﻿{"Bibliographic":{"Title":"Southwest Fisheries Center Monthly Report: Third Quarter 1996","Authors":"","Publication date":"1996","Publisher":"Southwest Fisheries Center (U.S.)"},"Administrative":{"Date created":"06-26-2025","Language":"English","Rights":"CC 0","Size":"0007630740"},
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    "content": "350 atr 1996 c.8\nLIBRARY\nMAY 2 0 1997\nAR\nEF\nRC\n*\nUNITED\nRICA\nME\nSouthwest FISHERIES SCIENCE CENTER\nries Service Street Hawall\nHONOLULU LA JOLLA MONTEREY\nTIBURON\nREPORT OF ACTIVITIES\nThird Quarter 1996\nANTARCTIC ECOSYSTEM RESEARCH GROUP SWFSC to Host CCAMLR Meetings in 1997 1\nPage\nCOASTAL FISHERIES RESOURCES DIVISION Mitochondrial DNA Techniques Used to Identify Larval Rockfishes. 1\nMARINE MAMMAL DIVISION\nWhale Habitat and Prey Study Completed\n2\nHONOLULU LABORATORY\nOpen House Held Aboard Townsend Cromwell ......\n3\nPACIFIC FISHERIES ENVIRONMENTAL GROUP\nPaper Completed on Nearshore Assemblages of Young Rockfishes and Their Physical Environment Off Central California during the 1991-93 El Niño . .\n4\nPELAGIC FISHERIES RESOURCES DIVISION Annual Shark Abundance Survey Completed.\n8\nTIBURON LABORATORY 14th Annual Juvenile Rockfish Survey Completed.\n9\nINFORMATION TECHNOLOGY SERVICES\nUNIX Computer Specialist Vacancy Filled; Computer Upgrades Completed 13\nPUBLICATIONS 13\nSTATES O\nNOAA\nNISTR\nNATIC\nRATION\nUS\nDEPART\nSOUTHWEST FISHERIES SCIENCE CENTER\nCENTER ADMINISTRATION- La Jolla, California\nScience Director, SWR Michael F.Tillman\nDeputy Director Richard A. Neal\nPlanning Officer David J. Mackett\nInformation Technology Services Rob Bistodeau Executive Officer Sherrie L. Rasmussen\nLABORATORIES & DIVISIONS\nAntarctic Ecosystem Research Group, Chief Rennie S. Holt\nLa Jolla, California\nCoastal Fisheries Resources Division, Chief John R. Hunter\nLa Jolla, California\nMarine Mammal Division, Chief Robert L. Brownell, Jr.\nLa Jolla, California\nHonolulu Laboratory, Director\nHonolulu, Hawaii\nR. Michael Laurs\nPacific Fisheries Environmental Group, Chief George W. Boehlert Pacific Grove, California\nPelagic Fisheries Resources Division, Chief Gary T. Sakagawa La Jolla, California\nTiburon Laboratory, Director .......... Alec MacCall Tiburon, California\nThis report does not constitute a publication and is for information only. Its contents should not be cited or reproduced.\nReference to trade names does not imply endorsement by the National Marine Fisheries Service, NOAA.\nEditor: Maryann A. Rodriguez Layout: Roy S. Allen\nThe Report of Activities of the Southwest Fisheries Science Center is compiled at La Jolla from material submitted by the Center's staff. To change the delivery address of the Report of Activities, or to cancel your subscription, please notify Maryann Rodriguez at P.O. Box 271, La Jolla, CA 92038-0271. Telephone: (619) 546-7063.\nANTARCTIC ECOSYSTEM RESEARCH GROUP\nLa Jolla, California\nSWFSC to Host CCAMLR Meetings in 1997\nDivision Chief Rennie Holt and Fishery Biolo- gist George Watters were members of the U.S. delegation to the fifteenth meeting of the Com- mission for the Conservation of Antarctic Marine Living Resources (CCAMLR) held in Hobart, Tas- mania, October 21 to November 1, 1996. This report provides a summary of the results of the meeting.\nDuring the last fishing season, 8,826 tons of finfish, 118,714 tons of krill, 497 tons of crab, and 52 tons of squid were taken by commercial fisher- ies in CCAMLR waters. Almost all of the finfish taken was Patagonian toothfish (Dissostchus elegi- noides) harvested by Chile and France in waters around South Georgia and Kerguelen Islands.\nThe major harvesting issue faced by the com- mission was notification by six countries of their intent to initiate new fisheries in 1996/97: a squid fishery by the United Kingdom and Korea and longline fisheries for D. eleginoides by South Af- rica, Australia, New Zealand, and Norway. The longline fisheries will occur in several statistical subareas and divisions (management areas for CCAMLR). To regulate these new fisheries, CCAMLR developed an integrated approach which set regulations by area instead of for each country. Regulations included total allowable catch limits (1,980 tons in most areas), provisions to distribute fishing effort over a wide geographic area by permitting a nominal level of exploitation in several fine-scale areas (0.5 degree latitude by 1.0 degree longitude), requirements for vessel ob- servers and monitoring, and use of fishery prac- tices to reduce bird mortality.\nTwenty-one new or amended conservation measures (regulation measures) were adopted, including measures regarding D. eleginoides and mackerel icefish (Champsocephalus gunnari). The latter measure sets a catch limit of 1,300 tons and a by-catch limit for other species, prohibits use of bottom trawls, and prescribes a limited season from May to November 1997.\nThe commission noted that the U.S. vessel fish- ing for crab during the 1995/96 season ceased because the fishing company did not consider the fishery to be economically viable. Because sev- eral companies from the United States and other countries have expressed considerable interest in participating in the fishery, the commission con- tinued and modified a conservation measure regulating the crab fishery.\nThe commission was unable to agree to the text of a U.S .- sponsored measure governing the re- sumption of fisheries that have been closed or lapsed. Commission members and the Scientific Committee were urged to give priority attention to this topic at the next meeting.\nThe United States agreed to host several meet- ings at the Southwest Fisheries Science Center (SWFSC) in La Jolla, California, during the inter- cessional period. The meetings will include a group of scientists conducting research in CCAMLR statistical area 48 (the Peninsula, South Orkney Island, and South Georgia Is- land) and joint research in the Elephant Island area, a subgroup on statistical matters, and a working group on monitoring and management. (R. Holt, 619-546-5601)\nCOASTAL FISHERIES RESOURCES DIVISION\nLa Jolla, California\nMitochondrial DNA Techniques Used to Identify Larval Rockfishes\nGraduate student Cindy Taylor has used ge- netic methods to individually identify seven spe- cies of larval rockfishes which previously could be identified only collectively by a characteristic black spot on the dorsal fin.\nThe seven rockfish species in the study group were the widow (Sebastes entomelas), yellowtail (S.flavidus), black (S. melanops), vermilion (S. mini- atus), blue (S. mystinus), canary (S. pinniger), and olive (S. serranoides) rockfishes. Molecular identi- fication techniques were used to differentiate DNA sequence data (the first 800 base pairs of the cytochrome b gene) in this group. DNA frag-\n1\n10 base pair ladder\nWidow\nYellowtail\nBlack\nVermilion\nBlue\nCanary\nOlive\nFigure 1. Restriction patterns of mitochondrial cy- tochrome b gene for seven species of larval rock- fishes.\nments were then amplified and visualized using ethidium bromide under ultraviolet light (Fig. 1).\nAs seen in the Figure 1, species-specific recog- nition sites for three enzymes provided unique banding patterns for each of the seven species. The protocol is now being tested on multiple in- dividuals to determine intraspecific polymor- phism prior to using the technique to verify identifications of juveniles collected during rock- fish cruises conducted in May-June 1996. This promising and economical method of species identification using molecular techniques will al- low Tiburon Laboratory scientists to incorporate these additional rockfish species into a modified egg-production model for estimating biomass. (R. Vetter, 619-546-7125)\nMARINE MAMMAL DIVISION\nLa Jolla, California\nWhale Habitat and Prey Study Completed\nBlue whales are common visitors to the western Channel Islands off California from June through September, where they come to feed on dense swarms of krill. To learn more about how blue whales use these summer feeding grounds and what this activity might mean for the global recov- ery of blue whale stocks, the Marine Mammal Divi- sion conducted a Whale Habitat and Prey Study aboard the NOAA research vessel David Starr Jordan from July 10 through August 4, 1996. This study, like one in August of last year, was designed to study the distribution and activities of blue whales and other large whales, to survey the distribution of prey organisms (krill), and to measure physical and biological habitat variables that influence the distri- bution of whales and prey. The cruise was divided into a large-scale survey (10 days) between stations separated by 23 miles and a small-scale survey around the Channel Islands where blue whales feed (13 days).\nResearchers made 314 blue whale sightings, al- most all on the north side of San Miguel and Santa Rosa Islands (Fig. 1). Other whale sightings in- cluded 20 humpback whales, 16 fin whales, 11 minke whales, and 91 unidentified balaenopterids (probably blue whales, but may have been fin whales). Thirty-two blue whales were photo- graphed for identification with individuals in a catalog maintained by Cascadia Research. Biopsy samples for genetic analysis of stock affinity were collected from 19 blue whales, eight fin whales, six bottlenose dolphins, and one Pacific white-sided dolphin. Dolphin sightings included 99 common dolphin, 61 Risso's dolphin, and 40 Pacific white- sided dolphin.\nKrill were sampled with a three-frequency Sim- rad EK-500 echo sounder by scientists from the Antarctic Ecosystem Research Group. An Isaacs- Kidd midwater trawl was used to make oblique tows at the large-scale grid stations. A 1-meter mul- tiple opening-closing net environmental sampling system was used to sample observed acoustic tar- gets during the small-scale survey. Dense layers of the euphausiid Euphausia pacifica were found ex-\n2\n34.5°N\nWHAPS96 July 11 - August 3\n8\nO\n34.0°N\n4\nWhale Sightings\n33.5°N\nBlue\nA\nFin\nBlue or Fin\n0\nHumpback\nMinke\n121°W\n120°W\n119°W\nFigure 1. WHAPS96 on-effort tracklines and whale sightings.\ntending off the shelf edge on the north side of the islands. On the broad shelf off the northwest side of San Miguel Island, where blue whales were most abundant, dense patches of the larger euphausiid Thysanoessa spinifera were found.\nThe Channel Islands National Marine Sanctu- ary's research vessel Ballena was used to explore whale feeding behavior. Scientists from the Uni- versity of California at Santa Cruz spent three weeks tagging blue whales with radio tags that recorded time and depth and allowed tracking of a whale's position when it surfaced. Four whales were tagged and tracked during the study. Operations were hampered on many days by strong northwesterly winds. The Bal- lena was equipped with a two-frequency echo sounder to detect krill in the vicinity of the tagged whales. Recovered tags showed that whales dived into and moved through krill swarms both near the bottom on the shelf and off the shelf edge.\nOceanographic sampling consisted of 80 con- ductivity-temperature-depth (CTD) casts for 698 chlorophyll samples, 701 nutrient samples, and 119 primary productivity samples. These data showed the water over the shelf on the feeding grounds had been upwelled along the coast north of Point Conception, where strong winds blow from the northwest during summer. The upwelled water is cold and well-mixed and therefore is rich in nutrients and supports a high rate of primary productivity by phytoplankton.\nThe oceanographic and bathymetric characteristics of the northwestern Channel Islands result in dense patches of krill which make this a critical habitat for the world's largest stock of blue whales. (P. Fiedler, 619-546-7016)\nHONOLULU LABORATORY\nHonolulu, Hawaii\nPROTECTED SPECIES INVESTIGATION\nOpen House Held Aboard Townsend Cromwell\nAn open house, sponsored by the Honolulu Laboratory in celebration of the 125th anniver- sary of the National Marine Fisheries Service (NMFS), was held on Labor Day 1996 aboard the NOAA research vessel Townsend Cromwell. Long-time employees of the Honolulu Labora- tory characterized this celebration, held at Pier 9 of the Aloha Tower Marketplace in downtown Honolulu, as one of the laboratory's most suc- cessful open houses.\nAn estimated 1,000 visitors toured the 164-ft ship, learning firsthand from laboratory staff and Townsend Cromwell crew members about NMFS ocean-going research activities in the western Pacific and the vital role the Townsend Cromwell plays in these activities. Laboratory displays included a planktonic life-history poster in the wet lab, a longline economics poster with associated longline gear and lobster fishing gear on the foredeck, a scuba sled video presentation in the vessel's lounge area, a satel- lite oceanographic and fisheries recruitment poster and display in the electronics lab, and a turtle poster and display and a monk seal poster and \"critter cam\" video in the galley.\nTownsend Cromwell spends about 240 days at sea annually as the primary research platform in the Honolulu Laboratory's effort to conserve and recover the Hawaiian monk seal and marine turtle populations, to manage viable fishery stocks, and to protect marine life habitats. (M. Higa, 808-943-1211)\n3\nPACIFIC FISHERIES ENVIRONMENTAL GROUP\nPacific Grove, California\nPaper Completed on Nearshore Assemblages of Young Rockfishes and Their Physical Environment off Central California during the 1991-93 El Niño\nRockfishes (Sebastes spp.) are tremendously di- verse, dominate coastal benthic assemblages and support heavily exploited recreational and com- mercial fisheries in California. Although rockfish larvae are one of the most prevalent groups in near- shore ichthyoplankton assemblages, especially off central California, their abundance varies widely from year to year. Warm climatological events like El Niño can have substantial effects on recruitment by altering reproduction, larval distribution and abundance, and prey and predator production.\nA study to evaluate distribution and abundance of rockfish larvae and associated hydrography on small spatial (<20 km) and temporal (biweekly to monthly) scales was conducted in an upwelling center north of Monterey Bay during an extended El Niño event. Secondary objectives were to assess hatch date distributions of early larvae and pelagic juveniles (May-July) of common species, potential larval transport mechanisms, and subsequent strength and timing of nearshore juvenile recruit- ment. This project was supported by the California Sea Grant Program, with collaboration among re- search biologists from the Pacific Fisheries Environ- mental Group (Mary Yoklavich), Moss Landing Marine Laboratories (Valerie Loeb, Mary Nishi- moto, Brendan Daly, and Greg Cailliet), and Cali- fornia Department of Fish and Game (David VenTresca).\nThe prolonged El Niño event resulted in anomal- ously warm, low salinity water to depths over 50 m in nearshore areas, suggesting onshore displace- ment of the California Current. Upwelling was re- duced and delayed, without the usual persistent upwelling plumes in the survey area. Larval rock- fish abundance was similar in both years (winter- spring of 1991-92 and 1992-93), peaking in early February, and was among the highest observed when compared with California Cooperative Oce- anic Fisheries Investigations (CalCOFI) estimates from central California for 1951-84. Based on larval ages, the dominant species (shortbelly rockfish) hatched from December to April, with median\nhatch dates in mid-February both years. Growth rates of shortbelly rockfish larvae did not differ among months or between years. Relative to 1993, however, rockfish larvae were more abundant and larval shortbelly rockfish were significantly larger at onshore stations in 1992. This coincided with onshore advection of water (namely, reversals in wind direction, warmer and less saline water) dur- ing the onset of the El Niño event, suggesting near- shore retention of larvae. Initiation of upwelling in March and April 1993 and fewer larvae at onshore stations suggest greater offshore transport during the second year.\nExtremely low numbers of pelagic juvenile rock- fish were encountered in summer months of 1992 (2.3 fish per trawl in 56 midwater trawls). In 1993 pelagic juveniles were 20 times more abundant (75.1 fish per trawl in 64 midwater trawls), comprised twice as many taxa, and were substantially larger than in 1992. Juvenile shortbelly rockfish collected were born late in the season during both years (me- dian hatch dates of April 21, 1992 and March 31, 1993); upwelling occurred coincidentally during this period in 1993 but not in 1992. Limited infor- mation on abundance of chaetognaths, a potential predator, indicated high numbers nearshore in Feb- ruary 1992. Much higher survival and recruitment of juveniles in 1993 were likely due to increased offshore transport and perhaps lower predation during the larval stages. The results of this study have been published in Fishery Bulletin, U.S. (M. Yoklavich, 408-648-9036)\nSynopsis of 50 Years of Coastal Upwelling Indices Completed\nThe frictional stress of equatorward wind on the ocean's surface, in concert with the earth's rotation, causes water in the surface layer to move away from the west coast of continents. This water is replaced by water which upwells near the coast from depths of 50-100 m and more. Upwelled water is cooler and more saline than the original surface water and typically has much higher levels of nutrients that are key to sustaining the high biological productiv- ity of eastern boundary current marine ecosystems. Temporal variations in upwelling over seasonal to interannual and longer periods due to large-scale shifts in wind patterns and atmospheric systems are linked to variability in fish populations and other biological components in coastal ocean ecosys- tems.\nSince the early 1970s, PFEG has generated indices of the intensity of large-scale, wind-induced coastal upwelling at 15 standard locations along the west\n4\ncoast of North America. The indices are based on estimates of offshore Ekman transport driven by geostrophic wind stress, which are derived from six-hourly synoptic and monthly mean surface at- mospheric pressure fields. The pressure fields are interpolated from Northern Hemisphere surface observations and are provided by the U.S. Navy Fleet Numerical Meteorology and Oceanography Center, Monterey, California.\nTwo sets of upwelling index time series are cal- culated. One set (1967-present) is comprised of daily and weekly means of six-hourly upwelling indices. Availability of synoptic data prior to 1967 is limited. The second set of indices contains monthly time series derived from monthly mean pressure fields (1946-present). The synoptic fields used to construct the monthly mean fields prior to July 1962 were acquired from a variety of sources, rather than the oceanography center. Four NOAA Technical Memoranda describe the methods used to calculate the indices and summarize the up- welling time series; the latest in this series, which is now available, describes the history and derivation of the upwelling index and highlights 50 years of the series.\nPFEG regularly produces and provides index time series to scientists and managers concerned with marine ecosystems and biota. The indices are distributed to about 50 regular users each month, and each year 40-50 requests are received for up- welling data or information on how they are de- rived (Fig. 1). These series have been used in scores of studies and scientific publications, including studies to describe coastal circulation, El Niño/Southern Oscillation, and climate change, as well as studies of linkages between environmental\nMONTHLY DISTRIBUTION\nACADEMIC\nACADEMIC\nFOREIGN\nFOREIGN\nPRIVATE\nPRIVATE\nSTATE GOVERNMENT\nSTATE\nGOVERNMENT\nNOAA/NMFSA\nNOAA/NMFS\nOTHER FEDERAL GOVERNMENT NOAA\nOTHER\nOTHER FEDERAL GOVERNMENT\nOTHER NOAA\nFigure 1. Charts showing distribution of users of upwelling index data and related information, by their type of affiliation. The left-hand chart shows distribution of individuals receiving upwelling products on a monthly basis. The right-hand chart shows distribution of special requests for upwelling products or information.\nand biological variability of zooplankton, crabs, groundfish, small pelagics, salmon, and marine birds.\nIn the latest report, the shape of the annual cycle is estimated at each of the 15 standard upwelling locations by a least-squares regression of the daily data from 1967-91 to an annual and semiannual harmonic signal. The characteristics of the annual upwelling cycle at each point are summarized in Figure 2. The North American west coast appears to break down into three distinct upwelling regions: Baja California (21-30°N), continental United States (30-48ºN), and British Columbia and Alaska (48- 60ºN). The annual range off Baja California is rela- tively small, with wintertime values of less than 50 m2/s/100m and summer maxima of 75-150 m3/s/100m. This region is also characterized by secondary minima and maxima in August and Oc- tober, respectively (more technically a pair of inflec-\n60°N 149°W\nB\n57ºN 137°W -\nB\n฿\n54°N 134°W -\nB\nB\nB MAXIMUM\n51°N 131°W -\nB\nB\nB\nB\n45°N 125°W -\nB\n42°N 125°W -\nB\nB\n39°N 125°W -\nB\nB\n36°N 122°W-\nB\nB\n33°N 119°W -\nB\nB\n30°N 119°W -\nB\nB\n27°N 116°W -\nB\nB\n24°N 113°W -\nB\nB\n21°N 107°W -\nB\nB\n-200\n-100\n0\n100\n200\n60°N 149°W\nB\nB\n60°N 146°W -\nB\nPHASE\ni B\n57°N 137°W -\nB MAXIMUM\n54°N 134°W.\nB\nB\n51°N 131°W\nB\nJ 2nd MAXIMUM\n48°N 125°W\nB\nB\n45°N 125°W\nB\nB\n42°N 125°W\nB\nB\n39°N 125°W\nB\n36°N 122°W\nB\nIB\n33°N 119°W\nB\n30°N 119°W\nB\nJ\nB\n27°N 116°W -\nB\nJ\n1\nLB\n24°N 113°W- B\nJ\nJ\nIB\n21°N 107°W-B\nB\nJ\nJ\n1 MAY\n1 JUL\n1 SEP\n1 NOV\n1 JAN\nFigure 2. Characteristics of annual cycle of daily upwelling, based on biharmonic fits for period 1967- 91. The upper panel shows maximum and mini- mum amplitudes of annual cycle at each position. The lower panel shows calendar dates of maxima and minima at all locations, and secondary maxima and minima for 21-30°N. Units are m3/s/100m.\n5\nAMPLITUDE\nB\nB MINIMUM\n48°N 125°W -\nB MINIMUM\nBI\nJ 2nd MINIMUM\ntion points in the annual curves at 27°N and 30°N). In contrast, annual cycles north of 30°N have a strong sinusoidal (12-month harmonic) signature. The greatest upwelling rates occur at 33ºN, with a linear decrease in the maximum upwelling indices north to about 54ºN. The greatest annual range occurs at 39ºN. Maximum values north of Wash- ington are about zero, and occur in June-July. Mini- mum indices of about -100 m3/s/100m occur in about January 1.\nThe time of minimum upwelling occurs within about 15 days of January 1 along the entire coast. The time of strongest upwelling increases from late April off Baja to mid-July off Oregon and Washing- ton, a lag of about 80 days (approximately 30 km per day). The phase of maximum upwelling corre- sponds with certain climatological surface ocean conditions along the coast and oceanographic data which were developed by SWFSC scientist Ron Lynn from CalCOFI sampling data. Maximum sa- linity occurs in May off northern Baja, in June-July off southern California, and in July and August along central California. Salinity maxima along southern Baja occur in fall, coinciding with the sec- ondary upwelling maximum. The temperature mimima found by Lynn in upwelling regions, typi- cally in April-May, is impacted substantially by the seasonal surface heat flux and agrees less well with the time of greatest upwelling. The relationship between the annual cycles of upwelling and tem- perature and salinity is also complicated by advec- tion along the coast and is influenced by the surface water masses of the California Current.\nAnnual cycles for the daily and monthly data sets are compared in Figure 3. It appears that upwelling indices derived from monthly pressure fields over- estimate the magnitude of upwelling and down- welling based on monthly averages of the daily values. This discrepancy is most evident during the months of the highest absolute values at each loca- tion (for instance, monthly indices overestimate winter downwelling at the northern points and summer upwelling at the southern points). Monthly stress calculations overestimate the daily upwelling rates off Alaska by as much as 130%, and off southern and Baja California by a factor of two. With 25 years of simultaneous daily and monthly data now available, our preliminary interpretation, as reflected in Figure 3, is that the relative discrep- ancy between the two data sets varies with season as well as latitude. A more complete analysis is being developed that will allow the monthly indices to be adjusted temporally and spatially to reflect more realistic estimates of coastal upwelling.\n100 -\n57ºN 137°W\n0\n-100.\n-200-\n-300-\nUPWELLING INDICES (m/s/100m 3 coastline)\n100 -\n48°N 125°W\n0\n-100-\n-200-\n-300-\n300-\n200-\n36°N 122°W\n100-\nO\n-100-\n200-\n24°N 113°W\n100-\n0\n-100\nJan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec\nFigure 3. The annual cycle of upwelling at repre- sentative west coast locations. The diamonds de- note the mean of the monthly upwelling indices for each calendar month for the period 1967-91. The vertical bars denote +/- one standard deviation for each calendar month. The bold curve is a bihar- monic fit to the daily upwelling indices for the period 1967-91. The shaded area around the bihar- monic curve denotes +/- one standard error, calcu- lated for each Julian Day.\nRapid advancements in computing and commu- nications since the initial development of the up- welling index over two decades ago have led to more accurate and efficient calculation and distribu- tion of the upwelling products. The upwelling in- dices and many other PFEG data products are now available on the Internet at http://www.pfeg.noaa. gov.\nAlthough the upwelling indices are by far the most popular product PFEG derives from the sur- face pressure fields, they are but one of several atmospheric and oceanic products generated from the six-hourly pressures. A future technical memo- randum will summarize some of the more impor- tant products. (F. B. Schwing, 408-648-9034)\nCooperative Workshop Examines the Role of Environmental Data in Fisheries\nThe role of NMFS in research, management, and enforcement of regulations for fisheries and pro-\n6\ntected species involves a broad range of activities affected by environmental variability. A workshop funded by NOAA's Earth System Data and Infor- mation Management Program was co-convened by PFEG Oceanographer George Boehlert and Jim Schumacher of the Environmental Research Labo- ratories' Pacific Marine Environmental Laboratory at the PFEG facility in Pacific Grove, California. The participants examined how environmental data are applied to practical problems in fisheries research and management. The objectives of the workshop were to assess the current and future needs for environmental databases (oceanographic, atmos- pheric, remote sensing, model output, geological) in fisheries and fisheries-related ecosystem research, to identify data sources and formats, and to recom- mend ways to facilitate access to the data.\nMore than 50 scientists with expertise in fisheries, physical sciences, environmental data, and comput- ers participated in the meeting. Presentations by fisheries scientists described uses of environmental data in fisheries research and management; physi- cal and computer scientists described sources of environmental data, including that from ocean models and geophysical investigations, and how they are managed. Internet and video-based dem- onstrations described ocean model output and data management systems.\nOpen discussions were a very important element of the workshop; four working groups addressed real-time or near real-time environmental data ap- plications to fisheries, retrospective environmental data applications to fisheries, applications of oceanographic and atmospheric model output to fisheries, and data delivery systems, data accessibil- ity criteria, and formats. An additional working group was convened to address opportunities and mechanisms for inter-agency cooperation.\nThe working groups developed more than 40 recommendations. A common thread among the working groups was the need for improved com- munication among fisheries scientists, oceanogra- phers, and the physical and computer scientists who provide model and environmental data. Con- sensus was that follow-up workshops, focused on specific topics (for example, model data applica- tions, remote sensing, and fisheries), be developed. Applications of new environmental technology, in- cluding remotely sensed data, multi-beam sonar technology, and numerical model output, were highly recommended. Parallel efforts among dif- ferent agencies were identified, leading to sugges- tions to promote collaboration and increase the\ninteroperability among existing environmental data access systems. The working group on part- nerships for fisheries oceanography recognized the critical need for cooperation and collaboration to identify and fully utilize all environmental data and to model output that could be beneficial to NOAA's environmental stewardship mission.\nThe workshop proceedings will be published as a NOAA Technical Memorandum. A short workshop report and the full text of recommen- dations are available on the Internet at http://www.pfeg.noaa.gov/workshop. (G. Boehlert, 408-648-8447)\nPFEG'S Historical Data Archives Transferred from Navy Computers to IT-95 System\nBeginning with its inception in 1969, PFEG estab- lished, and has maintained, a strong cooperative relationship with the Navy's Fleet Numerical Mete- orology and Oceanography Center. The Navy pe- riodically seeks practical comments on model development results from PFEG research staff, for whom the center has been a consistent source of observational data sets and meteorological and oceanographic model products.\nOceanographic and meteorological data are at the heart of PFEG's research. While collecting and processing data for its research efforts, PFEG has made extra efforts to make data available for fisher- ies and other researchers. Researchers chose not to repeatedly access and rely on the formal data re- sources of the center, which include hundreds of products and thousands of observations of little or no interest to PFEG researchers. Instead, PFEG sci- entists extracted subsets of interest from those ar- chives and maintained their own informal archives of data and model products. The data and products were retained and used on center systems in the form as acquired, using applications PFEG devel- oped along with tools developed by the Navy to produce a suite of monthly and special products (for example, the Bakun Upwelling Index).\nThe center has undergone a transition to modern- ize its computer systems to Cray supercomputers and Sun workstations. In response to those changes, PFEG transferred its historical data ar- chives to the IT-95 server at its Pacific Grove facility and established communication paths to assure consistent and ready access to data and products from the Navy. Successful conversion of monthly and special applications, completion of the PFEG archival transfer, and establishment of near real-\n7\ntime data acquisition from the center concentrate the processing action onto the IT-95 server. This will also allow for development of new index time series from the archives by modifying computer programs presently being converted. (A. Stroud, 408-648-9037)\nPELAGIC FISHERIES RESOURCES DIVISION\nLa Jolla, California\nTUNA/BILLFISH ASSESSMENT PROGRAM\nAnnual Shark Abundance Survey Completed\nA survey to index shark abundance within the Southern California Bight was conducted from Au- gust 10-29, 1996, aboard the NOAA research vessel David Starr Jordan. Survey objectives were to (1) collect data on shark abundance for population in- dexing, (2) tag and release live and healthy sharks, (3) collect biological data and samples, including reproductive organs, muscle and heart tissue, stom- ach contents, and whole specimens, for several an- cillary studies, and (4) collect data on by-catch species.\nForty-four longline sets were made within the Southern California Bight, involving a total of 6,211 hooks. Thirty-three sets were made using wire ca- ble leaders during daylight hours, and 11 sets with monofilament nylon were made during nighttime hours. Total catch was 205 shortfin mako sharks (Isurus oxyrinchus), 689 blue sharks (Prionace glauca), 74 pelagic stingrays (Dasyatis violacea), and one swordfish (Xiphias gladius). One California sea lion (Zalophus californianas) and one common mola (Mola mola) were foul-hooked (snagged) during fishing operations. Both were released without harm. Overall catch rate of sharks was 14.4 sharks per 100 hooks. Catch rate for shortfin mako sharks aver- aged 4.0 per 100 hooks but was more than double- 8.5 per 100 hooks-in the most productive survey areas.\nA total of 556 blue sharks and 164 shortfin mako sharks were tagged and released for population and movement studies. Necropsies were conducted on 52 blue sharks, 31 shortfin mako sharks, and one swordfish. Heart, liver, gonad, and muscle tissue\nwere collected for a variety of studies including reproductive condition, DNA analysis, heavy metal and DDT concentrations, and biochemical analysis. Stomachs were collected for feeding pattern studies. Fifty-three pelagic stingrays were collected for age- ing and growth studies. Four whole blue sharks were collected for observer shark identification and anatomy training. Physiological studies of swim- ming energetics were conducted on four shortfin mako sharks and six pelagic stingrays in a variable- speed water tunnel aboard the vessel.\nMexican scientists from Instituto Nacional de la Pesca, Universidad Autonoma de Baja California Sur, and Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, and U.S. scien- tists and student volunteers from NMFS, California Department of Fish and Game, Scripps Institution of Oceanography, Moss Landing Marine Labora- tory, Monterey Bay Aquarium, and California State University at Los Angeles participated in the cruise. (D. Holts, 619-546-7186)\nNewsletters Now Available on the World Wide Web\nTwo popular newsletters produced by the Pe- lagic Fisheries Resources Division are now available on the World Wide Web. Each issue of the Tuna Newsletter and the Billfish Newsletter is posted to the SWFSC's Web site at about the same time that it is mailed to regular subscribers. Back issues are avail- able for 1995 and 1996. The electronic versions of these newsletters contain all the original text, tables, and figures, and other useful information.\nThe Tuna Newsletter is published quarterly by the Southwest Region and SWFSC to inform constitu- ents and the general public of the status of U.S. tuna fisheries, the canned tuna industry, and research conducted at the SWFSC and associated organiza- tions. Each issue also provides a calendar of up- coming meetings and conferences and summarizes tuna news stories from around the world.\nThe Billfish Newsletter is an annual publication produced by the SWFSC as a service to the interna- tional billfish angling community, with an empha- sis on billfish angling in the Pacific, Indo-Pacific and Indian oceans. The results of the International Bill- fish Angler Survey and the Cooperative Marine Game Fish Tagging Program, which are managed by the SWFSC, are described in each issue.\nThe Tuna Newsletter and the Billfish Newsletter can be found on the Web at http://swfsc.ucsd.edu. (A. Jackson, 619-546-7046)\n8\nTIBURON LABORATORY\nTiburon, California\nGROUNDFISH ANALYSIS INVESTIGATION\n14th Annual Juvenile Rockfish Survey Completed\nA research cruise aboard the NOAA research vessel David Starr Jordan was conducted by fishery biologists of the Groundfish Analysis Investigation from May 17 to June 20, 1996. The survey (DSJ- 9606) was designed to study the distribution and abundance of pelagic-staged juvenile rockfish (Se- bastes spp.) in an attempt to identify factors contrib- uting to variability in annual spawning success.\nJuvenile rockfish samples were obtained from midwater trawls conducted at night during three sweeps of an area off the central California coast from Monterey Bay (36ºN) to Point Reyes (38º 10'N) (Fig. 1). A modified Cobb midwater trawl with a 26-m headrope and 1-cm liner was towed for 15 minutes at depth at five or six stations per night. Ship speed was maintained at 2.7 knots while trawl- ing. Target headrope depths were 7, 30 and 100 m and were recorded during each tow by a time-depth recorder attached to the upper bridle.\n+\n38°N\nx\n+\n+\n+\n37°N\n+ CTD Only\nMidwater Trawl & CTD\n124°W\n123°W\n122°W\nFigure 1. Map of midwater trawl and CTD stations during juvenile rockfish survey DSJ-9606.\nOne hundred sixteen midwater trawls were com- pleted. Most of the juvenile rockfish sampled were small (15-25 mm), although the \"blackspot group,\" which consisted of blue, yellowtail, and black rock- fish, ranged in length from 30-40 mm. For the third straight year, juvenile rockfish catch was low (Table 1, see page 10). The total non-shortbelly rockfish catch was the lowest since the three-sweep method was instituted in 1986; the catch of invertebrates and other fish species was also low.\nTwo hundred ninety conductivity-temperature- depth (CTD) casts were completed throughout the day in the vicinity of the midwater trawl transects and at each night trawl station. Temperature and salinity data were obtained and chlorophyll and light levels were measured. Water samples were taken twice daily for fluorometry and salinity cali- brations. Upwelling was intense during the cruise with sea surface temperatures in the 9-10℃ range (Fig. 2). Chlorophyll, light level, and current data will be analyzed at a later date.\nOne of several ancillary projects was to deter- mine the distribution and abundance and diel mi- gratory behavior of larval crabs (Cancer spp.) and rockfishes relative to the hydrographic features on the shelf between Bodega Head and Point Arena. Twenty-two Tucker trawls and nine manta tows were conducted in the Gulf of the Farallones and\n10.2\n:6\n38°N\n8'6\n11.4\n12.\n37°N\nDSJ9606\nSweep 3\nTemperature\n(℃) at 2 m\n122\n12.2\n124°W\n123°W\n122°W\nFigure 2. Contours of sea surface temperature (℃) measured by CTD probe during the third sweep of juvenile rockfish survey DSJ-9606. CTD stations are represented as + symbols. Contours with hatch marks represent cooler waters.\n9\nTable 1. Number of pelagic young-of-the-year rockfish collected by midwater trawl at standard stations and depths during May-June cruises (1986-96).\nSpecies\n1986\n1987\n1988\n1989\n1990\n1991\n1992\n1993\n1994\n1995\n1996\nShortbelly\n9,104\n6,865\n107,962\n1,598\n4,479\n2,422\n2,838\n2,287\n966\n275\n1,821\nChilipepper\n54\n586\n4,418\n24\n66\n343\n90\n1,251\n3\n32\n14\nBrown\n470\n10\n3\n19\n265\n7\n1,226\n17\n5\n16\nWidow\n11\n424\n257\n13\n296\n623\n1\n101\n23\n26\nSquarespot\n4\n177\n380\n16\n649\n47\n70\n25\n-\n-\nCanary\n46\n71\n162\n39\n23\n618\n14\n3\n1\nBlue\n4\n196\n366\n63\n38\n220\n37\n11\n7\n5\nStripetail\n2\n194\n30\n6\n22\n175\n5\n315\n9\n6\n2\nBocaccio\n327\n106\n60\n22\n44\n114\n5\n26\n4\n3\n1\nYellowtail\n22\n85\n69\n31\n27\n281\n5\n31\n7\n30\n3\nCopper complex\n9\n9\n1\n-\n1\n15\n116\n82\n2\n7\n2\nPygmy\n2\n15\n9\n12\n10\n62\n8\n2\n3\n-\n1\nHalfbanded\n1\n9\n2\n77\n8\n1\n5\n2\n5\nBlack\n1\n22\n19\n5\n4\n34\n6\n2\n6\n6\nOlive\n-\n4\n2\n6\n18\n1\n9\n9\n-\n-\nCowcod\n1\n17\n1\n1\n-\n-\n-\n-\n-\n-\n18\n4\n-\nI\n-\n-\n-\n1\n-\nSabastomus\n2\n7\n3\n1\n3\n8\n-\n1\n2\nSplitnose\n1\n4\nPuget Sound\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n8\n2\n-\n-\n-\nQuillback\n2\n1\n4\n1\n1\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n-\n1\n1\n-\n-\nGreenspotted\n-\n-\n1\n-\n-\n-\n-\n-\nUnknown\n40\n-\n-\n-\n4\n49\n31\n84\n13\n66\nTotals\n10,104\n8,837\n113,748\n1,841\n5,779\n5,290\n3,242\n5,466\n1,137\n414\n1,945\n-\n-\n-\n-\n7\n5\n-\n-\n-\n1\n22\n18\n2\nGrass\n1\n1\n-\n-\n-\n-\nVermillion\nCopper\nGreenstripe\n3\nChina\n2\nsouthwest of Point Arena. The depth bins for the Tucker trawl were 0-40 m and 40-100 m, as bottom depth allowed. The catch will be identified at a later date and the data will be used to determine the influence that upwelling-relaxation episodes have upon distribution of juvenile rockfish and crab megalopae. (D. Woodbury, 415-435-3149, ext.218)\nTwo Surveys Conducted to Monitor Offshore Dump Site\nFishery biologists in the Groundfish Analysis Investigation completed two surveys to monitor possible effects on marine life of dredged materials at an offshore disposal site, known as the San Fran-\n10\n-\n-\n6\n1\n-\n-\n5\n5\n5\n-\n-\n-\n-\n19\nSharpchin\nDarkblotched\n2\n-\n-\n-\n1\n2\n6\n-\n1\n3\nBank\ncisco deep ocean dredged materials disposal site, located 25 nmi west of the Farallon Islands. These surveys involved collaboration with ornithologists from the Point Reyes Bird Observatory and H.T. Harvey and Associates, and scientists from the U.S. Environmental Protection Agency and the U.S. Army Corps of Engineers.\nThe first survey occurred June 2-7, 1996, during the Tiburon Laboratory's annual juvenile rockfish survey aboard the NOAA research vessel David Starr Jordan. Both the disposal site and a control site 25 nmi south were surveyed. Thirty-seven midwa- ter trawls were conducted at night to collect juvenile fish and euphausiids. The catch was dominated by offshore species, such as squid (non-Loligo sp.), myctophids, and sergestids.\nThe second survey was conducted September 17-22, 1996, aboard the Moss Landing Marine Labo- ratory's research vessel Point Sur. Net sampling of juvenile fish and euphausiids was conducted at the disposal site stations and additional stations along the perimeter of the disposal site stations. Many unidentified juvenile rockfish were collected which comprise a \"summer spawning\" group. One excep- tional catch of euphausiids occurred in an area a few miles east of the disposal site, where a large concen- tration of birds and marine mammals also was ob- served.\nOrnithologists from H. T. Harvey and Associates and the Point Reyes Bird Observatory recorded the distribution and abundance of sea birds and marine mammals during daytime transects between CTD stations. Birds and mammals were sparse where depths exceeded 1500 m (including the disposal site), but were abundant along the upper shelf break (to 400 m depth). Especially large concentrations of birds and cetaceans were encountered at the upper end of Pioneer Canyon. About 20 species of birds, three species of pinnipeds, four species of whales, and four species of dolphins were observed, which is not unusual for the early fall in this region.\nSeveral physical oceanographic parameters were also measured during the cruise, including currents, temperature, and salinity. The information col- lected will be analyzed to help determine whether disposals have affected abundances of important small fishes, invertebrates, marine mammals, and sea birds, and if their physiological condition was poorer at the disposal site than other areas. (D. Woodbury, 415-435-3149, ext.218)\nGROUNDFISH PHYSIOLOGICAL ECOLOGY INVESTIGATION\nPhysiological Ecology of Juvenile Fall-Run Chinook Salmon Studied in the San Francisco Estuary during 1995\nIn April 1995, the Physiological Ecology Investi- gation started a multi-year study of the physiologi- cal development of out migrating juvenile chinook salmon (Oncorhynchus tshawytscha). The goal of this research is to determine the interannual variability of growth, development, and health within the San Francisco estuary and near-coastal system and the influences of biotic and abiotic environmental fac- tors. During April to June 1995, approximately 900 juveniles were collected and analyzed from loca- tions spanning the estuary. Fish were obtained from the head of the estuary at the Sacramento River-San Joaquin River Delta, hatchery plants, San Francisco Bay, and the near-coastal ocean (Gulf of the Farallones).\nResults from fall-run chinook juveniles captured in 1995 included estimates of residence time, growth, and energy status. Based on age estimates from otolith analysis, juveniles spent 28 ± 2 days transiting the estuary. During that span, the fish showed a slight, but significant, gain in length and weight (P=0.01) (Fig. 3). However, those captured in the Gulf of the Farallones shortly after leaving the estuary (mean age = 164 ± 4 days compared to 162 2 days for those caught in the estuary) showed greatly increased size (39% increase in fork length, 312% increase in weight), indicating the beneficial nature of ocean entry. Researchers found no signifi- cant differences in protein concentrations in whole fish sampled among collecting locations, suggest- ing protein was not catabolized for energy. Total lipid concentrations, however, declined signifi- cantly (P<0.05) between juveniles entering the estu- ary and those in San Francisco Bay. Significant declines (P<0.001) in triacylglycerols (the primary form of lipid storage) further establish the impor- tance of lipids to energy metabolism during outmi- gration. When triacylglycerols (TAG) were presented as ratios to cholesterol (CHOL) in salmon (a technique that expresses the amount of TAG relative to the amount of tissue present), a progres- sive decline of stored energy was evident as the juveniles transit the estuary and initiate the ocean phase of life (Fig. 4).\nContaminant analyses revealed that livers from juvenile salmon collected in San Francisco Bay con-\n11\n140\n120\nT\nFORK LENGTH (mm)\nFORK LENGTH\n100\n80\n60\n40\n20\n0\nDELTA\nBAY\nGULF HATCH/REL\n35\n30\nWEIGHT\n25\nWEIGHT (g)\n20\n15\n10\n5\n0\nDELTA\nBAY\nGULF HATCH/REL\nLOCATION\nFigure 3. Fork length (mm) and wet weight (g) of juvenile fall-run chinook salmon collected at loca- tions in the San Francisco Estuary and the Gulf of the Farallones during April-June 1995. Salmon were obtained from the Sacramento-San Joaquin Delta (Delta), San Francisco Bay (Bay), Gulf of the Farallones (Gulf) and hatchery releases (Hatch/Rel). Values are means; error bars denote standard error.\ntained significantly greater concentrations of _ chlordanes, E DDTs, and E PCBs than fish from the delta or hatcheries (P<0.05). This suggests signifi- cant sources of organic contaminants originate within the estuary. Polycyclic aromatic hydrocar- bon concentrations in livers did not vary among locations. Organic contaminants in stomach con- tents were not significantly different among loca- tions, except for _ DDT which was elevated in fish caught in the delta. Unmetabolized DDT was found in 80% of field samples. In general, levels of organic contaminants were three- to ten-fold lower in fish collected in 1995 compared to those assessed in 1992 by researchers from the NMFS Northwest Fisheries Science Center (unpublished report by Usha\n12\nTAG/CHOL\n10\n8\nTAG/CHOL\n6\n4\n2\n0\nDELTA\nBAY\nGULF\nHATCH/REL\nLOCATION\nFigure 4. Ratio of triacylglycerols (TAG) to choles- terol (CHOL) in juvenile fall-run chinook salmon collected at locations in the San Francisco Estuary and Gulf of the Farallones.\nVaranasi submitted to the NMFS Southwest Re- gion). Of 11 metals assessed in composited whole fish samples, only copper and zinc concentrations were significantly elevated in fish obtained in San Francisco Bay compared to those entering the estu- ary at the delta (P<0.0001). Since 1995 was a very wet year with high freshwater outflow and 1992 was a drought year with low outflow, the difference in contaminant concentrations may be a function of freshwater flow. Contaminant analyses in more years of varying water flows may confirm this con- tention.\nThe profile of the physiological development of juvenile fall-run chinook salmon during the outmi- gration in 1995 provides a basis for comparison to subsequent outmigrations. Should environmental conditions vary during the remaining study period of 1997 to 1999, such as a return to drought condi- tions typical of the late 1980s and early 1990s, physi- ological and ecological differences in juvenile outmigrants among both wet and dry years may reveal physiological differences influenced by envi- ronmental factors. (R. B. MacFarlane, 415-435-3149, ext.244)\n12\nINFORMATION TECHNOLOGY SERVICES\nUNIX Computer Specialist Vacancy Filled; Computer Upgrades Completed\nRichard Cosgrove was selected for a UNIX com- puter specialist vacancy and started working for Information Technology Services in September. His duties are primarily UNIX system administra- tion and scientific application programming sup- port. Cosgrove previously worked under contact for the Coastal Fisheries Resources Division's Coastwatch Program. His experience with UNIX systems and Coastwatch satellite data and his edu- cational background in geographic information sys- tems (GIS) will be useful in developing in-house GIS applications.\nInformation Technology Services staff com- pleted major hardware and software upgrades on the La Jolla Laboratory's SGI Challenge L computer. The hardware upgrades consisted of 72GB of disk, 128MB of RAM, a high-capacity digital linear tape stacker backup device (280GB total capacity), and a Lexmark color jet printer capable of printing tabloid size (11 by 17 in) paper. Several new software pack- ages were installed, including True Basic, ImageAl- chemy (graphics conversion software), Vista Extend, Arc/Info GIS, Arc/View GIS, and S-PLUS. (R. Bistodeau, 619-546-7055)\nPUBLICATIONS\nPublished\nAguirre, A. A., T. Graczyk, and G. H. Balazs. 