            "offset": 58014,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "predators can alter the relative size",
                    "polygon": [
                        1.02,
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                        3.1221,
                        9.1602,
                        3.1269,
                        9.3176,
                        1.02,
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                    ],
                    "spans": [
                        {
                            "offset": 58049,
                            "length": 37
                        }
                    ]
                },
                {
                    "content": "of the prey population. Changes",
                    "polygon": [
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                        3.1316,
                        9.3271,
                        3.1316,
                        9.494,
                        1.0248,
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                    ],
                    "spans": [
                        {
                            "offset": 58087,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "across years in annual predation",
                    "polygon": [
                        1.02,
                        9.5083,
                        3.1221,
                        9.4988,
                        3.1221,
                        9.6609,
                        1.02,
                        9.6704
                    ],
                    "spans": [
                        {
                            "offset": 58119,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "mortality coefficients at age of ju-",
                    "polygon": [
                        3.227,
                        5.1738,
                        5.3195,
                        5.169,
                        5.3195,
                        5.3264,
                        3.227,
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                    "spans": [
                        {
                            "offset": 58152,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "venile prey populations provide",
                    "polygon": [
                        3.246,
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                        5.3242,
                        5.3359,
                        5.329,
                        5.4933,
                        3.246,
                        5.5028
                    ],
                    "spans": [
                        {
                            "offset": 58189,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "evidence that this process may be",
                    "polygon": [
                        3.246,
                        5.5028,
                        5.3242,
                        5.5028,
                        5.3242,
                        5.6602,
                        3.246,
                        5.6602
                    ],
                    "spans": [
                        {
                            "offset": 58221,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "occurring.",
                    "polygon": [
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                        5.6792,
                        3.8752,
                        5.8271,
                        3.2413,
                        5.8271
                    ],
                    "spans": [
                        {
                            "offset": 58255,
                            "length": 10
                        }
                    ]
                },
                {
                    "content": "Fluctuations in estimates of an-",
                    "polygon": [
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                        5.8318,
                        5.3195,
                        5.8271,
                        5.3195,
                        5.9796,
                        3.4415,
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                    ],
                    "spans": [
                        {
                            "offset": 58266,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "nual predation mortality coeffi-",
                    "polygon": [
                        3.2508,
                        6.0035,
                        5.3195,
                        5.9987,
                        5.3195,
                        6.1465,
                        3.2508,
                        6.1608
                    ],
                    "spans": [
                        {
                            "offset": 58299,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "cients at age were existent for",
                    "polygon": [
                        3.2603,
                        6.1704,
                        5.3195,
                        6.1608,
                        5.3195,
                        6.3087,
                        3.2603,
                        6.323
                    ],
                    "spans": [
                        {
                            "offset": 58332,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "snow crab, Tanner crab, and wall-",
                    "polygon": [
                        3.2603,
                        6.3325,
                        5.3099,
                        6.323,
                        5.3099,
                        6.4708,
                        3.2603,
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                    ],
                    "spans": [
                        {
                            "offset": 58364,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "eye pollock (Table 3). Large fluc-",
                    "polygon": [
                        3.2651,
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                        5.3242,
                        6.4899,
                        5.3242,
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                    ],
                    "spans": [
                        {
                            "offset": 58398,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "tuations in coefficients for snow",
                    "polygon": [
                        3.246,
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                        6.6615,
                        5.3338,
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                    "spans": [
                        {
                            "offset": 58433,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "crab ages 1 and 2 were estimated,",
                    "polygon": [
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                        6.8189,
                        5.3195,
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                    ],
                    "spans": [
                        {
                            "offset": 58467,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "particularly for age-1 crab from",
                    "polygon": [
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                        6.9858,
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                    ],
                    "spans": [
                        {
                            "offset": 58501,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "1984 to 1985 and age-2 crab from",
                    "polygon": [
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                        7.1527,
                        5.3195,
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                    ],
                    "spans": [
                        {
                            "offset": 58534,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "1985 to 1986. A large recruitment",
                    "polygon": [
                        3.2651,
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                        5.329,
                        7.3148,
                        5.329,
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                        3.2651,
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                    ],
                    "spans": [
                        {
                            "offset": 58567,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "of snow crab possibly occurred in",
                    "polygon": [
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                        7.4817,
                        5.3385,
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                    ],
                    "spans": [
                        {
                            "offset": 58601,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "1983 or 1984 and the large natural",
                    "polygon": [
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                        5.3242,
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                        3.2651,
                        7.806
                    ],
                    "spans": [
                        {
                            "offset": 58635,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "mortality coefficients estimated",
                    "polygon": [
                        3.2603,
                        7.825,
                        5.3338,
                        7.8155,
                        5.3338,
                        7.9681,
                        3.2603,
                        7.9776
                    ],
                    "spans": [
                        {
                            "offset": 58670,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "from groundfish predation data",
                    "polygon": [
                        3.2603,
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                        5.3338,
                        7.9872,
                        5.3338,
                        8.1445,
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                    ],
                    "spans": [
                        {
                            "offset": 58703,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "show larger than average natural",
                    "polygon": [
                        3.2651,
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                        5.3338,
                        8.1541,
                        5.3338,
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                        3.2651,
                        8.3162
                    ],
                    "spans": [
                        {
                            "offset": 58734,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "mortality at age for the 1983 year",
                    "polygon": [
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                        8.3162,
                        5.329,
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                    ],
                    "spans": [
                        {
                            "offset": 58767,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "class. Larger mortality at age for",
                    "polygon": [
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                        8.4926,
                        5.3338,
                        8.65,
                        3.2556,
                        8.65
                    ],
                    "spans": [
                        {
                            "offset": 58802,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "Tanner crab was noted at age 0 for",
                    "polygon": [
                        3.2603,
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                        8.6595,
                        5.3338,
                        8.8121,
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                    ],
                    "spans": [
                        {
                            "offset": 58837,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "the 1984 year class, which was",
                    "polygon": [
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                        5.3338,
                        8.979,
                        3.2603,
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                    ],
                    "spans": [
                        {
                            "offset": 58872,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "also suspected to be above aver-",
                    "polygon": [
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                        8.9885,
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                    ],
                    "spans": [
                        {
                            "offset": 58903,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "age. Finally, natural mortality coef-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 58936,
                            "length": 37
                        }
                    ]
                },
                {
                    "content": "ficients for the 1985 year class of",
                    "polygon": [
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                        5.3433,
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                    ],
                    "spans": [
                        {
                            "offset": 58974,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "walleye pollock are larger at age",
                    "polygon": [
                        3.2603,
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                        5.3385,
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                    ],
                    "spans": [
                        {
                            "offset": 59010,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "than for adjacent year classes.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 59044,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "The 1985 year class was more",
                    "polygon": [
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                        5.3311,
                        7.5502,
                        5.479,
                        5.4529,
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                    ],
                    "spans": [
                        {
                            "offset": 59076,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "abundant than the 1986 to 1989",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 59105,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "year classes at age 1, but later",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 59136,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "proved to be about the same size",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 59169,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "as the 1986 and 1987 year classes",
                    "polygon": [
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                        7.5502,
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                    ],
                    "spans": [
                        {
                            "offset": 59202,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "at age 3. It appears that differential",
                    "polygon": [
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                        7.5407,
                        6.1513,
                        7.5407,
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                    ],
                    "spans": [
                        {
                            "offset": 59236,
                            "length": 38
                        }
                    ]
                },
                {
                    "content": "predation by groundfish on the",
                    "polygon": [
                        5.4625,
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                        7.555,
                        6.3182,
                        7.555,
                        6.4708,
                        5.4625,
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                    "spans": [
                        {
                            "offset": 59275,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "1985 year class from age 0 to 2",
                    "polygon": [
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                        7.5455,
                        6.4851,
                        7.5502,
                        6.6377,
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                    ],
                    "spans": [
                        {
                            "offset": 59306,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "may have reduced the relative",
                    "polygon": [
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                        7.555,
                        6.6472,
                        7.555,
                        6.7998,
                        5.472,
                        6.8094
                    ],
                    "spans": [
                        {
                            "offset": 59338,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "abundance of this year class upon",
                    "polygon": [
                        5.4625,
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                        7.5502,
                        6.8237,
                        7.5455,
                        6.9715,
                        5.4625,
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                    ],
                    "spans": [
                        {
                            "offset": 59368,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "recruitment to the fishery.",
                    "polygon": [
                        5.472,
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                        7.0211,
                        6.9858,
                        7.0211,
                        7.1336,
                        5.472,
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                    ],
                    "spans": [
                        {
                            "offset": 59402,
                            "length": 27
                        }
                    ]
                },
                {
                    "content": "Bering Sea flatfish food habits",
                    "polygon": [
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                        7.31,
                        7.4501,
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                    "spans": [
                        {
                            "offset": 59430,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "study completed",
                    "polygon": [
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                        6.5683,
                        7.4817,
                        6.5683,
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                    ],
                    "spans": [
                        {
                            "offset": 59462,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "Yellowfin sole, rock sole, and",
                    "polygon": [
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                        7.5598,
                        7.6343,
                        7.5598,
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                    ],
                    "spans": [
                        {
                            "offset": 59478,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "Alaska plaice are important fish",
                    "polygon": [
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                        7.5502,
                        7.8107,
                        7.5502,
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                    ],
                    "spans": [
                        {
                            "offset": 59509,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "species in the eastern Bering Sea",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 59542,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "ecosystem and fishery. These",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 59576,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "species appear to have very similar",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 59605,
                            "length": 35
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                    ]
                },
                {
                    "content": "feeding habits; however, detailed",
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                    "content": "2.66",
                    "polygon": [
                        2.8123,
                        4.9306,
                        3.227,
                        4.9354,
                        3.227,
                        5.0927,
                        2.8075,
                        5.0879
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                    "spans": [
                        {
                            "offset": 60419,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.93",
                    "polygon": [
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                        4.9497,
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                    "spans": [
                        {
                            "offset": 60424,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1.68",
                    "polygon": [
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                        4.9592,
                        5.4148,
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                        {
                            "offset": 60429,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.94",
                    "polygon": [
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                        4.9592,
                        6.5159,
                        4.964,
                        6.5159,
                        5.107,
                        6.1107,
                        5.107
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                    "spans": [
                        {
                            "offset": 60434,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1.45",
                    "polygon": [
                        7.1308,
                        4.9687,
                        7.5312,
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                        {
                            "offset": 60439,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "Walleye pollock",
                    "polygon": [
                        1.0057,
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                    "spans": [
                        {
                            "offset": 60444,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "0",
                    "polygon": [
                        1.1249,
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                        1.1154,
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                    "spans": [
                        {
                            "offset": 60460,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "*",
                    "polygon": [
                        1.9257,
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                        2.002,
                        5.6125,
                        2.002,
                        5.7031,
                        1.9209,
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                    "spans": [
                        {
                            "offset": 60462,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "3.19",
                    "polygon": [
                        2.8218,
                        5.6125,
                        3.2174,
                        5.6125,
                        3.2174,
                        5.746,
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                    "spans": [
                        {
                            "offset": 60464,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2.67",
                    "polygon": [
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                        4.3137,
                        5.622,
                        4.3137,
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                    "spans": [
                        {
                            "offset": 60469,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2.75",
                    "polygon": [
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                        5.6268,
                        5.41,
                        5.6268,
                        5.41,
                        5.7555,
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                    "spans": [
                        {
                            "offset": 60474,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 60479,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "*",
                    "polygon": [
                        1.9305,
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                        2.0067,
                        5.7746,
                        2.002,
                        5.8604,
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                    "spans": [
                        {
                            "offset": 60481,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "1.25",
                    "polygon": [
                        2.8266,
                        5.7698,
                        3.227,
                        5.7698,
                        3.227,
                        5.9129,
                        2.8266,
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                    "spans": [
                        {
                            "offset": 60483,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1.88",
                    "polygon": [
                        3.9229,
                        5.7698,
                        4.309,
                        5.7698,
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                    "spans": [
                        {
                            "offset": 60488,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1.13",
                    "polygon": [
                        5.0192,
                        5.7937,
                        5.4148,
                        5.7937,
                        5.4148,
                        5.9224,
                        5.0192,
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                    "spans": [
                        {
                            "offset": 60493,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "1.18",
                    "polygon": [
                        6.1203,
                        5.7937,
                        6.5206,
                        5.7937,
                        6.5159,
                        5.9367,
                        6.1203,
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                    "spans": [
                        {
                            "offset": 60498,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "2",
                    "polygon": [
                        1.1249,
                        5.9367,
                        1.2059,
                        5.9367,
                        1.2012,
                        6.0512,
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                    "spans": [
                        {
                            "offset": 60503,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "*",
                    "polygon": [
                        1.9352,
                        5.9367,
                        2.0115,
                        5.9415,
                        2.0115,
                        6.0273,
                        1.9257,
                        6.0226
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                    "spans": [
                        {
                            "offset": 60505,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "0.17",
                    "polygon": [
                        2.8218,
                        5.9367,
                        3.2174,
                        5.932,
                        3.2174,
                        6.0702,
                        2.8218,
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                    "spans": [
                        {
                            "offset": 60507,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.10",
                    "polygon": [
                        3.9086,
                        5.9415,
                        4.3137,
                        5.9415,
                        4.309,
                        6.0846,
                        3.9086,
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                    "spans": [
                        {
                            "offset": 60512,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.31",
                    "polygon": [
                        5.0144,
                        5.951,
                        5.41,
                        5.951,
                        5.4053,
                        6.0893,
                        5.0096,
                        6.0846
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                    "spans": [
                        {
                            "offset": 60517,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.16",
                    "polygon": [
                        6.1107,
                        5.9558,
                        6.5159,
                        5.9606,
                        6.5111,
                        6.0989,
                        6.1107,
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                    ],
                    "spans": [
                        {
                            "offset": 60522,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "0.10",
                    "polygon": [
                        7.1117,
                        5.9606,
                        7.5264,
                        5.9606,
                        7.5216,
                        6.1036,
                        7.1117,
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                    "spans": [
                        {
                            "offset": 60527,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "* Mortality coefficients were not estimated for 1984 because",
                    "polygon": [
                        1.0153,
                        6.4183,
                        7.0259,
                        6.4565,
                        7.0259,
                        6.6091,
                        1.0153,
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                    ],
                    "spans": [
                        {
                            "offset": 60532,
                            "length": 60
                        }
                    ]
                },
                {
                    "content": "pollock cannibalism estimate was not available for that year.",
                    "polygon": [
                        1.2965,
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                        7.412,
                        6.7903,
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                    "spans": [
                        {
                            "offset": 60593,
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                        }
                    ]
                },
                {
                    "content": "88. Stomach contents were iden-",
                    "polygon": [
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                        3.1126,
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                        6.9858,
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                    "spans": [
                        {
                            "offset": 60655,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "tified to the lowest practical taxon.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 60687,
                            "length": 37
                        }
                    ]
                },
                {
                    "content": "Gape widths and stomach and in-",
                    "polygon": [
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                        7.167,
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                    "spans": [
                        {
                            "offset": 60725,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "testine lengths were measured",
                    "polygon": [
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                        7.3387,
                        3.0744,
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                    "spans": [
                        {
                            "offset": 60757,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "and related to food habits.",
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                    "spans": [
                        {
                            "offset": 60787,
                            "length": 27
                        }
                    ]
                },
                {
                    "content": "Analysis showed that yellowfin",
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                        7.6629,
                        3.0744,
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                    "spans": [
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                            "offset": 60815,
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                        }
                    ]
                },
                {
                    "content": "sole had the broadest diet of the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 60846,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "three species, consuming",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 60880,
                            "length": 24
                        }
                    ]
                },
                {
                    "content": "benthopelagic prey such as clams,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 60905,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "gammarid amphipods, and poly-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 60939,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "chaetes. Seasonal variation was",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 60969,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "seen in the diet of yellowfin sole as",
                    "polygon": [
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                        {
                            "offset": 61001,
                            "length": 37
                        }
                    ]
                },
                {
                    "content": "they migrated throughout the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61039,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "eastern Bering Sea. Rock sole pri-",
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                    "spans": [
                        {
                            "offset": 61068,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "marily consumed polychaetes,",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61103,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "gammarid amphipods and other",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 61132,
                            "length": 28
                        }
                    ]
                },
                {
                    "content": "marine worms (sipunculans,",
                    "polygon": [
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                        3.0792,
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                    "spans": [
                        {
                            "offset": 61161,
                            "length": 26
                        }
                    ]
                },
                {
                    "content": "echiurids). Alaska plaice exhibited",
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                        3.0649,
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                        {
                            "offset": 61188,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "the narrowest diet, consisting of",
                    "polygon": [
                        3.0554,
                        6.8427,
                        5.2909,
                        6.857,
                        5.2909,
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                    "spans": [
                        {
                            "offset": 61224,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "polychaetes, and other marine",
                    "polygon": [
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                    "spans": [
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                            "offset": 61258,
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                    ]
                },
                {
                    "content": "worms almost exclusively. Little",
                    "polygon": [
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                        7.1813,
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                    "spans": [
                        {
                            "offset": 61288,
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                        }
                    ]
                },
                {
                    "content": "variation was seen in the diet with",
                    "polygon": [
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                        5.2861,
                        7.3434,
                        5.2861,
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                        3.2079,
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                    "spans": [
                        {
                            "offset": 61321,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "respect to predator size, year of",
                    "polygon": [
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                        5.3004,
                        7.5103,
                        5.2956,
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                    "spans": [
                        {
                            "offset": 61357,
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                        }
                    ]
                },
                {
                    "content": "collection, depth of collection and",
                    "polygon": [
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                        5.2909,
                        7.6724,
                        5.2909,
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                    "spans": [
                        {
                            "offset": 61391,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "time of day for any of the species.",
                    "polygon": [
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                        5.2718,
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                        5.2718,
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                    ],
                    "spans": [
                        {
                            "offset": 61427,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "Yellowfin sole was determined",
                    "polygon": [
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                        8.0015,
                        5.2909,
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                    "spans": [
                        {
                            "offset": 61463,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "to have the largest gape width of",
                    "polygon": [
                        3.2031,
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                        5.2956,
                        8.3257,
                        3.2031,
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                    ],
                    "spans": [
                        {
                            "offset": 61493,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "the three, rock sole the smallest.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 61527,
                            "length": 34
                        }
                    ]
                },
                {
                    "content": "Yellowfin sole had the shortest di-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61562,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "gestive tract, Alaska plaice the",
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                        5.2956,
                        8.8312,
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                    "spans": [
                        {
                            "offset": 61598,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "longest. The gross feeding mor-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61631,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "phology of the these three fish spe-",
                    "polygon": [
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                    "spans": [
