Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada
Contaminant dynamics in arctic marine food webs may be impacted by current climate-induced food web changes including increases in transient/subarctic species. We quantified food web organochlorine transfer in the Cumberland Sound (Nunavut, Canada) arctic marine food web in the presence of transient...
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Online Access: | https://scholar.uwindsor.ca/glierpub/384 https://doi.org/10.1021/es302761p |
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ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1386 2023-06-11T04:08:40+02:00 Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada McKinney, Melissa A. McMeans, Bailey C. Tomy, Gregg T. Rosenberg, Bruno Ferguson, Steven H. Morris, Adam Muir, Derek C.G. Fisk, Aaron T. 2012-09-18T07:00:00Z https://scholar.uwindsor.ca/glierpub/384 https://doi.org/10.1021/es302761p unknown Scholarship at UWindsor https://scholar.uwindsor.ca/glierpub/384 doi:10.1021/es302761p https://doi.org/10.1021/es302761p Great Lakes Institute for Environmental Research Publications text 2012 ftunivwindsor https://doi.org/10.1021/es302761p 2023-05-06T19:10:50Z Contaminant dynamics in arctic marine food webs may be impacted by current climate-induced food web changes including increases in transient/subarctic species. We quantified food web organochlorine transfer in the Cumberland Sound (Nunavut, Canada) arctic marine food web in the presence of transient species using species-specific biomagnification factors (BMFs), trophic magnification factors (TMFs), and a multifactor model that included δ15N- derived trophic position and species habitat range (transient versus resident), and also considered δ13C-derived carbon source, thermoregulatory group, and season. Transient/subarctic species relative to residents had higher prey-to-predator BMFs of biomagnifying contaminants (1.4 to 62 for harp seal, Greenland shark, and narwhal versus 1.1 to 20 for ringed seal, arctic skate, and beluga whale, respectively). For contaminants that biomagnified in a transient-and-resident food web and a resident-only food web scenario, TMFs were higher in the former (2.3 to 10.1) versus the latter (1.7 to 4.0). Transient/subarctic species have higher tissue contaminant levels and greater BMFs likely due to higher energetic requirements associated with long-distance movements or consumption of more contaminated prey in regions outside of Cumberland Sound. These results demonstrate that, in addition to climate change-related long-range transport/deposition/revolatilization changes, increasing numbers of transient/subarctic animals may alter food web contaminant dynamics. © 2012 American Chemical Society. Text Arctic Beluga Beluga whale Beluga* Climate change Cumberland Sound Greenland Harp Seal narwhal* Nunavut ringed seal Subarctic University of Windsor, Ontario: Scholarship at UWindsor Arctic Nunavut Canada Greenland Cumberland Sound ENVELOPE(-66.014,-66.014,65.334,65.334) Environmental Science & Technology 46 18 9914 9922 |
institution |
Open Polar |
collection |
University of Windsor, Ontario: Scholarship at UWindsor |
op_collection_id |
ftunivwindsor |
language |
unknown |
description |
Contaminant dynamics in arctic marine food webs may be impacted by current climate-induced food web changes including increases in transient/subarctic species. We quantified food web organochlorine transfer in the Cumberland Sound (Nunavut, Canada) arctic marine food web in the presence of transient species using species-specific biomagnification factors (BMFs), trophic magnification factors (TMFs), and a multifactor model that included δ15N- derived trophic position and species habitat range (transient versus resident), and also considered δ13C-derived carbon source, thermoregulatory group, and season. Transient/subarctic species relative to residents had higher prey-to-predator BMFs of biomagnifying contaminants (1.4 to 62 for harp seal, Greenland shark, and narwhal versus 1.1 to 20 for ringed seal, arctic skate, and beluga whale, respectively). For contaminants that biomagnified in a transient-and-resident food web and a resident-only food web scenario, TMFs were higher in the former (2.3 to 10.1) versus the latter (1.7 to 4.0). Transient/subarctic species have higher tissue contaminant levels and greater BMFs likely due to higher energetic requirements associated with long-distance movements or consumption of more contaminated prey in regions outside of Cumberland Sound. These results demonstrate that, in addition to climate change-related long-range transport/deposition/revolatilization changes, increasing numbers of transient/subarctic animals may alter food web contaminant dynamics. © 2012 American Chemical Society. |
format |
Text |
author |
McKinney, Melissa A. McMeans, Bailey C. Tomy, Gregg T. Rosenberg, Bruno Ferguson, Steven H. Morris, Adam Muir, Derek C.G. Fisk, Aaron T. |
spellingShingle |
McKinney, Melissa A. McMeans, Bailey C. Tomy, Gregg T. Rosenberg, Bruno Ferguson, Steven H. Morris, Adam Muir, Derek C.G. Fisk, Aaron T. Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada |
author_facet |
McKinney, Melissa A. McMeans, Bailey C. Tomy, Gregg T. Rosenberg, Bruno Ferguson, Steven H. Morris, Adam Muir, Derek C.G. Fisk, Aaron T. |
author_sort |
McKinney, Melissa A. |
title |
Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada |
title_short |
Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada |
title_full |
Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada |
title_fullStr |
Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada |
title_full_unstemmed |
Trophic transfer of contaminants in a changing arctic marine food web: Cumberland sound, Nunavut, Canada |
title_sort |
trophic transfer of contaminants in a changing arctic marine food web: cumberland sound, nunavut, canada |
publisher |
Scholarship at UWindsor |
publishDate |
2012 |
url |
https://scholar.uwindsor.ca/glierpub/384 https://doi.org/10.1021/es302761p |
long_lat |
ENVELOPE(-66.014,-66.014,65.334,65.334) |
geographic |
Arctic Nunavut Canada Greenland Cumberland Sound |
geographic_facet |
Arctic Nunavut Canada Greenland Cumberland Sound |
genre |
Arctic Beluga Beluga whale Beluga* Climate change Cumberland Sound Greenland Harp Seal narwhal* Nunavut ringed seal Subarctic |
genre_facet |
Arctic Beluga Beluga whale Beluga* Climate change Cumberland Sound Greenland Harp Seal narwhal* Nunavut ringed seal Subarctic |
op_source |
Great Lakes Institute for Environmental Research Publications |
op_relation |
https://scholar.uwindsor.ca/glierpub/384 doi:10.1021/es302761p https://doi.org/10.1021/es302761p |
op_doi |
https://doi.org/10.1021/es302761p |
container_title |
Environmental Science & Technology |
container_volume |
46 |
container_issue |
18 |
container_start_page |
9914 |
op_container_end_page |
9922 |
_version_ |
1768382086891175936 |