Why Dont Great Lakes Fish Reflect Environmental Concentrations of Organic Contaminants? An Analysis of Between-Lake Variability in the Ecological Partitioning of PCBS and DDT
Identifieur interne : 001541 ( Main/Exploration ); précédent : 001540; suivant : 001542Why Dont Great Lakes Fish Reflect Environmental Concentrations of Organic Contaminants? An Analysis of Between-Lake Variability in the Ecological Partitioning of PCBS and DDT
Auteurs : David J. Rowan [Canada] ; Joseph B. Rasmussen [Canada]Source :
- Journal of Great Lakes Research [ 0380-1330 ] ; 1992.
English descriptors
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Abstract
We have reviewed the literature on PCBs and DDT in the Great Lakes ecosystem, in an attempt to explain between-basin and between-species variation in fish contamination. Empirical models were developed, using log-linear multiple regressions, to link tissue contaminant concentrations to environmental levels (water and sediments) as well as basin-specific ecological attributes. Concentrations of PCBs and DDT in sediment and water can explain between-basin variability in fish contaminant levels only when basin-specific ecological attributes are taken into account. The important factors that appear to determine the ecological partitioning of persistent organic contaminants are fish lipid content, trophic level of the fish in question, and the trophic structure of the food chain. Multiple regressions of these variables explain 59% (DDT) to 72% (PCBs) of the variation in contaminant concentrations of 25 species of Great Lakes fish.
Url:
DOI: 10.1016/S0380-1330(92)71332-X
Affiliations:
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Rasmussen</name><affiliation wicri:level="4"><orgName type="university">Université McGill</orgName><country>Canada</country><placeName><settlement type="city">Montréal</settlement><region type="state">Québec</region></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Great Lakes Research</title><title level="j" type="abbrev">JGLR</title><idno type="ISSN">0380-1330</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992">1992</date><biblScope unit="volume">18</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="724">724</biblScope><biblScope unit="page" to="741">741</biblScope></imprint><idno type="ISSN">0380-1330</idno></series><idno type="istex">291D66CDBED3572EA33AAA8321DFD3D1D2BD6803</idno><idno type="DOI">10.1016/S0380-1330(92)71332-X</idno><idno type="PII">S0380-1330(92)71332-X</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0380-1330</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biomagnification</term><term>DDT</term><term>Great Lakes</term><term>PCB</term><term>bioaccumulation</term><term>fish</term><term>fish yield</term><term>food chain</term><term>lipid</term><term>primary production</term><term>trophic efficiency</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We have reviewed the literature on PCBs and DDT in the Great Lakes ecosystem, in an attempt to explain between-basin and between-species variation in fish contamination. Empirical models were developed, using log-linear multiple regressions, to link tissue contaminant concentrations to environmental levels (water and sediments) as well as basin-specific ecological attributes. Concentrations of PCBs and DDT in sediment and water can explain between-basin variability in fish contaminant levels only when basin-specific ecological attributes are taken into account. The important factors that appear to determine the ecological partitioning of persistent organic contaminants are fish lipid content, trophic level of the fish in question, and the trophic structure of the food chain. Multiple regressions of these variables explain 59% (DDT) to 72% (PCBs) of the variation in contaminant concentrations of 25 species of Great Lakes fish.</div></front></TEI><affiliations><list><country><li>Canada</li></country><region><li>Québec</li></region><settlement><li>Montréal</li></settlement><orgName><li>Université McGill</li></orgName></list><tree><country name="Canada"><region name="Québec"><name sortKey="Rowan, David J" sort="Rowan, David J" uniqKey="Rowan D" first="David J." last="Rowan">David J. Rowan</name></region><name sortKey="Rasmussen, Joseph B" sort="Rasmussen, Joseph B" uniqKey="Rasmussen J" first="Joseph B." last="Rasmussen">Joseph B. Rasmussen</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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