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                            "length": 36
                        }
                    ]
                },
                {
                    "content": "cies was very well suited for the",
                    "polygon": [
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                        9.1745,
                        5.2909,
                        9.1745,
                        5.2909,
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                    "spans": [
                        {
                            "offset": 61700,
                            "length": 33
                        }
                    ]
                },
                {
                    "content": "benthic-oriented invertebrate pre-",
                    "polygon": [
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                        {
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                        }
                    ]
                },
                {
                    "content": "dation.",
                    "polygon": [
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                            "length": 7
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                    ]
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                            "offset": 62588,
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                    ]
                },
                {
                    "content": "ters. Only one of the respiration",
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                },
                {
                    "content": "parameters produced a larger than",
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                },
                {
                    "content": "10% deviation when perturbed by",
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                    ]
                },
                {
                    "content": "10%. This was expected since this",
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                },
                {
                    "content": "parameter is an exponent to",
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                },
                {
                    "content": "weight in the maximum respiration",
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                },
                {
                    "content": "equation and would be expected",
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                            "offset": 62818,
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                },
                {
                    "content": "to have a nonlinear effect on model",
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                            "offset": 62849,
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                    ]
                },
                {
                    "content": "outputs. The model will be used to",
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                        {
                            "offset": 62885,
                            "length": 34
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                    ]
                },
                {
                    "content": "better define seasonal, size, and",
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                            "offset": 62920,
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                    ]
                },
                {
                    "content": "interannual changes in daily ration",
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                    "spans": [
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                            "offset": 62954,
                            "length": 35
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                    ]
                },
                {
                    "content": "to improve population consump-",
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                    "spans": [
                        {
                            "offset": 62990,
                            "length": 30
                        }
                    ]
                },
                {
                    "content": "tion estimates by walleye pollock.",
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                        {
                            "offset": 63021,
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                    ]
                },
                {
                    "content": "The preceding information was",
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                        4.7237,
                        3.0792,
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                        1.1726,
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                    "spans": [
                        {
                            "offset": 63056,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "provided by PATRICIA LIVINGSTON.",
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                    "spans": [
                        {
                            "offset": 63086,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "U.S. Fisheries Observer",
                    "polygon": [
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                    "spans": [
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                            "offset": 63119,
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                    ]
                },
                {
                    "content": "Program",
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                    "spans": [
                        {
                            "offset": 63143,
                            "length": 7
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                    ]
                },
                {
                    "content": "Groundfish observer training",
                    "polygon": [
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                        {
                            "offset": 63151,
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                        }
                    ]
                },
                {
                    "content": "and deployments",
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                        {
                            "offset": 63180,
                            "length": 15
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                    ]
                },
                {
                    "content": "Through December 1992, the",
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                            "offset": 63196,
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                    ]
                },
                {
                    "content": "Observer Program trained 427 in-",
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                        6.2013,
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                    "spans": [
                        {
                            "offset": 63223,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "dividual observers for deployment",
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                            "offset": 63256,
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                    ]
                },
                {
                    "content": "to domestic fishing vessels and",
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                            "offset": 63290,
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                    ]
                },
                {
                    "content": "processing plants and ships. An",
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                    ]
                },
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                    "content": "additional 18 observers were",
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                },
                {
                    "content": "trained by the University of Alaska",
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                    ]
                },
                {
                    "content": "Anchorage through a pilot training",
                    "polygon": [
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                            "offset": 63419,
                            "length": 34
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                    ]
                },
                {
                    "content": "program funded by NMFS through",
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                    ]
                },
                {
                    "content": "the Alaska Sea Grant Program.",
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                    ]
                },
                {
                    "content": "The 445 observers made 681 ob-",
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                },
                {
                    "content": "server trips. Observers sampled",
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                },
                {
                    "content": "aboard 397 different fishing ves-",
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                    ]
                },
                {
                    "content": "sels and in 32 different processing",
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                },
                {
                    "content": "plants. The majority of observer",
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                },
                {
                    "content": "deployments were made in",
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                },
                {
                    "content": "groundfish fisheries off Alaska",
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                },
                {
                    "content": "where observer coverage aboard",
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                },
                {
                    "content": "vessels in the groundfish fishery is",
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                },
                {
                    "content": "mandatory. Some observer de-",
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                    ]
                },
                {
                    "content": "ployments (roughly 3%-5% of the",
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                            "offset": 63835,
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                    ]
                },
                {
                    "content": "total number of deployments)",
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                            "offset": 63867,
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                    ]
                },
                {
                    "content": "were made on catcher-processor",
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                            "offset": 63896,
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                },
                {
                    "content": "and mothership vessels in the Pa-",
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                            "offset": 63927,
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                    ]
                },
                {
                    "content": "cific whiting fishery off the north-",
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                },
                {
                    "content": "west coast of the United States.",
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                },
                {
                    "content": "Vessels in the Pacific whiting fish-",
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                },
                {
                    "content": "ery carried observers voluntarily.",
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                    ]
                },
                {
                    "content": "Seventy percent of all observer de-",
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                },
                {
                    "content": "ployments in 1992 were made by",
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                            "offset": 64139,
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                    ]
                },
                {
                    "content": "observers who had made previous",
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                    ]
                },
                {
                    "content": "observer trips for the program on",
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                    ]
                },
                {
                    "content": "domestic vessels.",
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                            "offset": 64236,
                            "length": 17
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                    ]
                },
                {
                    "content": "NPFMC approves changes to",
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                            "offset": 64254,
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                },
                {
                    "content": "groundfish observer plan for",
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                },
                {
                    "content": "1993",
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                },
                {
                    "content": "The NPFMC approved a num-",
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                },
                {
                    "content": "ber of changes to the Observer",
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                },
                {
                    "content": "Plan for groundfish fisheries in the",
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                },
                {
                    "content": "BS-Al and GOA regions for 1993.",
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                {
                    "content": "The approved changes include:",
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                },
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                    "content": "a. A change in the definition of",
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                    "content": "centage of actual fishing days.",
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                    "content": "require that vessels take an ob-",
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                    "content": "server on at least one fishing trip in",
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                    "content": "each target fishery fished as part of",
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                    "content": "the requirement for 30% coverage",
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                    "content": "of each vessel's fishing days in the",
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                    "content": "quarter.",
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                    "content": "sablefish longline fishery take an",
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                    "content": "observer on at least one fishing trip",
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                    "content": "in the eastern regulatory area of",
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                    "content": "the GOA as part of their require-",
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                    "content": "ment for 30% coverage of each",
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                    "content": "vessel's fishing days during the",
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                    "content": "quarter.",
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                    "content": "server coverage to 30% observer",
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                    "content": "coverage by quarter for vessels",
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                    "content": "125 ft LOA and longer which fish",
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                    "content": "with pots or traps.",
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                    "content": "interest standards for observers",
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                    "content": "and observer contractors.",
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                    "content": "The changes will be im-",
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                    "content": "Groundfish Fishery Management",
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                {
                    "content": "High-seas driftnet observer",
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                    "content": "program",
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                    "content": "Division.",
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                    "content": "strongly supports PICES and its",
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                    "spans": [
                        {
                            "offset": 67679,
                            "length": 31
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                    ]
                },
                {
                    "content": "links to other organizations such",
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                        3.0345,
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                        {
                            "offset": 67711,
                            "length": 33
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                },
                {
                    "content": "as GOOS and FOCI.",
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                            "offset": 67745,
                            "length": 17
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                    ]
                },
                {
                    "content": "Other Center personnel who",
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                    "spans": [
                        {
                            "offset": 67763,
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                },
                {
                    "content": "gave presentations at the sympo-",
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                    "spans": [
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                            "offset": 67790,
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                {
                    "content": "sium included Richard Brodeur -",
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                    "spans": [
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                            "offset": 67823,
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                },
                {
                    "content": "\"Interdecadal Variability in Pelagic",
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                },
                {
                    "content": "Nekton Biomass in the Central",
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                    ]
                },
                {
                    "content": "Subarctic Domain of the Northeast",
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                    "spans": [
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                            "offset": 67922,
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                },
                {
                    "content": "Pacific Ocean\"; Jack Helle - \"Influ-",
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                            "offset": 67956,
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                },
                {
                    "content": "ence of Climate Change on Size",
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                            "offset": 67993,
                            "length": 30
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                },
                {
                    "content": "and Age-at-Maturity of Some Pop-",
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                            "offset": 68024,
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                {
                    "content": "ulations of Chum Salmon in North",
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                            "offset": 68057,
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                },
                {
                    "content": "America, 1972-91\"; (Helle also",
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                            "offset": 68090,
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                },
                {
                    "content": "gave a poster session on the same",
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                            "offset": 68121,
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                    ]
                },
                {
                    "content": "subject); Steve Ignell - \"Variability",
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                    "spans": [
                        {
                            "offset": 68155,
                            "length": 37
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                    ]
                },
                {
                    "content": "in Ocean Temperatures and the",
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                    "spans": [
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                            "offset": 68193,
                            "length": 29
                        }
                    ]
                },
                {
                    "content": "Ranges of Flying Squid and Sal-",
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                    "spans": [
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                            "offset": 68223,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "monids of the Central North Pacific",
                    "polygon": [
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                            "offset": 68255,
                            "length": 35
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                    ]
                },
                {
                    "content": "Ocean, 1978-1990\"; Gary Stauffer",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 68291,
                            "length": 32
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                    ]
                },
                {
                    "content": "and Bernard Megrey - \"An Ex-",
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                        5.2653,
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                    "spans": [
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                            "offset": 68324,
                            "length": 28
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                    ]
                },
                {
                    "content": "ploratory Analysis of Associations",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 68353,
                            "length": 34
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                    ]
                },
                {
                    "content": "Between Biotic and Abiotic Fac-",
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                    "spans": [
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                            "offset": 68388,
                            "length": 31
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                    ]
                },
                {
                    "content": "tors and Year Class Strength of",
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                    "spans": [
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                            "offset": 68420,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "Gulf of Alaska Walleye Pollock\";",
                    "polygon": [
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                    "spans": [
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                            "offset": 68452,
                            "length": 32
                        }
                    ]
                },
                {
                    "content": "Brad Stevens - the poster session",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 68485,
                            "length": 33
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                    ]
                },
                {
                    "content": "\"Effects of Temperature on Growth",
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                    "spans": [
                        {
                            "offset": 68519,
                            "length": 33
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                    ]
                },
                {
                    "content": "and Recruitment of King Crab,",
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                    "spans": [
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                            "offset": 68553,
                            "length": 29
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                    ]
                },
                {
                    "content": "Paralithodes camtschtaticus, and",
                    "polygon": [
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                            "offset": 68583,
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                },
                {
                    "content": "Tanner crab, Chionoecetes",
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                    "spans": [
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                            "offset": 68616,
                            "length": 25
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                {
                    "content": "bairdi\"; Sidney Taylor and Joyce",
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                {
                    "content": "Landingham - Effects of Estua-",
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                    "spans": [
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                            "offset": 68675,
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                {
                    "content": "rine Temperatures, Zooplankton",
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                },
                {
                    "content": "Populations, Release Time and",
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                            "offset": 68737,
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                },
                {
                    "content": "Diet, Intra-Annual Survival, and",
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                    "spans": [
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                },
                {
                    "content": "Size and Age at Maturity of 1980",
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                    "spans": [
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                            "offset": 68800,
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                },
                {
                    "content": "Brood Chum Salmon at Auke",
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                    "spans": [
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                            "offset": 68833,
                            "length": 25
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                },
                {
                    "content": "Creek, Alaska\"; Taylor - \"Intra-An-",
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                            "offset": 68859,
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                },
                {
                    "content": "nual Survival and Run Timing of",
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                {
                    "content": "Four Broods of Pink Salmon at",
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                {
                    "content": "Auke Creek, Alaska\"; Frank",
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                },
                {
                    "content": "Thrower - \"Short-term Rearing of",
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                            "offset": 68984,
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                },
                {
                    "content": "Chum Salmon Fry: Effect on Sur-",
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                            "offset": 69017,
                            "length": 31
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                },
                {
                    "content": "vival, Age, Distribution, and Size of",
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                    "spans": [
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                            "offset": 69049,
                            "length": 37
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                },
                {
                    "content": "Returning Adults\"; and Anne York",
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                            "offset": 69087,
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                },
                {
                    "content": "- \"The Relationship Between the",
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                },
                {
                    "content": "Southern Hemisphere Oscillation",
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                    "spans": [
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                    "content": "Index and Survival of Juvenile",
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                    "content": "Northern Fur Seals From the Prib-",
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                },
                {
                    "content": "ilof Islands.\" William Heard served",
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                            "offset": 69249,
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                {
                    "content": "as moderator of the Discussion",
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                {
                    "content": "Session: Small Scale Perspec-",
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                            "offset": 69316,
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                    "content": "tives. James Ingraham presented",
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                    "spans": [
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                            "offset": 69346,
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                },
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                    "content": "video computer simulations of",
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                    ]
                },
                {
                    "content": "sockeye salmon migrating at vari-",
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                    ]
                },
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                    "content": "ous compass headings and swim-",
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                    "content": "ming speeds during their return to",
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                },
                {
                    "content": "the Fraser River for 1982 and 1983.",
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                    "content": "(The study resulted from coopera-",
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                    "content": "tive research with the University of",
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                },
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                    "content": "BRUCE WING assisted the",
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                    "content": "invertebrates.",
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                    "content": "dent from Petersburg, Alaska, as",
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                    "content": "visory Committee on Wetlands.",
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                    "content": "Creek, a highly degraded stream in",
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                    "content": "the Mendenhall Valley in Juneau.",
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                    "content": "Carolina, to meet with representa-",
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                    "content": "tives from the Beaufort Laboratory",
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                    "content": "document describing the Restora-",
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                    "content": "tion Center's \"Habitat Restoration",
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                    "content": "Alaska Fairbanks, Juneau Center",
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                    "content": "for Fisheries and Ocean Sciences,",
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                    "content": "peror Seamount region.",
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                    "content": "Hale Kohala-House of the Whale, a",
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                    "content": "new whale museum in Lahaina,",
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                    "content": "tion. DALE RICE provided scien-",
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                    "content": "tific advice for a series of signs to",
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                    "content": "BILL HIGH attended a meeting of",
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                    "content": "underwater sound transducers.",
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                    "content": "tian Basin with the Center's RACE",
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                    "content": "Division.",
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                    "content": "Bank in China to review the techni-",
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                    "content": "cal merits of a fisheries develop-",
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                    "content": "Fish? - A Resource Issue.\"",
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                    "content": "PRESENTATIONS",
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                    "content": "NMFS Aquaculture Task Force",
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                    "content": "Maryland.",
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                    "content": "mittee Meeting held in Bellevue,",
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                    "content": "fish stocks.",
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                    "content": "meeting of the NPFMC Bycatch",
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                    "content": "tended the NPFMC Comprehens-",
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                    "content": "October-November-December 1992",
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                    "content": "Cap Committee in Anchorage.",
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                    "content": "Fisheries.\" As chairman of the",
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                    "content": "ing in Seattle where he presented",
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                    "content": "material to the Scientific and Sta-",
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                    "content": "tistical Committee, the Advisory",
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                    "content": "Panel, and the Groundfish Plan",
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                    "content": "blefish ITQs.",
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                    "content": "the PFMC in Portland, Oregon.",
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                    "content": "the November meeting of the",
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                    "content": "PFMC in Seattle.",
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                    "content": "KARINEN presented the paper,",
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                    "content": "ments and Mussels from Prince",
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                    "content": "William Sound, Alaska, 1977-1980:",
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                    "content": "Characterization and Probable",
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                    "content": "Sources\", at the Arctic Science",
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                    "content": "Conference held in Valdez, Alaska.",
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                    "content": "MICHAEL MURPHY presented",
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                    "content": "Situk River, Alaska, to Predict Ef-",
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                    "content": "fects of Glacial Flooding\" at the",
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                    "content": "shop in Boise, Idaho, sponsored",
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                    "content": "by the American Fisheries Society.",
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                    "content": "At the University of Alaska Fair-",
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                    "content": "banks, Juneau Center for Fisheries",
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                    "content": "and Ocean Sciences, MICHAEL",
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                    "content": "the Odds of Catching Fish With",
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                    "content": "Longline Gear\"; STANLEY CARL-",
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                    "content": "Nekton Community Around the",
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                    "content": "Subarctic Frontal Zone\"; and",
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                    "content": "\"Do We Have the Scientific Basis",
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                    "content": "for Management at the Ecosystem",
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                    "content": "GREENOUGH met with Dr. Valeriy",
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                    "content": "Kyoto and Choshi, Japan.",
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                    "content": "rine Research (Norway), Univer-",
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                    "content": "tic Marine Living Resources",
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                    "content": "in Washington, D.C., to discuss the",
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                    "content": "U.S .- Antarctic crab fishery.",
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                    "content": "meeting.",
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                    "content": "ROBERT OTTO attended meetings",
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                    "content": "of the Working Group on Fish Stock",
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                    "content": "Assessment and the Scientific",
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                    "content": "Committee of the CCAMLR in Ho-",
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                    "content": "bart, Australia, where he presented",
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                    "content": "Crab Fishing in the Antarctic Dur-",
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                    "content": "ing 1992 (CCAMLR Area 48).\"",