1996. ELISA test for the detection of anti-blood fluke immuno- globulins in Hawaiian green turtles. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Symposium on Sea Turtle Biology and Conservation, February 22-25, 1995, Hilton Head, South Carolina, p. 5. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS- SEFSC-387.\nBalazs, G. B. 1996. He La Honu -- Turtle Day 1995: In celebration of Hawaiian sea turtles. Mar. Turt. Newsl. 74:15-16.\nBalazs, G. B., R. K. Miya, and S. C. Beaver. 1996. Proce- dures to attach a satellite transmitter to the carapace of an adult green turtle, Chelonia mydas. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.),\nProceedings of the Fifteenth Annual Symposium on Sea Turtle Biology and Conservation, February 22-25, 1995, Hilton Head, South Carolina, p. 16-20. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS- SEFSC-387.\nBarlow, J. and T. Gerrodette. 1996. Abundance of cetace- ans in California waters based on 1991 and 1993 ship surveys. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SWFSC-233, 15 p.\nBence, J. R., A. Stewart-Oaten, and S. C. Schroeter. 1996. Estimating the size of an effect from a Before-After- Control-Impact-Pairs design: The predictive ap- proach applied to a power plant study. In R. J. Schmitt and C. W. Osenberg (eds.), Detecting ecological im- pacts: Concepts and applications in coastal habitats, p. 133-149. Academic Press, San Diego\nBoehlert, G. W. 1996. Larval dispersal and survival in tropical reef fishes. In N. V. C. Polunin and C. M. Roberts (eds.), Tropical Reef Fisheries, p. 61-84. Chap- man Hall Publishers, London.\nBolten, A. B., K. A. Bjorndal, H. R. Martins, and G. H. Balazs. 1996. Satellite telemetry of pelagic-stage juve- nile loggerheads in the eastern Atlantic. In J. A. Kei- nath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Sympo- sium on Sea Turtle Biology and Conservation, Febru- ary 22-25, 1995, Hilton Head, South Carolina, p. 39-41. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM- NMFS-SEFSC-387.\nBolten, A. B., J. A. Wetherall, G. H. Balazs, and S. G. Pooley. 1996. Status of marine turtles in the Pacific Ocean relevant to incidental take in the Hawaii-based pelagic longline fishery. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SWFSC-230, 167 p.\nCastleberry, D. T., J. J. Cech, Jr., D. C. Erman, D. Hankin, M. Healey, G. M. Kondolf, M. Mangel, M. Mohr, P. B. Moyle, J. Nielsen, T. P. Speed, and J. G. Williams. 1996. Uncertainty and instream flow standards. Fisheries 21:8-21.\nDutton, Peter H., and G. H. Balazs. 1996. Simple biopsy technique for sampling skin for DNA analysis of sea turtles. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Symposium on Sea Turtle Biology and Con- servation, February 22-25, 1995, Hilton Head, South Carolina, p. 78-79. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SEFSC-387.\nEldridge, M. B., and B. M. Jarvis. 1996. Development and energy utilization in early life stages of viviparous yellowtail rockfish. In D. MacKinlay and M. Eldridge (eds.), The fish egg: Its biology and culture, p. 131-140. International Congress on the Biology of Fishes, American Fisheries Society, Physiology Section, July 14-18, 1996, San Francisco State University.\nLaboratory experiments were conducted with gestat- ing adult yellowtail rockfish and field surveys were\n13\ncompleted of females in late vitellogenesis and gesta- tion to determine the rate of embryonic and larval development, to examine the different measures of egg quality, and to determine the rate of endogenous energy utilization and tissue assimilation. Embryo- genesis and larval development followed a predictable sequence and showed rapid development with hatch- ing occurring in 23 days and parturition in 29 days. Eggs varied in dry weight and energy content with lipid concentrations most directly contributing to the amount of energy per egg. The endogenous energy of yolk and oil globule declined rapidly throughout gestation resulting in limited yolk and oil reserves at parturition. Findings of this research will allow esti- mation of stock biomass and will further under- standing of the underlying factors that contribute to recruitment variation.\nGerrodette, T. 1996. Estimation of allowable loggerhead and leatherback turtle mortality in the North Pacific Ocean by Potential Biological Removal (PBR) calcula- tion. In A. B. Bolten, J. A. Wetherall, G. H. Balazs, and S. G. Pooley (eds.), Status of marine turtles in the Pacific Ocean relevant to incidental take in the Hawaii- based pelagic longline fishery, p. 99-104. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS- SWFSC-230.\nKoga, S. K., and G. H. Balazs. 1996. Sex ratios of green turtles stranded in the Hawaiian Islands. In J. A. Kei- nath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Sympo- sium on Sea Turtle Biology and Conservation, Febru- ary 22-25, 1995, Hilton Head, South Carolina, p. 78-79. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM- NMFS-SEFSC-387.\nMacFarlane, R. B., and E. C. Norton. 1996. Lipid and protein changes during embryo development in the viviparous genus Sebastes: Application to the assess- ment of reproductive success. In D. MacKinlay and M. Eldridge (eds.), The fish egg: Its biology and culture, p. 95-102. International Congress on the Biology of Fishes, American Fisheries Society, Physiology Sec- tion, July 14-18, 1996, San Francisco State University.\nConcentrations of total lipid, protein, and lipid classes were determined in oocytes and embryos from two species of viviparous rockfishes: yellowtail rockfish (Sebastes flavidus) and shortbelly rockfish (Sebastes jor- dani). Total lipid, protein, triacylglycerols, sterol/wax esters, nonesterified fatty acids, cholesterol, and polar lipids declined during embryo development. Regres- sion analysis of changes in lipid and protein variables depending on the stage of embryo maturation found highly significant linear relationships. By solving re- gression equations for the final stage of embryo devel- opment, estimates of the lipid and protein concentrations at birth were obtained. These values provide an estimate of the nutritional and structural biochemical composition of larvae at their earliest life history stage in the environment, and thus, an assess- ment of larval condition and reproductive quality.\nData revealed significant differences in the dynamics of lipid and protein depletion during embryogenesis between the two rockfish species and among three populations of shortbelly rockfish located at Ascen- sion, Pioneer, and Bodega submarine canyons. Esti- mated concentrations of lipids and protein at birth were significantly greater in shortbelly rockfish larvae from Ascension Canyon than in those from Pioneer and Bodega Canyons in 1994, suggesting a greater potential survival during the time period following birth when planktonic food resources are often lim- ited. The technique presented here to assess reproduc- tive quality or the condition of progeny can be applied in field studies of viviparous teleosts and does not require detailed laboratory investigations of embryo development.\nMacKinlay, D., and M. Eldridge (eds.). 1996. The fish egg: Its biology and culture. International Congress on the Biology of Fishes, American Fisheries Society, Physiology Section, July 14-18, 1996, San Francisco State University, 192 p.\nMoser, H. G., and B. C. Mundy. 1996. Bramidae: Pom- frets. In H. G. Moser (ed.), The early stages of fishes in the California Current region, p. 964-971. California Cooperative Oceanic Fisheries Investigations Atlas No. 33.\nOkechi, J. K., and J. J. Polovina. 1995. An evaluation of artificial shelters in the artisanal spiny lobster fishery in Gazi Bay, Kenya. S. Afr. J. Mar. Sci. 16:373-376.\nTwo designs of artificial shelters were evaluated for use in the artisanal spiny lobster fishery in Gazi Bay, Kenya. Both types of shelter were effective in aggre- gating the spiny lobster Panulirus ornatus in nearshore seagrass beds. Lobsters aggregatedat the shelters were caught by free-diving fishermen, using spear- guns and hand nets. Mean lobster catches taken from the shelters ranged from 0.38 to 0.83 kg trip\"1, around 50% of those taken farther offshore in natural reefs. No significant difference was found in the size or sex composition between shelter and reef-caught lobsters.\nParker, H. 1996. Interannual variability in the PFEG coastal upwelling indices. In C. M. Isaacs and V. L. Tharp (eds.), Proceedings of the Twelfth Annual Pa- cific Climate (PACLIM) Workshop. Interagency Eco- logical Studies Program for the Sacramento-San Joaquin Estuary, p.63-99. Tech. Rep. 46.\nPolovina, J. J. 1996. Decadal variation in the trans-Pacific migration of northern bluefin tuna (Thunnus thynnus) coherent with climate-induced change in prey abun- dance. Fish. Oceanogr. 5:114-119.\nNorthern bluefin tuna (Thunnus thynnus) apparently spawn only in the western Pacific, and a portion of the juveniles migrate to the eastern Pacific. During the past decade, catches of northern bluefin in the eastern Pacific have declined. One possible cause for this decline, proposed by bluefin stock assessment studies, is a decline in the proportion of bluefin migrating out\n14\nof the western Pacific. This hypothesis is examined with several indices of the relative abundance of blue- fin tuna in the western and eastern Pacific. These indices suggest a decline in the proportion of bluefin migrating to the eastern Pacific since 1977. This period of reduced bluefin migration coincides with a period when a prey of bluefin, Japanese sardine (Sardinops melanosticta), were abundant off Japan. It is hypothe- sized that in years when sardines are abundant off Japan, a higher proportion of bluefin stay in the west- ern Pacific compared with years when sardines are scarce. Currently, the abundance of sardines off Japan is declining. If this decline continues, this hypothesis predicts an increase in bluefin migrating north of Ha- waii and into the eastern Pacific.\nRosenfeld, L., M. Noble, C. Pilskain, and F. Schwing. 1996. Circulation within Monterey Submarine Canyon. In Office of Naval Research Annual Program Report ONR 32196-14, p. 189-200.\nVan Geen, A., and D. M. Husby. 1996. Cadmium in the California Current system: Tracer of past and present upwelling. J. of Geophys. Res. 101:3489-3507.\nWyneken, J., and G. H. Balazs. 1996. Morphological dif- ferences in hind flippers of hatchling green turtles from the Hawaiian Islands and Florida, USA. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Sympo- sium on Sea Turtle Biology and Conservation, Febru- ary 22-25, 1995, Hilton Head, South Carolina, p. 348-349. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SEFSC-387.\nYoklavich, M., V. Loeb, M. Nishimoto, and B. Daly. 1996. Nearshore assemblages of larval rockfishes and their physical environment off central California during an extended El Niño event, 1991-1993. Fish. Bull., U.S. 94:766-782.\nApproved by Science Director, SWR\nAguirre, A. A., G. H. Balazs, and T. R. Spraker. Oro- pharyngeal fibropapillomas of green turtles (Chelonia mydas) in the Hawaiian Islands. For consideration for publication in Veterinary Research.\nAguirre, A. A., T. R. Spraker, and G. H. Balazs. Spiror- chidiasis in green turtles (Chelonia mydas) with fi- bropapillomatosis in the Hawaiian Islands. For consideration for publication in Journal of Wildlife Diseases.\nBalazs, G. H., A. A. Aguirre, and S. K. K. Murakawa. Occurrence of oral fibropapillomas in the Hawaiian green turtle: Differential disease expression. For con- sideration for publication in Marine Turtle News- letter.\nHe, X., and C. H. Boggs. Estimating fisheries impacts using commercial fisheries data: Simulation models and time series analysis of Hawaii's yellowfin tuna\nfisheries. For consideration for publication in Pro- ceedings of the 2nd World Fishery Congress.\nSakuma, K. M., F. B. Schwing, K. Baltz, D. Roberts, H. A. Parker, and S. Ralston. The physical oceanography off the central California coast during May-June, 1995: a summary of CTD data from pelagic juvenile rockfish surveys. For consideration for publication in NOAA Technical Memorandum NMFS.\nAdministrative Reports\nAdministrative Reports are strictly for internal use only and are not to be cited or treated as publications.\nHonolulu\nHamm, D. C., N. T. S. Chan, and M. M. C. Quach. 1996. Fishery statistics of the western Pacific, Volume XI. SWFSC Admin. Rep., Honolulu, H-96-08, var. p.\nPooley, Samuel G. 1996. Economic determination of the optimal number of Northwestern Hawaiian Islands bottomfish vessels. SWFSC Admin. Rep., Honolulu, H-96-07, 21 p.\nLa Jolla\nBarlow, J. and S. Sexton. 1996. The effect of diving and searching behavior on the probability of detecting track-line groups, go, of long-diving whales during line-transect surveys. SWFSC Admin. Rep., La Jolla, LJ-96-14, 21 p.\nEdwards, E.F. 1996. International Dolphin Conservation Act Annual Report to Congress - 1995. SWFSC Admin. Rep., La Jolla, LJ-96-08, 16 p.\nGerrodette, T. and D. M. Palacios. 1996. Estimates of cetacean abundance in EEZ waters of the eastern tropi- cal Pacific. (In English and Spanish). SWFSC Admin. Rep., La Jolla, LJ-96-10, 28 p.\nLeBoeuf, B. J. 1996. Northern elephant seals at Año Nuevo during the breeding seasons of 1992-1996 (contract report). SWFSC Admin. Rep., La Jolla, LJ-96-12C, 8 p.\nPalacios, D.M. and T. Gerrodette. 1996. Potential impact of artisanal gillnet fisheries on small cetacean popula- tions in the eastern tropical Pacific. (In English and Spanish). SWFSC Admin. Rep., La Jolla, LJ-96-11, 16 p.\nTiburon\nAdams, P. B., T. E. Laidig, K. R. Silberberg, M. J. Bowers, B. M. Jarvis, K. M. Sakuma, K. Baltz, and D. P. Wood- bury. 1996. Historical and current presence-absence data of coho salmon (Oncorhynchus kisutch) in the Cen- tral California Evolutionary Significant Unit. SWFSC Admin. Rep., Tiburon, T-96-01, 24 p.\n15\nUNITED STATES DEPARTMENT OF COMMERCE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NATIONAL MARINE FISHERIES SERVICE SOUTHWEST FISHERIES SCIENCE CENTER 8604 LA JOLLA SHORES DRIVE P.O. BOX 271 LA JOLLA, CALIFORNIA 92038-0271 OFFICIAL BUSINESS PENALITY FOR PRIVATE USE, $300\nTHIRD CLASS",
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                {
                    "content": "..........",
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                    "content": "Alec MacCall",
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                    "content": "This report does not constitute a publication and is for information only.",
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                    "content": "Reference to trade names does not imply endorsement by the National Marine Fisheries Service, NOAA.",
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                    "content": "Editor: Maryann A. Rodriguez",
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                    "content": "Layout: Roy S. Allen",
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                    "content": "The Report of Activities of the Southwest Fisheries Science Center is compiled at La Jolla from",
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                {
                    "content": "material submitted by the Center's staff. To change the delivery address of the Report of Activities,",
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                    "content": "or to cancel your subscription, please notify Maryann Rodriguez at P.O. Box 271, La Jolla, CA",
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                    "content": "92038-0271. Telephone: (619) 546-7063.",
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                    "content": "ANTARCTIC ECOSYSTEM",
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                    "content": "RESEARCH GROUP",
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                    "content": "La Jolla, California",
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                },
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                    "content": "SWFSC to Host CCAMLR Meetings in 1997",
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                    "content": "Division Chief Rennie Holt and Fishery Biolo-",
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                    "content": "gist George Watters were members of the U.S.",
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                    "content": "delegation to the fifteenth meeting of the Com-",
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                    "content": "mission for the Conservation of Antarctic Marine",
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                    "content": "Living Resources (CCAMLR) held in Hobart, Tas-",
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                    "content": "mania, October 21 to November 1, 1996. This",
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                    "content": "report provides a summary of the results of the",
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                    "content": "meeting.",
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                    "content": "During the last fishing season, 8,826 tons of",
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                },
                {
                    "content": "finfish, 118,714 tons of krill, 497 tons of crab, and",
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                    "content": "52 tons of squid were taken by commercial fisher-",
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                    "content": "ies in CCAMLR waters. Almost all of the finfish",
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                    "content": "noides) harvested by Chile and France in waters",
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                    "content": "around South Georgia and Kerguelen Islands.",
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                    "content": "The major harvesting issue faced by the com-",
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                    "content": "mission was notification by six countries of their",
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                    "content": "intent to initiate new fisheries in 1996/97: a squid",
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                    "content": "fishery by the United Kingdom and Korea and",
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                    "content": "longline fisheries for D. eleginoides by South Af-",
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                    "content": "rica, Australia, New Zealand, and Norway. The",
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                    "content": "longline fisheries will occur in several statistical",
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                    "content": "subareas and divisions (management areas for",
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                    "content": "CCAMLR). To regulate these new fisheries,",
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                    "content": "CCAMLR developed an integrated approach",
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                    "content": "which set regulations by area instead of for each",
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                    "content": "country. Regulations included total allowable",
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                    "content": "catch limits (1,980 tons in most areas), provisions",
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                    "content": "to distribute fishing effort over a wide geographic",
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                    "content": "area by permitting a nominal level of exploitation",
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                    "content": "in several fine-scale areas (0.5 degree latitude by",
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                    "content": "1.0 degree longitude), requirements for vessel ob-",
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                    "content": "servers and monitoring, and use of fishery prac-",
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                    "content": "tices to reduce bird mortality.",
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                    "content": "Twenty-one new or amended conservation",
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                    "content": "measures (regulation measures) were adopted,",
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                    "content": "including measures regarding D. eleginoides and",
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                    "content": "mackerel icefish (Champsocephalus gunnari). The",
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                    "content": "latter measure sets a catch limit of 1,300 tons and",
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                    "content": "a by-catch limit for other species, prohibits use of",
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                    "content": "bottom trawls, and prescribes a limited season",
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                    "content": "from May to November 1997.",
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                    "content": "The commission noted that the U.S. vessel fish-",
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                    "content": "ing for crab during the 1995/96 season ceased",
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                    "content": "because the fishing company did not consider the",
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                    "content": "fishery to be economically viable. Because sev-",
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                    "content": "eral companies from the United States and other",
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                    "content": "countries have expressed considerable interest in",
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                    "content": "participating in the fishery, the commission con-",
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                    "content": "of a U.S .- sponsored measure governing the re-",
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                    "content": "sumption of fisheries that have been closed or",
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                    "content": "lapsed. Commission members and the Scientific",
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                    "content": "to this topic at the next meeting.",
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                    "content": "The United States agreed to host several meet-",
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                    "content": "ings at the Southwest Fisheries Science Center",
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                    "content": "(SWFSC) in La Jolla, California, during the inter-",
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                    "content": "cessional period. The meetings will include a",
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                    "content": "group of scientists conducting research in",
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                {
                    "content": "CCAMLR statistical area 48 (the Peninsula,",
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                    "content": "South Orkney Island, and South Georgia Is-",
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                    "content": "land) and joint research in the Elephant Island",
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                },
                {
                    "content": "area, a subgroup on statistical matters, and a",
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                    "content": "working group on monitoring and management.",
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                {
                    "content": "(R. Holt, 619-546-5601)",
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                    "content": "COASTAL FISHERIES",
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                    "content": "RESOURCES DIVISION",
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                    "content": "La Jolla, California",
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                    "content": "Mitochondrial DNA Techniques Used to",
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                    "content": "Identify Larval Rockfishes",
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                    "content": "netic methods to individually identify seven spe-",
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                    "content": "fishes.",
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                    "content": "ments were then amplified and visualized using",
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                    "content": "ethidium bromide under ultraviolet light (Fig. 1).",
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                    "content": "As seen in the Figure 1, species-specific recog-",
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                    "content": "nition sites for three enzymes provided unique",
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                    "content": "The protocol is now being tested on multiple in-",
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                    "content": "dividuals to determine intraspecific polymor-",
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                    "content": "phism prior to using the technique to verify",
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                    "content": "identifications of juveniles collected during rock-",
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                    "content": "fish cruises conducted in May-June 1996. This",
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                    "content": "promising and economical method of species",
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                    "content": "identification using molecular techniques will al-",
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                    "content": "low Tiburon Laboratory scientists to incorporate",
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                    "content": "these additional rockfish species into a modified",
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                    "content": "egg-production model for estimating biomass.",
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                {
                    "content": "(R. Vetter, 619-546-7125)",
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                {
                    "content": "MARINE MAMMAL",
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                    "content": "DIVISION",
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                    "content": "La Jolla, California",
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                {
                    "content": "Whale Habitat and Prey Study Completed",
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                    "content": "Blue whales are common visitors to the western",
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                    "content": "Channel Islands off California from June through",
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                    "content": "September, where they come to feed on dense",
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                    "content": "swarms of krill. To learn more about how blue",
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                    "content": "whales use these summer feeding grounds and",
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                    "content": "what this activity might mean for the global recov-",
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                    "content": "ery of blue whale stocks, the Marine Mammal Divi-",
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                    "content": "sion conducted a Whale Habitat and Prey Study",
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                    "content": "aboard the NOAA research vessel David Starr Jordan",
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                    "content": "from July 10 through August 4, 1996. This study,",
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                    "content": "like one in August of last year, was designed to",
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                    "content": "study the distribution and activities of blue whales",
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                    "content": "and other large whales, to survey the distribution of",
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                    "content": "prey organisms (krill), and to measure physical and",
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                    "content": "biological habitat variables that influence the distri-",
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                    "content": "bution of whales and prey. The cruise was divided",
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                    "content": "into a large-scale survey (10 days) between stations",
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                    "content": "separated by 23 miles and a small-scale survey",
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                    "spans": [
                        {
                            "offset": 8256,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "around the Channel Islands where blue whales feed",
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                    ]
                },
                {
                    "content": "(13 days).",
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                    "content": "Researchers made 314 blue whale sightings, al-",
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                    "content": "most all on the north side of San Miguel and Santa",
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                },
                {
                    "content": "Rosa Islands (Fig. 1). Other whale sightings in-",
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                    ]
                },
                {
                    "content": "cluded 20 humpback whales, 16 fin whales, 11",
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                    ]
                },
                {
                    "content": "minke whales, and 91 unidentified balaenopterids",
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                },
                {
                    "content": "(probably blue whales, but may have been fin",
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                    ]
                },
                {
                    "content": "whales). Thirty-two blue whales were photo-",
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                    ]
                },
                {
                    "content": "graphed for identification with individuals in a",
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                    ]
                },
                {
                    "content": "catalog maintained by Cascadia Research. Biopsy",
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                    ]
                },
                {
                    "content": "samples for genetic analysis of stock affinity were",
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                    ]
                },
                {
                    "content": "collected from 19 blue whales, eight fin whales, six",
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                    ]
                },
                {
                    "content": "bottlenose dolphins, and one Pacific white-sided",
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                    ]
                },
                {
                    "content": "dolphin. Dolphin sightings included 99 common",
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                    ]
                },
                {
                    "content": "dolphin, 61 Risso's dolphin, and 40 Pacific white-",
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                    ]
                },
                {
                    "content": "sided dolphin.",
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                    ]
                },
                {
                    "content": "Krill were sampled with a three-frequency Sim-",
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                    ]
                },
                {
                    "content": "rad EK-500 echo sounder by scientists from the",
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                    ]
                },
                {
                    "content": "Antarctic Ecosystem Research Group. An Isaacs-",
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                    ]
                },
                {
                    "content": "Kidd midwater trawl was used to make oblique",
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                    ]
                },
                {
                    "content": "tows at the large-scale grid stations. A 1-meter mul-",
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                    ]
                },
                {
                    "content": "tiple opening-closing net environmental sampling",
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                    ]
                },
                {
                    "content": "system was used to sample observed acoustic tar-",
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                },
                {
                    "content": "gets during the small-scale survey. Dense layers of",
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                    ]
                },
                {
                    "content": "the euphausiid Euphausia pacifica were found ex-",
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                    "content": "2",
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            "height": 11.0278,
            "unit": "inch",
            "words": [
                {
                    "content": "34.5°N",
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                    "content": "July",
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                    "content": "-",
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                    "content": "August",
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                    "content": "8",
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                    "content": "Whale",
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                    "content": "33.5°N",
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                    "content": "Blue",
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                    "content": "Fin",
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                    "content": "Fin",
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                    "content": "121°W",
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                    }
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                    "content": "120°W",
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                    }
                },
                {
                    "content": "119°W",
                    "polygon": [
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                },
                {
                    "content": "Figure",
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                {
                    "content": "Humpback",
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                {
                    "content": "Minke",
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                {
                    "content": "121°W",
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                    "content": "120°W",
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                    "content": "119°W",
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                {
                    "content": "Figure 1. WHAPS96 on-effort tracklines and whale",
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                {
                    "content": "sightings.",
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                    "content": "tending off the shelf edge on the north side of",
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                {
                    "content": "the islands. On the broad shelf off the northwest",
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                {
                    "content": "side of San Miguel Island, where blue whales",
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                {
                    "content": "were most abundant, dense patches of the larger",
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                {
                    "content": "euphausiid Thysanoessa spinifera were found.",
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                {
                    "content": "The Channel Islands National Marine Sanctu-",
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                },
                {
                    "content": "ary's research vessel Ballena was used to explore",
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                {
                    "content": "whale feeding behavior. Scientists from the Uni-",
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                },
                {
                    "content": "versity of California at Santa Cruz spent three",
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                {
                    "content": "weeks tagging blue whales with radio tags that",
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                {
                    "content": "recorded time and depth and allowed tracking",
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                {
                    "content": "of a whale's position when it surfaced. Four",
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                {
                    "content": "whales were tagged and tracked during the",
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                {
                    "content": "study. Operations were hampered on many",
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                {
                    "content": "days by strong northwesterly winds. The Bal-",
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                    "content": "lena was equipped with a two-frequency echo",
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                    "content": "sounder to detect krill in the vicinity of the",
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                {
                    "content": "tagged whales. Recovered tags showed that",
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                    "content": "whales dived into and moved through krill",
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                    "content": "swarms both near the bottom on the shelf and off",
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                    "content": "the shelf edge.",
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                    "content": "Oceanographic sampling consisted of 80 con-",
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                    "content": "ductivity-temperature-depth (CTD) casts for 698",
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                    "content": "chlorophyll samples, 701 nutrient samples, and",
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                    "content": "119 primary productivity samples. These data",
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                    "content": "showed the water over the shelf on the feeding",
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                    "content": "grounds had been upwelled along the coast",
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                    "content": "north of Point Conception, where strong winds",
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                    "content": "blow from the northwest during summer. The",
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                    "content": "upwelled water is cold and well-mixed and",
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                    "content": "therefore is rich in nutrients and supports a high",
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                    "content": "rate of primary productivity by phytoplankton.",
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                {
                    "content": "The oceanographic and bathymetric characteristics",
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                {
                    "content": "of the northwestern Channel Islands result in dense",
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                {
                    "content": "patches of krill which make this a critical habitat for",
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                {
                    "content": "the world's largest stock of blue whales. (P. Fiedler,",
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                {
                    "content": "619-546-7016)",
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                {
                    "content": "HONOLULU LABORATORY",
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                {
                    "content": "Honolulu, Hawaii",
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                },
                {
                    "content": "PROTECTED SPECIES",
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                },
                {
                    "content": "INVESTIGATION",
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                    "content": "Open House Held Aboard",
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                {
                    "content": "Townsend Cromwell",
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                },
                {
                    "content": "An open house, sponsored by the Honolulu",
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                    "content": "Laboratory in celebration of the 125th anniver-",
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                {
                    "content": "sary of the National Marine Fisheries Service",
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                    "content": "(NMFS), was held on Labor Day 1996 aboard the",
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                    "content": "NOAA research vessel Townsend Cromwell.",
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                    "content": "Long-time employees of the Honolulu Labora-",
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                {
                    "content": "tory characterized this celebration, held at Pier 9",
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                {
                    "content": "of the Aloha Tower Marketplace in downtown",
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                    "content": "Honolulu, as one of the laboratory's most suc-",
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                    "content": "cessful open houses.",
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                        {
                            "offset": 13480,
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                        }
                    ]
                },
                {
                    "content": "by altering reproduction, larval distribution and",
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                },
                {
                    "content": "abundance, and prey and predator production.",
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                    "spans": [
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                },
                {
                    "content": "A study to evaluate distribution and abundance",
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                },
                {
                    "content": "of rockfish larvae and associated hydrography on",
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                },
                {
                    "content": "small spatial (<20 km) and temporal (biweekly to",
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                },
                {
                    "content": "monthly) scales was conducted in an upwelling",
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                    "spans": [
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                    ]
                },
                {
                    "content": "center north of Monterey Bay during an extended",
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                },
                {
                    "content": "El Niño event. Secondary objectives were to assess",
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                },
                {
                    "content": "hatch date distributions of early larvae and pelagic",
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                    ]
                },
                {
                    "content": "juveniles (May-July) of common species, potential",
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                },
                {
                    "content": "larval transport mechanisms, and subsequent",
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                },
                {
                    "content": "strength and timing of nearshore juvenile recruit-",
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                    ]
                },
                {
                    "content": "ment. This project was supported by the California",
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                },
                {
                    "content": "Sea Grant Program, with collaboration among re-",
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                    "spans": [
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                },
                {
                    "content": "search biologists from the Pacific Fisheries Environ-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "mental Group (Mary Yoklavich), Moss Landing",
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                },
                {
                    "content": "Marine Laboratories (Valerie Loeb, Mary Nishi-",
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                            "offset": 14312,
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                    ]
                },
                {
                    "content": "moto, Brendan Daly, and Greg Cailliet), and Cali-",
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                },
                {
                    "content": "fornia Department of Fish and Game (David",
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                },
                {
                    "content": "VenTresca).",
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                {
                    "content": "The prolonged El Niño event resulted in anomal-",
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                },
                {
