{"Bibliographic":{"Title":"Benthic infauna and sediment characteristics in the Columbia River near Westport, Oregon, August 1989","Authors":"","Publication date":"1990","Publisher":""},"Administrative":{"Date created":"08-16-2023","Language":"English","Rights":"CC 0","Size":"0000015954"},"Pages":["SH153\n.Un512\nBenthic Infauna and Sediment Characteristics\nin the Columbia River\nnear Westport, Oregon,\nAugust 1989\nLibrary\nNorthwest\n&\nNationAlaska\nFisherios\nFishericenter\nby\nGeorge T. McCabe, Jr.\nand\nSusan A. Hinton\nJune 1990\nCHASTAL\nZONE\nAND\nSTUDIES","NWFSCO46\nBENTHIC INFAUNA AND SEDIMENT CHARACTERISTICS IN THE\nCOLUMBIA RIVER NEAR WESTPORT, OREGON, AUGUST 1989\nSH\n153\nUn512\nby\nGeorge T. McCabe, Jr.\nand\nSusan A. Hinton\nFinal Report\nfunded by\nU.S. Army Corps of Engineers\nPortland District\nP.O. Box 2946\nPortland, Oregon 97208\n(Project Number E86890154)\nand\nCoastal Zone and Estuarine Studies Division\nNorthwest Fisheries Center\nNational Marine Fisheries Service\nNational Oceanic and Atmospheric Administration\n2725 Montlake Boulevard East\nSeattle, Washington 98112\nJune 1990","CONTENTS\nPage\n1\nINTRODUCTION\n1\nMETHODS\n3\nRESULTS AND DISCUSSION\n10\nLITERATURE CITED\n11\nAPPENDIX","INTRODUCTION\nIn August 1989, the U.S. Army Corps of Engineers (COE), Portland District, and\nthe National Marine Fisheries Service (NMFS), in a cooperative investigation, sampled\nthe Columbia River benthos in the vicinity of the route followed by the Cathlamet\nFerry. The Cathlamet Ferry is a small ferry that runs between a dock on Puget\nIsland, Washington, which is located at River Mile (RM) 43.2 on the Columbia River,\nand Westport, Oregon. The objectives of the study were to determine the species\ncompositions and densities of benthic invertebrates in areas that may be dredged. This\nreport summarizes the results of this investigation.\nMETHODS\nOn 31 August 1989, benthic invertebrate and sediment samples were collected at\nfive stations in the vicinity of the route followed by the Cathlamet Ferry (Figure 1;\nAppendix Table 1). Five benthic invertebrate samples and one sediment sample were\ncollected at each station using a 0.1 m² Van Veen grab sampler (Word 1976). When\npractical, each benthic invertebrate sample was sieved through a 0.5-mm screen and\nthe residue preserved in a buffered formaldehyde solution (>4%) containing rose bengal,\nan organic stain. If it appeared that most of the sample would not wash through the\nsieve, then the entire sample was preserved and sieved at a later time. Each benthic\ninvertebrate sample was sorted and the invertebrates were identified to the lowest\npractical taxonomic level and counted. Sediment samples were analyzed by the COE\n(North Pacific Division Materials Laboratory, Troutdale, Oregon) for sediment grain size\nand percent organic carbon (total volatile solids).\nData were analyzed by station. Information calculated for each station included\nthe number of taxa; total number, frequency of occurrence, and mean number/m² and\nstandard deviation (SD) for each taxon; mean number of invertebrates/sample and SD;","2\nWashington\nN\nPuget Island\nFerry dock\n5\nColumbia River\n4\n3\n2\nJohnson\nStatute miles\no\n1/4\n1/2\nslough\n1\nOregon\nFerry dock\nWestport\nFigure 1.