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                    "content": "cioeconomics and Allocation at",
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                    "content": "ploited Fish Populations; BER-",
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                    "content": "the Atka Mackerel Resource of the",
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                    "content": "Aleutian Islands\"; LOWE also",
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                    "content": "served as rapporteur for Session I:",
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                    "content": "agement Process; THOMPSON",
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                    "content": "presented \"Managing Bycatch in",
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                    "content": "Inter-jurisdictional Fisheries\";",
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                    "content": "tural Time Series Models and the",
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                    "content": "quences of Fishery Actions\"; SIGLER",
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                    "content": "blefish in the Gulf of Alaska\"; and",
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                    "content": "of Alternative Harvest Strategies for",
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                    "content": "Gulf of Alaska Pollock\"; MEGREY",
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                    "content": "also presented a Fisheries-Ocean-",
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                    "content": "ography Coordinated Investiga-",
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                    "content": "tions (FOCI) seminar entitled",
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                    "content": "of Gulf of Alaska Pollock and a Pro-",
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                    "content": "posal for Recruitment Prediction.\"",
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                    "content": "ary Research in Alaska: NOAA's",
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                    "content": "Fisheries-Oceanography Coordi-",
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                    "content": "nated Investigations\" at the 39th",
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                    "content": "Eastern Pacific Ocean Conference",
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                    "content": "at Mt. Hood, Oregon; NAPP also",
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                    "content": "in Primary and Secondary Produc-",
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                    "content": "tion: From Sunlight to Fish Food.\"",
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                    "content": "ance of Various Spatial and Tem-",
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                    "content": "poral Scales in the Interaction of",
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                    "content": "Juvenile Salmon and the Marine",
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                    "content": "ney, British Columbia, Canada;",
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                    "content": "Northern Gulf of Alaska\" with WIL-",
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                    "content": "and coauthored a poster entitled",
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                    "content": "Echo System to Detect Mesoscale",
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                    "content": "Features in the Ocean\" at the an-",
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                    "content": "nual CalCOFI meeting in Monte-",
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                    "content": "rey, California.",
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                    "content": "herring stocks; SHERYL COREY",
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                    "content": "gave a lecture on the types of fish-",
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                    "content": "ing vessels involved in Alaskan",
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                    "content": "fisheries and the role of the ob-",
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                    "content": "server program in collecting data",
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                    "content": "for management of these fisheries.",
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                    "content": "LOW attended a Seattle meeting of",
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                    "content": "the International Pacific Halibut Com-",
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                    "content": "mission to review the 1992 fishing",
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                    "content": "season and to plan for 1993.",
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                    "content": "METHOT",
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                    "content": "and",
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                    "content": "THOMAS",
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                    "content": "LOUGHLIN presented \"Marine",
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                    "content": "Mammals and Fisheries -- A Histor-",
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                    "content": "ical Perspective and a Focus for",
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                    "content": "ies, University of Washington.",
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                        }
                    ]
                },
                {
                    "content": "BRODEUR, R., and R.C. FRANCIS",
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                        {
                            "offset": 87481,
                            "length": 29
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                    ]
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                {
                    "content": "1992. Food consumption of juvenile coho",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 87511,
                            "length": 39
                        }
                    ]
                },
                {
                    "content": "(Oncorhynchus kisutch) and chinook salmon (O.",
                    "polygon": [
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                        4.1489,
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                    "spans": [
                        {
                            "offset": 87551,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "tshawytscha) on the continental shelf off Washington",
                    "polygon": [
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                    "spans": [
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                {
                    "content": "and Oregon. Can. J. Fish. Aquat. Sci. 49:1670-1685.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 87650,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "CROLL, D.A., M.K. NISHIGUCHI, and S. KAUPP.",
                    "polygon": [
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                        {
                            "offset": 87702,
                            "length": 43
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                    ]
                },
                {
                    "content": "1992. Pressure and lactate dehydrogenase func-",
                    "polygon": [
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                        4.9561,
                        4.1489,
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                    "spans": [
                        {
                            "offset": 87746,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "tion in diving mammals and birds. Physiol. Zool.",
                    "polygon": [
                        0.9883,
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                        0.9883,
                        5.276
                    ],
                    "spans": [
                        {
                            "offset": 87793,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "65:1022-1027.",
                    "polygon": [
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                        1.8763,
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                        5.424
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                    "spans": [
                        {
                            "offset": 87842,
                            "length": 13
                        }
                    ]
                },
                {
                    "content": "CROLL, D.A., A.J. GASTON, A.E. BURGER, and D.",
                    "polygon": [
                        0.9931,
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                        4.1441,
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                    "spans": [
                        {
                            "offset": 87856,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "KONNOFF.",
                    "polygon": [
                        1.0026,
                        5.7917,
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                        5.7917,
                        1.7044,
                        5.9158,
                        1.0026,
                        5.9158
                    ],
                    "spans": [
                        {
                            "offset": 87902,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "1992. Foraging behavior and physiological adap-",
                    "polygon": [
                        1.122,
                        5.9493,
                        4.1489,
                        5.9445,
                        4.1489,
                        6.102,
                        1.122,
                        6.102
                    ],
                    "spans": [
                        {
                            "offset": 87911,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "tation for diving in thick-billed murres. Ecology.",
                    "polygon": [
                        0.9931,
                        6.1164,
                        4.1489,
                        6.1164,
                        4.1489,
                        6.2644,
                        0.9931,
                        6.2692
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                    "spans": [
                        {
                            "offset": 87959,
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                },
                {
                    "content": "73:344-356.",
                    "polygon": [
                        0.9931,
                        6.2883,
                        1.7188,
                        6.2883,
                        1.7188,
                        6.4219,
                        0.9931,
                        6.4219
                    ],
                    "spans": [
                        {
                            "offset": 88010,
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                        }
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                },
                {
                    "content": "DELONG, R.L., E.F. EDWARDS, P. WADE, and J.E.",
                    "polygon": [
                        0.9931,
                        6.6082,
                        4.1489,
                        6.6034,
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                        6.7514,
                        0.9931,
                        6.7562
                    ],
                    "spans": [
                        {
                            "offset": 88022,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "SISSON.",
                    "polygon": [
                        1.0026,
                        6.78,
                        1.5469,
                        6.78,
                        1.5469,
                        6.9137,
                        1.0026,
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                    "spans": [
                        {
                            "offset": 88068,
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                        }
                    ]
                },
                {
                    "content": "1992. Documenting migrations of northern ele-",
                    "polygon": [
                        1.1697,
                        6.9472,
                        4.1632,
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                        7.0952,
                        1.1697,
                        7.0952
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                },
                {
                    "content": "phant seals using day length. Mar. Mammal Sci.",
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                        7.2718
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                    "spans": [
                        {
                            "offset": 88122,
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                },
                {
                    "content": "8:155-159.",
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                        1.0026,
                        7.2862,
                        1.6376,
                        7.2909,
                        1.6376,
                        7.4151,
                        1.0026,
                        7.4103
                    ],
                    "spans": [
                        {
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                            "length": 10
                        }
                    ]
                },
                {
                    "content": "EBERHARDT, L.E., and J.M. BREIWICK.",
                    "polygon": [
                        1.0026,
                        7.6013,
                        3.4375,
                        7.5965,
                        3.4375,
                        7.7589,
                        1.0026,
                        7.7636
                    ],
                    "spans": [
                        {
                            "offset": 88180,
                            "length": 35
                        }
                    ]
                },
                {
                    "content": "1992. Impact of recent population data on histori-",
                    "polygon": [
                        1.1267,
                        7.778,
                        4.1584,
                        7.7732,
                        4.1584,
                        7.926,
                        1.1267,
                        7.9355
                    ],
                    "spans": [
                        {
                            "offset": 88216,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "cal population levels of bowhead whales inferred",
                    "polygon": [
                        1.0074,
                        7.9498,
                        4.1632,
                        7.9403,
                        4.1632,
                        8.0883,
                        1.0074,
                        8.1026
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                    "spans": [
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                },
                {
                    "content": "from simulation studies. Rep. Int. Whaling Comm.",
                    "polygon": [
                        1.0074,
                        8.1074,
                        4.1584,
                        8.1074,
                        4.1584,
                        8.265,
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                    ],
                    "spans": [
                        {
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                        1.0122,
                        8.2888,
                        1.7235,
                        8.2888,
                        1.7235,
                        8.4178,
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                        8.4178
                    ],
                    "spans": [
                        {
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                            "length": 11
                        }
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                },
                {
                    "content": "HOLLOWED, A.B.",
                    "polygon": [
                        1.0074,
                        8.6088,
                        2.115,
                        8.6088,
                        2.115,
                        8.7615,
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                    "spans": [
                        {
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                    ]
                },
                {
                    "content": "1992. Spatial and temporal distributions of Pacific",
                    "polygon": [
                        1.1267,
                        8.7806,
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                        8.9382
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                    "spans": [
                        {
                            "offset": 88392,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "hake, Merluccius productus, larvae and estimates of",
                    "polygon": [
                        1.0074,
                        8.9525,
                        4.1727,
                        8.943,
                        4.1727,
                        9.0958,
                        1.0074,
                        9.1053
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                    "spans": [
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                {
                    "content": "survival during early life stages. CalCOFI Rep. 33, p.",
                    "polygon": [
                        1.0122,
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                {
                    "content": "100-123.",
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                        1.0169,
                        9.2868,
                        1.5516,
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                    "spans": [
                        {
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                {
                    "content": "KIMURA, D.K.",
                    "polygon": [
                        4.378,
                        1.1746,
                        5.2279,
                        1.1698,
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                        1.3178
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                    "spans": [
                        {
                            "offset": 88560,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "1992. Symmetry and scale dependence in func-",
                    "polygon": [
                        4.526,
                        1.3321,
                        7.5243,
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                        1.4945
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                {
                    "content": "tional relationship regression. Syst. Biol. 41(2):233-",
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                        4.3733,
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                        1.6616
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                {
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                    "polygon": [
                        4.378,
                        1.6807,
                        4.6406,
                        1.6807,
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                        4.378,
                        1.8048
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                    "spans": [
                        {
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                },
                {
                    "content": "KIMURA, D.K.",
                    "polygon": [
                        4.3637,
                        1.991,
                        5.2231,
                        1.991,
                        5.2231,
                        2.1534,
                        4.3637,
                        2.1486
                    ],
                    "spans": [
                        {
                            "offset": 88678,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "1992. Functional comparative calibration using an",
                    "polygon": [
                        4.4926,
                        2.1629,
                        7.5291,
                        2.1677,
                        7.5291,
                        2.3205,
                        4.4926,
                        2.3205
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                            "length": 49
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                },
                {
                    "content": "EM algorithm. Biometrics 48(4):1263-1271.",
                    "polygon": [
                        4.378,
                        2.3348,
                        7.0135,
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                        2.4828,
                        4.378,
                        2.4876
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                    "spans": [
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                },
                {
                    "content": "KIYOTA, M., I.R. LOUGHLIN, N. BABA, M.",
                    "polygon": [
                        4.378,
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                        7.5291,
                        2.8123,
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                        2.8171
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                    "spans": [
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                },
                {
                    "content": "NAKAJIMA, and K. KOHYAMA.",
                    "polygon": [
                        4.378,
                        2.8314,
                        6.2639,
                        2.8266,
                        6.2639,
                        2.9746,
                        4.378,
                        2.9794
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                },
                {
                    "content": "1992. Use of a tileamine hydrochloride-zolazepam",
                    "polygon": [
                        4.4831,
                        2.9937,
                        7.5339,
                        2.9985,
                        7.5339,
                        3.1513,
                        4.4831,
                        3.1465
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                    "spans": [
                        {
                            "offset": 88848,
                            "length": 48
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                    ]
                },
                {
                    "content": "hydrochloride mixture as an immobilizing agent for",
                    "polygon": [
                        4.3733,
                        3.1656,
                        7.5291,
                        3.1608,
                        7.5291,
                        3.3136,
                        4.3733,
                        3.3184
                    ],
                    "spans": [
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                },
                {
                    "content": "northern fur seals (Callorhinus ursinus). Mar. Sci.",
                    "polygon": [
                        4.3733,
                        3.3327,
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                        3.3232,
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                    "spans": [
                        {
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                            "length": 51
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                {
                    "content": "(Japan). 32:1-7.",
                    "polygon": [
                        4.3828,
                        3.4998,
                        5.3806,
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                        5.3854,
                        3.6526,
                        4.3828,
                        3.6574
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                    "spans": [
                        {
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                            "length": 16
                        }
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                },
                {
                    "content": "KOSKI, K V.",
                    "polygon": [
                        4.378,
                        3.8245,
                        5.1037,
                        3.8245,
                        5.1037,
                        3.963,
                        4.378,
                        3.963
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                    "spans": [
                        {
                            "offset": 89017,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "1992. Restoring stream habitats affected by log-",
                    "polygon": [
                        4.526,
                        3.9916,
                        7.5291,
                        3.9869,
                        7.5291,
                        4.1397,
                        4.526,
                        4.1444
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                    "spans": [
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                            "length": 48
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                },
                {
                    "content": "ging activities. In G. W. Thayer (ed.), Restoring the",
                    "polygon": [
                        4.3733,
                        4.1587,
                        7.5339,
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                        4.378,
                        4.3211
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                },
                {
                    "content": "Nation's marine environment, p. 343-403. Maryland",
                    "polygon": [
                        4.378,
                        4.3211,
                        7.5339,
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                        4.4643,
                        4.378,
                        4.4691
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                    "spans": [
                        {
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                            "length": 49
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                },
                {
                    "content": "Sea Grant College Publ. UM-SG-TS-92-06. Maryland",
                    "polygon": [
                        4.378,
                        4.4834,
                        7.5291,
                        4.4787,
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                        4.378,
                        4.641
                    ],
                    "spans": [
                        {
                            "offset": 89182,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "Sea Grant College, Skinner Bldg., Univ. of Maryland,",
                    "polygon": [
                        4.378,
                        4.6458,
                        7.5195,
                        4.6458,
                        7.5195,
                        4.7986,
                        4.378,
                        4.8033
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                },
                {
                    "content": "College Park, MD 10742.",
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                        4.3876,
                        4.8177,
                        5.9249,
                        4.8129,
                        5.9249,
                        4.9609,
                        4.3876,
                        4.9704
                    ],
                    "spans": [
                        {
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                {
                    "content": "MAJLUF, P., and M.E. GOEBEL.",
                    "polygon": [
                        4.378,
                        5.1471,
                        6.3307,
                        5.1328,
                        6.3307,
                        5.2808,
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                        5.2951
                    ],
                    "spans": [
                        {
                            "offset": 89308,
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                },
                {
                    "content": "1992. The capture and handling of female South",
                    "polygon": [
                        4.5213,
                        5.3094,
                        7.5339,
                        5.2999,
                        7.5339,
                        5.4479,
                        4.5213,
                        5.4575
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                    "content": "American fur seals and their pups. Mar. Mammal Sci.",
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                        {
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                {
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                        4.3876,
                        5.6484,
                        5.0178,
                        5.6484,
                        5.0178,
                        5.7774,
                        4.3876,
                        5.7774
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                    "spans": [
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                {
                    "content": "McCONNAUGHEY, R.A., D.A. ARMSTRONG, B.M.",
                    "polygon": [
                        4.3876,
                        5.9636,
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                        5.9636,
                        7.5195,
                        6.1116,
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                        6.1211
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                        {
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                },
                {
                    "content": "HICKEY, and D.R. GUNDERSON.",
                    "polygon": [
                        4.3828,
                        6.1355,
                        6.4214,
                        6.1307,
                        6.4262,
                        6.2787,
                        4.3828,
                        6.2883
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                    "spans": [
                        {
                            "offset": 89488,
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                },
                {
                    "content": "1992. Juvenile Dungeness crab (Cancer magister)",
                    "polygon": [
                        4.4878,
                        6.3026,
                        7.5243,
                        6.3026,
                        7.5243,
                        6.4554,
                        4.4878,
                        6.4554
                    ],
                    "spans": [
                        {
                            "offset": 89516,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "recruitment variability and oceanic transport during",
                    "polygon": [
                        4.3876,
                        6.4745,
                        7.5386,
                        6.4697,
                        7.5386,
                        6.6225,
                        4.3876,
                        6.6225
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                    "spans": [
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                },
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                    "content": "the pelagic larval phase. Can. J. Fish. Aquat. Sci.",
                    "polygon": [
                        4.3828,
                        6.6416,
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                        6.6368,
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                            "length": 51
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                },
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                    "content": "49:2028-2044.",
                    "polygon": [
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                {
                    "content": "tain. Fish. Bull., U.S. 90:561-573.",
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                {
                    "content": "WITHROW, D., and R. ANGLISS.",
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                    "spans": [
                        {
                            "offset": 90387,
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                {
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                {
                    "content": "1989 and 1990. Rep. Int. Whaling Comm. 42:463-",
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                    "content": "467.",
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                {
                    "content": "WITHROW, D., R. BURKE Jr., L. JONES, and J.",
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                {
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                {
                    "content": "bowhead whale baleen plates used to estimate age.",
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                            "offset": 90639,
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                },
                {
                    "content": "Rep. Int. Whaling Comm. 42:469-473.",
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                {
                    "content": "TECHNICAL MEMORANDUMS1",
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                    "spans": [
                        {
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                        }
                    ]
                },
                {
                    "content": "GUTTORMSEN, M., R. NARITA, and J. BERGER.",
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                        {
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                    ]
                },
                {
                    "content": "1992. Summary of U. S. observer sampling of joint",
                    "polygon": [
                        1.0761,
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                        4.1236,
                        4.4956,
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                    "spans": [
                        {
                            "offset": 90790,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "venture fisheries in the Northeast Pacific Ocean and",
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                        4.1189,
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                    "spans": [
                        {
                            "offset": 90840,
                            "length": 52
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                    ]
                },
                {
                    "content": "eastern Bering Sea, 1990. U.S. Dep. Commer.,",
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                    "spans": [
                        {
                            "offset": 90893,
                            "length": 44
                        }
                    ]
                },
                {
                    "content": "NOAA Tech. Memo. NMFS-AFSC-4, 78 p.",
                    "polygon": [
                        0.9714,
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                    "spans": [
                        {
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                {
                    "content": "GUTTORMSEN, M., R. NARITA, J. GHARRETT, G.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 90974,
                            "length": 42
                        }
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                {
                    "content": "TROMBLE, and J. BERGER.",
                    "polygon": [
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                        {
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                            "length": 23
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                },
                {
                    "content": "1992. Summary of observer sampling of domestic",
                    "polygon": [
                        1.0761,
                        5.5004,
                        4.1236,
                        5.5004,
                        4.1236,
                        5.6528,
                        1.0761,
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                        {
                            "offset": 91041,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "groundfish fisheries in the Northeast Pacific Ocean",
                    "polygon": [
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                        4.1189,
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                    "spans": [
                        {
                            "offset": 91088,
                            "length": 51
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                    ]
                },
                {
                    "content": "and eastern Bering Sea, 1990. U.S. Dep. Commer.,",
                    "polygon": [
                        0.9714,
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                        }
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                        {
                            "offset": 91189,
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                        }
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                },
                {
                    "content": "PROCESSED REPORTS2",
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                    "spans": [
                        {
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                            "length": 18
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                },
                {
                    "content": "ARMISTEAD, C.E.",
                    "polygon": [
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                    ]
                },
                {
                    "content": "1992. Report to the fishing industry on results of the",
                    "polygon": [
                        4.4141,
                        1.5382,
                        7.5187,
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                        7.5187,
                        1.6858,
                        4.4141,
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                        {
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                    "content": "1992 eastern Bering Sea groundfish survey. Alaska",
                    "polygon": [
                        4.3665,
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                        }
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                },
                {
                    "content": "Fish. Sci. Cent., Natl. Mar. Fish. Serv., NOAA, 7600",
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                    "spans": [
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                            "offset": 91366,
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                {
                    "content": "Sand Point Way NE, Seattle, WA 98115. AFSC Pro-",
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                        7.4997,
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                            "offset": 91504,
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                {
                    "content": "ern California (1980 to 1987). Alaska Fish. Sci. Cent.,",
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                {
                    "content": "Natl. Mar. Fish. Serv., NOAA, 7600 Sand Point Way",
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            "content": "7600 Sand Point Way N.E., Bin C15700, Building 4, Seattle, WA 98115-0070"
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            "content": "Science and Research Director: William Aron Deputy Director: James Balsiger"
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            "content": "AUKE BAY LABORATORY (ABL) ."