                    "content": "ously warm, low salinity water to depths over 50 m",
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                },
                {
                    "content": "in nearshore areas, suggesting onshore displace-",
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                {
                    "content": "ment of the California Current. Upwelling was re-",
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                {
                    "content": "duced and delayed, without the usual persistent",
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                },
                {
                    "content": "upwelling plumes in the survey area. Larval rock-",
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                },
                {
                    "content": "fish abundance was similar in both years (winter-",
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                },
                {
                    "content": "spring of 1991-92 and 1992-93), peaking in early",
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                },
                {
                    "content": "February, and was among the highest observed",
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                },
                {
                    "content": "when compared with California Cooperative Oce-",
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                },
                {
                    "content": "anic Fisheries Investigations (CalCOFI) estimates",
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                },
                {
                    "content": "from central California for 1951-84. Based on larval",
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                },
                {
                    "content": "ages, the dominant species (shortbelly rockfish)",
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                },
                {
                    "content": "hatched from December to April, with median",
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                },
                {
                    "content": "hatch dates in mid-February both years. Growth",
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                },
                {
                    "content": "rates of shortbelly rockfish larvae did not differ",
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                },
                {
                    "content": "among months or between years. Relative to 1993,",
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                },
                {
                    "content": "however, rockfish larvae were more abundant and",
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                },
                {
                    "content": "larval shortbelly rockfish were significantly larger",
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                },
                {
                    "content": "at onshore stations in 1992. This coincided with",
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                },
                {
                    "content": "onshore advection of water (namely, reversals in",
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                },
                {
                    "content": "wind direction, warmer and less saline water) dur-",
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                    "spans": [
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                            "offset": 15492,
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                },
                {
                    "content": "ing the onset of the El Niño event, suggesting near-",
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                },
                {
                    "content": "shore retention of larvae. Initiation of upwelling in",
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                {
                    "content": "March and April 1993 and fewer larvae at onshore",
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                },
                {
                    "content": "stations suggest greater offshore transport during",
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                },
                {
                    "content": "the second year.",
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                },
                {
                    "content": "Extremely low numbers of pelagic juvenile rock-",
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                },
                {
                    "content": "fish were encountered in summer months of 1992",
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                },
                {
                    "content": "(2.3 fish per trawl in 56 midwater trawls). In 1993",
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                },
                {
                    "content": "pelagic juveniles were 20 times more abundant (75.1",
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                },
                {
                    "content": "fish per trawl in 64 midwater trawls), comprised",
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                },
                {
                    "content": "twice as many taxa, and were substantially larger",
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                },
                {
                    "content": "than in 1992. Juvenile shortbelly rockfish collected",
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                },
                {
                    "content": "were born late in the season during both years (me-",
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                },
                {
                    "content": "dian hatch dates of April 21, 1992 and March 31,",
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                },
                {
                    "content": "1993); upwelling occurred coincidentally during",
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                },
                {
                    "content": "this period in 1993 but not in 1992. Limited infor-",
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                },
                {
                    "content": "mation on abundance of chaetognaths, a potential",
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                    ]
                },
                {
                    "content": "predator, indicated high numbers nearshore in Feb-",
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                {
                    "content": "ruary 1992. Much higher survival and recruitment",
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                    "content": "of juveniles in 1993 were likely due to increased",
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                    "content": "offshore transport and perhaps lower predation",
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                    "content": "during the larval stages. The results of this study",
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                {
                    "content": "have been published in Fishery Bulletin, U.S. (M.",
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                {
                    "content": "Yoklavich, 408-648-9036)",
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                {
                    "content": "Synopsis of 50 Years of Coastal Upwelling",
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                    "content": "Indices Completed",
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                    "content": "The frictional stress of equatorward wind on the",
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                    "content": "ocean's surface, in concert with the earth's rotation,",
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                    "content": "causes water in the surface layer to move away from",
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                    "content": "the west coast of continents. This water is replaced",
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                    "content": "by water which upwells near the coast from depths",
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                    "content": "of 50-100 m and more. Upwelled water is cooler and",
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                    "content": "more saline than the original surface water and",
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                    "content": "typically has much higher levels of nutrients that are",
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                    "content": "key to sustaining the high biological productiv-",
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                    "content": "ity of eastern boundary current marine ecosystems.",
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                    "content": "Temporal variations in upwelling over seasonal to",
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                    "content": "interannual and longer periods due to large-scale",
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                    "content": "shifts in wind patterns and atmospheric systems are",
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                    "content": "linked to variability in fish populations and other",
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                    "content": "biological components in coastal ocean ecosys-",
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                    "content": "tems.",
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                    "content": "Since the early 1970s, PFEG has generated indices",
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                    "confidence": 0.994,
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                    }
                },
                {
                    "content": "maxima",
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                },
                {
                    "content": "and",
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                    "confidence": 0.995,
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                    }
                },
                {
                    "content": "minima",
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                },
                {
                    "content": "for",
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                },
                {
                    "content": "21-30°N.",
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                },
                {
                    "content": "Units",
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                },
                {
                    "content": "are",
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                    "confidence": 0.995,
                    "span": {
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                    }
                },
                {
                    "content": "m3/s/100m.",
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                },
                {
                    "content": "5",
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                },
                {
                    "content": "AMPLITUDE",
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                    }
                },
                {
                    "content": "B",
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                    "content": "B",
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                    "confidence": 0.995,
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                },
                {
                    "content": "MINIMUM",
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                },
                {
                    "content": "48°N",
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                    "confidence": 0.926,
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                    }
                },
                {
                    "content": "125°W",
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                    "confidence": 0.879,
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                    }
                },
                {
                    "content": "-",
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                    "confidence": 0.963,
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                    }
                },
                {
                    "content": "B",
                    "polygon": [
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                    }
                },
                {
                    "content": "MINIMUM",
                    "polygon": [
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                    }
                },
                {
                    "content": "BI",
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                    "confidence": 0.637,
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                    }
                },
                {
                    "content": "J",
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                    "confidence": 0.989,
                    "span": {
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                    }
                },
                {
                    "content": "2nd",
                    "polygon": [
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                    "confidence": 0.992,
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                },
                {
                    "content": "MINIMUM",
                    "polygon": [
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                    "confidence": 0.992,
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                    }
                }
            ],
            "lines": [
                {
                    "content": "coast of North America. The indices are based on",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "estimates of offshore Ekman transport driven by",
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                    "spans": [
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                    ]
                },
                {
                    "content": "geostrophic wind stress, which are derived from",
                    "polygon": [
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "six-hourly synoptic and monthly mean surface at-",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "mospheric pressure fields. The pressure fields are",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "interpolated from Northern Hemisphere surface",
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                    ]
                },
                {
                    "content": "observations and are provided by the U.S. Navy",
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                    ]
                },
                {
                    "content": "Fleet Numerical Meteorology and Oceanography",
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                    ]
                },
                {
                    "content": "Center, Monterey, California.",
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                    ]
                },
                {
                    "content": "Two sets of upwelling index time series are cal-",
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                },
                {
                    "content": "culated. One set (1967-present) is comprised of",
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                    ]
                },
                {
                    "content": "daily and weekly means of six-hourly upwelling",
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                    ]
                },
                {
                    "content": "indices. Availability of synoptic data prior to 1967",
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                },
                {
                    "content": "is limited. The second set of indices contains",
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                    ]
                },
                {
                    "content": "monthly time series derived from monthly mean",
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                    ]
                },
                {
                    "content": "pressure fields (1946-present). The synoptic fields",
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                    ]
                },
                {
                    "content": "used to construct the monthly mean fields prior to",
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                    ]
                },
                {
                    "content": "July 1962 were acquired from a variety of sources,",
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                    ]
                },
                {
                    "content": "rather than the oceanography center. Four NOAA",
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                    ]
                },
                {
                    "content": "Technical Memoranda describe the methods used",
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                    ]
                },
                {
                    "content": "to calculate the indices and summarize the up-",
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                    ]
                },
                {
                    "content": "welling time series; the latest in this series, which is",
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                    ]
                },
                {
                    "content": "now available, describes the history and derivation",
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                    ]
                },
                {
                    "content": "of the upwelling index and highlights 50 years of the",
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                    ]
                },
                {
                    "content": "series.",
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                    ]
                },
                {
                    "content": "PFEG regularly produces and provides index",
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                    ]
                },
                {
                    "content": "time series to scientists and managers concerned",
                    "polygon": [
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                    ]
                },
                {
                    "content": "with marine ecosystems and biota. The indices are",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "distributed to about 50 regular users each month,",
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                    ]
                },
                {
                    "content": "and each year 40-50 requests are received for up-",
                    "polygon": [
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                        }
                    ]
                },
                {
                    "content": "welling data or information on how they are de-",
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                    ]
                },
                {
                    "content": "rived (Fig. 1). These series have been used in scores",
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                    ]
                },
                {
                    "content": "of studies and scientific publications, including",
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                    ]
                },
                {
                    "content": "studies to describe coastal circulation, El",
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                    ]
                },
                {
                    "content": "Niño/Southern Oscillation, and climate change, as",
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                    ]
                },
                {
                    "content": "well as studies of linkages between environmental",
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                    ]
                },
                {
                    "content": "MONTHLY DISTRIBUTION",
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                    ]
                },
                {
                    "content": "ACADEMIC",
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                    "spans": [
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                },
                {
                    "content": "ACADEMIC",
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                    "content": "FOREIGN",
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                    "content": "FOREIGN",
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                    "content": "PRIVATE",
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                    "content": "PRIVATE",
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                    "content": "STATE",
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                {
                    "content": "GOVERNMENT",
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                    "content": "STATE",
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                {
                    "content": "GOVERNMENT",
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                },
                {
                    "content": "NOAA/NMFSA",
                    "polygon": [
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                    ]
                },
                {
                    "content": "NOAA/NMFS",
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                    "spans": [
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                },
                {
                    "content": "OTHER",
                    "polygon": [
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                    ]
                },
                {
                    "content": "FEDERAL",
                    "polygon": [
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                            "length": 7
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                    ]
                },
                {
                    "content": "GOVERNMENT NOAA",
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                            "length": 15
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                    ]
                },
                {
                    "content": "OTHER",
                    "polygon": [
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                    ]
                },
                {
                    "content": "OTHER",
                    "polygon": [
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                    ]
                },
                {
                    "content": "FEDERAL",
                    "polygon": [
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                    ]
                },
                {
                    "content": "GOVERNMENT",
                    "polygon": [
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                            "length": 10
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                    ]
                },
                {
                    "content": "OTHER",
                    "polygon": [
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                },
                {
                    "content": "NOAA",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Figure 1. Charts showing distribution of users of",
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                    "spans": [
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                    ]
                },
                {
                    "content": "upwelling index data and related information, by",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "their type of affiliation. The left-hand chart shows",
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                    "spans": [
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                            "length": 52
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                    ]
                },
                {
                    "content": "distribution of individuals receiving upwelling",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "products on a monthly basis. The right-hand chart",
                    "polygon": [
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                    ]
                },
                {
                    "content": "shows distribution of special requests for upwelling",
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                        }
                    ]
                },
                {
                    "content": "products or information.",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "and biological variability of zooplankton, crabs,",
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                    "spans": [
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                    ]
                },
                {
                    "content": "groundfish, small pelagics, salmon, and marine",
                    "polygon": [
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                    "spans": [
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                            "offset": 19960,
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                        }
                    ]
                },
                {
                    "content": "birds.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 20007,
                            "length": 6
                        }
                    ]
                },
                {
                    "content": "In the latest report, the shape of the annual cycle",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "is estimated at each of the 15 standard upwelling",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "locations by a least-squares regression of the daily",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "data from 1967-91 to an annual and semiannual",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "harmonic signal. The characteristics of the annual",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "upwelling cycle at each point are summarized in",
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                    "spans": [
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                    ]
                },
                {
                    "content": "Figure 2. The North American west coast appears",
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                    "spans": [
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                    ]
                },
                {
                    "content": "to break down into three distinct upwelling regions:",
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                    "spans": [
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                    ]
                },
                {
                    "content": "Baja California (21-30°N), continental United States",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "(30-48ºN), and British Columbia and Alaska (48-",
                    "polygon": [
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                    ]
                },
                {
                    "content": "60ºN). The annual range off Baja California is rela-",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "tively small, with wintertime values of less than 50",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "m2/s/100m and summer maxima of 75-150",
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                    "spans": [
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                    ]
                },
                {
                    "content": "m3/s/100m. This region is also characterized by",
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                    "spans": [
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                    ]
                },
                {
                    "content": "secondary minima and maxima in August and Oc-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "tober, respectively (more technically a pair of inflec-",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "60°N 149°W",
                    "polygon": [
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                    "spans": [
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                            "offset": 20810,
                            "length": 10
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                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
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                            "offset": 20821,
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                    ]
                },
                {
                    "content": "57ºN 137°W -",
                    "polygon": [
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                    "spans": [
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                            "offset": 20823,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
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                            "offset": 20836,
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                    ]
                },
                {
                    "content": "฿",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 20838,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "54°N 134°W -",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
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                            "offset": 20853,
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                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 20855,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "B MAXIMUM",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "51°N 131°W -",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
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                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
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                            "length": 1
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                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "B",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "45°N 125°W -",
                    "polygon": [
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                {
                    "content": "J",
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                    "content": "B",
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                    "content": "27°N 116°W -",
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                    "content": "B",
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                {
                    "content": "J",
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                    "content": "1",
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                {
                    "content": "LB",
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                {
                    "content": "24°N 113°W- B",
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                    "content": "J",
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                    "content": "J",
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                            "offset": 21306,
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                    ]
                },
                {
                    "content": "IB",
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                    "content": "21°N 107°W-B",
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                    "content": "B",
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                    "content": "J",
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                    "content": "J",
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                },
                {
                    "content": "1 MAY",
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                {
                    "content": "1 JUL",
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                    "content": "1 SEP",
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                    "content": "1 NOV",
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                    "content": "1 JAN",
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                {
                    "content": "Figure 2. Characteristics of annual cycle of daily",
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                {
                    "content": "upwelling, based on biharmonic fits for period 1967-",
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                {
                    "content": "91. The upper panel shows maximum and mini-",
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                    "content": "mum amplitudes of annual cycle at each position.",
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                    "content": "The lower panel shows calendar dates of maxima",
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                {
                    "content": "and minima at all locations, and secondary maxima",
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                {
                    "content": "and minima for 21-30°N. Units are m3/s/100m.",
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                    "content": "5",
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                {
                    "content": "AMPLITUDE",
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                    "content": "B",
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                {
                    "content": "B MINIMUM",
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                    "content": "48°N 125°W -",
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                    "content": "B MINIMUM",
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                    "content": "BI",
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                    "content": "J 2nd MINIMUM",
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                    "content": "The",
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                    "content": "role",
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                    "content": "research,",
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                {
                    "content": "management,",
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                {
                    "content": "and",
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                    "content": "enforcement",
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                {
                    "content": "of",
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                {
                    "content": "regulations",
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                {
                    "content": "for",
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                {
                    "content": "fisheries",
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                {
                    "content": "and",
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                {
                    "content": "pro-",
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                {
                    "content": "6",
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                    "confidence": 0.994,
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            ],
            "lines": [
                {
                    "content": "tion points in the annual curves at 27°N and 30°N).",
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                {
                    "content": "In contrast, annual cycles north of 30°N have a",
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                },
                {
                    "content": "strong sinusoidal (12-month harmonic) signature.",
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                },
                {
                    "content": "The greatest upwelling rates occur at 33ºN, with a",
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                },
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                    "content": "linear decrease in the maximum upwelling indices",
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                },
                {
                    "content": "north to about 54ºN. The greatest annual range",
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                },
                {
                    "content": "occurs at 39ºN. Maximum values north of Wash-",
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                },
                {
                    "content": "ington are about zero, and occur in June-July. Mini-",
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                {
                    "content": "mum indices of about -100 m3/s/100m occur in",
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                },
                {
                    "content": "about January 1.",
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                    "content": "The time of minimum upwelling occurs within",
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                {
                    "content": "about 15 days of January 1 along the entire coast.",
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                },
                {
                    "content": "The time of strongest upwelling increases from late",
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                },
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                    "content": "April off Baja to mid-July off Oregon and Washing-",
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                },
                {
                    "content": "ton, a lag of about 80 days (approximately 30 km per",
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                },
                {
                    "content": "day). The phase of maximum upwelling corre-",
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                },
                {
                    "content": "sponds with certain climatological surface ocean",
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                },
                {
                    "content": "conditions along the coast and oceanographic data",
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                },
                {
                    "content": "which were developed by SWFSC scientist Ron",
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                },
                {
                    "content": "Lynn from CalCOFI sampling data. Maximum sa-",
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                },
                {
                    "content": "linity occurs in May off northern Baja, in June-July",
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                },
                {
                    "content": "off southern California, and in July and August",
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                    ]
                },
                {
                    "content": "along central California. Salinity maxima along",
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                },
                {
                    "content": "southern Baja occur in fall, coinciding with the sec-",
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                },
                {
                    "content": "ondary upwelling maximum. The temperature",
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                },
                {
                    "content": "mimima found by Lynn in upwelling regions, typi-",
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                },
                {
                    "content": "cally in April-May, is impacted substantially by the",
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                },
                {
                    "content": "seasonal surface heat flux and agrees less well with",
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                },
                {
                    "content": "the time of greatest upwelling. The relationship",
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                },
                {
                    "content": "between the annual cycles of upwelling and tem-",
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                },
                {
                    "content": "perature and salinity is also complicated by advec-",
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                {
                    "content": "tion along the coast and is influenced by the surface",
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                },
                {
                    "content": "water masses of the California Current.",
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                },
                {
                    "content": "Annual cycles for the daily and monthly data sets",
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                {
                    "content": "are compared in Figure 3. It appears that upwelling",
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                },
                {
                    "content": "indices derived from monthly pressure fields over-",
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                },
                {
                    "content": "estimate the magnitude of upwelling and down-",
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                },
                {
                    "content": "welling based on monthly averages of the daily",
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                },
                {
                    "content": "values. This discrepancy is most evident during the",
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                {
                    "content": "months of the highest absolute values at each loca-",
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                    "content": "tion (for instance, monthly indices overestimate",
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                {
                    "content": "winter downwelling at the northern points and",
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                        3.9689,
                        7.7917,
                        3.9641,
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                    ],
                    "spans": [
                        {
                            "offset": 23745,
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                        }
                    ]
                },
                {
                    "content": "summer upwelling at the southern points).",
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                    "spans": [
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                    ]
                },
                {
                    "content": "Monthly stress calculations overestimate the daily",
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                    ]
                },
                {
                    "content": "upwelling rates off Alaska by as much as 130%, and",
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                    ]
                },
                {
                    "content": "off southern and Baja California by a factor of two.",
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                },
                {
                    "content": "With 25 years of simultaneous daily and monthly",
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                    "spans": [
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                    ]
                },
                {
                    "content": "data now available, our preliminary interpretation,",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "as reflected in Figure 3, is that the relative discrep-",
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                    ]
                },
                {
                    "content": "ancy between the two data sets varies with season",
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                    ]
                },
                {
                    "content": "as well as latitude. A more complete analysis is",
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                    "spans": [
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                    ]
                },
                {
                    "content": "being developed that will allow the monthly indices",
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                            "offset": 24243,
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                        }
                    ]
                },
                {
                    "content": "to be adjusted temporally and spatially to reflect",
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                    "spans": [
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                            "offset": 24295,
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                    ]
                },
                {
                    "content": "more realistic estimates of coastal upwelling.",
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                    "spans": [
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                            "offset": 24346,
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                    ]
                },
                {
                    "content": "100 -",
                    "polygon": [
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                    "spans": [
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                            "offset": 24393,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "57ºN 137°W",
                    "polygon": [
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                    ]
                },
                {
                    "content": "0",
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                    ],
                    "spans": [
                        {
                            "offset": 24410,
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                        }
                    ]
                },
                {
                    "content": "-100.",
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                            "offset": 24412,
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                        }
                    ]
                },
                {
                    "content": "-200-",
                    "polygon": [
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                    "spans": [
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                            "offset": 24418,
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                        }
                    ]
                },
                {
                    "content": "-300-",
                    "polygon": [
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                    "spans": [
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                            "offset": 24424,
