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Bioaccumulation of heavy metals by brown trout (Salmo trutta) in the Arkansas River: importance of food chain transfer

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dc.contributor.authorClements, W. H. (William H.), author
dc.contributor.authorColorado Water Resources Research Institute, publisher
dc.coverage.spatialArkansas River
dc.coverage.spatialColorado
dc.date.accessioned2007-01-03T04:19:37Z
dc.date.available2007-01-03T04:19:37Z
dc.date.issued1992
dc.descriptionDecember, 1992.
dc.description.abstractThis study examined uptake and transfer of heavy metals form benthic invertebrates to brown trout in the Arkansas River. Metals in water, aufwuchs, benthic invertebrates, and fish were measured at stations upstream and downstream from California Gulch (GC). Aufwuchs and benthic invertebrates were highly contaminated by heavy metals downstream from California Gulch. The diet of brown trout at the Arkansas River was dominated by benthic invertebrates. These accounted for 40 to 95 percent of the diet of the brown trout. Differences in prey availability between upstream and downstream resulted in the differences. Ephemeroptera comprised a greater portion of the diet of the fish collected upstream from GC, whereas metal-tolerant organisms were more common in the diet of fish from downstream. Elevated metal levels in water and invertebrates downstream resulted in increased metals in gill and gut tissue; however, metal concentrations in brown trout liver and kidney tissue were generally similar both upstream and downstream. The data suggest that fish regulated metal accumulation. The implications of these findings for the recovery of brown trout populations at the Arkansas River are discussed.
dc.description.sponsorshipGrant no. 14-08-0001-2008, Project no. 10; financed in part by the U.S. Department of the Interior, Geological Survey, through the Colorado Water Resources Research Institute.
dc.format.mediumreports
dc.identifierCOMP167.pdf
dc.identifierCCRICWRI100021CRPT
dc.identifier.urihttp://hdl.handle.net/10217/1025
dc.languageEnglish
dc.language.isoeng
dc.publisherColorado State University. Libraries
dc.relationWWDL
dc.relation.ispartofCompletion Reports
dc.relation.ispartofCompletion report (Colorado Water Resources Research Institute), no. 167
dc.rightsCopyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.
dc.subject.lcshHeavy metals -- Bioaccumulation -- Arkansas River
dc.subject.lcshHeavy metals -- Bioaccumulation -- Colorado
dc.subject.lcshFishes -- Effect of heavy metals on -- Arkansas River
dc.subject.lcshFishes -- Effect of heavy metals on -- Colorado
dc.subject.lcshBrown trout -- Effect of heavy metals on -- Arkansas River
dc.subject.lcshBrown trout -- Effect of heavy metals on -- Colorado
dc.subject.lcshFood chains (Ecology) -- Arkansas River
dc.subject.lcshFood chains (Ecology) -- Colorado
dc.titleBioaccumulation of heavy metals by brown trout (Salmo trutta) in the Arkansas River: importance of food chain transfer
dc.typeText
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Bioaccumulation of heavy metals by brown trout (Salmo trutta) in the Arkansas River: importance of food chain transfer
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