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            "content": "Director: George R. Snyder"
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            "content": "NATIONAL MARINE MAMMAL"
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            "content": "......... Director: Howard W. Braham LABORATORY (NMML)"
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            "content": "OFFICE OF FISHERIES"
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            "content": "Director: J. Theodore Rodgers INFORMATION SYSTEMS (OFIS) ..... ....."
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            "content": "......"
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            "content": "RESOURCE ASSESSMENT AND CONSERVATION"
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            "content": "Director: Gary D. Stauffer ENGINEERING (RACE) DIVISION"
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            "content": "Facilities Director: Robert S. Otto Kodiak Investigations-Research"
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            "content": "RESOURCE ECOLOGY AND FISHERIES"
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            "content": ".... Director: Richard J. Marasco MANAGEMENT (REFM) DIVISION"
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            "content": "."
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            "content": "The Quarterly Report is compiled by the AFSC Publications Unit, Susan Calderón (editor). To change your delivery address or to cancel delivery, please notify: Quarterly Report, Alaska Fisheries Science Center, 7600 Sand Point Way N.E., Bin C15700, F/AKC, Seattle, WA 98115-0070, Phone (206) 526-4283."
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            "content": "PUBLICATION LIMITATION. Publication in whole or in part of the Quarterly Report should indicate the provisional nature of the findings and show credit to the appropriate research division of the AFSC. Advance copy should be submitted to the AFSC."
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            "content": "References to trade names do not imply endorsement by the National Marine Fisheries Service."
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            "content": "."
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            "content": "Table of Contents"
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            "content": "FEATURE The Blue Whales of the Southeastern North Pacific Ocean"
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                    "offset": 1635,
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            "content": "1"
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            "content": "AUKE BAY LABORATORY (ABL) 4 Water Quality Data Collected in Dutch Harbor ... New Information on Coho Distribution and Abundance in Taku River ... Long-Term Changes on Two Populations of Chum Salmon ... Time Series Models Combined With Kalman Filter ... Progress in Salmon Stock Identification ... Currents on Seamounts May Relate to Salmon-Driftnet Interactions"
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        {
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            "content": "NATIONAL MARINE MAMMAL LABORATORY (NMML)"
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            "content": "7"
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            "content": "Gray Whale Census ... NPTZ Ecosystem Study"
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            "content": "RESOURCE ASSESSMENT AND CONSERVATION ENGINEERING (RACE) DIVISION 8"
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            "content": "Bering Sea Groundfish Assessment Subtask ... Yellowfin Sole Maturity ... Japan-U.S. Longline Survey Data in RBASE Format ... 1992 West Coast Continental Slope Bottom Trawl Survey ... Shellfish Assessment (Kodiak) ... Recruitment Processes Fisheries-Oceanography Coordinated Investigations (FOCI) Task"
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            "content": "RESOURCE ECOLOGY AND FISHERIES MANAGEMENT (REFM) DIVISION 15"
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            "content": "Socioeconomic Assessments ... King and Tanner Crab Research ... Status of Stocks Task ... Age and Growth Studies ... Trophic Interactions Program ... U.S. Fisheries Observer Program"
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            "content": "Pices Holds Annual Meeting"
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            "content": "Awards ... Public Service and Cooperative Activities ... Meetings and Presentations"
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            "content": "23"
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            "content": "BY CENTER AUTHORS"
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            "content": "27"
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            "content": "Photo by K.C. Balcomb"
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            "content": "Among the great whales, the ror- quals, which include the blue, fin, sei, minke, and humpback whales, are noted for their long annual mi- grations. In general, most rorqual populations spend the summer in the cool, highly productive waters at high latitudes or in cool eastern boundary currents, where they feed heavily. From there they mi- grate south to their winter grounds in warm, temperate or tropical wa- ters, where they fast for several months. When biologist Allen Wol- man of the National Marine Mam- mal Laboratory and I began to study the populations of the great whales in the eastern North Pacific Ocean in the late 1950s and the 1960s, we found that the fin, sei, and humpback whales followed this annual cycle but that blue whales did not. As a result, one of our main research objectives has been to determine the migratory"
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            "content": "The Blue Whales of the Southeastern North Pacific Ocean"
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            "content": "patterns of the blue whales of the Southeastern North Pacific Ocean."
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            "content": "The whalers of the 19th century were aware of the presence of blue whales off the coasts of California and Baja California, Mexico, but they almost never attempted to at- tack such huge, powerful animals with their hand harpoons. One ex- ception was Charles Scammon, an American whaling captain known for discovering the calving la- goons of the gray whales along the coast of Baja California. In his classic volume The Marine Mam- mals of the Northwestern Coast of North America (1874), Scammon described how he encountered"
        },
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            "content": "large numbers of blue whales off Isla Cedros, Mexico, in July 1858, and managed to kill several of them with a darting-gun and bomb lance (such as the Alaskan Eski- mos still use to take bowhead whales). Shortly thereafter, Cap- tain Thomas Roys, of arctic whal- ing fame, invented the whaling rocket. In the summer of 1878, two entrepreneurs, J. N. Fletcher and R. L. Suits, made improvements on Roys' weapon and succeeded in killing 35 whales off San Francisco; their catch included blue whales as well as humpback and fin whales."
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            "content": "After the harpoon cannon was invented by the Norwegian Sven Foyn, the blue whale, because of its size, became the preferred tar- get of the whaling industry world- wide. The rapidly expanding industry reached Baja California in the winter of 1913-14, when the Norwegian factory ship Capella I,"
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            "content": "AFSC Quarterly Report"
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            "content": "operating out of Bahia Magdalena, Mexico, took 83 blue whales. Cap- tain Andreas Ingebrigtsen pub- lished an account of how he found the blues migrating south at the end of October, and passing again going north from April to June."
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            "content": "The first modern shore whaling stations in California were opened at Moss Landing in 1918, and at Trinidad in 1920. Both operated until 1926. Only three blue whales were taken by these stations."
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            "content": "Norwegian whalers returned to Baja California in a big way during the winter seasons of 1924-25 to 1928-29 with the floating factory ships Kommandoren I, Mexico, and Esperanza; one American ves- sel, the Lansing, operated there in 1928-29. These ships operated from protected anchorages, like mobile shore stations rather than the huge pelagic factory ships of later years. Again, they operated mostly out of Bahia Magdalena but also worked as far south as the Islas Tres Marias and north into the Gulf of California. They killed 942 blue whales during the five sea- sons. The Esperanza returned early in 1935 and killed 47 more blue whales from Bahia Magda- lena north to San Clemente Island. The companies' daily records show that these whalers found few blue whales in October and almost none from November to January; the vast majority were killed from February to early July, with a peak in May."
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            "content": "From 1927 to 1930, the Lansing operated mainly off southern Cali- fornia and killed 295 blue whales in 3 years (no data are available for 1930). From 1932 to 1937, another American factory ship California was whaling between San Diego and Point Reyes, California. Al- though this ship doubtless took some blue whales, no breakdown by species is available except for 1937, when eight blues were killed."
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            "content": "Trinidad Eureka"
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            "content": "San Rafael Richmond"
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            ],
            "content": "Farallon Is .**"
        },
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                    "length": 10
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            "content": "CALIFORNIA"
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            ],
            "content": "San Clemente I."
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        {
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                    "length": 13
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            ],
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            ],
            "content": "Pacific Ocean"
        },
        {
            "spans": [
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                    "length": 6
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            "content": "MEXICO"
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            ],
            "content": "Isla Cedros /"
        },
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            "content": "BAJA CALIFORNIA"
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            ],
            "content": "Bahla Magdalena"
        },
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            ],
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            "content": "Gulf of California"
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            ],
            "content": "Cabo San Lucas"
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            ],
            "content": "Islas Tres Marias \"."
        },
        {
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            "content": "Map shows the area where southeastern North Pacific blue whales range."
        },
        {
            "spans": [
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            "content": "No blue whales were taken by a shore whaling station that oper- ated at McNears Point near San Rafael, California, in 1939 nor by another that operated at Fields Landing, near Eureka, from 1940 to 1944, 1947 to 1949, and in 1951."
        },
        {
            "spans": [
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            ],
            "content": "The Del Monte Fishing Com- pany opened a whaling station at Point San Pablo, Richmond, Cali- fornia, in 1956, and the Golden Gate Fishing Company opened another one virtually next door in 1958. From 1959 to 1970, Wolman"
        },
        {
            "spans": [
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            ],
            "content": "and I conducted biological re- search on whales landed at these stations. Twenty-six blue whales were landed in 1958, and an addi- tional 22 from 1959 to 1965, after which the capture of blue whales was proscribed by the Interna- tional Whaling Commission. A few of these blues were taken as early as May, but most were killed in September and October. From 1966 to 1970, the catcher-boat captains kept records for us of their sightings of protected spe-"
        },
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            "content": "October-November-December 1992"
        },
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            "content": "2"
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            "content": "cies of whales. They spotted blue whales every year and in 1970 re- ported 195 sightings (some doubt- less repeat sightings of the same animals). From 1980 to 1983, cetologist Tom Dohl and his col- leagues at the University of Califor- nia, Santa Cruz, conducted regular aerial surveys of cetaceans off central California between Point Conception and Cape Mendocino; they saw many blue whales and found the same pattern of sea- sonal distribution that we had noted in the 1960s."
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            "content": "Beginning in 1962, I conducted many whale marking cruises dur- ing the winter and spring months off the west coast of Mexico. I was happily surprised to find that a goodly number of blue whales still ranged all along the west coast of Baja California, mainly from March through June, and also in the southern Gulf of California from January to March. Another link in the blue whale's migration pattern appeared in March 1975 during a marking cruise aboard the Soviet whaler Vnushitelnyi when Russian biologists and I discovered blue whales in the eastern tropical Pa- cific at lat. 9 °N, long. 94°W. About the same time, porpoise observers aboard tuna fishing vessels also sighted blue whales in the same general area."
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            "content": "At one time I thought that the blue whales off California and Baja California were the same animals that spent the late summer in the Gulf of Alaska. As more data accu- mulated, this hypothesis became untenable, and I am now con- vinced that these California blues constitute a discrete local popula- tion that ranges seasonally be- tween central California and the Cabo San Lucas region of Mexico. This idea is supported by the abun- dance of certain warm-water epi- zoites on the California blue whales: the suckerfish Remora australis, the barnacle Xenobalanus globicipitis, and the copepods Pennella balaenopterae and Balaenophilus unisetis. In contrast, I have rarely found these creatures on fin or sei whales taken off California, and our marking program revealed that these two species of whales mi- grate as far as the Gulf of Alaska. Wolman and I are currently analyz- ing all of our catch and sighting data in an attempt to draw a coher- ent picture of the migrations of southeastern North Pacific blue whales. This is difficult because the whales are nomadic and follow krill pastures, causing their travel routes and schedules to vary from year to year. Off central California,"
        },
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            "content": "we found that the whales feed solely on euphausiids - usually Euphausia pacifica but sometimes the more coastal Thysanoessa spinifera -whereas off Baja their main food source appears to be both the pelagic \"red crab\" Pleuroncodes planipes, which oc- curs periodically in immense swarms at the surface, and the eu- phausiid Nyctiphanes simplex."
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            "content": "Photo-identification studies of blue whales were conducted around the Farallon Islands, Cali- fornia, by the Cascadia Research Collective, Olympia, Washington, from 1986 to 1988, under contract to NOAA, and also in the Gulf of California off Loreto by the Mingan Island Cetacean Study, St. Lam- bert, Quebec, from 1982 to 1985, working independently. These re- search groups report that they have identified some of the same whales in both geographical areas. Besides revealing the movements of individual whales, studies like these may eventually permit an es- timate of the size of the southeast- ern North Pacific blue whale population -- perhaps one of only a few remaining viable populations of the earth's greatest animal."
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            "content": "This article was written by DALE W. RICE of the National Marine Mammal Laboratory."
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            "content": "AFSC Quarterly Report"
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            "content": "DIVISION AND LABORATORY REPORTS"
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        {
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            "content": "AUKE BAY LABORATORY (ABL)"
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            ],
            "content": "Water Quality Data Collected in Dutch Harbor"
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            "content": "Staff of the ABL and the NMFS Alaska Regional Office traveled to Dutch Harbor, Alaska, to collect water quality data in Captains Bay near a fish processor effluent out- fall and also in the vicinity of the city of Dutch Harbor. The trip was in response to reports received by the ABL of large numbers of juve- nile red king crab crawling out of Captains Bay and dying on the beach. During cursory beach sur- veys, the scientists observed many hundreds of king crab carapaces above the high watermark as well as a smaller number of moribund crabs. Oxygen measurements at depth were made at 15 sites; most sites had been measured pre- viously in June 1992. Oxygen lev- els were lower at the bottom at several sites compared to the June measurements. In June, none of the bottom samples had oxygen levels below 75% saturation. In late September, eight sites had ox- ygen levels less than 25% satura- tion, with the lowest oxygen value at 6% saturation. The scientists could not confirm the cause of the low oxygen environment but did confirm that the environment was severely stressed."
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            ],
            "content": "The preceding information was provided by LINCOLN FREESE."
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            "content": "New Information on Coho Distribution and Abundance in Taku River"
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            "content": "The primary research effort in 1992 of the Stock Assessment Task has been the study of distri- bution and abundance of coho salmon (Oncorhynchus kisutch) in the Taku River, a transboundary"
        },
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            "content": "U.S .- Canada river with headwaters in British Columbia. The research program was developed bilaterally with the Canada Department of Fisheries and Oceans and the Alaska Department of Fish and Game as part of the Pacific Salmon Treaty through the Pacific Salmon Commission Transboundary River Technical Committee."
        },
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            "spans": [
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            "content": "The study began in mid-August and ran until late October with a field crew operating from a tent camp at Taku Point in the estuary. The seven-person crew deployed drift gill nets and captured 619 re- turning adult coho salmon and placed radio tags in 354 fish which were released in the lower river. Another 60 fish were released with radio tags at Canyon Island, near the U.S .- Canada border, following capture in fish wheels there. A fully operational system of 22 station- ary tracking towers covered main tributaries and key points for fish passage in the whole Taku River drainage. The tracking towers de- tected, decoded, and stored radio- tag information and transmitted the information via a NOAA satel- lite relay to the ABL every 3 hours."
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            "content": "Most of the 400-plus radio- tagged coho salmon resumed up- river migration within a few days of tagging, and most continued into Canada. A late-season helicopter survey of spawning areas along the mainstem Taku River on 1 De- cember located 141 radio-tagged coho salmon, with 106 in Canada and 35 in the United States. Twenty-five fish were still alive and active: 23 in Canada and 2 in the United States. In mid-December 1992, the Task began analyzing findings and compiling results to show the distribution and migra- tions of radio-tagged fish that were followed on the Taku River in 1992."
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            "content": "The study findings showed that gill nets worked well to capture"
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            "content": "adult coho salmon, with low inci- dence of injury related to capture, and tagged fish quickly resumed upriver movement. The stationary tracking system with satellite relay worked well in its first full season of operation. Task members were able to follow migration of a major coho run in a large, remote glacial river system from start to end of the run through severe and extreme weather conditions. This was a first."
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        {
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            "content": "The preceding information was provided by JAMES OLSEN."
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            "content": "Long-Term Changes on Two Populations of Chum Salmon"
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            "content": "Scientists at the ABL have sam- pled two populations of chum salmon (O. keta) in North America for 20 years (1972-92) to evaluate long-term changes in growth and size and age at maturity. One pop- ulation is from Fish Creek, a tribu- tary of the Salmon River near Hyder, Alaska, at the head of Port- land Canal. Chum salmon from this area are renowned for their large size. The other population is a hatchery population from the Quilcene National Fish Hatchery (U.S. Fish and Wildlife Service) on Hood Canal in Puget Sound, Washington."
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            "content": "Maturing chum salmon return to Fish Creek starting in late June, and by early October only a few fish are still entering the stream. Quilcene Hatchery chum salmon arrive much later in late November, and by early January the run is mostly over. Comparing age-4 males, both populations show a strong decline in size at maturity (Figs. 1 and 2). At the same time, the average age at maturity for both populations is increasing as growth decreases. This trend has been especially strong since the late 1980s. Data from Japanese"
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            "content": "October-November-December 1992"
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            "content": "FISH CREEK - MALES"
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            "content": "95% CONFIDENCE INTERVAL"
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            "content": "MEAN LENGTH (MM) OF AGE 4 CHUM SALMON"
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            "content": "YEAR OF RETURN"
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            "content": "Figure 1. The mean length of age-4 chum salmon males from Fish Creek, 1972-92."