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                    ]
                },
                {
                    "content": "UPWELLING INDICES (m/s/100m 3 coastline)",
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                    ]
                },
                {
                    "content": "100 -",
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                    ]
                },
                {
                    "content": "48°N 125°W",
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                    ]
                },
                {
                    "content": "0",
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                    ]
                },
                {
                    "content": "-100-",
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                        }
                    ]
                },
                {
                    "content": "-200-",
                    "polygon": [
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                    ]
                },
                {
                    "content": "-300-",
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                    ]
                },
                {
                    "content": "300-",
                    "polygon": [
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                    ],
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                    ]
                },
                {
                    "content": "200-",
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                        }
                    ]
                },
                {
                    "content": "36°N 122°W",
                    "polygon": [
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                    ]
                },
                {
                    "content": "100-",
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                    ]
                },
                {
                    "content": "O",
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                        }
                    ]
                },
                {
                    "content": "-100-",
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                    ]
                },
                {
                    "content": "200-",
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                    ]
                },
                {
                    "content": "24°N 113°W",
                    "polygon": [
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                    ]
                },
                {
                    "content": "100-",
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                    ]
                },
                {
                    "content": "0",
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                        }
                    ]
                },
                {
                    "content": "-100",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Figure 3. The annual cycle of upwelling at repre-",
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                    ]
                },
                {
                    "content": "sentative west coast locations. The diamonds de-",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "note the mean of the monthly upwelling indices for",
                    "polygon": [
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                    ]
                },
                {
                    "content": "each calendar month for the period 1967-91. The",
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                    ]
                },
                {
                    "content": "vertical bars denote +/- one standard deviation for",
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                    ],
                    "spans": [
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                    ]
                },
                {
                    "content": "each calendar month. The bold curve is a bihar-",
                    "polygon": [
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                    ]
                },
                {
                    "content": "monic fit to the daily upwelling indices for the",
                    "polygon": [
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                    ]
                },
                {
                    "content": "period 1967-91. The shaded area around the bihar-",
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                    ]
                },
                {
                    "content": "monic curve denotes +/- one standard error, calcu-",
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                        }
                    ]
                },
                {
                    "content": "lated for each Julian Day.",
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                    ]
                },
                {
                    "content": "Rapid advancements in computing and commu-",
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                    ]
                },
                {
                    "content": "nications since the initial development of the up-",
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                    "spans": [
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                    ]
                },
                {
                    "content": "welling index over two decades ago have led to",
                    "polygon": [
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                    ]
                },
                {
                    "content": "more accurate and efficient calculation and distribu-",
                    "polygon": [
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                    ]
                },
                {
                    "content": "tion of the upwelling products. The upwelling in-",
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                    ]
                },
                {
                    "content": "dices and many other PFEG data products are now",
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                            "offset": 25338,
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                        }
                    ]
                },
                {
                    "content": "available on the Internet at http://www.pfeg.noaa.",
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                    ]
                },
                {
                    "content": "gov.",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Although the upwelling indices are by far the",
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                    ]
                },
                {
                    "content": "most popular product PFEG derives from the sur-",
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                },
                {
                    "content": "face pressure fields, they are but one of several",
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                },
                {
                    "content": "atmospheric and oceanic products generated from",
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                    ]
                },
                {
                    "content": "the six-hourly pressures. A future technical memo-",
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                    ]
                },
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                    "content": "specific topics (for example, model data applica-",
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                    "content": "tions, remote sensing, and fisheries), be developed.",
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                    "content": "cluding remotely sensed data, multi-beam sonar",
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                    "content": "technology, and numerical model output, were",
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                    "content": "highly recommended. Parallel efforts among dif-",
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                    "content": "ferent agencies were identified, leading to sugges-",
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                    "content": "tions to promote collaboration and increase the",
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                    "content": "interoperability among existing environmental",
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                {
                    "content": "data access systems. The working group on part-",
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                    "content": "nerships for fisheries oceanography recognized the",
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                    "content": "critical need for cooperation and collaboration to",
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                    "content": "identify and fully utilize all environmental data and",
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                {
                    "content": "to model output that could be beneficial to NOAA's",
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                {
                    "content": "environmental stewardship mission.",
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                {
                    "content": "The workshop proceedings will be published",
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                {
                    "content": "as a NOAA Technical Memorandum. A short",
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                },
                {
                    "content": "workshop report and the full text of recommen-",
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                },
                {
                    "content": "dations are available on the Internet at",
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                    "content": "http://www.pfeg.noaa.gov/workshop.",
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                    "content": "(G. Boehlert, 408-648-8447)",
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                {
                    "content": "PFEG'S Historical Data Archives",
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                    "content": "Transferred from Navy Computers to",
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                {
                    "content": "IT-95 System",
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                    "content": "Beginning with its inception in 1969, PFEG estab-",
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                    "content": "lished, and has maintained, a strong cooperative",
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                {
                    "content": "relationship with the Navy's Fleet Numerical Mete-",
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                    "content": "orology and Oceanography Center. The Navy pe-",
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                    "content": "riodically seeks practical comments on model",
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                    "content": "development results from PFEG research staff, for",
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                    "content": "whom the center has been a consistent source of",
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                    "content": "observational data sets and meteorological and",
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                    "content": "oceanographic model products.",
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                    "content": "Oceanographic and meteorological data are at",
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                    "content": "the heart of PFEG's research. While collecting and",
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                    "content": "processing data for its research efforts, PFEG has",
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                    "content": "made extra efforts to make data available for fisher-",
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                    "content": "ies and other researchers. Researchers chose not to",
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                    "content": "repeatedly access and rely on the formal data re-",
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                    "content": "sources of the center, which include hundreds of",
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                    "content": "products and thousands of observations of little or",
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                },
                {
                    "content": "no interest to PFEG researchers. Instead, PFEG sci-",
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                    "content": "entists extracted subsets of interest from those ar-",
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                    "content": "chives and maintained their own informal archives",
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                {
                    "content": "of data and model products. The data and products",
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                    "content": "were retained and used on center systems in the",
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                    "content": "form as acquired, using applications PFEG devel-",
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                {
                    "content": "oped along with tools developed by the Navy to",
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                    "content": "produce a suite of monthly and special products (for",
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                },
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                    "content": "example, the Bakun Upwelling Index).",
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                    "content": "The center has undergone a transition to modern-",
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                },
                {
                    "content": "ize its computer systems to Cray supercomputers",
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                {
                    "content": "and Sun workstations. In response to those",
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                    "content": "changes, PFEG transferred its historical data ar-",
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                },
                {
                    "content": "chives to the IT-95 server at its Pacific Grove facility",
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                    "content": "and established communication paths to assure",
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                    "content": "consistent and ready access to data and products",
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                    "content": "from the Navy. Successful conversion of monthly",
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                    "content": "and special applications, completion of the PFEG",
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                    "content": "monofilament nylon were made during nighttime",
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                    "content": "hours. Total catch was 205 shortfin mako sharks",
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                    "content": "(Isurus oxyrinchus), 689 blue sharks (Prionace glauca),",
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                    "content": "74 pelagic stingrays (Dasyatis violacea), and one",
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                    "content": "swordfish (Xiphias gladius). One California sea lion",
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                    "content": "(Zalophus californianas) and one common mola (Mola",
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                    "content": "mola) were foul-hooked (snagged) during fishing",
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                    "content": "hooks. Catch rate for shortfin mako sharks aver-",
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                    "content": "8.5 per 100 hooks-in the most productive survey",
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                {
                    "content": "areas.",
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                    "content": "sharks were tagged and released for population and",
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                    "content": "movement studies. Necropsies were conducted on",
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                    "content": "52 blue sharks, 31 shortfin mako sharks, and one",
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                    "content": "swordfish. Heart, liver, gonad, and muscle tissue",
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                    "content": "were collected for a variety of studies including",
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                    "content": "reproductive condition, DNA analysis, heavy metal",
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                {
                    "content": "and DDT concentrations, and biochemical analysis.",
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                    "content": "Stomachs were collected for feeding pattern studies.",
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                    "content": "Fifty-three pelagic stingrays were collected for age-",
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                    "content": "ing and growth studies. Four whole blue sharks",
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                    "content": "were collected for observer shark identification and",
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                    "content": "anatomy training. Physiological studies of swim-",
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                {
                    "content": "ming energetics were conducted on four shortfin",
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                },
                {
                    "content": "mako sharks and six pelagic stingrays in a variable-",
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                {
                    "content": "speed water tunnel aboard the vessel.",
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                },
                {
                    "content": "Mexican scientists from Instituto Nacional de la",
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                {
                    "content": "Pesca, Universidad Autonoma de Baja California",
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                },
                {
                    "content": "Sur, and Centro de Investigacion Cientifica y de",
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                },
                {
                    "content": "Educacion Superior de Ensenada, and U.S. scien-",
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                {
                    "content": "tists and student volunteers from NMFS, California",
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                    "content": "Department of Fish and Game, Scripps Institution",
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                },
                {
                    "content": "of Oceanography, Moss Landing Marine Labora-",
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                },
                {
                    "content": "tory, Monterey Bay Aquarium, and California State",
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                },
                {
                    "content": "University at Los Angeles participated in the cruise.",
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                },
                {
                    "content": "(D. Holts, 619-546-7186)",
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                    ]
                },
                {
                    "content": "Newsletters Now Available on the World",
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                },
                {
                    "content": "Wide Web",
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                    ]
                },
                {
                    "content": "Two popular newsletters produced by the Pe-",
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                    ]
                },
                {
                    "content": "lagic Fisheries Resources Division are now available",
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                },
                {
                    "content": "on the World Wide Web. Each issue of the Tuna",
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                    ]
                },
                {
                    "content": "Newsletter and the Billfish Newsletter is posted to the",
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                    ]
                },
                {
                    "content": "SWFSC's Web site at about the same time that it is",
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                },
                {
                    "content": "mailed to regular subscribers. Back issues are avail-",
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                    ]
                },
                {
                    "content": "able for 1995 and 1996. The electronic versions of",
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                    ]
                },
                {
                    "content": "these newsletters contain all the original text, tables,",
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                },
                {
                    "content": "and figures, and other useful information.",
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                },
                {
                    "content": "The Tuna Newsletter is published quarterly by the",
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                    ]
                },
                {
                    "content": "Southwest Region and SWFSC to inform constitu-",
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                    ]
                },
                {
                    "content": "ents and the general public of the status of U.S. tuna",
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                    ]
                },
                {
                    "content": "fisheries, the canned tuna industry, and research",
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                },
                {
                    "content": "conducted at the SWFSC and associated organiza-",
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                    ]
                },
                {
                    "content": "tions. Each issue also provides a calendar of up-",
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                },
                {
                    "content": "coming meetings and conferences and summarizes",
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                },
                {
                    "content": "tuna news stories from around the world.",
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                {
                    "content": "The Billfish Newsletter is an annual publication",
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                    "content": "stations",
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                    "content": "waters.",
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                    "content": "TIBURON LABORATORY",
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                    "content": "Tiburon, California",
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                {
                    "content": "GROUNDFISH ANALYSIS",
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                {
                    "content": "INVESTIGATION",
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                    "content": "14th Annual Juvenile Rockfish Survey",
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                {
                    "content": "Completed",
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                    "content": "A research cruise aboard the NOAA research",
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                    "content": "vessel David Starr Jordan was conducted by fishery",
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                    "content": "biologists of the Groundfish Analysis Investigation",
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                    "content": "from May 17 to June 20, 1996. The survey (DSJ-",
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                    "content": "9606) was designed to study the distribution and",
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                },
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                    "content": "abundance of pelagic-staged juvenile rockfish (Se-",
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                },
                {
                    "content": "bastes spp.) in an attempt to identify factors contrib-",
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                {
                    "content": "uting to variability in annual spawning success.",
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                    "content": "Juvenile rockfish samples were obtained from",
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                    "content": "midwater trawls conducted at night during three",
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                    "content": "sweeps of an area off the central California coast",
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                    "content": "from Monterey Bay (36ºN) to Point Reyes (38º 10'N)",
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                    "content": "(Fig. 1). A modified Cobb midwater trawl with a",
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                    "content": "26-m headrope and 1-cm liner was towed for 15",
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                    "content": "minutes at depth at five or six stations per night.",
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                    "content": "Ship speed was maintained at 2.7 knots while trawl-",
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                    "content": "ing. Target headrope depths were 7, 30 and 100 m",
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                    "content": "and were recorded during each tow by a time-depth",
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                    "content": "recorder attached to the upper bridle.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36287,
                            "length": 38
                        }
                    ]
                },
                {
                    "content": "+",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36326,
                            "length": 1
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                    ]
                },
                {
                    "content": "38°N",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36328,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "x",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36333,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "+",
                    "polygon": [
                        2.1615,
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                        2.2381,
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                    "spans": [
                        {
                            "offset": 36335,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "+",
                    "polygon": [
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                        7.3851,
                        2.0416,
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                    "spans": [
                        {
                            "offset": 36337,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "+",
                    "polygon": [
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                        2.1615,
                        7.3995,
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                    "spans": [
                        {
                            "offset": 36339,
                            "length": 1
                        }
                    ]
                },
                {
                    "content": "37°N",
                    "polygon": [
                        0.9489,
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                    "spans": [
                        {
                            "offset": 36341,
                            "length": 4
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                    ]
                },
                {
                    "content": "+ CTD Only",
                    "polygon": [
                        1.3707,
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                        2.1231,
                        8.5496,
                        2.1231,
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                        1.3707,
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                    ],
                    "spans": [
                        {
                            "offset": 36346,
                            "length": 10
                        }
                    ]
                },
                {
                    "content": "Midwater Trawl & CTD",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 36357,
                            "length": 20
                        }
                    ]
                },
                {
                    "content": "124°W",
                    "polygon": [
                        1.4569,
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                        1.8356,
                        9.096,
                        1.8404,
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                        1.4569,
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                    ],
                    "spans": [
                        {
                            "offset": 36378,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "123°W",
                    "polygon": [
                        2.4203,
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                        2.8037,
                        9.096,
                        2.8037,
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                    ],
                    "spans": [
                        {
                            "offset": 36384,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "122°W",
                    "polygon": [
                        3.4123,
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                        3.7861,
                        9.0912,
                        3.7861,
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                    ],
                    "spans": [
                        {
                            "offset": 36390,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Figure 1. Map of midwater trawl and CTD stations",
                    "polygon": [
                        1.0783,
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                    "spans": [
                        {
                            "offset": 36396,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "during juvenile rockfish survey DSJ-9606.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36445,
                            "length": 41
                        }
                    ]
                },
                {
                    "content": "One hundred sixteen midwater trawls were com-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36487,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "pleted. Most of the juvenile rockfish sampled were",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36533,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "small (15-25 mm), although the \"blackspot group,\"",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36584,
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                        }
                    ]
                },
                {
                    "content": "which consisted of blue, yellowtail, and black rock-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36634,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "fish, ranged in length from 30-40 mm. For the third",
                    "polygon": [
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                    "spans": [
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                            "offset": 36687,
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                        }
                    ]
                },
                {
                    "content": "straight year, juvenile rockfish catch was low (Table",
                    "polygon": [
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                    "spans": [
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                            "offset": 36739,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "1, see page 10). The total non-shortbelly rockfish",
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                    "spans": [
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                    ]
                },
                {
                    "content": "catch was the lowest since the three-sweep method",
                    "polygon": [
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "was instituted in 1986; the catch of invertebrates and",
                    "polygon": [
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                    "spans": [
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                            "offset": 36894,
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                        }
                    ]
                },
                {
                    "content": "other fish species was also low.",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "Two hundred ninety conductivity-temperature-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 36982,
                            "length": 44
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                    ]
                },
                {
                    "content": "depth (CTD) casts were completed throughout the",
                    "polygon": [
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                    "spans": [
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                            "offset": 37027,
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                    ]
                },
                {
                    "content": "day in the vicinity of the midwater trawl transects",
                    "polygon": [
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                    "spans": [
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                            "offset": 37075,
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                    ]
                },
                {
                    "content": "and at each night trawl station. Temperature and",
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                    "spans": [
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                    ]
                },
                {
                    "content": "salinity data were obtained and chlorophyll and",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "light levels were measured. Water samples were",
                    "polygon": [
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                    ]
                },
                {
                    "content": "taken twice daily for fluorometry and salinity cali-",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "brations. Upwelling was intense during the cruise",
                    "polygon": [
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                    ]
                },
                {
                    "content": "with sea surface temperatures in the 9-10℃ range",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "(Fig. 2). Chlorophyll, light level, and current data",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 37423,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "will be analyzed at a later date.",
                    "polygon": [
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                    ],
                    "spans": [
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                            "offset": 37476,
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                    ]
                },
                {
                    "content": "One of several ancillary projects was to deter-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 37510,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "mine the distribution and abundance and diel mi-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 37558,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "gratory behavior of larval crabs (Cancer spp.) and",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37607,
                            "length": 50
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                    ]
                },
                {
                    "content": "rockfishes relative to the hydrographic features on",
                    "polygon": [
                        4.3229,
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                        4.9074,
                        7.4381,
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                    ],
                    "spans": [
                        {
                            "offset": 37658,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "the shelf between Bodega Head and Point Arena.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 37710,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "Twenty-two Tucker trawls and nine manta tows",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37757,
                            "length": 44
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                    ]
                },
                {
                    "content": "were conducted in the Gulf of the Farallones and",
                    "polygon": [
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                    "spans": [
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                            "offset": 37802,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "10.2",
                    "polygon": [
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                        4.8597,
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                        4.7686,
                        6.3499,
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                    "spans": [
                        {
                            "offset": 37851,
                            "length": 4
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                    ]
                },
                {
                    "content": ":6",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 37856,
                            "length": 2
                        }
                    ]
                },
                {
                    "content": "38°N",
                    "polygon": [
                        4.3229,
                        6.6375,
                        4.3229,
                        6.3499,
                        4.4331,
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                    ],
                    "spans": [
                        {
                            "offset": 37859,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "8'6",
                    "polygon": [
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                        5.3198,
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                    ],
                    "spans": [
                        {
                            "offset": 37864,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "11.4",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 37868,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "12.",
                    "polygon": [
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                        5.9955,
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                        5.8805,
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                    ],
                    "spans": [
                        {
                            "offset": 37873,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "37°N",
                    "polygon": [
                        4.299,
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                        4.2942,
                        7.5672,
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                    ],
                    "spans": [
                        {
                            "offset": 37877,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "DSJ9606",
                    "polygon": [
                        4.8693,
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                        5.454,
                        7.8212,
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                    ],
                    "spans": [
                        {
                            "offset": 37882,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "Sweep 3",
                    "polygon": [
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                        5.4396,
                        7.9841,
                        5.4396,
                        8.1231,
                        4.8789,
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                    ],
                    "spans": [
                        {
                            "offset": 37890,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "Temperature",
                    "polygon": [
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                        5.5738,
                        8.1327,
                        5.5738,
                        8.2956,
                        4.7255,
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                    ],
                    "spans": [
                        {
                            "offset": 37898,
                            "length": 11
                        }
                    ]
                },
                {
                    "content": "(℃) at 2 m",
                    "polygon": [
                        4.8022,
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                        5.5067,
                        8.2956,
                        5.5115,
                        8.4394,
                        4.8022,
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                    ],
                    "spans": [
                        {
                            "offset": 37910,
                            "length": 10
                        }
                    ]
                },
                {
                    "content": "122",
                    "polygon": [
                        6.3933,
                        8.4154,
                        6.4604,
                        8.2956,
                        6.4987,
                        8.3292,
                        6.4317,
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                    ],
                    "spans": [
                        {
                            "offset": 37921,
                            "length": 3
                        }
                    ]
                },
                {
                    "content": "12.2",
                    "polygon": [
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                        8.4346,
                        6.3023,
                        8.4202,
                        6.307,
                        8.4969,
                        6.1681,
                        8.5113
                    ],
                    "spans": [
                        {
                            "offset": 37925,
                            "length": 4
                        }
                    ]
                },
                {
                    "content": "124°W",
                    "polygon": [
                        4.7974,
                        8.7413,
                        5.1904,
                        8.7413,
                        5.1904,
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                        4.7974,
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                    ],
                    "spans": [
                        {
                            "offset": 37930,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "123°W",
                    "polygon": [
                        5.7655,
                        8.7461,
                        6.1489,
                        8.7509,
                        6.1489,
                        8.8659,
                        5.7655,
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                    ],
                    "spans": [
                        {
                            "offset": 37936,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "122°W",
                    "polygon": [
                        6.7575,
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                        7.141,
                        8.7509,
                        7.1362,
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                    ],
                    "spans": [
                        {
                            "offset": 37942,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Figure 2. Contours of sea surface temperature (℃)",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 37948,
                            "length": 49
                        }
                    ]
                },
                {
                    "content": "measured by CTD probe during the third sweep of",
                    "polygon": [
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                    "content": "Totals",
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                    "content": "date and the data will be used to determine the",
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                    "content": "megalopae. (D. Woodbury, 415-435-3149, ext.218)",
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                    "content": "Fishery biologists in the Groundfish Analysis",
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                    "content": "10",
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                            "length": 44
                        }
                    ]
                },
                {
                    "content": "Starr Jordan. Both the disposal site and a control site",
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                    "spans": [
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                    ]
                },
                {
                    "content": "25 nmi south were surveyed. Thirty-seven midwa-",
                    "polygon": [
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                    ]
                },
                {
                    "content": "ter trawls were conducted at night to collect juvenile",