--Locations of the five benthic sampling stations between Westport,\nOregon, and Puget Island, Washington.","3\nand total number of invertebrates/m2 and SD. Also, four community structure indices\nwere calculated for each station--Shannon-Wiener Diversity Index (H') (Krebs 1978),\nSimpson Diversity Value (SDV) (Simpson 1949), Species Richness (SR) (Margalef 1958),\nand Evenness (J') (Pielou 1966):\nS\nH' = = Pi log,Pi -\ni=1\nSDV =1-E Pi2\ni=1\nSR = (s-1)/In (n)\nJ' = H'/log2s.\nwhere Pi = Xa/n (Xa is the number of individuals of a particular species in a sample\nand n is the total number of individuals in a sample) and S = number of species.\nRESULTS AND DISCUSSION\nDensities of benthic organisms at the five sampling stations ranged from 1,529\n(Station 1) to 2,871 organisms/m² (Station 3) (Tables 1-5). Essentially all organisms\ncollected were benthic invertebrates, with the exception of six lampreys (Lampetra spp.)\ncollected at Stations 3 and 4. The tube-dwelling amphipod Corophium salmonis was by\nfar the dominant benthic invertebrate collected at all five stations--C. salmonis densities\nranged from 1,264 (Station 1) to 2,461/m2 (Station 3) with a mean of 1,818/m².\nCorophium salmonis is an important food for fishes in the Columbia River estuary\n(McCabe et al. 1983; Bottom et al. 1984). Densities of C. salmonis at the Westport\nsampling stations were lower than densities reported by Emmett et al. (1986) at four\nsampling stations in Cathlamet Bay of the Columbia River estuary, where C. salmonis","4\nTable 1.-Summary of benthic invertebrate collections at Station 1 near Westport, Oregon,\n31 August 1989.\nStandard\nTotal\nFrequency of\nMean\nTaxon\nnumber\ndeviation\nnumber\noccurrence\n/m²\n/m²\n(%)\n4.7\n20\n2.1\nNeanthes limnicola\n1\n216.3\n141.0\n103\n100\nOligochaeta\n18.8\n60\n18.9\nCorbicula manilensis\n9\n5.8\nNeomysis mercedis\n2\n40\n4.2\n6.3\n14.0\n3\n20\nCorophium spp.\n804.9\n100\n1,264.2\nCorophium salmonis\n602\n12.6\n17.2\nHeleidae larvae\n6\n60\n2.1\n4.7\n1\n20\nOdonata\n20\n2.1\n4.7\nArachnida\n1\nNumber of taxa: 9\nStandard deviation (SD): 69.8\nMean number/sample: 145.6\nMean number/m²: 1,528.8\nSD/m²: 732.4\nH' = 0.86\nSDV = 0.30\nSR = 1.21\nJ' = 0.27","5\nTable 2.-Summary of benthic invertebrate collections at Station 2 near Westport, Oregon,\n31 August 1989.\nStandard\nTotal\nFrequency of\nMean\nTaxon\nnumber\ndeviation\nnumber\noccurrence\n/m²\n/m²\n(%)\n22.8\nNeanthes limnicola\n31\n100\n65.1\n304.5\n243.4\nOligochaeta\n145\n100\n100\n25.2\n9.4\nCorbicula manilensis\n12\n15\n80\n31.5\n42.0\nOstracoda\n2,412.9\n715.0\nCorophium salmonis\n1,149\n100\n12.0\n80\n14.7\nChironomidae larvae\n7\n5.8\n2\n40\n4.2\nEphemeroptera\nNumber of taxa: 7\nStandard deviation (SD): 55.0\nMean number/sample: 272.2\nMean number/m²: 2,858.1\nSD/m²: 577.6\nSR = 0.83\nJ' = 0.31\nH' = 0.86\nSDV = 0.28","6\nTable 3.-Summary of benthic invertebrate (and Lampetra spp.) collections at Station 3\nnear Westport, Oregon, 31 August 1989.