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            "content": "95% CONFIDENCE INTERVAL"
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            "content": "YEAR OF RETURN"
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            "content": "Figure 2. The mean length of age-4 chum salmon males from Quilcene Hatchery, 1972-92."
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            "content": "chum salmon research also show this trend. The decrease in size seems to relate to anomalies in climate change; however, density- dependent factors in the ocean may also play a role. If the trend of decreasing size at maturity contin-"
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            "content": "ues, it could signal a major change to lower survival rates than have been seen in recent years."
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            "content": "The preceding information was provided by JOHN HELLE and MARGARET HOFFMAN."
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            "content": "Time Series Models Combined With Kalman Filter"
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            "content": "Scientists at the ABL recently completed studies showing how simple biomass dynamics models can be used to assess physical magnitude and potential produc- tion of a fish stock if adequate time series of abundance measures and catches are available. Fitting biomass dynamics models to these time series for estimating un- known parameters requires recog- nizing both process and measurement errors. The Kalman filter, combined with state-space models of biomass dynamics, pro- vides the analytical basis for such fitting. After parameters are esti- mated, the filter can be used to estimate current physical condi- tion of the stock: biomass, ex- pected production of biomass during the next year, and biomass at year's end under the chosen harvest level. Further, fixed- interval smoothing revises esti- mates of biomass from the beginning of observation to in- clude information to the present. Two applications illustrate the methodology. First, the Schaefer model is fit by Kalman filtering to time series of catch and abun- dance indices from the yellowfin tuna fishery of the eastern Tropical Pacific Ocean. Relative magni- tudes of resulting estimates of an- nual production and standing stock are more consistent with what has been observed in wild fish populations than are past as- sessment estimates from alterna- tive estimation procedures. Differences in 1-year forecasts of yellowfin tuna biomass, if either process or measurement error is assumed to be responsible for dis- crepancies of observed and fitted abundance indices, emphasize the importance of distinguishing"
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            "content": "AFSC Quarterly Report"
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            "content": "MEAN LENGTH (MM) OF AGE 4 CHUM SALMON"
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            "content": "Forecasts of Yellowfin Tuna Biomass"
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            "content": "No Measurement Error"
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            "content": "Biomass (Millions of Pounds)"
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            "content": "Beginning of Year"
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            "content": "Figure 3. Forecast histories of yellowfin tuna biomass in the eastern Tropi- cal Pacific Ocean, 1934-67."
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            "content": "Southern Southeast Alaska Pink Salmon Catches"
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            "content": "* = temperature anomaly"
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            "content": "Temperature Anomaly (Degrees Celsius)"
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            "content": "Figure 4. Pink salmon catches off southern Southeast Alaska, 1917-91; smoothed estimates of expected catch based on the random trending recruit- ment model; and temperature deviations of northern hemisphere land masses."
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            "content": "between the two causes (Fig. 3). Second, a random trending re- cruitment model is fit to pink salmon catches in southern South- east Alaska, 1917-91, and the ex- pected catches are produced by fixed-interval smoothing. Temper- ature anomalies of the Northern"
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            "content": "Hemisphere land masses trend similarly to the expected catches since the 1930s, indicating large- scale climate changes may under- lie the production trend (Fig. 4)."
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            ],
            "content": "The preceding information was provided by JAMES OLSEN."
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            "content": "Progress in Salmon Stock Identification"
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            "content": "The U.S .- Canada Salmon Pro- gram has been involved in stock identification activities in northern British Columbia and Southeast Alaska since 1982. Major efforts were made to establish baseline information on sockeye (O.nerka), chum, and pink salmon (O. gorbuscha). Baseline information on chinook salmon (O. tshawytscha) was concentrated in Southeast Alaska. Although ef- forts were focused on genetic stock identification (GSI), baseline information on parasites and scale characteristics that could be used for stock identification were also pursued. For sockeye salmon in particular, the combination of GSI, parasites, and scale characteris- tics has proved to be a potentially powerful tool for differentiating stocks."
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            "content": "The status of genetic informa- tion by species follows:"
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            "content": "Chum salmon - Tissue sam- ples from chum salmon popula- tions were collected from 1986 to 1990 from northern British Colum- bia to northern Southeast Alaska. These samples have been ana- lyzed by starch-gel electrophore- sis in the laboratory. The allelic frequency data obtained from this technique are being analyzed to determine the extent of genetic dif- ferentiation that occurs between chum salmon populations. A re- port of the results of the work with chum and other salmon species will be presented at the interna- tional symposium \"Genetics of Subarctic Fish and Shellfish\" to be held in Juneau in May 1993."
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            "content": "Sockeye salmon - Tissue sam- ples were collected from 52 sock- eye salmon spawning locations"
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            "content": "6"
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            ],
            "content": "October-November-December 1992"
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                        3.0744,
                        2.7225,
                        0.9397,
                        2.7313
                    ]
                }
            ],
            "content": "from 1982 to 1990. Preliminary data analysis of gene frequency data obtained from starch-gel electrophoresis has been com- pleted and shows promising re- gional differentiation. Some rare alleles were found that should be useful in genetic stock identifica- tion. A report of the results is ex- pected in 1993."
        },
        {
            "spans": [
                {
                    "offset": 22413,
                    "length": 521
                }
            ],
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                }
            ],
            "content": "Pink salmon - The analysis of even-year pink salmon from Japan, Russia, and Alaska was re- peated to include two additional collections from Kamchatka (Rus- sia). Analysis of the genetic differ- ences between populations revealed that fish from east and west Kamchatka can be differenti- ated and that fish from Japan and Sakhalin Island are genetically very similar. The greatest genetic difference was found between Alaska fish and Asian fish. Certain loci were particularly useful for dis- tinguishing between regions."
        },
        {
            "spans": [
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                    "length": 337
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            ],
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                    ]
                }
            ],
            "content": "Chinook salmon - Tissue sam- ples were collected from chinook salmon in about 25 river and tribu- tary systems in Southeast Alaska. Laboratory analysis has been completed for about half the sam- ples and should be completed for all the samples by spring 1993. Preliminary analyses show that ex- cellent regional differentiation ex- ists."
        },
        {
            "spans": [
                {
                    "offset": 23273,
                    "length": 54
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            ],
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                }
            ],
            "content": "The preceding information was provided by JAMES OLSEN."
        },
        {
            "spans": [
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                    "offset": 23328,
                    "length": 64
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "Currents on Seamounts May Relate to Salmon-Driftnet Interactions"
        },
        {
            "spans": [
                {
                    "offset": 23393,
                    "length": 260
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "Little information is available on the physical environment of the Northern Emperor Seamount Chain (NESC). Present theory is that surface currents are deflected by the chain and quasi-stationary rotating columns (Taylor columns) of water develop on some of the"
        },
        {
            "spans": [
                {
                    "offset": 23654,
                    "length": 316
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            ],
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            ],
            "content": "seamounts. The subarctic frontal zone may also be trapped by the chain and intensified in the nearby region. It is likely that increased salmon abundance over the NESC and the resulting large bycatches of salmon observed in the 1990 Japanese squid driftnet fishery are associated with these physical characteristics."
        },
        {
            "spans": [
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "A joint study by the ABL and the University of Alaska was initiated in summer 1992 on the biological and physical interactions associ- ated with the NESC. Field activi- ties were completed from the Japanese research vessel Hokusei Maru for the collection of physical oceanographic data in conjunction with Hokkaido Univer- sity of Japan. This data included conductivity, temperature, and depth profiles (CTDs); expendable CTDs (XCTDs); and surface drift- ing buoys. Sea level, height, and temperature data from satellite- borne sensors were also collected as part of the study."
        },
        {
            "spans": [
                {
                    "offset": 24549,
                    "length": 799
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "The buoys deployed from the ship are part of a much larger proj- ect called WOCE (World Ocean Circulation Experiment), which is processing the data from the satel- lite-tracked drifting buoys. Seven buoys were deployed along the long. 170°E trackline, from lat. 48°N to 38°N. Two other buoys were deployed, one west of the seamounts at long. 155°E and the other east of the seamounts at long. 175°E. The initial drifter data support our model of current flow in the NESC region. The analysis of the drifter data identified anti- cyclonic motion over the Nintoku Seamount that may be generated by a Taylor column. Continued monitoring of the drifters will pro- vide additional information on sur- face current flow over the NESC, which will lead to a combined anal- ysis (with CTD and altimeter data)"
        },
        {
            "spans": [
                {
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                    "length": 37
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            ],
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                }
            ],
            "content": "of the current structure of the NESC."
        },
        {
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                {
                    "offset": 25387,
                    "length": 71
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "The preceding information was provided by JIM MURPHY and STEVEN IGNELL."
        },
        {
            "spans": [
                {
                    "offset": 25459,
                    "length": 40
                }
            ],
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            ],
            "content": "NATIONAL MARINE MAMMAL LABORATORY (NMML)"
        },
        {
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                {
                    "offset": 25500,
                    "length": 17
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            ],
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            ],
            "content": "Gray Whale Census"
        },
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                    "offset": 25518,
                    "length": 827
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            ],
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            ],
            "content": "The NMML, in cooperation with the Southwest Fisheries Science Center (SWFSC) and the NMFS Southwest Regional Office, initi- ated a study on 7 December 1992 to census gray whales in the eastern North Pacific Ocean dur- ing their southbound migration. The census is being conducted from shore and aerial surveys at Granite Canyon, California. The shore survey was initiated on 9 De- cember and will continue through 8 February 1993. Four people will rotate observer duties from two in- dependent stations, approxi- mately 25 m above the water. To improve the accuracy of pod-size estimates from shore and to deter- mine the offshore distribution of migrating whales, aerial surveys will be conducted 5-15 January. During the first few days of the survey, sightings were reported for gray whales, blue whales, and humpback whales."
        },
        {
            "spans": [
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                    "length": 459
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            ],
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            ],
            "content": "The last such census of gray whales was conducted in the win- ter of 1987-88. The resulting pop- ulation estimate was 21,113 (se=688). This population, also known as the California stock of gray whales, was recently delisted from the Endangered Species Act (ESA). This year's work is the first activity under the required ESA monitoring program for delisted species. The results of this survey will lead management to important considerations, such as: Is the"
        },
        {
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                    "length": 21
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            ],
            "content": "AFSC Quarterly Report"
        },
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            ],
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            "content": "7"
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                }
            ],
            "content": "California stock still increasing? What is the current abundance level? Is there any evidence over the past 20 years that the rate of increase is slowing (as would be expected when the population ap- proaches its carrying capacity)? Is there any evidence that the av- erage condition of animals in the population is changing as the pop- ulation recovers?"
        },
        {
            "spans": [
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            ],
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            ],
            "content": "NPTZ Ecosystem Study"
        },
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            "spans": [
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                    "offset": 27206,
                    "length": 387
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            ],
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                }
            ],
            "content": "An analysis of the trophic dy- namics and community structure of the fauna of the North Pacific Transition Zone (NPTZ) was initi- ated with the High-Seas Driftnet Programs at the ABL, the Honolulu Laboratory (SWFSC), and MBC Applied Environmental Sciences of Costa Mesa, California. The project will compile and review the available information on species in the NPTZ and convene a work-"
        },
        {
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                {
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                    "length": 58
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            ],
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            ],
            "content": "shop to explore approaches to modeling the NPTZ ecosystem."
        },
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            ],
            "content": "The preceding information was provided by DOUGLAS De MASTER."
        },
        {
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            ],
            "content": "RESOURCE ASSESSMENT AND CONSERVATION ENGINEERING (RACE) DIVISION"
        },
        {
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            ],
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            ],
            "content": "Bering Sea Groundfish Assessment Subtask"
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            ],
            "content": "The eastern Bering Sea crab- groundfish bottom trawl survey has traditionally been conducted using a sampling plan based on a 20 by 20 nautical mile (nmi) grid. Trawls are made near the center of the grid blocks with some addi- tional sampling at the corners of the grid near the Pribilof Islands and St. Matthew Island (Fig. 1)."
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            ],
            "content": "These surveys have been con- ducted using at least two vessels. Since the early 1980s, the plans called for each vessel to complete alternating columns of stations while working from inner Bristol Bay westward toward the edge of the continental shelf. Any differ- ences in relative fishing power of the vessels has been compen- sated for by mathematical analy- ses of distributions of catches by each vessel."
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            ],
            "content": "Due to potential budget cuts in FY93, the Bering Sea Subtask has been investigating sampling schemes using only one vessel. The first part of this work has been to estimate the effects of only sam- pling every other column and whether odd or even numbered columns show significant differ- ences (for station identification purposes columns are numbered and rows are alphabetic). To eval- uate this approach, we used sur-"
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            "content": "180"
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            "content": "62 ."
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            "content": "62"
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            ],
            "content": "St. MATTHEW IS."
        },
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            "content": "200 m"
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            "content": "100 m"
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            "content": "ALASKA"
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            "content": "50 m"
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            "content": "60"
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            "content": "IS."
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            "content": "ALASKA PENINSULA"
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            "content": "PRIBILOF IS."
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            "content": "Figure 1. Traditional sampling pattern used in the eastern Bering Sea crab-groundfish bottom trawl survey."
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            "content": "October-November-December 1992"
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            "content": "veys from the annual time series of data beginning in 1982, separated the data between odd and even numbered columns (without using corner stations), and then esti- mated biomass for major species using each set of data. These re- sults were then compared with the estimates using the entire data set. Since fishing power differences are presently used only between vessels in the same survey and not between years, no fishing power corrections were used in this anal- ysis in order to present the worst- case scenario of using only one vessel."
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            ],
            "content": "Comparisons for four major species are shown in Figures 2 to 5. The results for walleye pollock (Theragra chalcogramma) show that, although an occasionally high deviation may occur, most of the differences over the time series are less than 15% (Fig. 2). A Student's t-test over the length of the time series for a mean difference of zero was not significant for either even or odd columns (p=0.612 and p=0.785, respectively). The dif- ferences for Pacific cod (Gadus macrocephalus) were all less than 15% over the entire series (Fig. 3). There was no significant difference from zero over the time series for either even or odd columns (p=0.841 and p=0.745, respec- tively). Both walleye pollock and Pacific cod are widely distributed across the shelf. Among species with more limited distributions is yellowfin sole (Pleuronectes asper), which also showed large differences during part of the time series (Fig. 4) but, over all, no sig- nificant difference from a mean of zero (p=0.513 for even columns and p=0.512 for odd columns). Sampling of Alaska plaice (P. quadrituberculatus), which has a relatively limited distribution, pro- duced large differences from the"
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            "content": "% DIFFERENCE FROM TOTAL SURVEY"
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            "content": "WALLEYE POLLOCK"
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            "content": "EVEN COLUMNS"
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            "content": "30"
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            "content": "MEAN EVEN= - 1.95"
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            "content": "Yellowfin Sole Maturity"
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            "content": "A total of 2,103 length-maturity observations for yellowfin sole were collected in June during the 1992 eastern Bering Sea bottom trawl survey. A five-point maturity scale was applied to females, and a four-point maturity scale applied to males."
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            "content": "Sampling occurred during a time when spawning was likely oc- curring, however, because sam- pling was conducted outside their nearshore spawning grounds (Fig. 6), few spawning yellowfin sole were observed. Subse- quently, most mature females were found in either a prespawning or spent condition."
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            "content": "Equations relating length at sexual maturity are as follows:"
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            "content": "PL = 1/(1+ e -0.5600(L) + 12.4080) (males)"
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            "content": "PL = 1/(1+e -0.7946(L) +24.4468 (females) -"
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            "content": "The preceding information was provided by GARY WALTERS."
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            "content": "October-November-December 1992"
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            "content": "ble only on data forms, from indi- vidual computer files, or on stor- age tapes accessed through the Burroughs B-7900 mainframe computer. The new database will be temporarily stored on a PC in RBASE format as an intermediate step toward inclusion in a net- worked structured query language (SQL) server environment. Earth Science Data Information Man- agement (ESDIM) funding has been received to mount a modern, powerful, interactive database for the large volume of historical co- operative longline survey data, as well as for the 1987-92 and future collections from the NMFS long- line survey. Extensive editing will be conducted before the data are made public. In its final form, the database will allow researchers to access data from both longline"
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            "content": "TOTAL LENGTH (cm)"
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            "content": "Figure 7. Percentge of mature male (top) and female (bottom) yellowfin sole by length (cm). Curves represent the fitted logistic equation."
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            "content": "gather data on the reproductive biology of key species. The suc- cessful completion of those initial cruises led to the expansion of slope species assessments to in- clude areas off California and Washington during fall cruises in 1989 through 1992. The most re- cent survey was completed 13"
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            "content": "November when the NOAA re- search vessel Miller Freeman re- turned from surveying the upper continental slope resources off Washington and northern Oregon. The objectives were to extend the investigation of the distribution and abundance of slope ground- fish resources to the Washington"
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            "content": "coast, to continue collecting bio- logical data on selected species of commercial importance, and to further describe the community structure and relate it to physical oceanographic factors such as depth, temperature, and salinity."
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            "content": "The 1992 survey began 17 Oc- tober near Nitinat Canyon, west of Cape Flattery, Washington (Fig. 8). Sampling progressed from north to south, terminating off northern Oregon at lat. 45°30'N. A polyeth- ylene Nor'eastern trawl rigged with a heavy, rubber disk footrope was used to obtain samples from 78 bottom trawl stations. Oceano- graphic data were collected at 42 of these stations with CTD casts, and temperature profiles were ob- tained with XBTs at an additional 10 stations. Stations were laid out along east-west tracklines spaced 9 nmi apart between the depths of 100 and 700 fathoms (fm). Trawl hauls were 30 minutes long at sta- tions shallower than 400 fm and 1 hour long at stations deeper than 400 fm. Standard data collections included catch weights and num- bers, length distributions of all fish species, and specimen data from subsamples of target species and major components of the catch (i.e., sex, length, weight, maturity, stomach contents, gonadal-so- matic indices, and otoliths for age determination). Experimental use of electronic, bar-coded length- frequency recorders has pro- duced successful results, and by the second week of the survey, most of the length data were being collected with this equipment. Re- cording speed and accuracy seem to be substantially improved with this new application of existing technology."