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                    ]
                },
                {
                    "content": "fish and euphausiids. The catch was dominated by",
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                    ]
                },
                {
                    "content": "offshore species, such as squid (non-Loligo sp.),",
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                    ]
                },
                {
                    "content": "myctophids, and sergestids.",
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                    ]
                },
                {
                    "content": "The second survey was conducted September",
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                    ]
                },
                {
                    "content": "17-22, 1996, aboard the Moss Landing Marine Labo-",
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                    ]
                },
                {
                    "content": "ratory's research vessel Point Sur. Net sampling of",
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                    ]
                },
                {
                    "content": "juvenile fish and euphausiids was conducted at the",
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                    ]
                },
                {
                    "content": "disposal site stations and additional stations along",
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                    ]
                },
                {
                    "content": "the perimeter of the disposal site stations. Many",
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                    ]
                },
                {
                    "content": "unidentified juvenile rockfish were collected which",
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                    ]
                },
                {
                    "content": "comprise a \"summer spawning\" group. One excep-",
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                },
                {
                    "content": "tional catch of euphausiids occurred in an area a few",
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                    ]
                },
                {
                    "content": "miles east of the disposal site, where a large concen-",
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                    ]
                },
                {
                    "content": "tration of birds and marine mammals also was ob-",
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                },
                {
                    "content": "served.",
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                    ]
                },
                {
                    "content": "Ornithologists from H. T. Harvey and Associates",
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                    ]
                },
                {
                    "content": "and the Point Reyes Bird Observatory recorded the",
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                    "spans": [
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                    ]
                },
                {
                    "content": "distribution and abundance of sea birds and marine",
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                },
                {
                    "content": "mammals during daytime transects between CTD",
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                    ]
                },
                {
                    "content": "stations. Birds and mammals were sparse where",
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                    ]
                },
                {
                    "content": "depths exceeded 1500 m (including the disposal",
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                },
                {
                    "content": "site), but were abundant along the upper shelf break",
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                },
                {
                    "content": "(to 400 m depth). Especially large concentrations of",
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                },
                {
                    "content": "birds and cetaceans were encountered at the upper",
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                },
                {
                    "content": "end of Pioneer Canyon. About 20 species of birds,",
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                },
                {
                    "content": "three species of pinnipeds, four species of whales,",
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                },
                {
                    "content": "and four species of dolphins were observed, which",
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                },
                {
                    "content": "is not unusual for the early fall in this region.",
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                },
                {
                    "content": "Several physical oceanographic parameters were",
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                    ]
                },
                {
                    "content": "also measured during the cruise, including currents,",
                    "polygon": [
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                    ]
                },
                {
                    "content": "temperature, and salinity. The information col-",
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                    ]
                },
                {
                    "content": "lected will be analyzed to help determine whether",
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                    ]
                },
                {
                    "content": "disposals have affected abundances of important",
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                    ]
                },
                {
                    "content": "small fishes, invertebrates, marine mammals, and",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "sea birds, and if their physiological condition was",
                    "polygon": [
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                    ]
                },
                {
                    "content": "poorer at the disposal site than other areas. (D.",
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                    ]
                },
                {
                    "content": "Woodbury, 415-435-3149, ext.218)",
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                    "spans": [
                        {
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                        }
                    ]
                },
                {
                    "content": "GROUNDFISH PHYSIOLOGICAL",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "ECOLOGY INVESTIGATION",
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                    "spans": [
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                    ]
                },
                {
                    "content": "Physiological Ecology of Juvenile Fall-Run",
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                    ]
                },
                {
                    "content": "Chinook Salmon Studied in the San",
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                    ]
                },
                {
                    "content": "Francisco Estuary during 1995",
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                    ]
                },
                {
                    "content": "In April 1995, the Physiological Ecology Investi-",
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                    ]
                },
                {
                    "content": "gation started a multi-year study of the physiologi-",
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                },
                {
                    "content": "cal development of out migrating juvenile chinook",
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                    ]
                },
                {
                    "content": "salmon (Oncorhynchus tshawytscha). The goal of this",
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                    ]
                },
                {
                    "content": "research is to determine the interannual variability",
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                    ]
                },
                {
                    "content": "of growth, development, and health within the San",
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                        }
                    ]
                },
                {
                    "content": "Francisco estuary and near-coastal system and the",
                    "polygon": [
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                    ]
                },
                {
                    "content": "influences of biotic and abiotic environmental fac-",
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                    ]
                },
                {
                    "content": "tors. During April to June 1995, approximately 900",
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                    ]
                },
                {
                    "content": "juveniles were collected and analyzed from loca-",
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                    ]
                },
                {
                    "content": "tions spanning the estuary. Fish were obtained",
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                    ]
                },
                {
                    "content": "from the head of the estuary at the Sacramento",
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                    ]
                },
                {
                    "content": "River-San Joaquin River Delta, hatchery plants, San",
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                    ]
                },
                {
                    "content": "Francisco Bay, and the near-coastal ocean (Gulf of",
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                {
                    "content": "the Farallones).",
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                    "content": "in 1995 included estimates of residence time,",
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                    "content": "from otolith analysis, juveniles spent 28 ± 2 days",
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                    "content": "weight (P=0.01) (Fig. 3). However, those captured",
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                    "content": "in the Gulf of the Farallones shortly after leaving the",
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                    "content": "estuary (mean age = 164 ± 4 days compared to 162",
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                    "content": "2 days for those caught in the estuary) showed",
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                    "content": "greatly increased size (39% increase in fork length,",
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                    "content": "312% increase in weight), indicating the beneficial",
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                    "content": "nature of ocean entry. Researchers found no signifi-",
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                    "content": "cant differences in protein concentrations in whole",
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                    "content": "fish sampled among collecting locations, suggest-",
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                    "content": "ing protein was not catabolized for energy. Total",
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                    "content": "lipid concentrations, however, declined signifi-",
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                    "content": "cantly (P<0.05) between juveniles entering the estu-",
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                    "content": "ary and those in San Francisco Bay. Significant",
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                    "content": "declines (P<0.001) in triacylglycerols (the primary",
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                    "content": "form of lipid storage) further establish the impor-",
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                    "content": "tance of lipids to energy metabolism during outmi-",
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                    "content": "gration. When triacylglycerols (TAG) were",
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                    "content": "presented as ratios to cholesterol (CHOL) in salmon",
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                    "content": "(a technique that expresses the amount of TAG",
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                    "content": "relative to the amount of tissue present), a progres-",
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                    "content": "factors.",
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                {
                    "content": "(R.",
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                    "content": "B.",
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                {
                    "content": "MacFarlane,",
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                },
                {
                    "content": "415-435-3149,",
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                },
                {
                    "content": "ext.244)",
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                },
                {
                    "content": "12",
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            ],
            "lines": [
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                    "content": "140",
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                },
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                    "content": "120",
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                },
                {
                    "content": "T",
                    "polygon": [
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                    ]
                },
                {
                    "content": "FORK LENGTH (mm)",
                    "polygon": [
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                },
                {
                    "content": "FORK LENGTH",
                    "polygon": [
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                    ]
                },
                {
                    "content": "100",
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                    ]
                },
                {
                    "content": "80",
                    "polygon": [
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                    ]
                },
                {
                    "content": "60",
                    "polygon": [
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                    ]
                },
                {
                    "content": "40",
                    "polygon": [
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                },
                {
                    "content": "20",
                    "polygon": [
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                },
                {
                    "content": "0",
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                    "spans": [
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                    ]
                },
                {
                    "content": "DELTA",
                    "polygon": [
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                },
                {
                    "content": "BAY",
                    "polygon": [
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                },
                {
                    "content": "GULF HATCH/REL",
                    "polygon": [
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                },
                {
                    "content": "35",
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                    ]
                },
                {
                    "content": "30",
                    "polygon": [
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                    ]
                },
                {
                    "content": "WEIGHT",
                    "polygon": [
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                    ]
                },
                {
                    "content": "25",
                    "polygon": [
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                    ]
                },
                {
                    "content": "WEIGHT (g)",
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                    ]
                },
                {
                    "content": "20",
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                    ]
                },
                {
                    "content": "15",
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                    ]
                },
                {
                    "content": "10",
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                    ]
                },
                {
                    "content": "5",
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                    ]
                },
                {
                    "content": "0",
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                    ]
                },
                {
                    "content": "DELTA",
                    "polygon": [
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                    "spans": [
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                    ]
                },
                {
                    "content": "BAY",
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                },
                {
                    "content": "GULF HATCH/REL",
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                },
                {
                    "content": "LOCATION",
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                },
                {
                    "content": "Figure 3. Fork length (mm) and wet weight (g) of",
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                },
                {
                    "content": "juvenile fall-run chinook salmon collected at loca-",
                    "polygon": [
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                    "spans": [
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                },
                {
                    "content": "tions in the San Francisco Estuary and the Gulf of",
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                },
                {
                    "content": "the Farallones during April-June 1995. Salmon",
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                },
                {
                    "content": "were obtained from the Sacramento-San Joaquin",
                    "polygon": [
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                },
                {
                    "content": "Delta (Delta), San Francisco Bay (Bay), Gulf of the",
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                    ]
                },
                {
                    "content": "Farallones (Gulf) and hatchery releases",
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                    ]
                },
                {
                    "content": "(Hatch/Rel). Values are means; error bars denote",
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                    ]
                },
                {
                    "content": "standard error.",
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                    "spans": [
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                    ]
                },
                {
                    "content": "tained significantly greater concentrations of _",
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                },
                {
                    "content": "chlordanes, E DDTs, and E PCBs than fish from the",
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                },
                {
                    "content": "delta or hatcheries (P<0.05). This suggests signifi-",
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                {
                    "content": "cant sources of organic contaminants originate",
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                },
                {
                    "content": "within the estuary. Polycyclic aromatic hydrocar-",
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                },
                {
                    "content": "bon concentrations in livers did not vary among",
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                    "content": "locations. Organic contaminants in stomach con-",
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                },
                {
                    "content": "tents were not significantly different among loca-",
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                },
                {
                    "content": "tions, except for _ DDT which was elevated in fish",
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                    ]
                },
                {
                    "content": "caught in the delta. Unmetabolized DDT was found",
                    "polygon": [
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                    ]
                },
                {
                    "content": "in 80% of field samples. In general, levels of organic",
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                },
                {
                    "content": "contaminants were three- to ten-fold lower in fish",
                    "polygon": [
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                },
                {
                    "content": "collected in 1995 compared to those assessed in 1992",
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                },
                {
                    "content": "by researchers from the NMFS Northwest Fisheries",
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                },
                {
                    "content": "Science Center (unpublished report by Usha",
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                },
                {
                    "content": "12",
                    "polygon": [
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                },
                {
                    "content": "TAG/CHOL",
                    "polygon": [
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                },
                {
                    "content": "10",
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                {
                    "content": "8",
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                            "length": 1
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                    ]
                },
                {
                    "content": "TAG/CHOL",
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                {
                    "content": "6",
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                {
                    "content": "4",
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                {
                    "content": "2",
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                            "length": 1
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                    ]
                },
                {
                    "content": "0",
                    "polygon": [
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                    ]
                },
                {
                    "content": "DELTA",
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                    ]
                },
                {
                    "content": "BAY",
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                    ]
                },
                {
                    "content": "GULF",
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                    ]
                },
                {
                    "content": "HATCH/REL",
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                    ]
                },
                {
                    "content": "LOCATION",
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                    ]
                },
                {
                    "content": "Figure 4. Ratio of triacylglycerols (TAG) to choles-",
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                    ]
                },
                {
                    "content": "terol (CHOL) in juvenile fall-run chinook salmon",
                    "polygon": [
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                {
                    "content": "collected at locations in the San Francisco Estuary",
                    "polygon": [
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                    ]
                },
                {
                    "content": "and Gulf of the Farallones.",
                    "polygon": [
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                },
                {
                    "content": "Varanasi submitted to the NMFS Southwest Re-",
                    "polygon": [
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                },
                {
                    "content": "gion). Of 11 metals assessed in composited whole",
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                },
                {
                    "content": "fish samples, only copper and zinc concentrations",
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                {
                    "content": "were significantly elevated in fish obtained in San",
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                },
                {
                    "content": "Francisco Bay compared to those entering the estu-",
                    "polygon": [
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                },
                {
                    "content": "ary at the delta (P<0.0001). Since 1995 was a very",
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                },
                {
                    "content": "wet year with high freshwater outflow and 1992",
                    "polygon": [
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                {
                    "content": "was a drought year with low outflow, the difference",
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                {
                    "content": "in contaminant concentrations may be a function of",
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                {
                    "content": "freshwater flow. Contaminant analyses in more",
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                {
                    "content": "years of varying water flows may confirm this con-",
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                {
                    "content": "tention.",
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                {
                    "content": "The profile of the physiological development of",
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                {
                    "content": "juvenile fall-run chinook salmon during the outmi-",
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                {
                    "content": "gration in 1995 provides a basis for comparison to",
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                {
                    "content": "subsequent outmigrations. Should environmental",
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                },
                {
                    "content": "conditions vary during the remaining study period",
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                {
                    "content": "of 1997 to 1999, such as a return to drought condi-",
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                },
                {
                    "content": "tions typical of the late 1980s and early 1990s, physi-",
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                {
                    "content": "ological and ecological differences in juvenile",
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                    "content": "outmigrants among both wet and dry years may",
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                {
                    "content": "reveal physiological differences influenced by envi-",
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                },
                {
                    "content": "ronmental factors. (R. B. MacFarlane, 415-435-3149,",
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                {
                    "content": "ext.244)",
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                {
                    "content": "12",
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            "words": [
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                    "content": "INFORMATION",
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                    "content": "SERVICES",
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                    "content": "UNIX",
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                {
                    "content": "Specialist",
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                {
                    "content": "Vacancy",
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                    "content": "Filled;",
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                    "content": "Upgrades",
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                    "content": "Completed",
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                    "content": "energy utilization in early life stages of viviparous",
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                    "content": "yellowtail rockfish. In D. MacKinlay and M. Eldridge",
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                },
                {
                    "content": "Laboratory experiments were conducted with gestat-",
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                {
                    "content": "ing adult yellowtail rockfish and field surveys were",
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                    "content": "ing occurring in 23 days and parturition in 29 days.",
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                    "content": "lipid concentrations most directly contributing to the",
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                    "content": "amount of energy per egg. The endogenous energy of",
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                    "content": "yolk and oil globule declined rapidly throughout",
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                    "content": "gestation resulting in limited yolk and oil reserves at",
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                {
                    "content": "parturition. Findings of this research will allow esti-",
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                    "content": "mation of stock biomass and will further under-",
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                {
                    "content": "standing of the underlying factors that contribute to",
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                    ]
                },
                {
                    "content": "recruitment variation.",
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                            "offset": 53194,
                            "length": 22
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                    ]
                },
                {
                    "content": "Gerrodette, T. 1996. Estimation of allowable loggerhead",
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                            "offset": 53217,
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                        }
                    ]
                },
                {
                    "content": "and leatherback turtle mortality in the North Pacific",
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                    ],
                    "spans": [
                        {
                            "offset": 53273,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "Ocean by Potential Biological Removal (PBR) calcula-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 53327,
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                        }
                    ]
                },
                {
                    "content": "tion. In A. B. Bolten, J. A. Wetherall, G. H. Balazs, and",
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                    ],
                    "spans": [
                        {
                            "offset": 53380,
                            "length": 57
                        }
                    ]
                },
                {
                    "content": "S. G. Pooley (eds.), Status of marine turtles in the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 53438,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "Pacific Ocean relevant to incidental take in the Hawaii-",
                    "polygon": [
                        0.9898,
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                    "spans": [
                        {
                            "offset": 53491,
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                        }
                    ]
                },
                {
                    "content": "based pelagic longline fishery, p. 99-104. U.S. Dep.",
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                    "spans": [
                        {
                            "offset": 53548,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "Commer., NOAA Tech. Memo., NOAA-TM-NMFS-",
                    "polygon": [
                        0.9946,
                        4.4601,
                        3.9209,
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                        3.9209,
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                        0.9946,
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                    "spans": [
                        {
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                            "length": 40
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                },
                {
                    "content": "SWFSC-230.",
                    "polygon": [
                        0.9898,
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                        0.9898,
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                    "spans": [
                        {
                            "offset": 53642,
                            "length": 10
                        }
                    ]
                },
                {
                    "content": "Koga, S. K., and G. H. Balazs. 1996. Sex ratios of green",
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                        0.8224,
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                    "spans": [
                        {
                            "offset": 53653,
                            "length": 56
                        }
                    ]
                },
                {
                    "content": "turtles stranded in the Hawaiian Islands. In J. A. Kei-",
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                        3.9304,
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                    ],
                    "spans": [
                        {
                            "offset": 53710,
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                        }
                    ]
                },
                {
                    "content": "nath, D. E. Barnard, J. A. Musick, and B. A. Bell",
                    "polygon": [
                        0.985,
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                    "spans": [
                        {
                            "offset": 53766,
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                    ]
                },
                {
                    "content": "(comps.), Proceedings of the Fifteenth Annual Sympo-",
                    "polygon": [
                        1.0041,
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                    "spans": [
                        {
                            "offset": 53816,
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                        }
                    ]
                },
                {
                    "content": "sium on Sea Turtle Biology and Conservation, Febru-",
                    "polygon": [
                        0.9898,
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                    ],
                    "spans": [
                        {
                            "offset": 53869,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "ary 22-25, 1995, Hilton Head, South Carolina, p. 78-79.",
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                    "spans": [
                        {
                            "offset": 53921,
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                        }
                    ]
                },
                {
                    "content": "U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-",
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                    ],
                    "spans": [
                        {
                            "offset": 53977,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "NMFS-SEFSC-387.",
                    "polygon": [
                        0.9898,
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                        2.0322,
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                        0.9898,
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                    ],
                    "spans": [
                        {
                            "offset": 54023,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "MacFarlane, R. B., and E. C. Norton. 1996. Lipid and",
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                        3.94,
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                    "spans": [
                        {
                            "offset": 54039,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "protein changes during embryo development in the",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 54092,
                            "length": 48
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                    ]
                },
                {
                    "content": "viviparous genus Sebastes: Application to the assess-",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 54141,
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                    ]
                },
                {
                    "content": "ment of reproductive success. In D. MacKinlay and M.",
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                    "spans": [
                        {
                            "offset": 54195,
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                        }
                    ]
                },
                {
                    "content": "Eldridge (eds.), The fish egg: Its biology and culture,",
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                    "spans": [
                        {
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                        }
                    ]
                },
                {
                    "content": "p. 95-102. International Congress on the Biology of",
                    "polygon": [
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "Fishes, American Fisheries Society, Physiology Sec-",
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                    "spans": [
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                            "offset": 54356,
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                    ]
                },
                {
                    "content": "tion, July 14-18, 1996, San Francisco State University.",
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                    ],
                    "spans": [
                        {
                            "offset": 54408,
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                        }
                    ]
                },
                {
                    "content": "Concentrations of total lipid, protein, and lipid classes",
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                    "spans": [
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                    ]
                },
                {
                    "content": "were determined in oocytes and embryos from two",
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                    "spans": [
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                    ]
                },
                {
                    "content": "species of viviparous rockfishes: yellowtail rockfish",
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                    ]
                },
                {
                    "content": "(Sebastes flavidus) and shortbelly rockfish (Sebastes jor-",
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                            "offset": 54624,
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                        }
                    ]
                },
                {
                    "content": "dani). Total lipid, protein, triacylglycerols, sterol/wax",
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                },
                {
                    "content": "esters, nonesterified fatty acids, cholesterol, and polar",
                    "polygon": [
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                },
                {
                    "content": "lipids declined during embryo development. Regres-",
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                },
                {
                    "content": "sion analysis of changes in lipid and protein variables",
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                    ]
                },
                {
                    "content": "depending on the stage of embryo maturation found",
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                    ]
                },
                {
                    "content": "highly significant linear relationships. By solving re-",
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                },
                {
                    "content": "gression equations for the final stage of embryo devel-",
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                },
                {
                    "content": "opment, estimates of the lipid and protein",
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                },
                {
                    "content": "concentrations at birth were obtained. These values",
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                {
                    "content": "provide an estimate of the nutritional and structural",
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                },
                {
                    "content": "biochemical composition of larvae at their earliest life",
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                },
                {
                    "content": "history stage in the environment, and thus, an assess-",
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                },
                {
                    "content": "ment of larval condition and reproductive quality.",
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                },
                {
                    "content": "Data revealed significant differences in the dynamics",
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                },
                {
                    "content": "of lipid and protein depletion during embryogenesis",
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                    ]
                },
                {
                    "content": "between the two rockfish species and among three",
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                },
                {
                    "content": "populations of shortbelly rockfish located at Ascen-",
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                },
                {
                    "content": "sion, Pioneer, and Bodega submarine canyons. Esti-",
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                },
                {
                    "content": "mated concentrations of lipids and protein at birth",
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                    ]
                },
                {
                    "content": "were significantly greater in shortbelly rockfish larvae",
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                    ]
                },
                {
                    "content": "from Ascension Canyon than in those from Pioneer",
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                    "spans": [
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                            "offset": 55748,
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                        }
                    ]
                },
                {
                    "content": "and Bodega Canyons in 1994, suggesting a greater",
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                    ]
                },
                {
                    "content": "potential survival during the time period following",
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                    ]
                },
                {
                    "content": "birth when planktonic food resources are often lim-",
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                    ]
                },
                {
                    "content": "ited. The technique presented here to assess reproduc-",
                    "polygon": [
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                    ]
                },
                {
                    "content": "tive quality or the condition of progeny can be applied",
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                    "spans": [
                        {
                            "offset": 56005,
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                        }
                    ]
                },
                {
                    "content": "in field studies of viviparous teleosts and does not",
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                        {
                            "offset": 56061,