\nStandard\nFrequency of\nMean\nTotal\nTaxon\ndeviation\nnumber\nnumber\noccurrence\n/m²\n/m²\n(%)\n4.7\n2.1\n20\n1\nNeanthes limnicola\n373.8\n326.4\n100\n178\nOligochaeta\n10.5\n7.4\n80\n5\nCorbicula manilensis\n5.8\n4.2\n40\n2\nNeomysis mercedis\n2,461.2\n847.0\n100\n1,172\nCorophium salmonis\n4.2\n5.8\n2\n40\nChironomidae larvae\n4.2\n9.4\n20\n2\nChironomidae pupae\n18.2\n5\n40\n10.5\nLampetra spp.\nNumber of taxa: 8\nStandard deviation (SD): 54.1\nMean number/sample: 273.4\nSD/m²: 568.2\nMean number/m²: 2,870.7\nJ' = 0.23\nSR = 0.97\nSDV = 0.25\nH' = 0.68","7\nTable 4.--Summary of benthic invertebrate (and Lampetra spp.) collections at Station 4\nnear Westport, Oregon, 31 August 1989.\nStandard\nMean\nTotal\nFrequency of\nTaxon\nnumber\ndeviation\nnumber\noccurrence\n/m²\n/m²\n(%)\n4.7\n1\n20\n2.1\nNematomorpha\n2.1\n4.7\nNeanthes limnicola\n1\n20\n188.5\n137\n100\n287.7\nOligochaeta\n104.7\nCorbicula manilensis\n45\n100\n94.5\n2.1\n4.7\nNeomysis mercedis\n1\n20\n309.8\n609\n100\n1,278.9\nCorophium salmonis\n2.1\n4.7\n1\n20\nHeleidae larvae\n2.1\n4.7\n1\n20\nUnidentified insect\n1\n20\n2.1\n4.7\nLampetra spp.\nNumber of taxa: 9\nStandard deviation (SD): 49.0\nMean number/sample: 159.4\nSD/m²: 514.4\nMean 1,673.7\nSDV = 0.38\nSR = 1.20\nJ' = 0.33\nH' = 1.04","8\nTable 5.--Summary of benthic invertebrate collections at Station 5 near Westport, Oregon,\n31 August 1989.\nStandard\nTotal\nFrequency of\nMean\nTaxon\nnumber\ndeviation\nnumber\noccurrence\n/m²\n/m²\n(%)\n16.8\n17.6\n8\n60\nOligochaeta\n26.4\nCorbicula manilensis\n23\n100\n48.3\n29.4\n46.0\n14\n40\nCorophium spp.\n1,671.6\n578.0\nCorophium salmonis\n796\n100\n4.2\n5.8\nDiptera adult\n2\n40\n60\n8.4\n8.8\nChironomidae larvae\n4\n40.9\n24\n80\n50.4\nHeleidae larvae\nNumber of taxa: 7\nStandard deviation (SD): 61.1\nMean number/sample: 174.2\nSD/m²: 641.5\nMean number/m²: 1,829.1\nH' = 0.61 SDV = 0.16 SR = 0.89\nJ' = 0.22","9\ndensities ranged from 7,470 to 35,890/m2 (mean = 20,478/m² on 29 August 1984.\nDensities of C. salmonis at six stations near Woody Island in the Columbia River\nestuary (RM 28) ranged from 529 to 5,424/m2 (mean = 2,544/m² on 12 September 1988\n(McCabe et al. 1989). In channel areas of the Columbia River near Kalama,\nWashington (RMs 75 and 79, 13 September 1988), C. salmonis densities at 10 stations\nwere much lower (mean = 107/m², range = 11 to 433/m² (McCabe et al. 1989) than\ndensities at the Westport sampling stations.\nThe substrate at four of the sampling sites consisted primarily of sand; however, at\nStation 2, silt/clay was the most important material (Appendix Table 2). Organic\ncontent at all stations was less than 3.5%.\nResults from this one survey do not adequately describe the benthic invertebrate\ncommunity in shallow water between Westport, Oregon, and Puget Island, Washington.\nTo adequately describe the benthic invertebrate community in this area, it would be\nnecessary to sample seasonally (four seasons) for at least 2 years.\nThis report does not constitute NMFS's formal comment under the Fish and\nWildlife Coordination Act or the National Environmental Policy Act.","10\nLITERATURE CITED\nBottom, D. L., K. K. Jones, and M. J. Herring.