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            ],
            "content": "Catch rates of the target spe- cies in each of the six 100-fm depth strata are shown in Figure 9. As in other areas of the coast, the depth"
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            "content": "12"
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            "content": "October-November-December 1992"
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            "content": "-"
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            "content": "ranges inhabited by the two spe- cies of thornyheads overlap, but shortspine thornyheads are more abundant in the shallower strata while longspine thornyheads are more abundant in deeper strata. In contrast to previous surveys when sablefish catches were greatest at middepths, on this oc- casion the highest catch rates for sablefish occurred in the shallow- est stratum. As was expected, arrowtooth flounder catch rates were higher in this region than in more southern areas near the southern extent of the species' range."
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            ],
            "content": "Cooperating scientists from the Center's Resource Ecology and Fisheries Management (REFM) Di- vision and the Oregon Department of Fish and Wildlife also partici- pated in the study. Further, Sub- task scientists collected data and specimens for the University of Washington for domoic acid stud- ies, Moss Landing Marine Labs for feeding and age and growth stud- ies of eelpouts and Pacific grena- diers, the REFM Division for reproductive biology studies of rougheye and shortraker rockfish, and the Washington Department of Fisheries for maturity studies and gonadal-somatic indexing of arrowtooth flounder."
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            "content": "The preceding information was provided by MARK WILKINS."
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            "content": "Shellfish Assessment (Kodiak)"
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            "content": "The Bristol Bay red king crab fishery began on 1 November and closed 7 November with landings of 8.1 million pounds (Alaska De- partment of Fish and Game prelim- inary data). Landings were somewhat below the 10.3 million pound preseason guideline based on the 1992 eastern Bering Sea trawl survey. The fishery was val- ued at $40.5 million, as compared"
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            "content": "126 00W"
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            "content": "Nitinat Canyon!"
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            "content": "48 00N"
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            "content": "×"
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            "content": "to $51.2 million in 1991. A record number of 281 vessels participated in the fishery, considerably ex- ceeding the previous record of 240 vessels set in 1991. The Pribilof Islands blue king crab fishery re- mained closed due to low stock abundance, which was again indi- cated by the survey. There has not been a king crab fishery in the Prib- ilof Islands since fall 1987. The St. Matthew Island blue king crab fish- ery opened 4 September for 72 hours. Landings were 2.4 million"
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            "content": "Figure 9. Mean CPUE (catch per unit of effort) (kg/km trawled) of the major slope groundfish species during the 1992 continental slope bottom trawl survey off Washington and northern Oregon."
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            "content": "level of 207 million pounds and is dence with adequate food sup- scheduled to open 15 January."
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            "content": "The preceding information was provided by ROBERT OTTO."
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            "content": "Recruitment Processes Fisheries- Oceanography Coordinated Investigations (FOC!) Task"
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            "content": "Members of FOCI have been investigating the vertical distribu- tion of walleye pollock eggs and larvae in Shelikof Strait, Gulf of Alaska, using data from 36 MOC- NESS (Multiple Opening and Clos- ing Net and Environmental Sensing System) tows taken in April and May aboard the NOAA ship Miller Freeman in 1986-88. Understanding the vertical distri- bution of the eggs and larvae will help us as we investigate factors relating to their survival, such as drift with the currents and coinci-"
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            "content": "plies."
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            "content": "Most eggs were found from below 150 m to near bottom at depths to 300 m. Complex pat- terns of differences in depths of eggs during development were noted. The egg vertical distribu- tion did not seem to vary in relation to observed differences in density of the ambient water. Larvae hatch while the eggs are at depth, but quickly rise to the upper 50 m of the water column where they re- main during larval development. Larger larvae (7-10 mm SL) un- dergo limited diel vertical migra- tion within the upper 50 m. They are deepest during the day, shal- lowest at dusk, slightly deeper at night, and even deeper at dawn. Their mean depths of occurrence were between 21 and 37 m at all times. At these depths, prey abun-"
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            "content": "dances (copepod nauplii) gener- ally were sufficient for larval pol- lock growth. Pronounced thermoclines and pycnoclines were present in the part of the water column inhabited by the lar- vae in late May. There was some indication that larvae remained below the upper mixed layer dur- ing periods of increased turbu- lence but at depths during daytime where light was sufficient for feed- ing and where prey densities were adequate. These results from sampling at sea correspond well to behaviors of the eggs and larvae observed by RACE scientists in laboratory experiments con- ducted at the Mark O. Hatfield Ma- rine Science Center, Newport, Oregon, (see feature article in AFSC Quarterly Report , July- August-September 1992)."
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                        10.215
                    ]
                }
            ],
            "content": "October-November-December 1992"
        },
        {
            "spans": [
                {
                    "offset": 45364,
                    "length": 1
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "."
        },
        {
            "spans": [
                {
                    "offset": 45366,
                    "length": 1
                }
            ],
            "boundingRegions": [
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            ],
            "content": "1"
        },
        {
            "spans": [
                {
                    "offset": 45368,
                    "length": 57
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "The preceding information was provided by ARTHUR KENDALL."
        },
        {
            "spans": [
                {
                    "offset": 45426,
                    "length": 57
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            ],
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            ],
            "content": "RESOURCE ECOLOGY AND FISHERIES MANAGEMENT (REFM) DIVISION"
        },
        {
            "spans": [
                {
                    "offset": 45484,
                    "length": 25
                }
            ],
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            ],
            "content": "Socioeconomic Assessments"
        },
        {
            "spans": [
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                    "offset": 45510,
                    "length": 593
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            ],
            "content": "The Socioeconomic Assess- ments Task continued its work with the NOAA Office of Damage As- sessment Regulations in Washing- ton, D.C., to prepare the regulatory language supporting the im- plementation of the Oil Spill Pollu- tion Act of 1990. Responsibilities included developing economic text and guidance in preparation of regulatory language, Federal Reg- ister notices, and review of techni- cal submissions on economics and methodological issues, as well as review of and response to pub- lic comments to a series of Ad- vanced Notices of Proposed Rulemaking (ANPR) and public workshops."
        },
        {
            "spans": [
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                    "offset": 46104,
                    "length": 181
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                }
            ],
            "content": "The Task also continued the analyses and review of fishery management plan amendments for the Pacific and North Pacific Fishery Management Councils (PFMC and NPFMC, respec- tively)."
        },
        {
            "spans": [
                {
                    "offset": 46286,
                    "length": 397
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            ],
            "boundingRegions": [
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            ],
            "content": "1. NPFMC Bering Sea- Aleutian Island (BS-AI) Amend- ment 24 Gear and/or Seasonal Allocations of Pacific Cod - An industry review draft was prepared describing the revisions that are planned for the environmental as- sessment-regulatory impact re- view (EA-RIR) for Amendment 24. The revised EA-RIR will be re- viewed by the Council in April; final action by the Council is scheduled for June 1993."
        },
        {
            "spans": [
                {
                    "offset": 46684,
                    "length": 789
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "2. NPFMC BS-AI Amendment 25 Allocating PSC Allowances to the Three Pollock Allocation Fish- eries - Task members revised a draft EA-RIR that evaluated the merits of establishing an explicit allocation of the BS-Al prohibited species catch (PSC) allowances among the onshore processing, at-sea processing, and community development quota walleye pol- lock fisheries. (Amendment 18 and Revised Amendment 18 es- tablished these three pollock allo- cation fisheries but did not address PSC allowances for them.) The Council recommended that 7.5% of each pollock-fishery PSC allow- ance be split among the commu- nity development quota recipients on the basis of their pollock alloca- tions. If approved by the Secretary of Commerce, this could be a pilot program for individual bycatch quotas."
        },
        {
            "spans": [
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            ],
            "content": "3. NPFMC BS-AI Revised Amendment 18 Inshore/Offshore Pollock Allocation off Alaska - Task members assisted in re- sponding to public comments on this amendment and provided a detailed technical review of the final supplemental EIS-RIR. The revised amendment, partially ap- proved by the Secretary of Com- merce, will result in the following allocation of the BS-Al walleye pol- lock total allowable catch (TACs) for 1993-95: community develop- ment quota fishery 7.5%, onshore processing fishery 32.375%, and at-sea processing fishery 60.125%"
        },
        {
            "spans": [
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                    "length": 320
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            ],
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            ],
            "content": "4. NPFMC Halibut and Sable- fish Individual Transferable Quota (ITQ) Amendments - Task mem- bers assisted Alaska Region and NPFMC staffs in preparing regula- tions for the halibut and sablefish ITQ programs recommended by the NPFMC. The amendments are being reviewed by the Secretary of Commerce, and a final decision is"
        },
        {
            "spans": [
                {
                    "offset": 48338,
                    "length": 253
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            ],
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            ],
            "content": "expected by the Secretary by 19 January. If the amendments are approved, the ITQ programs would be implemented by the start of the 1995 halibut and sablefish fixed-gear fisheries and would be the largest ITQ programs in the U.S. exclusive economic zone."
        },
        {
            "spans": [
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                    "length": 241
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            ],
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            ],
            "content": "5. PFMC Halibut and Sablefish ITQ Amendment - A preliminary analysis of options for initial alloca- tion of sablefish ITQs was pre- pared and presented to the Scientific Statistical Committee, the Advisory Panel, and the council in November."
        },
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            ],
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            ],
            "content": "6. PFMC Groundfish License Limitation Amendment - An anal- ysis of alternative capacity repre- sentations was prepared for the Northwest Region."
        },
        {
            "spans": [
                {
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            ],
            "content": "In addition to efforts in support of the regional councils, task mem- bers reviewed Saltonstall-Kennedy and Sea Grant research propos- als, Alaska Sea Grant papers, and a seafood markets and trade pro- posal for the Oregon State Univer- sity Agricultural Experiment Station."
        },
        {
            "spans": [
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                }
            ],
            "content": "The preceding information was provided by JOE TERRY."
        },
        {
            "spans": [
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                    "offset": 49307,
                    "length": 29
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            ],
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            ],
            "content": "King and Tanner Crab Research"
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            ],
            "content": "Forecasts of crab catches were developed from analyses of the 1992 Bering Sea crab survey data for king, Tanner (C. bairdi), and snow (C. opilio) crab stocks for 1993-96. Based on prerecruit abundance estimates from the 1992 survey, red king crab catches from the Bristol Bay stock are ex- pected to remain in the 5-15 million pound range for the 1993-95 sea- sons. Catches of Bering Sea C. bairdi should remain at the 35-45 million pound level for 1993 and 1994, then decrease to the 15-25 million pound level in 1995."
        },
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            "content": "AFSC Quarterly Report"
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            "content": "15"
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            ],
            "content": "Catches of C. opilio are expected to decrease to the 100-150 million pound level for 1994 and 1995 sea- sons and then increase to the 200- 250 million pound level in 1996. Work was begun on the status of stocks analysis for 1992."
        },
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            ],
            "content": "The preceding information was provided by JERRY REEVES."
        },
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            "content": "Status of Stocks Task"
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            "content": "Stock assessments prepared for the NPFMC"
        },
        {
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            ],
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            ],
            "content": "Members of the Status of Stocks Task presented their annual stock assessment documents at the NPFMC Gulf of Alaska (GOA) and BS-Al Plan Team meetings, which were held at the Center in November. The major agenda items were stock assessments for the various species managed under the groundfish fishery man- agement plans, compilation of the 1992 stock assessment and fish- ery evaluation (SAFE) reports, and final recommendation of accept- able biological catch (ABC) levels for the 1993 season. The SAFE reports summarize the best avail- able scientific information con- cerning the past, present, and possible future condition of groundfish stocks and fisheries under federal management. The NPFMC uses the SAFE reports and other information to determine final ABCs and TACs (see Tables 1 and 2) for the groundfish fisheries in the GOA and BS-Al regions."
        },
        {
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            ],
            "content": "A summary of the major changes in the final ABCs between 1992 and 1993 in the GOA region is as follows (Table 1). The ABC for walleye pollock increased from 99,400 t to 160,400 t (an increase of 61%), due primarily to a new"
        },
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            ],
            "content": "analysis indicating that the previ- ous exploitation rate was too con- servative. The ABC for slope rockfish was split into two compo- nents, one for northern rockfish (1993 ABC = 5,670 t) and one for the remainder of the complex (1993 ABC = 8,300 t). The split was implemented in order to pro- vide additional protection for northern rockfish. The ABC for thornyhead rockfish decreased from 1,798 t to 1,180 t (a decrease of 34%), due primarily to a change in the estimate of the natural mor- tality rate."
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            ],
            "content": "A summary of the major changes in the final ABCs between 1992 and 1993 in the BS-Al region is as follows (Table 2). The ABC for walleye pollock decreased from 1,646,600 t to 1,440,700 t (a de- crease of 13%), due primarily to a decrease in abundance indicated by trawl surveys. The ABC for Pa- cific cod decreased from 182,000 t to 164,500 t (a decrease of 10%), again primarily due to a decrease in abundance indicated by trawl surveys. The ABCs for yellowfin sole, arrowtooth flounder, and rock sole all decreased substan- tially in response to a change in exploitation strategy. The yellowfin sole ABC decreased from 372,000 t to 238,000 t (a de- crease of 36%), the arrowtooth flounder ABC decreased from 82,300 t to 72,000 t (a decrease of 13%), and the rock sole ABC de- creased from 260,800 t to 185,000 t (a decrease of 29%). The ABC for Atka mackerel increased from 43,000 t to 117,100 t (an increase of 172%), due primarily to a greatly increased estimate of biomass."
        },
        {
            "spans": [
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            ],
            "content": "The preceding information was provided by RICHARD METHOT."
        },
        {
            "spans": [
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            ],
            "content": "Age and Growth Studies"
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            ],
            "content": "From January to December 1992, the Age and Growth Task estimated the ages of groundfish species for 1,327 rock sole, 363 rex sole, 1,254 yellowfin sole, 9,294 walleye pollock, 4,237 Pacific cod, 3,403 sablefish, 827 Atka mack- erel, 5,104 Pacific whiting, and 1,908 Pacific ocean perch, for a total of 27,717. In addition 7,730 fish were reexaminied, 3,851 were reread, and 875 were examined and determined to be unreadable."
        },
        {
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            ],
            "content": "In cooperation with the NMML, radiometric counting equipment was purchased initially to support work on the age validation of rockfishes (Pacific ocean perch, shortspine thornyheads, shortra- ker, rougheye, and northern and dusky rockfish). Eventually the equipment will be used for radiometric investigations on ba- leen whales."
        },
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            ],
            "content": "The preceding information was provided by DAN KIMURA."
        },
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            "spans": [
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            ],
            "content": "Trophic Interactions Program"
        },
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            "content": "Activities and research results"
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            ],
            "content": "Approximately 141 fish stom- achs were collected and 2,366 were analyzed in the laboratory for the Bering Sea area this quarter. A total of 623 fish stomachs from the Aleutian Islands were analyzed in the laboratory and 996 stomachs were collected from the West Coast slope survey. Only six ob- servers were trained for stomach collection this quarter."
        },
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            "content": "New trophic interactions report"
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            "content": "Task members completed a re- port summarizing the food habits and total consumption of Bering"
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            "spans": [
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                        6.1229,
                        5.2746,
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            "content": "1,212"
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                    "length": 5
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            "content": "1,010"
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            "content": "rockfish"
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            "content": "4,450"
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            "content": "E"
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            "content": "1,281"
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            "content": "Total"
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            "content": "6,740"
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            "content": "Demersal"
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            "content": "SEO"
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            "content": "550"
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            "content": "800"
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            "content": "550"
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            "content": "800"
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            "content": "Thornyhead rockfish"
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            "content": "1,798"
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            "content": "1,798"
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            "content": "1,062"
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            "content": "Other species"
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            "content": "NA"
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            "content": "NA"
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            "content": "13,432"
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            "content": "14,602"
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            "content": "* Shelikof Strait pollock is included within the W/C ABC range. \"Deep water flatfish\" includes rex sole, Dover sole, and Greenland turbot."
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            ],
            "content": "* \"Shallow water flatfish\" includes rock sole, yellowfin sole, butter sole, starry flounder, and other flatfish not specifically defined."
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                    "length": 53
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            "content": "W = Western: C = Central; E = Eastern; GW = Gulfwide;"
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                    "length": 47
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            "content": "WYK = Western Yakutat; SEO = Southeast Outside."
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            "content": "18"
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            "content": "October-November-December 1992"
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            "content": "."
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                    "offset": 56603,
                    "length": 1
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            "content": "2"
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            "content": "Species"
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            "content": "ABC (mt)"
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            "content": "TAC (mt)"
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            "content": "1992"
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            "content": "1993"
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            "content": "1992"
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            "content": "1993"
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            "content": "Sea groundfish populations through 1989. Numbers-at-age of snow crab, Tanner crab, and wall- eye pollock consumed by groundfish predators were esti- mated for 1984 through 1989. These numbers were used to re- construct the respective size of the juvenile populations of these prey and to calculate annual instanta- neous predation mortality coeffi- cients. Fluctuations in numbers of prey consumed at age can occur through several processes: changes in predator or prey abun- dance, changes in prey availability, or predators switching to a more abundant prey source. If preda- tors respond to increases in prey abundance by switching preferen- tially to feeding on the more abun- dant prey, they can cause density-dependent mortality on that prey species. This means that predators can alter the relative size of the prey population. Changes across years in annual predation"
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            "content": "mortality coefficients at age of ju- venile prey populations provide evidence that this process may be occurring."
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            ],
            "content": "Fluctuations in estimates of an- nual predation mortality coeffi- cients at age were existent for snow crab, Tanner crab, and wall- eye pollock (Table 3). Large fluc- tuations in coefficients for snow crab ages 1 and 2 were estimated, particularly for age-1 crab from 1984 to 1985 and age-2 crab from 1985 to 1986. A large recruitment of snow crab possibly occurred in 1983 or 1984 and the large natural mortality coefficients estimated from groundfish predation data show larger than average natural mortality at age for the 1983 year class. Larger mortality at age for Tanner crab was noted at age 0 for the 1984 year class, which was also suspected to be above aver- age. Finally, natural mortality coef- ficients for the 1985 year class of walleye pollock are larger at age"
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            "content": "than for adjacent year classes. The 1985 year class was more abundant than the 1986 to 1989 year classes at age 1, but later proved to be about the same size as the 1986 and 1987 year classes at age 3. It appears that differential predation by groundfish on the 1985 year class from age 0 to 2 may have reduced the relative abundance of this year class upon recruitment to the fishery."
