Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates
Organochlorine contaminants (OCs) and stable isotopes of carbon (δ13C) and nitrogen (δ15N) were determined in 7 benthic and 7 pelagic marine invertebrate species from the North American Arctic to identify factors influencing OC concentrations. Values of δ 13C separated benthic (enriched in 13C) from...
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ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1442 2023-06-11T04:08:31+02:00 Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates Fisk, Aaron T. Hoekstra, Paul F. Gagnon, Jean Marc Duffe, Jason Norstrom, Ross J. Hobson, Keith A. Kwan, Michael Muir, Derek C.G. 2003-11-07T08:00:00Z https://scholar.uwindsor.ca/glierpub/440 https://doi.org/10.3354/meps262201 unknown Scholarship at UWindsor https://scholar.uwindsor.ca/glierpub/440 doi:10.3354/meps262201 https://doi.org/10.3354/meps262201 Great Lakes Institute for Environmental Research Publications Benthic Carbon-13 Nitrogen-15 Pelagic Stable isotopes Zooplankton text 2003 ftunivwindsor https://doi.org/10.3354/meps262201 2023-05-06T19:10:57Z Organochlorine contaminants (OCs) and stable isotopes of carbon (δ13C) and nitrogen (δ15N) were determined in 7 benthic and 7 pelagic marine invertebrate species from the North American Arctic to identify factors influencing OC concentrations. Values of δ 13C separated benthic (enriched in 13C) from pelagic species and δ15N values gave a logical approximation of trophic level (TL). With few exceptions, OC concentrations in invertebrates were low (most were <5 ng g-1 wet wt) relative to the same or similar species in temperate waters and in the range expected for lower TL Arctic organisms. Polychlorinated biphenyls (PCBs) were the predominant OC group and lower chlorinated PCB congeners and hexachlorocyclohexane (HCH) isomers were the most common individual OCs in most species. Relatively higher levels of PCBs and high proportions of highly chlorinated PCB congeners were found in a small number of the pelecypod samples (Mytilus edulis and Mya truncata), suggesting that local harbors and communities can be point sources of PCBs in the Arctic. The OC concentrations (wet wt) varied by up to 2 orders of magnitude among species and were more variable among the benthic invertebrates. Lipid content, δ13C and δ15N were significant variables related to OC concentration, but differences among species remained after accounting for these variables. Scavenging, high TL, high lipid content and local point sources can all contribute to higher OC concentrations in Arctic marine invertebrates. Text Arctic Zooplankton University of Windsor, Ontario: Scholarship at UWindsor Arctic Marine Ecology Progress Series 262 201 214 |
institution |
Open Polar |
collection |
University of Windsor, Ontario: Scholarship at UWindsor |
op_collection_id |
ftunivwindsor |
language |
unknown |
topic |
Benthic Carbon-13 Nitrogen-15 Pelagic Stable isotopes Zooplankton |
spellingShingle |
Benthic Carbon-13 Nitrogen-15 Pelagic Stable isotopes Zooplankton Fisk, Aaron T. Hoekstra, Paul F. Gagnon, Jean Marc Duffe, Jason Norstrom, Ross J. Hobson, Keith A. Kwan, Michael Muir, Derek C.G. Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates |
topic_facet |
Benthic Carbon-13 Nitrogen-15 Pelagic Stable isotopes Zooplankton |
description |
Organochlorine contaminants (OCs) and stable isotopes of carbon (δ13C) and nitrogen (δ15N) were determined in 7 benthic and 7 pelagic marine invertebrate species from the North American Arctic to identify factors influencing OC concentrations. Values of δ 13C separated benthic (enriched in 13C) from pelagic species and δ15N values gave a logical approximation of trophic level (TL). With few exceptions, OC concentrations in invertebrates were low (most were <5 ng g-1 wet wt) relative to the same or similar species in temperate waters and in the range expected for lower TL Arctic organisms. Polychlorinated biphenyls (PCBs) were the predominant OC group and lower chlorinated PCB congeners and hexachlorocyclohexane (HCH) isomers were the most common individual OCs in most species. Relatively higher levels of PCBs and high proportions of highly chlorinated PCB congeners were found in a small number of the pelecypod samples (Mytilus edulis and Mya truncata), suggesting that local harbors and communities can be point sources of PCBs in the Arctic. The OC concentrations (wet wt) varied by up to 2 orders of magnitude among species and were more variable among the benthic invertebrates. Lipid content, δ13C and δ15N were significant variables related to OC concentration, but differences among species remained after accounting for these variables. Scavenging, high TL, high lipid content and local point sources can all contribute to higher OC concentrations in Arctic marine invertebrates. |
format |
Text |
author |
Fisk, Aaron T. Hoekstra, Paul F. Gagnon, Jean Marc Duffe, Jason Norstrom, Ross J. Hobson, Keith A. Kwan, Michael Muir, Derek C.G. |
author_facet |
Fisk, Aaron T. Hoekstra, Paul F. Gagnon, Jean Marc Duffe, Jason Norstrom, Ross J. Hobson, Keith A. Kwan, Michael Muir, Derek C.G. |
author_sort |
Fisk, Aaron T. |
title |
Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates |
title_short |
Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates |
title_full |
Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates |
title_fullStr |
Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates |
title_full_unstemmed |
Influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in Arctic marine invertebrates |
title_sort |
influence of habitat, trophic ecology and lipids on, and spatial trends of, organochlorine contaminants in arctic marine invertebrates |
publisher |
Scholarship at UWindsor |
publishDate |
2003 |
url |
https://scholar.uwindsor.ca/glierpub/440 https://doi.org/10.3354/meps262201 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Zooplankton |
genre_facet |
Arctic Zooplankton |
op_source |
Great Lakes Institute for Environmental Research Publications |
op_relation |
https://scholar.uwindsor.ca/glierpub/440 doi:10.3354/meps262201 https://doi.org/10.3354/meps262201 |
op_doi |
https://doi.org/10.3354/meps262201 |
container_title |
Marine Ecology Progress Series |
container_volume |
262 |
container_start_page |
201 |
op_container_end_page |
214 |
_version_ |
1768381811733299200 |