\n1984. Fishes of the Columbia River estuary. Final Report on the Fish Work Unit\nof the Columbia River Estuary Data Development Program. Oregon Dept. Fish\nWildl., Portland, OR. 113 p. + Appendixes.\nEmmett, R. L., G. T. McCabe, Jr., T. C. Coley, R. J. McConnell, and W. D. Muir.\n1986. Benthic sampling in Cathlamet Bay, Oregon--1984. Report to U.S. Army\nCorps of Engineers, Contract DACW57-84-F-0348, 11 p. + Appendixes. (Available\nfrom Northwest Fisheries enter, 2725 Montlake Blvd. E., Seattle, WA\n98112-2097.)\nKrebs, C. J.\n1978. Ecology: the experimental analysis of distribution and abundance. Harper\nand Row, New York, NY. 678 p.\nMargalef, R.\n1958. Information theory in ecology. Gen. Syst. 3:36-71.\nMcCabe, G. T., Jr., S. A. Hinton, and R. J. McConnell.\n1989. Report D. Pages 167-207 in A. A. Nigro (editor). Status and habitat\nrequirements of white sturgeon populations in the Columbia River downstream\nfrom McNary Dam. Report to the Bonneville Power Administration, Project\n86-50. (Available from Northwest Fisheries Center, 2725 Montlake Blvd. E.,\nSeattle, WA 98112-2097.)\nMcCabe, G. T., Jr., W. D. Muir, R. L. Emmett, and J. T. Durkin.\n1983. Interrelationships between juvenile salmonids and nonsalmonid fish in the\nColumbia River estuary. Fish. Bull., U.S. 81:815-826.\nPielou, E. L.\n1966. The measurement of diversity in different types of biological collections.\nJ. Theor. Biol. 13:131-144.\nSimpson, E. H.\n1949. Measurement of diversity. Nature 163:688.\nWord, J. Q.\n1976. An evaluation of benthic invertebrate sampling devices for investigating\nfeeding habits of fish. Pages 43-55 in C. A. Simenstad and S. J. Lipovsky,\neditors. Fish food habits studies, 1st Pacific Northwest Technical Workshop.\nWashington Sea Grant WSG-WO 77-2, University of Washington, Seattle, WA.","11\nAPPENDIX\nData Tables","12\nAppendix Table 1.--Depths, sampling times, and geographic locations of the five\nbenthic sampling stations between Westport, Oregon, and\nPuget Island, Washington. All sampling was done on\n31 August 1989.\nGeographic location (lat. and long.)\nDepth (m)\nTime (h)\nStation\n46° 08' 13\"N. 123° 22' 37\"W.\n2.7\n1000\n1\n46° 08' 40\"N. 123° 23' 04\"W.\n5.8\n1040\n2\n123° 23' 05 W.\n46° 08' 46\"N.\n1.8\n1232\n3\n46° 08' 50\"N. 123° 23' 03\"W.\n1.2\n1301\n4\n46° 09' 13\"N. 123° 22' 41\"W.\n2.7\n1330\n5","13\nAppendix Table 2. Results of physical analyses of sediment samples (by station) collected near Westport, Oregon, 31 August 1989.\nSystem Columbia River\nDate : 31 Aug 1989\nSystem : Columbia River\nDate : 31 Aug 1989\nDepth 5.8 n\nProject: Westport, OR\nDepth 2.7 m\nProject: Westport, OR\nStation: 1\nMethod: 0.1 m2 Van Veen\nStation: 2\nMethod: 0.1 m2 Van Veen\nU.S. Sieve\nPercent Percent\nPercent by size\nU.S. Sieve\nPercent Percent Percent by size\nSize\nPan I\nPhi\nfiner retained\nclassification\nSize III\nPan I\nPhi\nfiner retained\nclassification\n64 III\n2-1/2 in\n-6\n100.0\n0.0\n0.0 Rubble\n64 In\n2-1/2 in\n-6\n100.0\n0.0\n0.0 % Rubble\n32 III\n1-1/4 in\n-5\n100.0\n0.0\n0.0 Coarse gravel\n1-1/4 in\n32 III\n-5\n100.0\n0.0\n0.0 Coarse gravel\n16 in\n5/8 in\n-\n98.8\n1.2\n16 III\n5/8 in\n-4\n:\n100.0\n0.0\n8 HM\n5/16 in\n-3\n97.2\n1.6\n2.8 % Medium gravel\n5/16 in\n8 IIII\n-3\n:\n100.0\n0.0\n0.0 % Medium gravel\n& III\nNo.