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                        }
                    ]
                },
                {
                    "content": "require detailed laboratory investigations of embryo",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 56114,
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                        }
                    ]
                },
                {
                    "content": "development.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 56167,
                            "length": 12
                        }
                    ]
                },
                {
                    "content": "MacKinlay, D., and M. Eldridge (eds.). 1996. The fish",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 56180,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "egg: Its biology and culture. International Congress",
                    "polygon": [
                        4.3656,
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                    ],
                    "spans": [
                        {
                            "offset": 56234,
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                        }
                    ]
                },
                {
                    "content": "on the Biology of Fishes, American Fisheries Society,",
                    "polygon": [
                        4.3608,
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                    ],
                    "spans": [
                        {
                            "offset": 56287,
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                        }
                    ]
                },
                {
                    "content": "Physiology Section, July 14-18, 1996, San Francisco",
                    "polygon": [
                        4.3703,
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                        7.3158,
                        3.7382,
                        7.3158,
                        3.8769,
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                    ],
                    "spans": [
                        {
                            "offset": 56341,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "State University, 192 p.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 56393,
                            "length": 24
                        }
                    ]
                },
                {
                    "content": "Moser, H. G., and B. C. Mundy. 1996. Bramidae: Pom-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 56418,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "frets. In H. G. Moser (ed.), The early stages of fishes in",
                    "polygon": [
                        4.3656,
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                        7.3206,
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                    ],
                    "spans": [
                        {
                            "offset": 56470,
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                        }
                    ]
                },
                {
                    "content": "the California Current region, p. 964-971. California",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 56529,
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                        }
                    ]
                },
                {
                    "content": "Cooperative Oceanic Fisheries Investigations Atlas",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 56583,
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                        }
                    ]
                },
                {
                    "content": "No. 33.",
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                    ],
                    "spans": [
                        {
                            "offset": 56634,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "Okechi, J. K., and J. J. Polovina. 1995. An evaluation of",
                    "polygon": [
                        4.2125,
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                        4.9572,
                        7.3253,
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                        4.2125,
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                    "spans": [
                        {
                            "offset": 56642,
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                        }
                    ]
                },
                {
                    "content": "artificial shelters in the artisanal spiny lobster fishery",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 56700,
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                        }
                    ]
                },
                {
                    "content": "in Gazi Bay, Kenya. S. Afr. J. Mar. Sci. 16:373-376.",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Two designs of artificial shelters were evaluated for",
                    "polygon": [
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                        {
                            "offset": 56812,
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                        }
                    ]
                },
                {
                    "content": "use in the artisanal spiny lobster fishery in Gazi Bay,",
                    "polygon": [
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                            "offset": 56866,
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                    ]
                },
                {
                    "content": "Kenya. Both types of shelter were effective in aggre-",
                    "polygon": [
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                            "offset": 56922,
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                        }
                    ]
                },
                {
                    "content": "gating the spiny lobster Panulirus ornatus in nearshore",
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                },
                {
                    "content": "seagrass beds. Lobsters aggregatedat the shelters",
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                },
                {
                    "content": "were caught by free-diving fishermen, using spear-",
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                {
                    "content": "guns and hand nets. Mean lobster catches taken from",
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                    "content": "50% of those taken farther offshore in natural reefs. No",
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                    "content": "significant difference was found in the size or sex",
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                    "content": "composition between shelter and reef-caught lobsters.",
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                    "content": "coastal upwelling indices. In C. M. Isaacs and V. L.",
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                    "content": "Tharp (eds.), Proceedings of the Twelfth Annual Pa-",
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                    "content": "cific Climate (PACLIM) Workshop. Interagency Eco-",
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                {
                    "content": "logical Studies Program for the Sacramento-San",
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                    "content": "Joaquin Estuary, p.63-99. Tech. Rep. 46.",
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                {
                    "content": "migration of northern bluefin tuna (Thunnus thynnus)",
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                    "content": "coherent with climate-induced change in prey abun-",
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                    "content": "dance. Fish. Oceanogr. 5:114-119.",
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                    "content": "El",
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                    "content": "T-96-01,",
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                    "content": "p.",
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                    "content": "of reduced bluefin migration coincides with a period",
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                    "content": "when a prey of bluefin, Japanese sardine (Sardinops",
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                    "content": "sized that in years when sardines are abundant off",
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                    "content": "ern Pacific compared with years when sardines are",
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                {
                    "content": "scarce. Currently, the abundance of sardines off Japan",
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                {
                    "content": "is declining. If this decline continues, this hypothesis",
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                    "content": "predicts an increase in bluefin migrating north of Ha-",
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                {
                    "content": "waii and into the eastern Pacific.",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "Rosenfeld, L., M. Noble, C. Pilskain, and F. Schwing. 1996.",
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                    ]
                },
                {
                    "content": "Circulation within Monterey Submarine Canyon. In",
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                    "spans": [
                        {
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                        }
                    ]
                },
                {
                    "content": "Office of Naval Research Annual Program Report",
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                    ],
                    "spans": [
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                            "offset": 59179,
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                        }
                    ]
                },
                {
                    "content": "ONR 32196-14, p. 189-200.",
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                    ],
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                        }
                    ]
                },
                {
                    "content": "Van Geen, A., and D. M. Husby. 1996. Cadmium in the",
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                    ],
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                        }
                    ]
                },
                {
                    "content": "California Current system: Tracer of past and present",
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                    ],
                    "spans": [
                        {
                            "offset": 59304,
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                        }
                    ]
                },
                {
                    "content": "upwelling. J. of Geophys. Res. 101:3489-3507.",
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                    ]
                },
                {
                    "content": "Wyneken, J., and G. H. Balazs. 1996. Morphological dif-",
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                    ]
                },
                {
                    "content": "ferences in hind flippers of hatchling green turtles",
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                    "spans": [
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                        }
                    ]
                },
                {
                    "content": "from the Hawaiian Islands and Florida, USA. In J. A.",
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                    ]
                },
                {
                    "content": "Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell",
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                    ]
                },
                {
                    "content": "(comps.), Proceedings of the Fifteenth Annual Sympo-",
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                    ]
                },
                {
                    "content": "sium on Sea Turtle Biology and Conservation, Febru-",
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                    ]
                },
                {
                    "content": "ary 22-25, 1995, Hilton Head, South Carolina, p.",
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                },
                {
                    "content": "348-349. U.S. Dep. Commer., NOAA Tech. Memo.,",
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                    ]
                },
                {
                    "content": "NOAA-TM-NMFS-SEFSC-387.",
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                        }
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                },
                {
                    "content": "Yoklavich, M., V. Loeb, M. Nishimoto, and B. Daly. 1996.",
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                },
                {
                    "content": "Nearshore assemblages of larval rockfishes and their",
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                },
                {
                    "content": "physical environment off central California during an",
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                {
                    "content": "extended El Niño event, 1991-1993. Fish. Bull., U.S.",
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                    ]
                },
                {
                    "content": "94:766-782.",
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                },
                {
                    "content": "Approved by Science Director, SWR",
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                    ]
                },
                {
                    "content": "Aguirre, A. A., G. H. Balazs, and T. R. Spraker. Oro-",
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                    ]
                },
                {
                    "content": "pharyngeal fibropapillomas of green turtles (Chelonia",
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                },
                {
                    "content": "mydas) in the Hawaiian Islands. For consideration for",
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                },
                {
                    "content": "publication in Veterinary Research.",
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                {
                    "content": "Aguirre, A. A., T. R. Spraker, and G. H. Balazs. Spiror-",
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                {
                    "content": "chidiasis in green turtles (Chelonia mydas) with fi-",
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                    "content": "bropapillomatosis in the Hawaiian Islands. For",
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                    "content": "consideration for publication in Journal of Wildlife",
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                {
                    "content": "Diseases.",
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                },
                {
                    "content": "Balazs, G. H., A. A. Aguirre, and S. K. K. Murakawa.",
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                {
                    "content": "Occurrence of oral fibropapillomas in the Hawaiian",
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                    "content": "green turtle: Differential disease expression. For con-",
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                    "content": "sideration for publication in Marine Turtle News-",
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                {
                    "content": "letter.",
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                    "content": "using commercial fisheries data: Simulation models",
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                    "content": "and time series analysis of Hawaii's yellowfin tuna",
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                    ]
                },
                {
                    "content": "fisheries. For consideration for publication in Pro-",
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                    "spans": [
                        {
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                        }
                    ]
                },
                {
                    "content": "ceedings of the 2nd World Fishery Congress.",
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                    ]
                },
                {
                    "content": "Sakuma, K. M., F. B. Schwing, K. Baltz, D. Roberts, H. A.",
                    "polygon": [
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                    ]
                },
                {
                    "content": "Parker, and S. Ralston. The physical oceanography off",
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                    "spans": [
                        {
                            "offset": 61054,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "the central California coast during May-June, 1995: a",
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                    "spans": [
                        {
                            "offset": 61108,
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                        }
                    ]
                },
                {
                    "content": "summary of CTD data from pelagic juvenile rockfish",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61162,
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                        }
                    ]
                },
                {
                    "content": "surveys. For consideration for publication in NOAA",
                    "polygon": [
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                    "spans": [
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                            "offset": 61213,
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                        }
                    ]
                },
                {
                    "content": "Technical Memorandum NMFS.",
                    "polygon": [
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                    ],
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                        {
                            "offset": 61264,
                            "length": 26
                        }
                    ]
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                {
                    "content": "Administrative Reports",
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                    "spans": [
                        {
                            "offset": 61291,
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                        }
                    ]
                },
                {
                    "content": "Administrative Reports are strictly for internal",
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                    ],
                    "spans": [
                        {
                            "offset": 61314,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "use only and are not to be cited or treated",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61363,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "as publications.",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61407,
                            "length": 16
                        }
                    ]
                },
                {
                    "content": "Honolulu",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 61424,
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                        }
                    ]
                },
                {
                    "content": "Hamm, D. C., N. T. S. Chan, and M. M. C. Quach. 1996.",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 61433,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "Fishery statistics of the western Pacific, Volume XI.",
                    "polygon": [
                        4.538,
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                        7.4851,
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                    "spans": [
                        {
                            "offset": 61487,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "SWFSC Admin. Rep., Honolulu, H-96-08, var. p.",
                    "polygon": [
                        4.5333,
                        3.8483,
                        7.2024,
                        3.8675,
                        7.1976,
                        4.0112,
                        4.5333,
                        3.9777
                    ],
                    "spans": [
                        {
                            "offset": 61541,
                            "length": 45
                        }
                    ]
                },
                {
                    "content": "Pooley, Samuel G. 1996. Economic determination of the",
                    "polygon": [
                        4.3703,
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                        7.4899,
                        4.0975,
                        7.4899,
                        4.2413,
                        4.3703,
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                    ],
                    "spans": [
                        {
                            "offset": 61587,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "optimal number of Northwestern Hawaiian Islands",
                    "polygon": [
                        4.538,
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                        4.2413,
                        7.4851,
                        4.3802,
                        4.5333,
                        4.3707
                    ],
                    "spans": [
                        {
                            "offset": 61641,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "bottomfish vessels. SWFSC Admin. Rep., Honolulu,",
                    "polygon": [
                        4.5189,
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                        7.4851,
                        4.3946,
                        7.4851,
                        4.5384,
                        4.5189,
                        4.5096
                    ],
                    "spans": [
                        {
                            "offset": 61689,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "H-96-07, 21 p.",
                    "polygon": [
                        4.5285,
                        4.5144,
                        5.3,
                        4.5288,
                        5.2952,
                        4.6678,
                        4.5285,
                        4.6534
                    ],
                    "spans": [
                        {
                            "offset": 61738,
                            "length": 14
                        }
                    ]
                },
                {
                    "content": "La Jolla",
                    "polygon": [
                        5.645,
                        4.8403,
                        6.1817,
                        4.8451,
                        6.1769,
                        4.9889,
                        5.645,
                        4.9841
                    ],
                    "spans": [
                        {
                            "offset": 61753,
                            "length": 8
                        }
                    ]
                },
                {
                    "content": "Barlow, J. and S. Sexton. 1996. The effect of diving and",
                    "polygon": [
                        4.3607,
                        5.0847,
                        7.4756,
                        5.1087,
                        7.4756,
                        5.2573,
                        4.3607,
                        5.2237
                    ],
                    "spans": [
                        {
                            "offset": 61762,
                            "length": 56
                        }
                    ]
                },
                {
                    "content": "searching behavior on the probability of detecting",
                    "polygon": [
                        4.5189,
                        5.2381,
                        7.4804,
                        5.2573,
                        7.4756,
                        5.4058,
                        4.5141,
                        5.3771
                    ],
                    "spans": [
                        {
                            "offset": 61819,
                            "length": 50
                        }
                    ]
                },
                {
                    "content": "track-line groups, go, of long-diving whales during",
                    "polygon": [
                        4.5237,
                        5.4154,
                        7.4804,
                        5.4346,
                        7.4756,
                        5.5831,
                        4.5237,
                        5.5592
                    ],
                    "spans": [
                        {
                            "offset": 61870,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "line-transect surveys. SWFSC Admin. Rep., La Jolla,",
                    "polygon": [
                        4.5237,
                        5.564,
                        7.4804,
                        5.5783,
                        7.4804,
                        5.7269,
                        4.5237,
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                    ],
                    "spans": [
                        {
                            "offset": 61922,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "LJ-96-14, 21 p.",
                    "polygon": [
                        4.5237,
                        5.6982,
                        5.3383,
                        5.7173,
                        5.3383,
                        5.8611,
                        4.5189,
                        5.8419
                    ],
                    "spans": [
                        {
                            "offset": 61974,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "Edwards, E.F. 1996. International Dolphin Conservation",
                    "polygon": [
                        4.356,
                        5.9378,
                        7.4708,
                        5.9617,
                        7.466,
                        6.1055,
                        4.356,
                        6.0768
                    ],
                    "spans": [
                        {
                            "offset": 61990,
                            "length": 54
                        }
                    ]
                },
                {
                    "content": "Act Annual Report to Congress - 1995. SWFSC",
                    "polygon": [
                        4.5141,
                        6.0863,
                        7.466,
                        6.1007,
                        7.466,
                        6.2445,
                        4.5141,
                        6.2301
                    ],
                    "spans": [
                        {
                            "offset": 62045,
                            "length": 43
                        }
                    ]
                },
                {
                    "content": "Admin. Rep., La Jolla, LJ-96-08, 16 p.",
                    "polygon": [
                        4.5141,
                        6.2253,
                        6.5555,
                        6.2397,
                        6.5507,
                        6.4074,
                        4.5141,
                        6.3835
                    ],
                    "spans": [
                        {
                            "offset": 62089,
                            "length": 38
                        }
                    ]
                },
                {
                    "content": "Gerrodette, T. and D. M. Palacios. 1996. Estimates of",
                    "polygon": [
                        4.3512,
                        6.4649,
                        7.4708,
                        6.4841,
                        7.4708,
                        6.6231,
                        4.3512,
                        6.5991
                    ],
                    "spans": [
                        {
                            "offset": 62128,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "cetacean abundance in EEZ waters of the eastern tropi-",
                    "polygon": [
                        4.5141,
                        6.6231,
                        7.4564,
                        6.6375,
                        7.4564,
                        6.7812,
                        4.5141,
                        6.7573
                    ],
                    "spans": [
                        {
                            "offset": 62182,
                            "length": 54
                        }
                    ]
                },
                {
                    "content": "cal Pacific. (In English and Spanish). SWFSC Admin.",
                    "polygon": [
                        4.5189,
                        6.7669,
                        7.4612,
                        6.7764,
                        7.4564,
                        6.925,
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                    ],
                    "spans": [
                        {
                            "offset": 62237,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "Rep., La Jolla, LJ-96-10, 28 p.",
                    "polygon": [
                        4.5093,
                        6.9154,
                        6.0859,
                        6.925,
                        6.0859,
                        7.0736,
                        4.5093,
                        7.0592
                    ],
                    "spans": [
                        {
                            "offset": 62289,
                            "length": 31
                        }
                    ]
                },
                {
                    "content": "LeBoeuf, B. J. 1996. Northern elephant seals at Año",
                    "polygon": [
                        4.3512,
                        7.1455,
                        7.4612,
                        7.1694,
                        7.4564,
                        7.3132,
                        4.3464,
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                    ],
                    "spans": [
                        {
                            "offset": 62321,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "Nuevo during the breeding seasons of 1992-1996",
                    "polygon": [
                        4.5045,
                        7.294,
                        7.4612,
                        7.3084,
                        7.4612,
                        7.4522,
                        4.5045,
                        7.4426
                    ],
                    "spans": [
                        {
                            "offset": 62373,
                            "length": 46
                        }
                    ]
                },
                {
                    "content": "(contract report). SWFSC Admin. Rep., La Jolla,",
                    "polygon": [
                        4.5045,
                        7.4474,
                        7.4564,
                        7.457,
                        7.4564,
                        7.6103,
                        4.5045,
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                    ],
                    "spans": [
                        {
                            "offset": 62420,
                            "length": 47
                        }
                    ]
                },
                {
                    "content": "LJ-96-12C, 8 p.",
                    "polygon": [
                        4.4997,
                        7.5816,
                        5.3431,
                        7.5864,
                        5.3431,
                        7.7541,
                        4.4997,
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                    ],
                    "spans": [
                        {
                            "offset": 62468,
                            "length": 15
                        }
                    ]
                },
                {
                    "content": "Palacios, D.M. and T. Gerrodette. 1996. Potential impact",
                    "polygon": [
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                        7.4708,
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                        7.466,
                        7.9985,
                        4.3416,
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                    ],
                    "spans": [
                        {
                            "offset": 62484,
                            "length": 56
                        }
                    ]
                },
                {
                    "content": "of artisanal gillnet fisheries on small cetacean popula-",
                    "polygon": [
                        4.5093,
                        7.9793,
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                        7.9937,
                        7.4612,
                        8.1471,
                        4.5093,
                        8.1183
                    ],
                    "spans": [
                        {
                            "offset": 62541,
                            "length": 56
                        }
                    ]
                },
                {
                    "content": "tions in the eastern tropical Pacific. (In English and",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 62598,
                            "length": 54
                        }
                    ]
                },
                {
                    "content": "Spanish). SWFSC Admin. Rep., La Jolla, LJ-96-11,",
                    "polygon": [
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                        8.2812,
                        7.466,
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                    ],
                    "spans": [
                        {
                            "offset": 62653,
                            "length": 48
                        }
                    ]
                },
                {
                    "content": "16 p.",
                    "polygon": [
                        4.5093,
                        8.4202,
                        4.7872,
                        8.425,
                        4.7824,
                        8.5544,
                        4.5045,
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                    ],
                    "spans": [
                        {
                            "offset": 62702,
                            "length": 5
                        }
                    ]
                },
                {
                    "content": "Tiburon",
                    "polygon": [
                        5.621,
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                        6.1673,
                        8.7269,
                        6.1673,
                        8.8803,
                        5.621,
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                    ],
                    "spans": [
                        {
                            "offset": 62708,
                            "length": 7
                        }
                    ]
                },
                {
                    "content": "Adams, P. B., T. E. Laidig, K. R. Silberberg, M. J. Bowers,",
                    "polygon": [
                        4.3512,
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                        9.0001,
                        7.4564,
                        9.1439,
                        4.3512,
                        9.1199
                    ],
                    "spans": [
                        {
                            "offset": 62716,
                            "length": 59
                        }
                    ]
                },
                {
                    "content": "B. M. Jarvis, K. M. Sakuma, K. Baltz, and D. P. Wood-",
                    "polygon": [
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                    ],
                    "spans": [
                        {
                            "offset": 62776,
                            "length": 53
                        }
                    ]
                },
                {
                    "content": "bury. 1996. Historical and current presence-absence",
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                    ],
                    "spans": [
                        {
                            "offset": 62830,
                            "length": 51
                        }
                    ]
                },
                {
                    "content": "data of coho salmon (Oncorhynchus kisutch) in the Cen-",
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                    "spans": [
                        {
                            "offset": 62882,
                            "length": 54
                        }
                    ]
                },
                {
                    "content": "tral California Evolutionary Significant Unit. SWFSC",
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                        {
                            "offset": 62937,
                            "length": 52
                        }
                    ]
                },
                {
                    "content": "Admin. Rep., Tiburon, T-96-01, 24 p.",
                    "polygon": [
                        4.5093,
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                        6.5172,
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                    "spans": [
                        {
                            "offset": 62990,
                            "length": 36
                        }
                    ]
                },
                {
                    "content": "15",
                    "polygon": [
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                    "spans": [
                        {
                            "offset": 63027,
                            "length": 2
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                    ]
                }
            ],
            "spans": [
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            ]
        },
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                {
                    "content": "STATES",
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                    "content": "DEPARTMENT",
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                    "content": "OF",
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                {
                    "content": "COMMERCE",
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                {
                    "content": "NATIONAL",
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                {
                    "content": "OCEANIC",
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            "content": "Third Quarter 1996"
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            "content": "ANTARCTIC ECOSYSTEM RESEARCH GROUP SWFSC to Host CCAMLR Meetings in 1997 1"
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            "content": "Page"
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            "content": "COASTAL FISHERIES RESOURCES DIVISION Mitochondrial DNA Techniques Used to Identify Larval Rockfishes. 1"
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            "content": "Whale Habitat and Prey Study Completed"
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            "content": "HONOLULU LABORATORY"
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            "content": "Open House Held Aboard Townsend Cromwell ......"
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            "content": "PACIFIC FISHERIES ENVIRONMENTAL GROUP"
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            "content": "PELAGIC FISHERIES RESOURCES DIVISION Annual Shark Abundance Survey Completed."
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            "content": "TIBURON LABORATORY 14th Annual Juvenile Rockfish Survey Completed."
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            "content": "INFORMATION TECHNOLOGY SERVICES"
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            "content": "UNIX Computer Specialist Vacancy Filled; Computer Upgrades Completed 13"
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            "content": "SOUTHWEST FISHERIES SCIENCE CENTER"
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            "content": "CENTER ADMINISTRATION- La Jolla, California"
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            "content": "Science Director, SWR Michael F.Tillman"
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            "content": "Information Technology Services Rob Bistodeau Executive Officer Sherrie L. Rasmussen"
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            "content": "Honolulu Laboratory, Director"
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            "content": "Pelagic Fisheries Resources Division, Chief Gary T. Sakagawa La Jolla, California"
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            "content": "Tiburon Laboratory, Director .......... Alec MacCall Tiburon, California"
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            "content": "This report does not constitute a publication and is for information only. Its contents should not be cited or reproduced."
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            "content": "Editor: Maryann A. Rodriguez Layout: Roy S. Allen"
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                }
            ],
            "content": "The Report of Activities of the Southwest Fisheries Science Center is compiled at La Jolla from material submitted by the Center's staff. To change the delivery address of the Report of Activities, or to cancel your subscription, please notify Maryann Rodriguez at P.O. Box 271, La Jolla, CA 92038-0271. Telephone: (619) 546-7063."
        },
        {
            "spans": [
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            "content": "ANTARCTIC ECOSYSTEM RESEARCH GROUP"
        },
        {
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            "content": "La Jolla, California"
        },
        {
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            "content": "SWFSC to Host CCAMLR Meetings in 1997"
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        {
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            ],
            "content": "Division Chief Rennie Holt and Fishery Biolo- gist George Watters were members of the U.S. delegation to the fifteenth meeting of the Com- mission for the Conservation of Antarctic Marine Living Resources (CCAMLR) held in Hobart, Tas- mania, October 21 to November 1, 1996. This report provides a summary of the results of the meeting."
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            ],
            "content": "During the last fishing season, 8,826 tons of finfish, 118,714 tons of krill, 497 tons of crab, and 52 tons of squid were taken by commercial fisher- ies in CCAMLR waters. Almost all of the finfish taken was Patagonian toothfish (Dissostchus elegi- noides) harvested by Chile and France in waters around South Georgia and Kerguelen Islands."
        },
        {
            "spans": [
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            ],
            "content": "The major harvesting issue faced by the com- mission was notification by six countries of their intent to initiate new fisheries in 1996/97: a squid fishery by the United Kingdom and Korea and longline fisheries for D. eleginoides by South Af- rica, Australia, New Zealand, and Norway. The longline fisheries will occur in several statistical subareas and divisions (management areas for CCAMLR). To regulate these new fisheries, CCAMLR developed an integrated approach which set regulations by area instead of for each country. Regulations included total allowable catch limits (1,980 tons in most areas), provisions to distribute fishing effort over a wide geographic area by permitting a nominal level of exploitation in several fine-scale areas (0.5 degree latitude by 1.0 degree longitude), requirements for vessel ob- servers and monitoring, and use of fishery prac- tices to reduce bird mortality."
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            ],
            "content": "Twenty-one new or amended conservation measures (regulation measures) were adopted, including measures regarding D. eleginoides and mackerel icefish (Champsocephalus gunnari). The latter measure sets a catch limit of 1,300 tons and a by-catch limit for other species, prohibits use of bottom trawls, and prescribes a limited season from May to November 1997."
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            "content": "The commission noted that the U.S. vessel fish- ing for crab during the 1995/96 season ceased because the fishing company did not consider the fishery to be economically viable. Because sev- eral companies from the United States and other countries have expressed considerable interest in participating in the fishery, the commission con- tinued and modified a conservation measure regulating the crab fishery."
        },
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            ],
            "content": "The commission was unable to agree to the text of a U.S .- sponsored measure governing the re- sumption of fisheries that have been closed or lapsed. Commission members and the Scientific Committee were urged to give priority attention to this topic at the next meeting."
        },
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            ],
            "content": "The United States agreed to host several meet- ings at the Southwest Fisheries Science Center (SWFSC) in La Jolla, California, during the inter- cessional period. The meetings will include a group of scientists conducting research in CCAMLR statistical area 48 (the Peninsula, South Orkney Island, and South Georgia Is- land) and joint research in the Elephant Island area, a subgroup on statistical matters, and a working group on monitoring and management. (R. Holt, 619-546-5601)"
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            "content": "COASTAL FISHERIES RESOURCES DIVISION"
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            "content": "La Jolla, California"
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            "content": "Mitochondrial DNA Techniques Used to Identify Larval Rockfishes"
        },
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            "content": "Graduate student Cindy Taylor has used ge- netic methods to individually identify seven spe- cies of larval rockfishes which previously could be identified only collectively by a characteristic black spot on the dorsal fin."