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            "content": "Bering Sea flatfish food habits study completed"
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            "content": "Yellowfin sole, rock sole, and Alaska plaice are important fish species in the eastern Bering Sea ecosystem and fishery. These species appear to have very similar feeding habits; however, detailed analysis of their food habits in the eastern Bering Sea has not been studied. A total of 11,651 yellowfin sole, 586 rock sole, and 513 Alaska plaice stomachs were collected from the eastern Bering Sea 1984-"
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            "content": "AFSC Quarterly Report"
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            "content": "19"
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            "content": "Table 3. -- Estimates of the instantaneous annual natural mortality coefficient by age for snow crab, Tanner crab, and walleye pollock obtained from reconstructing juvenile population sizes at age using estimates of population size at age 3 and assuming the only mortality is mortality from predation by groundfish predators."
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                }
            ],
            "content": "October-November-December 1992"
        },
        {
            "spans": [
                {
                    "offset": 62317,
                    "length": 2
                }
            ],
            "boundingRegions": [
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            ],
            "content": "20"
        },
        {
            "spans": [
                {
                    "offset": 62320,
                    "length": 735
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            ],
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                }
            ],
            "content": "and parameterized based on the availability of suitable parameter estimates for walleye pollock and on the appropriateness of the given submodel for a boreal, ma- rine fish. An initial sensitivity anal- ysis of the model was performed. The model was most sensitive to errors in the respiration parame- ters. Only one of the respiration parameters produced a larger than 10% deviation when perturbed by 10%. This was expected since this parameter is an exponent to weight in the maximum respiration equation and would be expected to have a nonlinear effect on model outputs. The model will be used to better define seasonal, size, and interannual changes in daily ration to improve population consump- tion estimates by walleye pollock."
        },
        {
            "spans": [
                {
                    "offset": 63056,
                    "length": 62
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            ],
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                }
            ],
            "content": "The preceding information was provided by PATRICIA LIVINGSTON."
        },
        {
            "spans": [
                {
                    "offset": 63119,
                    "length": 31
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            ],
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            ],
            "content": "U.S. Fisheries Observer Program"
        },
        {
            "spans": [
                {
                    "offset": 63151,
                    "length": 44
                }
            ],
            "boundingRegions": [
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            ],
            "content": "Groundfish observer training and deployments"
        },
        {
            "spans": [
                {
                    "offset": 63196,
                    "length": 451
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            ],
            "boundingRegions": [
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            ],
            "content": "Through December 1992, the Observer Program trained 427 in- dividual observers for deployment to domestic fishing vessels and processing plants and ships. An additional 18 observers were trained by the University of Alaska Anchorage through a pilot training program funded by NMFS through the Alaska Sea Grant Program. The 445 observers made 681 ob- server trips. Observers sampled aboard 397 different fishing ves- sels and in 32 different processing"
        },
        {
            "spans": [
                {
                    "offset": 63648,
                    "length": 605
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            ],
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                }
            ],
            "content": "plants. The majority of observer deployments were made in groundfish fisheries off Alaska where observer coverage aboard vessels in the groundfish fishery is mandatory. Some observer de- ployments (roughly 3%-5% of the total number of deployments) were made on catcher-processor and mothership vessels in the Pa- cific whiting fishery off the north- west coast of the United States. Vessels in the Pacific whiting fish- ery carried observers voluntarily. Seventy percent of all observer de- ployments in 1992 were made by observers who had made previous observer trips for the program on domestic vessels."
        },
        {
            "spans": [
                {
                    "offset": 64254,
                    "length": 59
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            ],
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                }
            ],
            "content": "NPFMC approves changes to groundfish observer plan for 1993"
        },
        {
            "spans": [
                {
                    "offset": 64314,
                    "length": 155
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            ],
            "boundingRegions": [
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                }
            ],
            "content": "The NPFMC approved a num- ber of changes to the Observer Plan for groundfish fisheries in the BS-Al and GOA regions for 1993. The approved changes include:"
        },
        {
            "spans": [
                {
                    "offset": 64470,
                    "length": 133
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            ],
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            "content": "a. A change in the definition of observer coverage from a percent- age of fishing trip days to a per- centage of actual fishing days."
        },
        {
            "spans": [
                {
                    "offset": 64604,
                    "length": 285
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            ],
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            ],
            "content": "b. A revision of observer cover- age requirements for vessels 60- 124 ft length overall (LOA) to require that vessels take an ob- server on at least one fishing trip in each target fishery fished as part of the requirement for 30% coverage of each vessel's fishing days in the quarter."
        },
        {
            "spans": [
                {
                    "offset": 64890,
                    "length": 62
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            ],
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            ],
            "content": "c. A requirement that vessels 60-124 ft LOA fishing in the GOA"
        },
        {
            "spans": [
                {
                    "offset": 64953,
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            ],
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            ],
            "content": "sablefish longline fishery take an observer on at least one fishing trip in the eastern regulatory area of the GOA as part of their require- ment for 30% coverage of each vessel's fishing days during the quarter."
        },
        {
            "spans": [
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            "content": "d. The reduction from 100% ob- server coverage to 30% observer coverage by quarter for vessels 125 ft LOA and longer which fish with pots or traps."
        },
        {
            "spans": [
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                    "offset": 65314,
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            ],
            "content": "e. Changes to the conflict of interest standards for observers and observer contractors."
        },
        {
            "spans": [
                {
                    "offset": 65403,
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            ],
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            ],
            "content": "The changes will be im- plemented through a Regulatory Amendment to the BS-Al and GOA Groundfish Fishery Management Plans by mid-1993."
        },
        {
            "spans": [
                {
                    "offset": 65538,
                    "length": 35
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            ],
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            ],
            "content": "High-seas driftnet observer program"
        },
        {
            "spans": [
                {
                    "offset": 65574,
                    "length": 433
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            ],
            "boundingRegions": [
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            ],
            "content": "Members of the high-seas driftnet portion of the Observer Program continued work on pro- ducing reports summarizing ob- servations of the 1991 Republic of Korea squid and Taiwanese squid and large-mesh driftnet fisheries. Scientists reached agreement re- garding the U.S. and Taiwanese data, and a draft report was pre- pared in early October. The U.S. and Taiwanese report was formally accepted by participating nations in December."
        },
        {
            "spans": [
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                    "offset": 66008,
                    "length": 53
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            ],
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            ],
            "content": "The preceding information was provided by JANET WALL."
        },
        {
            "spans": [
                {
                    "offset": 66062,
                    "length": 21
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            ],
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            ],
            "content": "AFSC Quarterly Report"
        },
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            "spans": [
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                    "offset": 66084,
                    "length": 2
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            ],
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            "content": "21"
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            "content": "ITEMS"
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            ],
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            ],
            "content": "PICES HOLDS ANNUAL MEETING"
        },
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            "spans": [
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            ],
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            ],
            "content": "The First Annual Meeting of the North Pacific Marine Science Or- ganization (PICES) opened 12 Oc- tober 1992 in Victoria, British Columbia. Formation of this new organization heralds an unprece- dented opportunity for interna- tional scientific exchange and cooperation in the North Pacific Ocean. The meeting was held in association with the International Symposium on Climate Change and Northern Fish Populations, of which PICES was a sponsor. The symposium was a forum for dis- cussion of the relationship be- tween changing climate and fish population dynamics in northern latitudes."
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        {
            "spans": [
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            ],
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            ],
            "content": "In the PICES Plenary Session, representatives from scientific or- ganizations active in the North Pa- cific Ocean spoke to explain their programs and potential relation- ships to PICES. These included the World Ocean Circulation Ex- periment (WOCE); Joint Global Ocean Flux Studies (JGOFS); Global Ocean Ecosystems Dy- namics (GLOBEC); International North Pacific Ocean Climate Pro- gram (INPOC); Global Ocean Ob- serving Systems (GOOS); Bering Sea Fisheries Oceanography Co- ordinated Investigations (FOCI); and the International North Pacific Fisheries Commission (INPFC). Dr. Warren Wooster addressed the session as Chairman, along with"
        },
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            ],
            "content": "representatives of the People's Re- public of China (Xu Li), Japan (H. Hatanaka), and the United States (William Aron). Dr. Aron empha- sized the need to understand the complexity of the North Pacific Ocean and stressed the import- ance of countries cooperating on scientific matters. He also ac- knowledged that the United States strongly supports PICES and its links to other organizations such as GOOS and FOCI."
        },
        {
            "spans": [
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                    "offset": 67763,
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            ],
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            ],
            "content": "Other Center personnel who gave presentations at the sympo- sium included Richard Brodeur - \"Interdecadal Variability in Pelagic Nekton Biomass in the Central Subarctic Domain of the Northeast Pacific Ocean\"; Jack Helle - \"Influ- ence of Climate Change on Size and Age-at-Maturity of Some Pop- ulations of Chum Salmon in North America, 1972-91\"; (Helle also gave a poster session on the same subject); Steve Ignell - \"Variability in Ocean Temperatures and the Ranges of Flying Squid and Sal- monids of the Central North Pacific Ocean, 1978-1990\"; Gary Stauffer and Bernard Megrey - \"An Ex- ploratory Analysis of Associations Between Biotic and Abiotic Fac- tors and Year Class Strength of Gulf of Alaska Walleye Pollock\"; Brad Stevens - the poster session \"Effects of Temperature on Growth and Recruitment of King Crab, Paralithodes camtschtaticus, and Tanner crab, Chionoecetes bairdi\"; Sidney Taylor and Joyce Landingham - Effects of Estua-"
        },
        {
            "spans": [
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                    "offset": 68706,
                    "length": 986
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            ],
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                }
            ],
            "content": "rine Temperatures, Zooplankton Populations, Release Time and Diet, Intra-Annual Survival, and Size and Age at Maturity of 1980 Brood Chum Salmon at Auke Creek, Alaska\"; Taylor - \"Intra-An- nual Survival and Run Timing of Four Broods of Pink Salmon at Auke Creek, Alaska\"; Frank Thrower - \"Short-term Rearing of Chum Salmon Fry: Effect on Sur- vival, Age, Distribution, and Size of Returning Adults\"; and Anne York - \"The Relationship Between the Southern Hemisphere Oscillation Index and Survival of Juvenile Northern Fur Seals From the Prib- ilof Islands.\" William Heard served as moderator of the Discussion Session: Small Scale Perspec- tives. James Ingraham presented video computer simulations of sockeye salmon migrating at vari- ous compass headings and swim- ming speeds during their return to the Fraser River for 1982 and 1983. (The study resulted from coopera- tive research with the University of British Columbia.) Kevin Bailey and Jeffrey Napp also attended the symposium."
        },
        {
            "spans": [
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            ],
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            ],
            "content": "The United States will host the Second Annual Meeting of PICES at the NOAA facilities in Seattle, Washington, 25-30 October 1993."
        },
        {
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            ],
            "content": "This item was contributed by JAMES INGRAHAM of the REFM Division."
        },
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            "spans": [
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                    "offset": 69889,
                    "length": 30
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            ],
            "content": "October-November-December 1992"
        },
        {
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                {
                    "offset": 69920,
                    "length": 2
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            ],
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            "content": "22"
        },
        {
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                    "offset": 69923,
                    "length": 18
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            ],
            "content": "GENERAL ACTIVITIES"
        },
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            "spans": [
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                    "offset": 69942,
                    "length": 6
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            ],
            "content": "AWARDS"
        },
        {
            "spans": [
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                    "offset": 69949,
                    "length": 204
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            ],
            "content": "JOHN KARINEN was honored by the American Institute of Fisheries Research Biologists for his profes- sional participation as a District Di- rector and as a member of the Board of Control from 1989 to 1990."
        },
        {
            "spans": [
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                    "offset": 70154,
                    "length": 294
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            ],
            "content": "GEOFFREY LANG successfully defended his master's thesis, \"Food Habits of Three Congeneric Flatfishes: Yellowfin Sole Pleuronectes asper, Rock Sole P. bilineatus, and Alaska Plaice P. quadrituberculatus in the Eastern Bering Sea, 1984-1988\", at the School of Fisheries, University of Washington."
        },
        {
            "spans": [
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            ],
            "content": "B. ALAN JOHNSON was elected for a 3-year term as District Vice Chair for the Council of Chapters of the American Statistical Associ- ation. This district includes Alaska, Washington, Oregon, Cal- ifornia, Idaho, Montana, Utah, Wy- oming, Arizona, and New Mexico."
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            "spans": [
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            ],
            "content": "PUBLIC SERVICE AND COOPERATIVE ACTIVITIES"
        },
        {
            "spans": [
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            ],
            "content": "CHRISTINE KONDZELA met with scientists from the Alaska Depart- ment of Fish and Game's (ADF&G) Genetics Laboratory in Anchorage to compare procedures used in chum salmon electrophoresis analyses."
        },
        {
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            ],
            "content": "LINCOLN FREESE served as vol- unteer operator of the NOAA- sponsored hyperbaric chamber located at Bartlett Memorial Hospi- tal in Juneau, Alaska."
        },
        {
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            ],
            "content": "BRUCE WING assisted the Juneau-Douglas City Museum in identifying a variety of local marine invertebrates."
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            ],
            "content": "GEORGE SNYDER and STEVEN IGNELL hosted a high school stu- dent from Petersburg, Alaska, as part of a special project to bring students together with various pro- fessionals in science."
        },
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            ],
            "content": "K KOSKI was selected by the Juneau City and Borough to serve as a member of the Technical Ad- visory Committee on Wetlands. KOSKI also assisted the Juneau Chapter of Trout Unlimited prepare a proposal for restoring Duck Creek, a highly degraded stream in the Mendenhall Valley in Juneau."
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            "content": "KOSKI traveled to Beaufort, North Carolina, to meet with representa- tives from the Beaufort Laboratory and the Restoration Center in Washington, D.C., to finalize a draft document describing the Restora- tion Center's \"Habitat Restoration Research Program.\""
        },
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            ],
            "content": "JAMES MURPHY met with repre- sentatives from the University of Alaska Fairbanks, Juneau Center for Fisheries and Ocean Sciences, to discuss analyses of salmonid bycatch patterns near the Em- peror Seamount region."
        },
        {
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            ],
            "content": "ALLEN WOLMAN provided the Hale Kohala-House of the Whale, a new whale museum in Lahaina, Hawaii, with a selected series of cetological specimens for exhibi- tion. DALE RICE provided scien- tific advice for a series of signs to accompany the exhibits."
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            ],
            "content": "BILL HIGH attended a meeting of the Washington State Department of Wildlife and the NMFS North- west Regional Office to establish a diving plan for cooperative re- search at the Hiram M. Chittenden Locks in Seattle, Washington. The AFSC agreed to provide diving- related support for an experimen-"
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            ],
            "content": "tal sea lion deterrent system using underwater sound transducers. HIGH supervised a dive team com- posed of AFSC diving scientists and NOAA Corps officers during the successful installation of three sound generators downstream of the lock spillway."
        },
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            ],
            "content": "DEBORAH SIEFERT and MOR- GAN BUSBY visited the Plankton Sorting Center of the Sea Fisheries Institute (Morski Instytut Rybacki) in Szczcein, Poland, to prepare Polish colleagues for new plankton and ichthyology sample identifica- tion protocols."
        },
        {
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            ],
            "content": "The Japanese research vessel Kaiyo Maru was granted coopera- tive status by the AFSC to conduct coordinated walleye pollock re- search in the Bering Sea and Aleu- tian Basin with the Center's RACE Division."
        },
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            ],
            "content": "LEWIS QUEIROLO met with a rep- resentative from the Long John Sil- vers company to discuss international trade in fisheries products and to review research into world whitefish supplies."
        },
        {
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            ],
            "content": "LOH-LEE LOW participated as a fisheries consultant to the World Bank in China to review the techni- cal merits of a fisheries develop- ment project in southern China."
        },
        {
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            ],
            "content": "VIDAR WESPESTAD served on a panel of speakers for the Women's Fisheries Network Meeting in Seat- tle. The topic was \"Where Are the Fish? - A Resource Issue.\""
        },
        {
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            ],
            "content": "MEETINGS AND PRESENTATIONS"
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            "content": "WILLIAM HEARD attended the NMFS Aquaculture Task Force Meeting held in Silver Spring, Maryland."
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            "content": "AFSC Quarterly Report"
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            "content": "23"
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            ],
            "content": "JERRY REEVES gave a presenta- tion to the Alaska Crab Coalition at the Leif Erikson Hall, Ballard, on future crab abundance and on po- tential crab discard mortality prob- lems in the pot fisheries."
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            "content": "QUEIROLO met with the North Pa- cific Longliner's Association at the AFSC to review fishery manage- ment developments in the North Pacific Ocean and Bering Sea."
        },
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            ],
            "content": "LOW and ANNE HOLLOWED con- ducted a status of stocks preview of groundfish resources off Alaska for the Seattle fishing industry. WILLIAM ARON and RICHARD MARASCO attended."
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            ],
            "content": "RUSSELL NELSON, JANET WALL, and JERRY BERGER met with staff from the NMFS Alaska Region and members of the Amer- ican Factory Trawlers Association at the AFSC to discuss guidelines for the volumetric measurement of the size of groundfish catches taken by at-sea processors."
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            ],
            "content": "KOSKI and JOHN THHEDINGA presented a seminar to the U.S. Forest Service, ADF&G, and other interested agencies on 4 years of research on the Situk River/Hub- bard Glacier project."
        },
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            ],
            "content": "ALEX WERTHEIMER, as Chapter President, chaired a meeting of the American Fisheries Society (AFS) in Valdez, Alaska, and participated on a panel discussing biodiversity and fisheries management. ADRIAN CELEWYCZ also at- tended the meeting and presented the paper \"The Impact of the Exxon Valdez Oil Spill on Juvenile Salmon and their Prey in Nearshore Marine Habitats.\""
        },
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            "content": "JAMES OLSEN and KENNETH HENRY attended the U.S. Section"
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            ],
            "content": "Meeting of the Pacific Salmon Commission (PSC) held in Seattle."
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            "content": "OLSEN and JOHN EILER attended the PSC's Bilateral Transboundary Technical Committee Meeting held in Vancouver, British Colum- bia."
        },
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            "content": "HENRY and IGNELL also attended a bilateral meeting of the Chinook Salmon Technical Committee in Portland, Oregon."
