(Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ...
The relative contribution of regional contamination versus dietary differences to geographic variation in polar bear (Ursus maritimus) contaminant levels is unknown. Dietary variation between Alaska, Canada, East Greenland, and Svalbard subpopulations was assessed by muscle nitrogen and carbon stabl...
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PANGAEA - Publishing Network for Geoscientific and Environmental Data
2011
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Online Access: | https://dx.doi.org/10.15468/fy6pvx https://www.gbif.org/dataset/b6b88eb6-b348-4c11-9198-7b72ffa19fe4 |
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ftdatacite:10.15468/fy6pvx 2023-07-23T04:17:27+02:00 (Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ... McKinney, Melissa A Letcher, Robert J Aars, Jon Born, Erik W Branigan, Marsha Dietz, Rune Evans, Thomas J Gabrielsen, Geir W Muir, Derek C G Peacock, Elizabeth Sonne, Christian 2011 https://dx.doi.org/10.15468/fy6pvx https://www.gbif.org/dataset/b6b88eb6-b348-4c11-9198-7b72ffa19fe4 en eng PANGAEA - Publishing Network for Geoscientific and Environmental Data https://dx.doi.org/10.1594/pangaea.816752 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 dataset Dataset OCCURRENCE 2011 ftdatacite https://doi.org/10.15468/fy6pvx10.1594/pangaea.816752 2023-07-03T22:12:53Z The relative contribution of regional contamination versus dietary differences to geographic variation in polar bear (Ursus maritimus) contaminant levels is unknown. Dietary variation between Alaska, Canada, East Greenland, and Svalbard subpopulations was assessed by muscle nitrogen and carbon stable isotope (d15N, d13C) and adipose fatty acid (FA) signatures relative to their main prey (ringed seals). Western and southern Hudson Bay signatures were characterized by depleted d15N and d13C, lower proportions of C20 and C22 monounsaturated FAs and higher proportions of C18 and longer chain polyunsaturated FAs. East Greenland and Svalbard signatures were reversed relative to Hudson Bay. Alaskan and Canadian Arctic signatures were intermediate. Between-subpopulation dietary differences predominated over interannual, seasonal, sex, or age variation. Among various brominated and chlorinated contaminants, diet signatures significantly explained variation in adipose levels of polybrominated diphenyl ether (PBDE) ... Dataset Arctic East Greenland Greenland Hudson Bay Svalbard Ursus maritimus Alaska DataCite Metadata Store (German National Library of Science and Technology) Arctic Canada Greenland Hudson Hudson Bay Svalbard |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
The relative contribution of regional contamination versus dietary differences to geographic variation in polar bear (Ursus maritimus) contaminant levels is unknown. Dietary variation between Alaska, Canada, East Greenland, and Svalbard subpopulations was assessed by muscle nitrogen and carbon stable isotope (d15N, d13C) and adipose fatty acid (FA) signatures relative to their main prey (ringed seals). Western and southern Hudson Bay signatures were characterized by depleted d15N and d13C, lower proportions of C20 and C22 monounsaturated FAs and higher proportions of C18 and longer chain polyunsaturated FAs. East Greenland and Svalbard signatures were reversed relative to Hudson Bay. Alaskan and Canadian Arctic signatures were intermediate. Between-subpopulation dietary differences predominated over interannual, seasonal, sex, or age variation. Among various brominated and chlorinated contaminants, diet signatures significantly explained variation in adipose levels of polybrominated diphenyl ether (PBDE) ... |
format |
Dataset |
author |
McKinney, Melissa A Letcher, Robert J Aars, Jon Born, Erik W Branigan, Marsha Dietz, Rune Evans, Thomas J Gabrielsen, Geir W Muir, Derek C G Peacock, Elizabeth Sonne, Christian |
spellingShingle |
McKinney, Melissa A Letcher, Robert J Aars, Jon Born, Erik W Branigan, Marsha Dietz, Rune Evans, Thomas J Gabrielsen, Geir W Muir, Derek C G Peacock, Elizabeth Sonne, Christian (Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ... |
author_facet |
McKinney, Melissa A Letcher, Robert J Aars, Jon Born, Erik W Branigan, Marsha Dietz, Rune Evans, Thomas J Gabrielsen, Geir W Muir, Derek C G Peacock, Elizabeth Sonne, Christian |
author_sort |
McKinney, Melissa A |
title |
(Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ... |
title_short |
(Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ... |
title_full |
(Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ... |
title_fullStr |
(Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ... |
title_full_unstemmed |
(Tables S1,2) Stable isotopes in muscle tissue of polar bears (Ursus maritimus) from various regions of the Arctic ... |
title_sort |
(tables s1,2) stable isotopes in muscle tissue of polar bears (ursus maritimus) from various regions of the arctic ... |
publisher |
PANGAEA - Publishing Network for Geoscientific and Environmental Data |
publishDate |
2011 |
url |
https://dx.doi.org/10.15468/fy6pvx https://www.gbif.org/dataset/b6b88eb6-b348-4c11-9198-7b72ffa19fe4 |
geographic |
Arctic Canada Greenland Hudson Hudson Bay Svalbard |
geographic_facet |
Arctic Canada Greenland Hudson Hudson Bay Svalbard |
genre |
Arctic East Greenland Greenland Hudson Bay Svalbard Ursus maritimus Alaska |
genre_facet |
Arctic East Greenland Greenland Hudson Bay Svalbard Ursus maritimus Alaska |
op_relation |
https://dx.doi.org/10.1594/pangaea.816752 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.15468/fy6pvx10.1594/pangaea.816752 |
_version_ |
1772179205553913856 |