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            "content": "The seven rockfish species in the study group were the widow (Sebastes entomelas), yellowtail (S.flavidus), black (S. melanops), vermilion (S. mini- atus), blue (S. mystinus), canary (S. pinniger), and olive (S. serranoides) rockfishes. Molecular identi- fication techniques were used to differentiate DNA sequence data (the first 800 base pairs of the cytochrome b gene) in this group. DNA frag-"
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            "content": "1"
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            "content": "10 base pair ladder"
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            "content": "Widow"
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            "content": "Yellowtail"
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            "content": "Black"
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            "content": "Vermilion"
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            "content": "Blue"
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            "content": "Canary"
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            "content": "Olive"
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            "content": "Figure 1. Restriction patterns of mitochondrial cy- tochrome b gene for seven species of larval rock- fishes."
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            "content": "ments were then amplified and visualized using ethidium bromide under ultraviolet light (Fig. 1)."
        },
        {
            "spans": [
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            "content": "As seen in the Figure 1, species-specific recog- nition sites for three enzymes provided unique banding patterns for each of the seven species. The protocol is now being tested on multiple in- dividuals to determine intraspecific polymor- phism prior to using the technique to verify identifications of juveniles collected during rock- fish cruises conducted in May-June 1996. This promising and economical method of species identification using molecular techniques will al- low Tiburon Laboratory scientists to incorporate these additional rockfish species into a modified egg-production model for estimating biomass. (R. Vetter, 619-546-7125)"
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            "content": "MARINE MAMMAL DIVISION"
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            "content": "La Jolla, California"
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            "content": "Whale Habitat and Prey Study Completed"
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            "content": "Blue whales are common visitors to the western Channel Islands off California from June through September, where they come to feed on dense swarms of krill. To learn more about how blue whales use these summer feeding grounds and what this activity might mean for the global recov- ery of blue whale stocks, the Marine Mammal Divi- sion conducted a Whale Habitat and Prey Study aboard the NOAA research vessel David Starr Jordan from July 10 through August 4, 1996. This study, like one in August of last year, was designed to study the distribution and activities of blue whales and other large whales, to survey the distribution of prey organisms (krill), and to measure physical and biological habitat variables that influence the distri- bution of whales and prey. The cruise was divided into a large-scale survey (10 days) between stations separated by 23 miles and a small-scale survey around the Channel Islands where blue whales feed (13 days)."
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            ],
            "content": "Researchers made 314 blue whale sightings, al- most all on the north side of San Miguel and Santa Rosa Islands (Fig. 1). Other whale sightings in- cluded 20 humpback whales, 16 fin whales, 11 minke whales, and 91 unidentified balaenopterids (probably blue whales, but may have been fin whales). Thirty-two blue whales were photo- graphed for identification with individuals in a catalog maintained by Cascadia Research. Biopsy samples for genetic analysis of stock affinity were collected from 19 blue whales, eight fin whales, six bottlenose dolphins, and one Pacific white-sided dolphin. Dolphin sightings included 99 common dolphin, 61 Risso's dolphin, and 40 Pacific white- sided dolphin."
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            "content": "Krill were sampled with a three-frequency Sim- rad EK-500 echo sounder by scientists from the Antarctic Ecosystem Research Group. An Isaacs- Kidd midwater trawl was used to make oblique tows at the large-scale grid stations. A 1-meter mul- tiple opening-closing net environmental sampling system was used to sample observed acoustic tar- gets during the small-scale survey. Dense layers of the euphausiid Euphausia pacifica were found ex-"
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            "content": "2"
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            "content": "34.5°N"
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            "content": "WHAPS96 July 11 - August 3"
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            "content": "8"
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            "content": "O"
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            "content": "34.0°N"
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            "content": "4"
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            "content": "Whale Sightings"
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            "content": "33.5°N"
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            "content": "A"
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            "content": "Blue or Fin"
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            "content": "Minke"
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            "content": "121°W"
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            "content": "120°W"
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            "content": "119°W"
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            ],
            "content": "Figure 1. WHAPS96 on-effort tracklines and whale sightings."
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        {
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            ],
            "content": "tending off the shelf edge on the north side of the islands. On the broad shelf off the northwest side of San Miguel Island, where blue whales were most abundant, dense patches of the larger euphausiid Thysanoessa spinifera were found."
        },
        {
            "spans": [
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            ],
            "content": "The Channel Islands National Marine Sanctu- ary's research vessel Ballena was used to explore whale feeding behavior. Scientists from the Uni- versity of California at Santa Cruz spent three weeks tagging blue whales with radio tags that recorded time and depth and allowed tracking of a whale's position when it surfaced. Four whales were tagged and tracked during the study. Operations were hampered on many days by strong northwesterly winds. The Bal- lena was equipped with a two-frequency echo sounder to detect krill in the vicinity of the tagged whales. Recovered tags showed that whales dived into and moved through krill swarms both near the bottom on the shelf and off the shelf edge."
        },
        {
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                }
            ],
            "content": "Oceanographic sampling consisted of 80 con- ductivity-temperature-depth (CTD) casts for 698 chlorophyll samples, 701 nutrient samples, and 119 primary productivity samples. These data showed the water over the shelf on the feeding grounds had been upwelled along the coast north of Point Conception, where strong winds blow from the northwest during summer. The upwelled water is cold and well-mixed and therefore is rich in nutrients and supports a high rate of primary productivity by phytoplankton."
        },
        {
            "spans": [
                {
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            ],
            "content": "The oceanographic and bathymetric characteristics of the northwestern Channel Islands result in dense patches of krill which make this a critical habitat for the world's largest stock of blue whales. (P. Fiedler, 619-546-7016)"
        },
        {
            "spans": [
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            ],
            "content": "HONOLULU LABORATORY"
        },
        {
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                    "length": 16
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            ],
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            ],
            "content": "Honolulu, Hawaii"
        },
        {
            "spans": [
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                    "offset": 11383,
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            ],
            "content": "PROTECTED SPECIES INVESTIGATION"
        },
        {
            "spans": [
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                    "offset": 11415,
                    "length": 40
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            ],
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            ],
            "content": "Open House Held Aboard Townsend Cromwell"
        },
        {
            "spans": [
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                    "offset": 11456,
                    "length": 427
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            ],
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            ],
            "content": "An open house, sponsored by the Honolulu Laboratory in celebration of the 125th anniver- sary of the National Marine Fisheries Service (NMFS), was held on Labor Day 1996 aboard the NOAA research vessel Townsend Cromwell. Long-time employees of the Honolulu Labora- tory characterized this celebration, held at Pier 9 of the Aloha Tower Marketplace in downtown Honolulu, as one of the laboratory's most suc- cessful open houses."
        },
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            ],
            "content": "An estimated 1,000 visitors toured the 164-ft ship, learning firsthand from laboratory staff and Townsend Cromwell crew members about NMFS ocean-going research activities in the western Pacific and the vital role the Townsend Cromwell plays in these activities. Laboratory displays included a planktonic life-history poster in the wet lab, a longline economics poster with associated longline gear and lobster fishing gear on the foredeck, a scuba sled video presentation in the vessel's lounge area, a satel- lite oceanographic and fisheries recruitment poster and display in the electronics lab, and a turtle poster and display and a monk seal poster and \"critter cam\" video in the galley."
        },
        {
            "spans": [
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            ],
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            ],
            "content": "Townsend Cromwell spends about 240 days at sea annually as the primary research platform in the Honolulu Laboratory's effort to conserve and recover the Hawaiian monk seal and marine turtle populations, to manage viable fishery stocks, and to protect marine life habitats. (M. Higa, 808-943-1211)"
        },
        {
            "spans": [
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            "content": "3"
        },
        {
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            "content": "PACIFIC FISHERIES ENVIRONMENTAL GROUP"
        },
        {
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            "content": "Pacific Grove, California"
        },
        {
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            ],
            "content": "Paper Completed on Nearshore Assemblages of Young Rockfishes and Their Physical Environment off Central California during the 1991-93 El Niño"
        },
        {
            "spans": [
                {
                    "offset": 13081,
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            ],
            "content": "Rockfishes (Sebastes spp.) are tremendously di- verse, dominate coastal benthic assemblages and support heavily exploited recreational and com- mercial fisheries in California. Although rockfish larvae are one of the most prevalent groups in near- shore ichthyoplankton assemblages, especially off central California, their abundance varies widely from year to year. Warm climatological events like El Niño can have substantial effects on recruitment by altering reproduction, larval distribution and abundance, and prey and predator production."
        },
        {
            "spans": [
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            ],
            "content": "A study to evaluate distribution and abundance of rockfish larvae and associated hydrography on small spatial (<20 km) and temporal (biweekly to monthly) scales was conducted in an upwelling center north of Monterey Bay during an extended El Niño event. Secondary objectives were to assess hatch date distributions of early larvae and pelagic juveniles (May-July) of common species, potential larval transport mechanisms, and subsequent strength and timing of nearshore juvenile recruit- ment. This project was supported by the California Sea Grant Program, with collaboration among re- search biologists from the Pacific Fisheries Environ- mental Group (Mary Yoklavich), Moss Landing Marine Laboratories (Valerie Loeb, Mary Nishi- moto, Brendan Daly, and Greg Cailliet), and Cali- fornia Department of Fish and Game (David VenTresca)."
        },
        {
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            ],
            "content": "The prolonged El Niño event resulted in anomal- ously warm, low salinity water to depths over 50 m in nearshore areas, suggesting onshore displace- ment of the California Current. Upwelling was re- duced and delayed, without the usual persistent upwelling plumes in the survey area. Larval rock- fish abundance was similar in both years (winter- spring of 1991-92 and 1992-93), peaking in early February, and was among the highest observed when compared with California Cooperative Oce- anic Fisheries Investigations (CalCOFI) estimates from central California for 1951-84. Based on larval ages, the dominant species (shortbelly rockfish) hatched from December to April, with median"
        },
        {
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            ],
            "content": "hatch dates in mid-February both years. Growth rates of shortbelly rockfish larvae did not differ among months or between years. Relative to 1993, however, rockfish larvae were more abundant and larval shortbelly rockfish were significantly larger at onshore stations in 1992. This coincided with onshore advection of water (namely, reversals in wind direction, warmer and less saline water) dur- ing the onset of the El Niño event, suggesting near- shore retention of larvae. Initiation of upwelling in March and April 1993 and fewer larvae at onshore stations suggest greater offshore transport during the second year."
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            ],
            "content": "Extremely low numbers of pelagic juvenile rock- fish were encountered in summer months of 1992 (2.3 fish per trawl in 56 midwater trawls). In 1993 pelagic juveniles were 20 times more abundant (75.1 fish per trawl in 64 midwater trawls), comprised twice as many taxa, and were substantially larger than in 1992. Juvenile shortbelly rockfish collected were born late in the season during both years (me- dian hatch dates of April 21, 1992 and March 31, 1993); upwelling occurred coincidentally during this period in 1993 but not in 1992. Limited infor- mation on abundance of chaetognaths, a potential predator, indicated high numbers nearshore in Feb- ruary 1992. Much higher survival and recruitment of juveniles in 1993 were likely due to increased offshore transport and perhaps lower predation during the larval stages. The results of this study have been published in Fishery Bulletin, U.S. (M. Yoklavich, 408-648-9036)"
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            "content": "Synopsis of 50 Years of Coastal Upwelling Indices Completed"
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            "content": "The frictional stress of equatorward wind on the ocean's surface, in concert with the earth's rotation, causes water in the surface layer to move away from the west coast of continents. This water is replaced by water which upwells near the coast from depths of 50-100 m and more. Upwelled water is cooler and more saline than the original surface water and typically has much higher levels of nutrients that are key to sustaining the high biological productiv- ity of eastern boundary current marine ecosystems. Temporal variations in upwelling over seasonal to interannual and longer periods due to large-scale shifts in wind patterns and atmospheric systems are linked to variability in fish populations and other biological components in coastal ocean ecosys- tems."
        },
        {
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            "content": "Since the early 1970s, PFEG has generated indices of the intensity of large-scale, wind-induced coastal upwelling at 15 standard locations along the west"
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        {
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            "content": "4"
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            "content": "coast of North America. The indices are based on estimates of offshore Ekman transport driven by geostrophic wind stress, which are derived from six-hourly synoptic and monthly mean surface at- mospheric pressure fields. The pressure fields are interpolated from Northern Hemisphere surface observations and are provided by the U.S. Navy Fleet Numerical Meteorology and Oceanography Center, Monterey, California."
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            "content": "Two sets of upwelling index time series are cal- culated. One set (1967-present) is comprised of daily and weekly means of six-hourly upwelling indices. Availability of synoptic data prior to 1967 is limited. The second set of indices contains monthly time series derived from monthly mean pressure fields (1946-present). The synoptic fields used to construct the monthly mean fields prior to July 1962 were acquired from a variety of sources, rather than the oceanography center. Four NOAA Technical Memoranda describe the methods used to calculate the indices and summarize the up- welling time series; the latest in this series, which is now available, describes the history and derivation of the upwelling index and highlights 50 years of the series."
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            "content": "Figure 1. Charts showing distribution of users of upwelling index data and related information, by their type of affiliation. The left-hand chart shows distribution of individuals receiving upwelling products on a monthly basis. The right-hand chart shows distribution of special requests for upwelling products or information."
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            "content": "and biological variability of zooplankton, crabs, groundfish, small pelagics, salmon, and marine birds."
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            "content": "27°N 116°W -"
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            "content": "24°N 113°W- B"
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            "content": "IB"
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            "content": "21°N 107°W-B"
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            "content": "1 MAY"
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            "content": "1 JUL"
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            "content": "1 SEP"
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            "content": "1 NOV"
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            "content": "1 JAN"
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            "content": "Figure 2. Characteristics of annual cycle of daily upwelling, based on biharmonic fits for period 1967- 91. The upper panel shows maximum and mini- mum amplitudes of annual cycle at each position. The lower panel shows calendar dates of maxima and minima at all locations, and secondary maxima and minima for 21-30°N. Units are m3/s/100m."
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            "content": "AMPLITUDE"
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            "content": "B"
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            "content": "B MINIMUM"
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            "content": "48°N 125°W -"
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            "content": "J 2nd MINIMUM"
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            "content": "tion points in the annual curves at 27°N and 30°N). In contrast, annual cycles north of 30°N have a strong sinusoidal (12-month harmonic) signature. The greatest upwelling rates occur at 33ºN, with a linear decrease in the maximum upwelling indices north to about 54ºN. The greatest annual range occurs at 39ºN. Maximum values north of Wash- ington are about zero, and occur in June-July. Mini- mum indices of about -100 m3/s/100m occur in about January 1."
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            "content": "The time of minimum upwelling occurs within about 15 days of January 1 along the entire coast. The time of strongest upwelling increases from late April off Baja to mid-July off Oregon and Washing- ton, a lag of about 80 days (approximately 30 km per day). The phase of maximum upwelling corre- sponds with certain climatological surface ocean conditions along the coast and oceanographic data which were developed by SWFSC scientist Ron Lynn from CalCOFI sampling data. Maximum sa- linity occurs in May off northern Baja, in June-July off southern California, and in July and August along central California. Salinity maxima along southern Baja occur in fall, coinciding with the sec- ondary upwelling maximum. The temperature mimima found by Lynn in upwelling regions, typi- cally in April-May, is impacted substantially by the seasonal surface heat flux and agrees less well with the time of greatest upwelling. The relationship between the annual cycles of upwelling and tem- perature and salinity is also complicated by advec- tion along the coast and is influenced by the surface water masses of the California Current."
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            "content": "Annual cycles for the daily and monthly data sets are compared in Figure 3. It appears that upwelling indices derived from monthly pressure fields over- estimate the magnitude of upwelling and down- welling based on monthly averages of the daily values. This discrepancy is most evident during the months of the highest absolute values at each loca- tion (for instance, monthly indices overestimate winter downwelling at the northern points and summer upwelling at the southern points). Monthly stress calculations overestimate the daily upwelling rates off Alaska by as much as 130%, and off southern and Baja California by a factor of two. With 25 years of simultaneous daily and monthly data now available, our preliminary interpretation, as reflected in Figure 3, is that the relative discrep- ancy between the two data sets varies with season as well as latitude. A more complete analysis is being developed that will allow the monthly indices to be adjusted temporally and spatially to reflect more realistic estimates of coastal upwelling."
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            "content": "100 -"
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            "content": "57ºN 137°W"
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            "content": "-100."
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            "content": "-200-"
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            "content": "UPWELLING INDICES (m/s/100m 3 coastline)"
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            "content": "100 -"
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            "content": "48°N 125°W"
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            "content": "36°N 122°W"
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            "content": "24°N 113°W"
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            "content": "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec"
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            "content": "Figure 3. The annual cycle of upwelling at repre- sentative west coast locations. The diamonds de- note the mean of the monthly upwelling indices for each calendar month for the period 1967-91. The vertical bars denote +/- one standard deviation for each calendar month. The bold curve is a bihar- monic fit to the daily upwelling indices for the period 1967-91. The shaded area around the bihar- monic curve denotes +/- one standard error, calcu- lated for each Julian Day."
        },
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            ],
            "content": "Rapid advancements in computing and commu- nications since the initial development of the up- welling index over two decades ago have led to more accurate and efficient calculation and distribu- tion of the upwelling products. The upwelling in- dices and many other PFEG data products are now available on the Internet at http://www.pfeg.noaa. gov."
        },
        {
            "spans": [
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            ],
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            ],
            "content": "Although the upwelling indices are by far the most popular product PFEG derives from the sur- face pressure fields, they are but one of several atmospheric and oceanic products generated from the six-hourly pressures. A future technical memo- randum will summarize some of the more impor- tant products. (F. B. Schwing, 408-648-9034)"
        },
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            "content": "Cooperative Workshop Examines the Role of Environmental Data in Fisheries"
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            "content": "The role of NMFS in research, management, and enforcement of regulations for fisheries and pro-"
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            ],
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            "content": "6"
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            "content": "tected species involves a broad range of activities affected by environmental variability. A workshop funded by NOAA's Earth System Data and Infor- mation Management Program was co-convened by PFEG Oceanographer George Boehlert and Jim Schumacher of the Environmental Research Labo- ratories' Pacific Marine Environmental Laboratory at the PFEG facility in Pacific Grove, California. The participants examined how environmental data are applied to practical problems in fisheries research and management. The objectives of the workshop were to assess the current and future needs for environmental databases (oceanographic, atmos- pheric, remote sensing, model output, geological) in fisheries and fisheries-related ecosystem research, to identify data sources and formats, and to recom- mend ways to facilitate access to the data."
        },
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            "content": "More than 50 scientists with expertise in fisheries, physical sciences, environmental data, and comput- ers participated in the meeting. Presentations by fisheries scientists described uses of environmental data in fisheries research and management; physi- cal and computer scientists described sources of environmental data, including that from ocean models and geophysical investigations, and how they are managed. Internet and video-based dem- onstrations described ocean model output and data management systems."
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            "content": "Open discussions were a very important element of the workshop; four working groups addressed real-time or near real-time environmental data ap- plications to fisheries, retrospective environmental data applications to fisheries, applications of oceanographic and atmospheric model output to fisheries, and data delivery systems, data accessibil- ity criteria, and formats. An additional working group was convened to address opportunities and mechanisms for inter-agency cooperation."
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            "content": "The working groups developed more than 40 recommendations. A common thread among the working groups was the need for improved com- munication among fisheries scientists, oceanogra- phers, and the physical and computer scientists who provide model and environmental data. Con- sensus was that follow-up workshops, focused on specific topics (for example, model data applica- tions, remote sensing, and fisheries), be developed. Applications of new environmental technology, in- cluding remotely sensed data, multi-beam sonar technology, and numerical model output, were highly recommended. Parallel efforts among dif- ferent agencies were identified, leading to sugges- tions to promote collaboration and increase the"
        },
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            "content": "interoperability among existing environmental data access systems. The working group on part- nerships for fisheries oceanography recognized the critical need for cooperation and collaboration to identify and fully utilize all environmental data and to model output that could be beneficial to NOAA's environmental stewardship mission."
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            "content": "The workshop proceedings will be published as a NOAA Technical Memorandum. A short workshop report and the full text of recommen- dations are available on the Internet at http://www.pfeg.noaa.gov/workshop. (G. Boehlert, 408-648-8447)"
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            "content": "PFEG'S Historical Data Archives Transferred from Navy Computers to IT-95 System"
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            "content": "Beginning with its inception in 1969, PFEG estab- lished, and has maintained, a strong cooperative relationship with the Navy's Fleet Numerical Mete- orology and Oceanography Center. The Navy pe- riodically seeks practical comments on model development results from PFEG research staff, for whom the center has been a consistent source of observational data sets and meteorological and oceanographic model products."
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            ],
            "content": "Oceanographic and meteorological data are at the heart of PFEG's research. While collecting and processing data for its research efforts, PFEG has made extra efforts to make data available for fisher- ies and other researchers. Researchers chose not to repeatedly access and rely on the formal data re- sources of the center, which include hundreds of products and thousands of observations of little or no interest to PFEG researchers. Instead, PFEG sci- entists extracted subsets of interest from those ar- chives and maintained their own informal archives of data and model products. The data and products were retained and used on center systems in the form as acquired, using applications PFEG devel- oped along with tools developed by the Navy to produce a suite of monthly and special products (for example, the Bakun Upwelling Index)."
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            ],
            "content": "The center has undergone a transition to modern- ize its computer systems to Cray supercomputers and Sun workstations. In response to those changes, PFEG transferred its historical data ar- chives to the IT-95 server at its Pacific Grove facility and established communication paths to assure consistent and ready access to data and products from the Navy. Successful conversion of monthly and special applications, completion of the PFEG archival transfer, and establishment of near real-"
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            "content": "7"
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            "content": "time data acquisition from the center concentrate the processing action onto the IT-95 server. This will also allow for development of new index time series from the archives by modifying computer programs presently being converted. (A. Stroud, 408-648-9037)"
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            "content": "PELAGIC FISHERIES RESOURCES DIVISION"
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            "content": "La Jolla, California"
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            ],
            "content": "TUNA/BILLFISH ASSESSMENT PROGRAM"
        },
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            "content": "Annual Shark Abundance Survey Completed"
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            ],
            "content": "A survey to index shark abundance within the Southern California Bight was conducted from Au- gust 10-29, 1996, aboard the NOAA research vessel David Starr Jordan. Survey objectives were to (1) collect data on shark abundance for population in- dexing, (2) tag and release live and healthy sharks, (3) collect biological data and samples, including reproductive organs, muscle and heart tissue, stom- ach contents, and whole specimens, for several an- cillary studies, and (4) collect data on by-catch species."
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            ],
            "content": "Forty-four longline sets were made within the Southern California Bight, involving a total of 6,211 hooks. Thirty-three sets were made using wire ca- ble leaders during daylight hours, and 11 sets with monofilament nylon were made during nighttime hours. Total catch was 205 shortfin mako sharks (Isurus oxyrinchus), 689 blue sharks (Prionace glauca), 74 pelagic stingrays (Dasyatis violacea), and one swordfish (Xiphias gladius). One California sea lion (Zalophus californianas) and one common mola (Mola mola) were foul-hooked (snagged) during fishing operations. Both were released without harm. Overall catch rate of sharks was 14.4 sharks per 100 hooks. Catch rate for shortfin mako sharks aver- aged 4.0 per 100 hooks but was more than double- 8.5 per 100 hooks-in the most productive survey areas."
        },
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            ],
            "content": "A total of 556 blue sharks and 164 shortfin mako sharks were tagged and released for population and movement studies. Necropsies were conducted on 52 blue sharks, 31 shortfin mako sharks, and one swordfish. Heart, liver, gonad, and muscle tissue"
        },
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            ],
            "content": "were collected for a variety of studies including reproductive condition, DNA analysis, heavy metal and DDT concentrations, and biochemical analysis. Stomachs were collected for feeding pattern studies. Fifty-three pelagic stingrays were collected for age- ing and growth studies. Four whole blue sharks were collected for observer shark identification and anatomy training. Physiological studies of swim- ming energetics were conducted on four shortfin mako sharks and six pelagic stingrays in a variable- speed water tunnel aboard the vessel."
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            "content": "Mexican scientists from Instituto Nacional de la Pesca, Universidad Autonoma de Baja California Sur, and Centro de Investigacion Cientifica y de Educacion Superior de Ensenada, and U.S. scien- tists and student volunteers from NMFS, California Department of Fish and Game, Scripps Institution of Oceanography, Moss Landing Marine Labora- tory, Monterey Bay Aquarium, and California State University at Los Angeles participated in the cruise. (D. Holts, 619-546-7186)"
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            "content": "Newsletters Now Available on the World Wide Web"
        },
        {
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                    "length": 454
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            ],
            "content": "Two popular newsletters produced by the Pe- lagic Fisheries Resources Division are now available on the World Wide Web. Each issue of the Tuna Newsletter and the Billfish Newsletter is posted to the SWFSC's Web site at about the same time that it is mailed to regular subscribers. Back issues are avail- able for 1995 and 1996. The electronic versions of these newsletters contain all the original text, tables, and figures, and other useful information."
        },
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            ],
            "content": "The Tuna Newsletter is published quarterly by the Southwest Region and SWFSC to inform constitu- ents and the general public of the status of U.S. tuna fisheries, the canned tuna industry, and research conducted at the SWFSC and associated organiza- tions. Each issue also provides a calendar of up- coming meetings and conferences and summarizes tuna news stories from around the world."
        },
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                    ]
                }
            ],
            "content": "The Billfish Newsletter is an annual publication produced by the SWFSC as a service to the interna- tional billfish angling community, with an empha- sis on billfish angling in the Pacific, Indo-Pacific and Indian oceans. The results of the International Bill- fish Angler Survey and the Cooperative Marine Game Fish Tagging Program, which are managed by the SWFSC, are described in each issue."
        },
        {
            "spans": [
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            ],
            "boundingRegions": [
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                    "pageNumber": 10,
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            ],
            "content": "The Tuna Newsletter and the Billfish Newsletter can be found on the Web at http://swfsc.ucsd.edu. (A. Jackson, 619-546-7046)"
        },
        {
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            "content": "8"
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            ],
            "content": "TIBURON LABORATORY"
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        {
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                    "length": 19
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            ],
            "content": "Tiburon, California"
        },
        {
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                    "length": 33
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            ],
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            ],
            "content": "GROUNDFISH ANALYSIS INVESTIGATION"
        },
        {
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                    "offset": 35350,
                    "length": 46
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            ],
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            ],
            "content": "14th Annual Juvenile Rockfish Survey Completed"
        },
        {
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                    "length": 397
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            ],
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            ],
            "content": "A research cruise aboard the NOAA research vessel David Starr Jordan was conducted by fishery biologists of the Groundfish Analysis Investigation from May 17 to June 20, 1996. The survey (DSJ- 9606) was designed to study the distribution and abundance of pelagic-staged juvenile rockfish (Se- bastes spp.) in an attempt to identify factors contrib- uting to variability in annual spawning success."
        },
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            ],
            "content": "Juvenile rockfish samples were obtained from midwater trawls conducted at night during three sweeps of an area off the central California coast from Monterey Bay (36ºN) to Point Reyes (38º 10'N) (Fig. 1). A modified Cobb midwater trawl with a 26-m headrope and 1-cm liner was towed for 15 minutes at depth at five or six stations per night. Ship speed was maintained at 2.7 knots while trawl- ing. Target headrope depths were 7, 30 and 100 m and were recorded during each tow by a time-depth recorder attached to the upper bridle."
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            "content": "+"
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                    "length": 4
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            ],
            "content": "38°N"
        },
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                    "length": 1
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            "content": "x"
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            "content": "+"
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            "content": "+"
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            "content": "+"
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                    "length": 4
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            ],
            "content": "37°N"
        },
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                    "length": 10
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            ],
            "content": "+ CTD Only"
        },
        {
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                    "length": 20
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            ],
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                }
            ],
            "content": "Midwater Trawl & CTD"
        },
        {
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                    "length": 5
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            ],
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                }
            ],
            "content": "124°W"
        },
        {
            "spans": [
                {
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                    "length": 5
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            ],
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            ],
            "content": "123°W"
        },
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                    "length": 5
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            ],
            "content": "122°W"
        },
        {
            "spans": [
                {
                    "offset": 36396,
                    "length": 90
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            ],
            "boundingRegions": [
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            ],
            "content": "Figure 1. Map of midwater trawl and CTD stations during juvenile rockfish survey DSJ-9606."