        },
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            ],
            "content": "JOHN HELLE and JEROME PELLA attended the Bilateral Northern Boundary Area Techni- cal Committee Meeting of the PSC held in Seattle."
        },
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            "content": "OLSEN attended the PSC's Bilat- eral Research and Statistics Com- mittee Meeting held in Bellevue, Washington."
        },
        {
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            "content": "OLSEN and HELLE attended the PSC Meeting held in Vancouver, B.C. OLSEN also attended a meeting of the PSC Research and Statistics Committee."
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            ],
            "content": "TERRY SAMPLE met with the NPFMC Bering Sea Plan Team in Seattle to discuss the status of flat- fish stocks."
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            ],
            "content": "B. ALAN JOHNSON presented \"The Use of Q-Q Plots in Fisheries Management\" at the Joint Statisti- cal Meetings of the American Sta- tistical Society in Boston, Massachusetts."
        },
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            "content": "HENRY attended meetings of the U.S .- Canada Bilateral Chum Salmon Technical Committee in Vancouver, B.C."
        },
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            ],
            "content": "LOW, MARASCO, and MICHAEL DAHLBERG attended the Interna- tional North Pacific Fisheries Commission's (INPFC) Standing Committee on Biology and Re-"
        },
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            ],
            "content": "search Meeting held at the Alaska Fisheries Science Center (AFSC). RODERICK HOBBS and LINDA JONES represented the National Marine Mammal Laboratory (NMML) as U.S. advisors. LOW convened the technical sessions."
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            "content": "NEAL WILLIAMSON participated in the INPFC Working Group meet- ing in Tokyo, Japan."
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            "content": "CHRIS WILSON presented \"Inter- actions of Diel Migrators and Ocean Currents at a Small Sea Mount\" and DAVID SOMERTON presented \"The Fallacy of Swept- Area Methods: The Herding Ef- fect\" as part of the RACE Seminar series held throughout the year at the Center."
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            ],
            "content": "MARASCO chaired and RICHARD METHOT participated in a meeting of the Pacific Fisheries Information Network (PacFIN) Data Commit- tee of the Pacific States Marine Fisheries Commission in San Diego, California. The committee reviewed PacFIN operations and plans for implementation of the re- defined PacFIN system and dis- cussed funding priorities for 1993."
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            "content": "JEFFREY FUJIOKA and JON HEIFETZ attended the North Pa- cific Fishery Management Council (NPFMC) meeting held in Anchor- age."
        },
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            ],
            "content": "JOSEPH TERRY participated in a meeting of the NPFMC Bycatch Cap Committee. TERRY also at- tended the NPFMC Comprehens- ive Rationalization Committee Meeting in Seattle."
        },
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            "content": "JAMES HASTIE attended the NPFMC Rockfish Working Group Meeting held at the AFSC."
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            "content": "HASTIE and TERRY participated in a meeting of the NPFMC and"
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            "content": "October-November-December 1992"
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            "content": "24"
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            "content": "Alaska Region staff to discuss fu- ture management of NPFMC fish- eries."
        },
        {
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            ],
            "content": "LOW chaired the NPFMC Bering Sea-Aleutian Islands Groundfish Plan Team meetings held at the AFSC. LOWE chaired the NPFMC Gulf of Alaska Groundfish Plan Team Meetings. TERRY,"
        },
        {
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            ],
            "content": "WESPESTAD, RICHARD MERRICK, RICHARD FERRERO, GRANT THOMPSON, JIM IANELLI, and TOM WILDERBUER attended the NPFMC Groundfish Plan Team Meetings."
        },
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            "content": "MARASCO, METHOT, and SAN- DRA LOWE attended the NPFMC's Scientific and Statistical Commit- tee (SSC) Meeting in Anchorage for the final review of the groundf- ish stock assessments. LOWE and METHOT provided technical support for the stock assessment reviews."
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            "content": "STAUFFER attended the SSC and general PFMC meetings in Seattle. He also participated in a University of Alaska, School of Fisheries and Ocean Sciences, Advisory Council meeting in Fairbanks, Alaska."
        },
        {
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            "content": "LOW, LOWE, MARASCO, TERRY, and NELSON attended the De- cember meeting of the NPFMC in Anchorage."
        },
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            "content": "NELSON attended a public meet- ing in Anchorage held by the NPFMC on the bycatch of salmon and steelhead trout in trawl fisher- ies in Alaska. He also attended a meeting of the NPFMC Bycatch Cap Committee in Anchorage."
        },
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            ],
            "content": "HENRY attended the PFMC meet- ing in Seattle where he presented \"The Status of 1992 Ocean Salmon Fisheries.\" As chairman of the Salmon Technical Team (STT), he also presented STT position re-"
        },
        {
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            "content": "ports on a number of issues and worked on the STT Statistical Re- port."
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            "content": "HASTIE attended the PFMC's Groundfish Management Team and Individual Transfer Quota (ITQ) Committee Meetings in Port- land."
        },
        {
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            "content": "HASTIE attended the PFMC meet- ing in Seattle where he presented material to the Scientific and Sta- tistical Committee, the Advisory Panel, and the Groundfish Plan Team regarding initial analysis of options for initial allocation of sa- blefish ITQs."
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            "content": "METHOT chaired a meeting of the Groundfish Management Team of the PFMC in Portland, Oregon. METHOT also represented the Groundfish Management Team at the November meeting of the PFMC in Seattle."
        },
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            ],
            "content": "KARINEN presented the paper, \"Hydrocarbons in Intertidal Sedi- ments and Mussels from Prince William Sound, Alaska, 1977-1980: Characterization and Probable Sources\", at the Arctic Science Conference held in Valdez, Alaska."
        },
        {
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            ],
            "content": "MICHAEL MURPHY presented \"Partitioning of Smolt Yield in the Situk River, Alaska, to Predict Ef- fects of Glacial Flooding\" at the 1992 Coho and Chinook Work- shop in Boise, Idaho, sponsored by the American Fisheries Society."
        },
        {
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            ],
            "content": "At the University of Alaska Fair- banks, Juneau Center for Fisheries and Ocean Sciences, MICHAEL SIGLER presented the paper, \"On the Odds of Catching Fish With Longline Gear\"; STANLEY CARL- SON presented \"An Analysis of the Nekton Community Around the Subarctic Frontal Zone\"; and CHARLES FOWLER presented"
        },
        {
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            ],
            "content": "\"Do We Have the Scientific Basis for Management at the Ecosystem Level?\""
        },
        {
            "spans": [
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            ],
            "content": "SHARON HAWKINS and JOSEPH GREENOUGH met with Dr. Valeriy Yefanov from the Pacific Research Institute of Marine Fisheries and Oceanography (TINRO) in Sakhalin, Russia, to discuss oil lease procedures in the United States in order to identify possible courses of action regarding plans for possible large-scale oil and gas development off the northeast coast of Sakhalin Island, Russia, in a particularly rich fishing area. The people in the area have serious concerns regarding the possible effects of pollution on fish re- sources. Auke Bay Laboratory's procedure for analyzing samples for hydrocarbons was also ex- plained to Dr. Yefanovso so that a comparable analytical laboratory and monitoring program might be set up in Sakhalin."
        },
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            ],
            "content": "GREENOUGH met and conducted a tour of the ABL for Assistant Sec- retary and Deputy Administrator of NOAA Gennifer Joy Wilson, Donna Pagano of the NOAA Congres- sional staff, and Alaska Regional Director Steven Pennoyer."
        },
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            ],
            "content": "HEARD participated as a U.S. Panel Member in the 21st Annual Meeting and Technical Sympo- sium of the United States-Japan Natural Resources Group held in Kyoto and Choshi, Japan."
        },
        {
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            ],
            "content": "TAYLOR presented the paper, \"First Return of Hatchery-reared Sockeye Salmon Produced from Age-0 Smolts at Auke Creek, Alaska\", at the Northwest Fish Cul- ture Conference held in Wenatchee, Washington."
        },
        {
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            "content": "SIGLER presented \"On the Odds of Catching Fish With Longline"
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            "content": "AFSC Quarterly Report"
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            ],
            "content": "Gear\" at the workshop on Quanti- tative Gear Analysis and Modeling sponsored by the Institute for Ma- rine Research (Norway), Univer- sity of Washington (Seattle), and the University of Bergen's Institute of Fisheries and Marine Biology Department (Norway)."
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            "content": "JOHN BENGTSON attended the Ilth Annual Meeting of the Conven- tion for the Conservation of Antarc- tic Marine Living Resources (CCAMLR) Commission and Sci- entific Committee in Hobart, Tas- mania. BENGTSON also participated in a CCAMLR delegating meeting in Washington, D.C., to discuss the U.S .- Antarctic crab fishery."
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            ],
            "content": "FERRERO presented a summary of 1992 NMML harbor seal and killer whale research findings to the Kodiak Chamber of Commerce, Kodiak, Alaska, and attended the NPFMC meeting in Anchorage. OTTO also attended the NPFMC meeting."
        },
        {
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            ],
            "content": "ROBERT OTTO attended meetings of the Working Group on Fish Stock Assessment and the Scientific Committee of the CCAMLR in Ho- bart, Australia, where he presented \"A Preliminary Report on Research Conducted During Experimental Crab Fishing in the Antarctic Dur- ing 1992 (CCAMLR Area 48).\""
        },
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            ],
            "content": "MARASCO attended and chaired Session V: Considerations of So- cioeconomics and Allocation at the Lowell Wakefield Symposium on Management Strategies for Ex- ploited Fish Populations; BER- NARD MEGREY presented \"Evaluation of Risks Associated with Application of Alternative Har- vest Strategies for Gulf of Alaska Walleye Pollock\"; LOWE pre- sented \"Exploitation Strategies for the Atka Mackerel Resource of the Aleutian Islands\"; LOWE also"
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            ],
            "content": "served as rapporteur for Session I: The Role of Information in the Man- agement Process; THOMPSON presented \"Managing Bycatch in Inter-jurisdictional Fisheries\"; PELLA presented \"Utility of Struc- tural Time Series Models and the Kalman Filter for Predicting Conse- quences of Fishery Actions\"; SIGLER presented \"Harvest Policies for Sa- blefish in the Gulf of Alaska\"; and MEGREY presented \"Evaluation of Risks Associated with Application of Alternative Harvest Strategies for Gulf of Alaska Pollock\"; MEGREY also presented a Fisheries-Ocean- ography Coordinated Investiga- tions (FOCI) seminar entitled \"Relationships Between the Envi- ronment and Year Class Strength of Gulf of Alaska Pollock and a Pro- posal for Recruitment Prediction.\""
        },
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            ],
            "content": "NAPP presented \"Multi-disciplin- ary Research in Alaska: NOAA's Fisheries-Oceanography Coordi- nated Investigations\" at the 39th Eastern Pacific Ocean Conference at Mt. Hood, Oregon; NAPP also presented a FOCI seminar entitled \"The Coupling of Physics and Biology in Primary and Secondary Produc- tion: From Sunlight to Fish Food.\""
        },
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            "content": "BRODEUR presented \"The Import- ance of Various Spatial and Tem- poral Scales in the Interaction of Juvenile Salmon and the Marine Environment\" at the Workshop on Growth, Distribution, and Mortality of Juvenile Pacific Salmon in Sid- ney, British Columbia, Canada; BRODEUR also presented the poster \"Vertical and Horizontal Dis- tribution of Ichthyoplankton in the Northern Gulf of Alaska\" with WIL- LIAM RUGEN and MIRIAM DOYLE and coauthored a poster entitled \"The Potential Use of an Acoustic Echo System to Detect Mesoscale Features in the Ocean\" at the an- nual CalCOFI meeting in Monte- rey, California."
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            ],
            "content": "WESPESTAD lectured to the Uni- versity of Washington's \"World Fisheries\" class on the assessment and management of gadid and herring stocks; SHERYL COREY gave a lecture on the types of fish- ing vessels involved in Alaskan fisheries and the role of the ob- server program in collecting data for management of these fisheries."
        },
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            ],
            "content": "LOW attended a Seattle meeting of the International Pacific Halibut Com- mission to review the 1992 fishing season and to plan for 1993."
        },
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            ],
            "content": "METHOT and THOMAS LOUGHLIN presented \"Marine Mammals and Fisheries -- A Histor- ical Perspective and a Focus for Research\" at the School of Fisher- ies, University of Washington."
        },
        {
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            "content": "NELSON attended an informa- tional meeting in Seattle to review Terra Marine Research & Education's (Northwest Chapter) request for an Experimental Fish- ing Permit from the NMFS to con- duct an experiment on the feasibility of requiring retention of prohibited species bycatch in Alaskan trawl fisheries in 1993."
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            "content": "JAMES INGRAHAM presented a seminar at the AFSC titled \"The Great Sneaker Spill in the North Pacific.\" The Ocean Surface Cur- rent Simulation (OSCURS) numer- ical model was used to track 80,000 Nike sneakers spilled dur- ing a storm at lat. 48°N, long. 161°W on 27 May 1990."
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            "content": "LANG, PATRICIA LIVINGSTON, and MEI-SUN YANG presented the poster \"The Trophic Interactions Program at the AFSC: Objectives, Activities, and Products\" at \"Gutshop '92\" on Orcas Island, Washington."
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            "content": "26"
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            "content": "October-November-December 1992"
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            "content": "1"
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            "content": "PUBLICATIONS AND REPORTS BY CENTER AUTHORS"
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            "content": "BAKER, J.D., and C.W.FOWLER."
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            ],
            "content": "1992. Pup weight and survival of northern fur seals Callorhinus ursinus. J. Zool. (Lond.) 227:231-238."
        },
        {
            "spans": [
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                    "offset": 87193,
                    "length": 33
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            ],
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            "content": "BENGTSON, J.L., and B.S. STEWART."
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            ],
            "content": "1992. Diving and haulout behavior of crabeater seals in the Weddell Sea, Antarctica, during March 1986. Polar Biol. 12(6-7):635-644."
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            ],
            "content": "BRAHAM, H.W."
        },
        {
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            ],
            "content": "1992. Scientific investigations of the National Ma- rine Mammal Laboratory, 1990. Polar Rec. 28(164):43-46."
        },
        {
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                }
            ],
            "content": "BRODEUR, R., and R.C. FRANCIS"
        },
        {
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            ],
            "content": "1992. Food consumption of juvenile coho (Oncorhynchus kisutch) and chinook salmon (O. tshawytscha) on the continental shelf off Washington and Oregon. Can. J. Fish. Aquat. Sci. 49:1670-1685."
        },
        {
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                    "length": 43
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            ],
            "content": "CROLL, D.A., M.K. NISHIGUCHI, and S. KAUPP."
        },
        {
            "spans": [
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            ],
            "content": "1992. Pressure and lactate dehydrogenase func- tion in diving mammals and birds. Physiol. Zool. 65:1022-1027."
        },
        {
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            ],
            "content": "CROLL, D.A., A.J. GASTON, A.E. BURGER, and D. KONNOFF."
        },
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            ],
            "content": "1992. Foraging behavior and physiological adap- tation for diving in thick-billed murres. Ecology. 73:344-356."
        },
        {
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            ],
            "content": "DELONG, R.L., E.F. EDWARDS, P. WADE, and J.E. SISSON."
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            ],
            "content": "1992. Documenting migrations of northern ele- phant seals using day length. Mar. Mammal Sci. 8:155-159."
        },
        {
            "spans": [
                {
                    "offset": 88180,
                    "length": 35
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            ],
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            ],
            "content": "EBERHARDT, L.E., and J.M. BREIWICK."
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            ],
            "content": "1992. Impact of recent population data on histori- cal population levels of bowhead whales inferred from simulation studies. Rep. Int. Whaling Comm. 42:485-489."
        },
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            ],
            "content": "HOLLOWED, A.B."
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            "content": "1992. Spatial and temporal distributions of Pacific hake, Merluccius productus, larvae and estimates of survival during early life stages. CalCOFI Rep. 33, p. 100-123."
        },
        {
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            "content": "KIMURA, D.K."
        },
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            "content": "1992. Symmetry and scale dependence in func- tional relationship regression. Syst. Biol. 41(2):233- 241."
        },
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            "content": "KIMURA, D.K."
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            "content": "1992. Functional comparative calibration using an EM algorithm. Biometrics 48(4):1263-1271."
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            "content": "KIYOTA, M., I.R. LOUGHLIN, N. BABA, M. NAKAJIMA, and K. KOHYAMA."
        },
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            ],
            "content": "1992. Use of a tileamine hydrochloride-zolazepam hydrochloride mixture as an immobilizing agent for northern fur seals (Callorhinus ursinus). Mar. Sci. (Japan). 32:1-7."
        },
        {
            "spans": [
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            ],
            "content": "KOSKI, K V."
        },
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            ],
            "content": "1992. Restoring stream habitats affected by log- ging activities. In G. W. Thayer (ed.), Restoring the Nation's marine environment, p. 343-403. Maryland Sea Grant College Publ. UM-SG-TS-92-06. Maryland Sea Grant College, Skinner Bldg., Univ. of Maryland, College Park, MD 10742."
        },
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            ],
            "content": "MAJLUF, P., and M.E. GOEBEL."
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            "content": "1992. The capture and handling of female South American fur seals and their pups. Mar. Mammal Sci. 8:187-190."
        },
        {
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            "content": "McCONNAUGHEY, R.A., D.A. ARMSTRONG, B.M. HICKEY, and D.R. GUNDERSON."
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            "content": "1992. Juvenile Dungeness crab (Cancer magister) recruitment variability and oceanic transport during the pelagic larval phase. Can. J. Fish. Aquat. Sci. 49:2028-2044."
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            "content": "1992. Comparison of predator avoidance capabil- ities with corticosteriod levels induced by stress in juvenile coho salmon. Trans. Am. Fish. Soc. 121:544-547."
        },
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            "content": "PONGANIS, P.J., R.L. GENTRY, E.P. PONGANIS, and K.V. PONGANIS."
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            "content": "1992. Analysis of swim velocities during deep and shallow dives of two northern fur seals, Callorhinus ursinus. Mar. Mammal Sci. 8:69-75."
        },
        {
            "spans": [
                {
                    "offset": 90085,
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            "content": "THOMPSON, G.G."
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            "content": "1992. Management advice from a simple dynamic pool model. Fish. Bull., U.S. 90:552-560."
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