\n5\n-2\n94.4\n2.8\n4 mm\nNo.\n5\n-2\n100.0\n0.0\n2 IIII\n10\n-1\n91.1\n3.3\n6.1 % Fine gravel\n2 mm\n10 -1\n100.0\n0.0\n0.0 % Fine gravel\n1\n18\n0\n89.8\n1.3\n1 m\n18 0\n100.0\n0.0\n0.5\n35\n1\n82.8\n7.0\n8.3 % Coarse sand\n0.5 HII\n35\n1\n100.0\n0.0\n0.0 % Coarse sand\n0.25 m\n60\n2\n44.0\n38.8\n38.8 & Medium sand\n0.25 TM\n60\n2\n99.8\n0.2\n0.2 % Medium sand\n0.125 IN\n120\n3\n21.5\n22.5\n0.125 III\n120\n3\n97.1\n2.7\n0.0625 III\n230\n4\n13.2\n8.3\n30.8 % Fine sand\n0.0625 on\n230\n4\n61.9\n35.2\n37.9 f Fine sand\n<.0625 III\n61.9 % Silt/clay\n<230\n13.2\n13.2 % Silt/clay\n<.0625 IIII\n<230\n61.9\nGravel =\n8.9\n3.3 % Organics\nGravel =\n0.0 f\n2.6 % Organics\nSand =\n77.9\nSand =\n38.1 q\nFines =\n13.2\nFines =\n61.9 %\nSystem : Columbia River\nDate : 31 Aug 1989\nSystem : Columbia River\nDate : 31 Aug 1989\nProject: Westport, OR\nDepth\n1.8\nProject: Westport, OR\nDepth : 1.2 n\nm\nStation: 3\nMethod: 0.1 m2 Van Veen\nStation: 4\nMethod: 0.1 n2 Van Veen\n..\nU.S. Sieve\nPercent Percent Percent by size\nSieve\nPercent Percent Percent by size\nSize HM\nPan I\nPhi\nfiner retained classification\nSize m\nPan I\nPhi\nfiner retained\nclassification\n64 IIII\n2-1/2 in\n-6\n100.0\n0.0\n0.0 Rubble\n64 IIIII\n2-1/2 in\n-6\n100.0\n0.0\n0.0 Rubble\n32 III\n1-1/4 in\n-5\n100.0\n0.0\n0.0 Coarse gravel\n32 I'm\n1-1/4 in\n-5\n100.0\n0.0\n0.0 Coarse gravel\n16 IIII\n5/8 in\n-4\n100.0\n0.0\n16 IIII\n5/8 in\n-4\n:\n100.0\n0.0\n8 III\n5/16 in\n-3\n100.0\n0.0\n0.0 % Medium gravel\n8 m\n5/16 in\n-3\n:\n100.0\n0.0\n0.0 Medium gravel\n4 HM\nNo.\n5\n-2\n100.0\n0.0\n4 IIII\nNo.\n5\n-2\n100.0\n0.0\n2 IN\n10\n-1\n100.0\n0.0\n0.0 % Fine gravel\n2 IIII\n10\n-1\n100.0\n0.0\n0.0 % Fine gravel\n1 III\n18\n0\n100.0\n0.0\n1 m\n18\n0\n100.0\n0.0\n0.5 IIII\n35\n1\n99.9\n0.1\n0.1 f Coarse sand\n0.5 III\n35\n1\n99.8\n0.2\n0.2 % Coarse sand\n0.25 III\n60 2\n99.4\n0.5\n0.5 % Medium sand\n0.25 III\n60\n2\n99.1\n0.7\n0.7 % Medium sand\n0.125 III\n120\n3\n88.2\n11.2\n0.125 HM\n120\n3\n77.8\n21.3\n0.0625 III\n230\n4\n13.8\n74.4\n85.6 % Fine sand\n0.0625 IIII\n230\n4\n10.8\n67.0\n88.3 % Fine sand\n<.0625 m\n<230\n13.8\n13.8 % Silt/clay\n10.8 % Silt/clay\n<.0625 IIII\n<230\n10.8\nGravel =\n0.0 %\n1.1 % Organics\nGravel =\n0.0 %\n0.6 % Organics\nSand =\n86.2\nSand =\n89.2 %\nFines =\n13.8\nFines =\n10.8","14\nAppendix Table 2. .--Continued.\nSystem : Columbia River\nDate : 31 Aug 1989\nProject: Westport, OR\nDepth : 2.7 n\nStation: 5\nMethod: 0.1 m2 Van Veen\nJ.S.Sieve\n:\nPercent Percent Percent by size\nSize III\nPan #\nPhi\nfiner\nretained\nclassification\n64 HII\n2-1/2 in\n-6\n:\n100.0\n0.0 % Rubble\n0.0\n32 11 1-1/4 in -5\n:\n100.0\n0.0\n0.0 % Coarse gravel\n16 IN\n5/8 in\n-4\n:\n100.0\n0.0\n8 IN 5/16 in\n-3\n:\n100.0\n0.0\n0.0 % Medium gravel\n4 III\nNo.\n5\n-2\n: 100.0\n0.0\n0.2 f Fine gravel\n2 III\n10\n-1\n:\n99.8\n0.2\n1 III\n18\n0\n:\n98.6\n1.2\n0.5 III\n35\n1\n:\n86.7\n11.9\n13.1 % Coarse sand\n0.25\n60\n2\n:\n23.9\n62.8\n62.8 f Medium sand\n0.125 IN\n120\n3\n:\n1.5\n22.4\n0.0625 In\n230\n4\n:\n0.3\n1.2\n23.6 % Fine sand\n<.0625\n<230\n0.3\n0.3 f Silt/clay\nGravel =\n0.2 %\n0.6 % Organics\nSand =\n99.5 %\nFines =\n0.3 %"]}