        },
        {
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            ],
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            ],
            "content": "One hundred sixteen midwater trawls were com- pleted. Most of the juvenile rockfish sampled were small (15-25 mm), although the \"blackspot group,\" which consisted of blue, yellowtail, and black rock- fish, ranged in length from 30-40 mm. For the third straight year, juvenile rockfish catch was low (Table 1, see page 10). The total non-shortbelly rockfish catch was the lowest since the three-sweep method was instituted in 1986; the catch of invertebrates and other fish species was also low."
        },
        {
            "spans": [
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            ],
            "content": "Two hundred ninety conductivity-temperature- depth (CTD) casts were completed throughout the day in the vicinity of the midwater trawl transects and at each night trawl station. Temperature and salinity data were obtained and chlorophyll and light levels were measured. Water samples were taken twice daily for fluorometry and salinity cali- brations. Upwelling was intense during the cruise with sea surface temperatures in the 9-10℃ range (Fig. 2). Chlorophyll, light level, and current data will be analyzed at a later date."
        },
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            ],
            "content": "One of several ancillary projects was to deter- mine the distribution and abundance and diel mi- gratory behavior of larval crabs (Cancer spp.) and rockfishes relative to the hydrographic features on the shelf between Bodega Head and Point Arena. Twenty-two Tucker trawls and nine manta tows were conducted in the Gulf of the Farallones and"
        },
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            ],
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            ],
            "content": "10.2"
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            "content": ":6"
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            "content": "38°N"
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            "content": "8'6"
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            "content": "11.4"
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            "content": "12."
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            "content": "37°N"
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            "content": "DSJ9606"
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            ],
            "content": "Sweep 3"
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        {
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            "content": "Temperature"
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            "content": "(℃) at 2 m"
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            "content": "122"
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            "content": "12.2"
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            "content": "124°W"
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        {
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            "content": "123°W"
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            "content": "122°W"
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        {
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            ],
            "content": "Figure 2. Contours of sea surface temperature (℃) measured by CTD probe during the third sweep of juvenile rockfish survey DSJ-9606. CTD stations are represented as + symbols. Contours with hatch marks represent cooler waters."
        },
        {
            "spans": [
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            ],
            "content": "9"
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        {
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                }
            ],
            "content": "Table 1. Number of pelagic young-of-the-year rockfish collected by midwater trawl at standard stations and depths during May-June cruises (1986-96)."
        },
        {
            "spans": [
                {
                    "offset": 38326,
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            "content": "Species"
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            "content": "1986"
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            "content": "1987"
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            "content": "The second survey was conducted September 17-22, 1996, aboard the Moss Landing Marine Labo- ratory's research vessel Point Sur. Net sampling of juvenile fish and euphausiids was conducted at the disposal site stations and additional stations along the perimeter of the disposal site stations. Many unidentified juvenile rockfish were collected which comprise a \"summer spawning\" group. One excep- tional catch of euphausiids occurred in an area a few miles east of the disposal site, where a large concen- tration of birds and marine mammals also was ob- served."
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            ],
            "content": "Ornithologists from H. T. Harvey and Associates and the Point Reyes Bird Observatory recorded the distribution and abundance of sea birds and marine mammals during daytime transects between CTD stations. Birds and mammals were sparse where depths exceeded 1500 m (including the disposal site), but were abundant along the upper shelf break (to 400 m depth). Especially large concentrations of birds and cetaceans were encountered at the upper end of Pioneer Canyon. About 20 species of birds, three species of pinnipeds, four species of whales, and four species of dolphins were observed, which is not unusual for the early fall in this region."
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            "content": "Several physical oceanographic parameters were also measured during the cruise, including currents, temperature, and salinity. The information col- lected will be analyzed to help determine whether disposals have affected abundances of important small fishes, invertebrates, marine mammals, and sea birds, and if their physiological condition was poorer at the disposal site than other areas. (D. Woodbury, 415-435-3149, ext.218)"
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            "content": "GROUNDFISH PHYSIOLOGICAL ECOLOGY INVESTIGATION"
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            "content": "Physiological Ecology of Juvenile Fall-Run Chinook Salmon Studied in the San Francisco Estuary during 1995"
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            "content": "In April 1995, the Physiological Ecology Investi- gation started a multi-year study of the physiologi- cal development of out migrating juvenile chinook salmon (Oncorhynchus tshawytscha). The goal of this research is to determine the interannual variability of growth, development, and health within the San Francisco estuary and near-coastal system and the influences of biotic and abiotic environmental fac- tors. During April to June 1995, approximately 900 juveniles were collected and analyzed from loca- tions spanning the estuary. Fish were obtained from the head of the estuary at the Sacramento River-San Joaquin River Delta, hatchery plants, San Francisco Bay, and the near-coastal ocean (Gulf of the Farallones)."
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            "content": "Results from fall-run chinook juveniles captured in 1995 included estimates of residence time, growth, and energy status. Based on age estimates from otolith analysis, juveniles spent 28 ± 2 days transiting the estuary. During that span, the fish showed a slight, but significant, gain in length and weight (P=0.01) (Fig. 3). However, those captured in the Gulf of the Farallones shortly after leaving the estuary (mean age = 164 ± 4 days compared to 162 2 days for those caught in the estuary) showed greatly increased size (39% increase in fork length, 312% increase in weight), indicating the beneficial nature of ocean entry. Researchers found no signifi- cant differences in protein concentrations in whole fish sampled among collecting locations, suggest- ing protein was not catabolized for energy. Total lipid concentrations, however, declined signifi- cantly (P<0.05) between juveniles entering the estu- ary and those in San Francisco Bay. Significant declines (P<0.001) in triacylglycerols (the primary form of lipid storage) further establish the impor- tance of lipids to energy metabolism during outmi- gration. When triacylglycerols (TAG) were presented as ratios to cholesterol (CHOL) in salmon (a technique that expresses the amount of TAG relative to the amount of tissue present), a progres- sive decline of stored energy was evident as the juveniles transit the estuary and initiate the ocean phase of life (Fig. 4)."
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            "content": "Contaminant analyses revealed that livers from juvenile salmon collected in San Francisco Bay con-"
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            "content": "LOCATION"
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            "content": "Figure 3. Fork length (mm) and wet weight (g) of juvenile fall-run chinook salmon collected at loca- tions in the San Francisco Estuary and the Gulf of the Farallones during April-June 1995. Salmon were obtained from the Sacramento-San Joaquin Delta (Delta), San Francisco Bay (Bay), Gulf of the Farallones (Gulf) and hatchery releases (Hatch/Rel). Values are means; error bars denote standard error."
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            "content": "tained significantly greater concentrations of _ chlordanes, E DDTs, and E PCBs than fish from the delta or hatcheries (P<0.05). This suggests signifi- cant sources of organic contaminants originate within the estuary. Polycyclic aromatic hydrocar- bon concentrations in livers did not vary among locations. Organic contaminants in stomach con- tents were not significantly different among loca- tions, except for _ DDT which was elevated in fish caught in the delta. Unmetabolized DDT was found in 80% of field samples. In general, levels of organic contaminants were three- to ten-fold lower in fish collected in 1995 compared to those assessed in 1992 by researchers from the NMFS Northwest Fisheries Science Center (unpublished report by Usha"
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            "content": "HATCH/REL"
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            ],
            "content": "Figure 4. Ratio of triacylglycerols (TAG) to choles- terol (CHOL) in juvenile fall-run chinook salmon collected at locations in the San Francisco Estuary and Gulf of the Farallones."
        },
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            ],
            "content": "Varanasi submitted to the NMFS Southwest Re- gion). Of 11 metals assessed in composited whole fish samples, only copper and zinc concentrations were significantly elevated in fish obtained in San Francisco Bay compared to those entering the estu- ary at the delta (P<0.0001). Since 1995 was a very wet year with high freshwater outflow and 1992 was a drought year with low outflow, the difference in contaminant concentrations may be a function of freshwater flow. Contaminant analyses in more years of varying water flows may confirm this con- tention."
        },
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            ],
            "content": "The profile of the physiological development of juvenile fall-run chinook salmon during the outmi- gration in 1995 provides a basis for comparison to subsequent outmigrations. Should environmental conditions vary during the remaining study period of 1997 to 1999, such as a return to drought condi- tions typical of the late 1980s and early 1990s, physi- ological and ecological differences in juvenile outmigrants among both wet and dry years may reveal physiological differences influenced by envi- ronmental factors. (R. B. MacFarlane, 415-435-3149, ext.244)"
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            "content": "12"
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            "content": "INFORMATION TECHNOLOGY SERVICES"
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            ],
            "content": "UNIX Computer Specialist Vacancy Filled; Computer Upgrades Completed"
        },
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            ],
            "content": "Richard Cosgrove was selected for a UNIX com- puter specialist vacancy and started working for Information Technology Services in September. His duties are primarily UNIX system administra- tion and scientific application programming sup- port. Cosgrove previously worked under contact for the Coastal Fisheries Resources Division's Coastwatch Program. His experience with UNIX systems and Coastwatch satellite data and his edu- cational background in geographic information sys- tems (GIS) will be useful in developing in-house GIS applications."
        },
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            ],
            "content": "Information Technology Services staff com- pleted major hardware and software upgrades on the La Jolla Laboratory's SGI Challenge L computer. The hardware upgrades consisted of 72GB of disk, 128MB of RAM, a high-capacity digital linear tape stacker backup device (280GB total capacity), and a Lexmark color jet printer capable of printing tabloid size (11 by 17 in) paper. Several new software pack- ages were installed, including True Basic, ImageAl- chemy (graphics conversion software), Vista Extend, Arc/Info GIS, Arc/View GIS, and S-PLUS. (R. Bistodeau, 619-546-7055)"
        },
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            "content": "PUBLICATIONS"
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            "content": "Published"
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                }
            ],
            "content": "Aguirre, A. A., T. Graczyk, and G. H. Balazs. 1996. ELISA test for the detection of anti-blood fluke immuno- globulins in Hawaiian green turtles. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Symposium on Sea Turtle Biology and Conservation, February 22-25, 1995, Hilton Head, South Carolina, p. 5. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS- SEFSC-387."
        },
        {
            "spans": [
                {
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            ],
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                }
            ],
            "content": "Balazs, G. B. 1996. He La Honu -- Turtle Day 1995: In celebration of Hawaiian sea turtles. Mar. Turt. Newsl. 74:15-16."
        },
        {
            "spans": [
                {
                    "offset": 49373,
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                }
            ],
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                }
            ],
            "content": "Balazs, G. B., R. K. Miya, and S. C. Beaver. 1996. Proce- dures to attach a satellite transmitter to the carapace of an adult green turtle, Chelonia mydas. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.),"
        },
        {
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            ],
            "content": "Proceedings of the Fifteenth Annual Symposium on Sea Turtle Biology and Conservation, February 22-25, 1995, Hilton Head, South Carolina, p. 16-20. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS- SEFSC-387."
        },
        {
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                {
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            ],
            "content": "Barlow, J. and T. Gerrodette. 1996. Abundance of cetace- ans in California waters based on 1991 and 1993 ship surveys. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SWFSC-233, 15 p."
        },
        {
            "spans": [
                {
                    "offset": 49996,
                    "length": 360
                }
            ],
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                }
            ],
            "content": "Bence, J. R., A. Stewart-Oaten, and S. C. Schroeter. 1996. Estimating the size of an effect from a Before-After- Control-Impact-Pairs design: The predictive ap- proach applied to a power plant study. In R. J. Schmitt and C. W. Osenberg (eds.), Detecting ecological im- pacts: Concepts and applications in coastal habitats, p. 133-149. Academic Press, San Diego"
        },
        {
            "spans": [
                {
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                }
            ],
            "content": "Boehlert, G. W. 1996. Larval dispersal and survival in tropical reef fishes. In N. V. C. Polunin and C. M. Roberts (eds.), Tropical Reef Fisheries, p. 61-84. Chap- man Hall Publishers, London."
        },
        {
            "spans": [
                {
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            ],
            "content": "Bolten, A. B., K. A. Bjorndal, H. R. Martins, and G. H. Balazs. 1996. Satellite telemetry of pelagic-stage juve- nile loggerheads in the eastern Atlantic. In J. A. Kei- nath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Sympo- sium on Sea Turtle Biology and Conservation, Febru- ary 22-25, 1995, Hilton Head, South Carolina, p. 39-41. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM- NMFS-SEFSC-387."
        },
        {
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            ],
            "content": "Bolten, A. B., J. A. Wetherall, G. H. Balazs, and S. G. Pooley. 1996. Status of marine turtles in the Pacific Ocean relevant to incidental take in the Hawaii-based pelagic longline fishery. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SWFSC-230, 167 p."
        },
        {
            "spans": [
                {
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            ],
            "content": "Castleberry, D. T., J. J. Cech, Jr., D. C. Erman, D. Hankin, M. Healey, G. M. Kondolf, M. Mangel, M. Mohr, P. B. Moyle, J. Nielsen, T. P. Speed, and J. G. Williams. 1996. Uncertainty and instream flow standards. Fisheries 21:8-21."
        },
        {
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            ],
            "content": "Dutton, Peter H., and G. H. Balazs. 1996. Simple biopsy technique for sampling skin for DNA analysis of sea turtles. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Symposium on Sea Turtle Biology and Con- servation, February 22-25, 1995, Hilton Head, South Carolina, p. 78-79. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SEFSC-387."
        },
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            ],
            "content": "Eldridge, M. B., and B. M. Jarvis. 1996. Development and energy utilization in early life stages of viviparous yellowtail rockfish. In D. MacKinlay and M. Eldridge (eds.), The fish egg: Its biology and culture, p. 131-140. International Congress on the Biology of Fishes, American Fisheries Society, Physiology Section, July 14-18, 1996, San Francisco State University."
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            "content": "Laboratory experiments were conducted with gestat- ing adult yellowtail rockfish and field surveys were"
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            ],
            "content": "completed of females in late vitellogenesis and gesta- tion to determine the rate of embryonic and larval development, to examine the different measures of egg quality, and to determine the rate of endogenous energy utilization and tissue assimilation. Embryo- genesis and larval development followed a predictable sequence and showed rapid development with hatch- ing occurring in 23 days and parturition in 29 days. Eggs varied in dry weight and energy content with lipid concentrations most directly contributing to the amount of energy per egg. The endogenous energy of yolk and oil globule declined rapidly throughout gestation resulting in limited yolk and oil reserves at parturition. Findings of this research will allow esti- mation of stock biomass and will further under- standing of the underlying factors that contribute to recruitment variation."
        },
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            ],
            "content": "Gerrodette, T. 1996. Estimation of allowable loggerhead and leatherback turtle mortality in the North Pacific Ocean by Potential Biological Removal (PBR) calcula- tion. In A. B. Bolten, J. A. Wetherall, G. H. Balazs, and S. G. Pooley (eds.), Status of marine turtles in the Pacific Ocean relevant to incidental take in the Hawaii- based pelagic longline fishery, p. 99-104. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS- SWFSC-230."
        },
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            ],
            "content": "Koga, S. K., and G. H. Balazs. 1996. Sex ratios of green turtles stranded in the Hawaiian Islands. In J. A. Kei- nath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Sympo- sium on Sea Turtle Biology and Conservation, Febru- ary 22-25, 1995, Hilton Head, South Carolina, p. 78-79. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM- NMFS-SEFSC-387."
        },
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            ],
            "content": "MacFarlane, R. B., and E. C. Norton. 1996. Lipid and protein changes during embryo development in the viviparous genus Sebastes: Application to the assess- ment of reproductive success. In D. MacKinlay and M. Eldridge (eds.), The fish egg: Its biology and culture, p. 95-102. International Congress on the Biology of Fishes, American Fisheries Society, Physiology Sec- tion, July 14-18, 1996, San Francisco State University."
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            "content": "Concentrations of total lipid, protein, and lipid classes were determined in oocytes and embryos from two species of viviparous rockfishes: yellowtail rockfish (Sebastes flavidus) and shortbelly rockfish (Sebastes jor- dani). Total lipid, protein, triacylglycerols, sterol/wax esters, nonesterified fatty acids, cholesterol, and polar lipids declined during embryo development. Regres- sion analysis of changes in lipid and protein variables depending on the stage of embryo maturation found highly significant linear relationships. By solving re- gression equations for the final stage of embryo devel- opment, estimates of the lipid and protein concentrations at birth were obtained. These values provide an estimate of the nutritional and structural biochemical composition of larvae at their earliest life history stage in the environment, and thus, an assess- ment of larval condition and reproductive quality."
        },
        {
            "spans": [
                {
                    "offset": 55380,
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                }
            ],
            "content": "Data revealed significant differences in the dynamics of lipid and protein depletion during embryogenesis between the two rockfish species and among three populations of shortbelly rockfish located at Ascen- sion, Pioneer, and Bodega submarine canyons. Esti- mated concentrations of lipids and protein at birth were significantly greater in shortbelly rockfish larvae from Ascension Canyon than in those from Pioneer and Bodega Canyons in 1994, suggesting a greater potential survival during the time period following birth when planktonic food resources are often lim- ited. The technique presented here to assess reproduc- tive quality or the condition of progeny can be applied in field studies of viviparous teleosts and does not require detailed laboratory investigations of embryo development."
        },
        {
            "spans": [
                {
                    "offset": 56180,
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                    ]
                }
            ],
            "content": "MacKinlay, D., and M. Eldridge (eds.). 1996. The fish egg: Its biology and culture. International Congress on the Biology of Fishes, American Fisheries Society, Physiology Section, July 14-18, 1996, San Francisco State University, 192 p."
        },
        {
            "spans": [
                {
                    "offset": 56418,
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                }
            ],
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                    ]
                }
            ],
            "content": "Moser, H. G., and B. C. Mundy. 1996. Bramidae: Pom- frets. In H. G. Moser (ed.), The early stages of fishes in the California Current region, p. 964-971. California Cooperative Oceanic Fisheries Investigations Atlas No. 33."
        },
        {
            "spans": [
                {
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                }
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                    ]
                }
            ],
            "content": "Okechi, J. K., and J. J. Polovina. 1995. An evaluation of artificial shelters in the artisanal spiny lobster fishery in Gazi Bay, Kenya. S. Afr. J. Mar. Sci. 16:373-376."
        },
        {
            "spans": [
                {
                    "offset": 56812,
                    "length": 591
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Two designs of artificial shelters were evaluated for use in the artisanal spiny lobster fishery in Gazi Bay, Kenya. Both types of shelter were effective in aggre- gating the spiny lobster Panulirus ornatus in nearshore seagrass beds. Lobsters aggregatedat the shelters were caught by free-diving fishermen, using spear- guns and hand nets. Mean lobster catches taken from the shelters ranged from 0.38 to 0.83 kg trip\"1, around 50% of those taken farther offshore in natural reefs. No significant difference was found in the size or sex composition between shelter and reef-caught lobsters."
        },
        {
            "spans": [
                {
                    "offset": 57404,
                    "length": 295
                }
            ],
            "boundingRegions": [
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                }
            ],
            "content": "Parker, H. 1996. Interannual variability in the PFEG coastal upwelling indices. In C. M. Isaacs and V. L. Tharp (eds.), Proceedings of the Twelfth Annual Pa- cific Climate (PACLIM) Workshop. Interagency Eco- logical Studies Program for the Sacramento-San Joaquin Estuary, p.63-99. Tech. Rep. 46."
        },
        {
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            ],
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                }
            ],
            "content": "Polovina, J. J. 1996. Decadal variation in the trans-Pacific migration of northern bluefin tuna (Thunnus thynnus) coherent with climate-induced change in prey abun- dance. Fish. Oceanogr. 5:114-119."
        },
        {
            "spans": [
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                    "offset": 57899,
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                }
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                }
            ],
            "content": "Northern bluefin tuna (Thunnus thynnus) apparently spawn only in the western Pacific, and a portion of the juveniles migrate to the eastern Pacific. During the past decade, catches of northern bluefin in the eastern Pacific have declined. One possible cause for this decline, proposed by bluefin stock assessment studies, is a decline in the proportion of bluefin migrating out"
        },
        {
            "spans": [
                {
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            "content": "14"
        },
        {
            "spans": [
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            "boundingRegions": [
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            ],
            "content": "of the western Pacific. This hypothesis is examined with several indices of the relative abundance of blue- fin tuna in the western and eastern Pacific. These indices suggest a decline in the proportion of bluefin migrating to the eastern Pacific since 1977. This period of reduced bluefin migration coincides with a period when a prey of bluefin, Japanese sardine (Sardinops melanosticta), were abundant off Japan. It is hypothe- sized that in years when sardines are abundant off Japan, a higher proportion of bluefin stay in the west- ern Pacific compared with years when sardines are scarce. Currently, the abundance of sardines off Japan is declining. If this decline continues, this hypothesis predicts an increase in bluefin migrating north of Ha- waii and into the eastern Pacific."
        },
        {
            "spans": [
                {
                    "offset": 59070,
                    "length": 181
                }
            ],
            "boundingRegions": [
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                    ]
                }
            ],
            "content": "Rosenfeld, L., M. Noble, C. Pilskain, and F. Schwing. 1996. Circulation within Monterey Submarine Canyon. In Office of Naval Research Annual Program Report ONR 32196-14, p. 189-200."
        },
        {
            "spans": [
                {
                    "offset": 59252,
                    "length": 151
                }
            ],
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                    ]
                }
            ],
            "content": "Van Geen, A., and D. M. Husby. 1996. Cadmium in the California Current system: Tracer of past and present upwelling. J. of Geophys. Res. 101:3489-3507."
        },
        {
            "spans": [
                {
                    "offset": 59404,
                    "length": 438
                }
            ],
            "boundingRegions": [
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                    ]
                }
            ],
            "content": "Wyneken, J., and G. H. Balazs. 1996. Morphological dif- ferences in hind flippers of hatchling green turtles from the Hawaiian Islands and Florida, USA. In J. A. Keinath, D. E. Barnard, J. A. Musick, and B. A. Bell (comps.), Proceedings of the Fifteenth Annual Sympo- sium on Sea Turtle Biology and Conservation, Febru- ary 22-25, 1995, Hilton Head, South Carolina, p. 348-349. U.S. Dep. Commer., NOAA Tech. Memo., NOAA-TM-NMFS-SEFSC-387."
        },
        {
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                }
            ],
            "content": "Yoklavich, M., V. Loeb, M. Nishimoto, and B. Daly. 1996. Nearshore assemblages of larval rockfishes and their physical environment off central California during an extended El Niño event, 1991-1993. Fish. Bull., U.S. 94:766-782."
        },
        {
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                {
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            ],
            "content": "Approved by Science Director, SWR"
        },
        {
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                {
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                }
            ],
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                }
            ],
            "content": "Aguirre, A. A., G. H. Balazs, and T. R. Spraker. Oro- pharyngeal fibropapillomas of green turtles (Chelonia mydas) in the Hawaiian Islands. For consideration for publication in Veterinary Research."
        },
        {
            "spans": [
                {
                    "offset": 60304,
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            ],
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            ],
            "content": "Aguirre, A. A., T. R. Spraker, and G. H. Balazs. Spiror- chidiasis in green turtles (Chelonia mydas) with fi- bropapillomatosis in the Hawaiian Islands. For consideration for publication in Journal of Wildlife Diseases."
        },
        {
            "spans": [
                {
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                }
            ],
            "content": "Balazs, G. H., A. A. Aguirre, and S. K. K. Murakawa. Occurrence of oral fibropapillomas in the Hawaiian green turtle: Differential disease expression. For con- sideration for publication in Marine Turtle News- letter."
        },
        {
            "spans": [
                {
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            ],
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                }
            ],
            "content": "He, X., and C. H. Boggs. Estimating fisheries impacts using commercial fisheries data: Simulation models and time series analysis of Hawaii's yellowfin tuna"
        },
        {
            "spans": [
                {
                    "offset": 60899,
                    "length": 96
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                }
            ],
            "content": "fisheries. For consideration for publication in Pro- ceedings of the 2nd World Fishery Congress."
        },
        {
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                {
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                }
            ],
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            ],
            "content": "Sakuma, K. M., F. B. Schwing, K. Baltz, D. Roberts, H. A. Parker, and S. Ralston. The physical oceanography off the central California coast during May-June, 1995: a summary of CTD data from pelagic juvenile rockfish surveys. For consideration for publication in NOAA Technical Memorandum NMFS."
        },
        {
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            "content": "Administrative Reports"
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            "content": "Administrative Reports are strictly for internal use only and are not to be cited or treated as publications."
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            "content": "Honolulu"
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            ],
            "content": "Hamm, D. C., N. T. S. Chan, and M. M. C. Quach. 1996. Fishery statistics of the western Pacific, Volume XI. SWFSC Admin. Rep., Honolulu, H-96-08, var. p."
        },
        {
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            ],
            "content": "Pooley, Samuel G. 1996. Economic determination of the optimal number of Northwestern Hawaiian Islands bottomfish vessels. SWFSC Admin. Rep., Honolulu, H-96-07, 21 p."
        },
        {
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                {
                    "offset": 61753,
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            ],
            "content": "La Jolla"
        },
        {
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                {
                    "offset": 61762,
                    "length": 227
                }
            ],
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                }
            ],
            "content": "Barlow, J. and S. Sexton. 1996. The effect of diving and searching behavior on the probability of detecting track-line groups, go, of long-diving whales during line-transect surveys. SWFSC Admin. Rep., La Jolla, LJ-96-14, 21 p."
        },
        {
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            ],
            "content": "Edwards, E.F. 1996. International Dolphin Conservation Act Annual Report to Congress - 1995. SWFSC Admin. Rep., La Jolla, LJ-96-08, 16 p."
        },
        {
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                {
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                }
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                }
            ],
            "content": "Gerrodette, T. and D. M. Palacios. 1996. Estimates of cetacean abundance in EEZ waters of the eastern tropi- cal Pacific. (In English and Spanish). SWFSC Admin. Rep., La Jolla, LJ-96-10, 28 p."
        },
        {
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                }
            ],
            "content": "LeBoeuf, B. J. 1996. Northern elephant seals at Año Nuevo during the breeding seasons of 1992-1996 (contract report). SWFSC Admin. Rep., La Jolla, LJ-96-12C, 8 p."
        },
        {
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                {
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                }
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            ],
            "content": "Palacios, D.M. and T. Gerrodette. 1996. Potential impact of artisanal gillnet fisheries on small cetacean popula- tions in the eastern tropical Pacific. (In English and Spanish). SWFSC Admin. Rep., La Jolla, LJ-96-11, 16 p."
        },
        {
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            "content": "Tiburon"
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            "content": "Adams, P. B., T. E. Laidig, K. R. Silberberg, M. J. Bowers, B. M. Jarvis, K. M. Sakuma, K. Baltz, and D. P. Wood- bury. 1996. Historical and current presence-absence data of coho salmon (Oncorhynchus kisutch) in the Cen- tral California Evolutionary Significant Unit. SWFSC Admin. Rep., Tiburon, T-96-01, 24 p."
        },
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            "content": "UNITED STATES DEPARTMENT OF COMMERCE NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION NATIONAL MARINE FISHERIES SERVICE SOUTHWEST FISHERIES SCIENCE CENTER 8604 LA JOLLA SHORES DRIVE P.O. BOX 271 LA JOLLA, CALIFORNIA 92038-0271 OFFICIAL BUSINESS PENALITY FOR PRIVATE USE, $300"
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