Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea
Arctic ecosystem dynamics are shifting in response to warming temperatures and sea ice loss. Such ecosystems may be monitored by examining the diet of upper trophic level species, which varies with prey availability. To assess interannual variation in the Beaufort Sea ecosystem, we examined spatial...
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ftpubmed:oai:pubmedcentral.nih.gov:7246210 2023-05-15T15:07:06+02:00 Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea Boucher, Nicole P. Derocher, Andrew E. Richardson, Evan S. 2020-03-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7246210/ http://www.ncbi.nlm.nih.gov/pubmed/32489588 https://doi.org/10.1002/ece3.6186 en eng John Wiley and Sons Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7246210/ http://www.ncbi.nlm.nih.gov/pubmed/32489588 http://dx.doi.org/10.1002/ece3.6186 © 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. CC-BY Ecol Evol Original Research Text 2020 ftpubmed https://doi.org/10.1002/ece3.6186 2020-06-07T00:38:58Z Arctic ecosystem dynamics are shifting in response to warming temperatures and sea ice loss. Such ecosystems may be monitored by examining the diet of upper trophic level species, which varies with prey availability. To assess interannual variation in the Beaufort Sea ecosystem, we examined spatial and temporal trends in ringed seal (Pusa hispida) δ(13)C and δ(15)N in claw growth layers grown from 1964 to 2011. Stable isotopes were correlated with climate indices, environmental conditions, seal population productivity, and geographic location. Sex and age did not influence stable isotopes. Enriched (13)C was linked to cyclonic circulation regimes, seal productivity, and westward sampling locations. Higher δ(15)N was linked to lower sea surface temperatures, a higher percentage of pups in the subsistence harvest, and sample locations that were eastward and further from shore. From the 1960s to 2000s, ringed seal niche width expanded, suggesting a diversification of diet due to expansion of prey and/or seal space use. Overall, trends in ringed seal stable isotopes indicate changes within the Beaufort Sea ecosystem affected by water temperatures and circulation regimes. We suggest that continued monitoring of upper trophic level species will yield insights into changing ecosystem structure with climate change. Text Arctic Beaufort Sea Climate change Pusa hispida ringed seal Sea ice PubMed Central (PMC) Arctic Ecology and Evolution 10 10 4178 4192 |
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English |
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Original Research |
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Original Research Boucher, Nicole P. Derocher, Andrew E. Richardson, Evan S. Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea |
topic_facet |
Original Research |
description |
Arctic ecosystem dynamics are shifting in response to warming temperatures and sea ice loss. Such ecosystems may be monitored by examining the diet of upper trophic level species, which varies with prey availability. To assess interannual variation in the Beaufort Sea ecosystem, we examined spatial and temporal trends in ringed seal (Pusa hispida) δ(13)C and δ(15)N in claw growth layers grown from 1964 to 2011. Stable isotopes were correlated with climate indices, environmental conditions, seal population productivity, and geographic location. Sex and age did not influence stable isotopes. Enriched (13)C was linked to cyclonic circulation regimes, seal productivity, and westward sampling locations. Higher δ(15)N was linked to lower sea surface temperatures, a higher percentage of pups in the subsistence harvest, and sample locations that were eastward and further from shore. From the 1960s to 2000s, ringed seal niche width expanded, suggesting a diversification of diet due to expansion of prey and/or seal space use. Overall, trends in ringed seal stable isotopes indicate changes within the Beaufort Sea ecosystem affected by water temperatures and circulation regimes. We suggest that continued monitoring of upper trophic level species will yield insights into changing ecosystem structure with climate change. |
format |
Text |
author |
Boucher, Nicole P. Derocher, Andrew E. Richardson, Evan S. |
author_facet |
Boucher, Nicole P. Derocher, Andrew E. Richardson, Evan S. |
author_sort |
Boucher, Nicole P. |
title |
Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea |
title_short |
Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea |
title_full |
Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea |
title_fullStr |
Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea |
title_full_unstemmed |
Spatial and temporal variability in ringed seal (Pusa hispida) stable isotopes in the Beaufort Sea |
title_sort |
spatial and temporal variability in ringed seal (pusa hispida) stable isotopes in the beaufort sea |
publisher |
John Wiley and Sons Inc. |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7246210/ http://www.ncbi.nlm.nih.gov/pubmed/32489588 https://doi.org/10.1002/ece3.6186 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Beaufort Sea Climate change Pusa hispida ringed seal Sea ice |
genre_facet |
Arctic Beaufort Sea Climate change Pusa hispida ringed seal Sea ice |
op_source |
Ecol Evol |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7246210/ http://www.ncbi.nlm.nih.gov/pubmed/32489588 http://dx.doi.org/10.1002/ece3.6186 |
op_rights |
© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1002/ece3.6186 |
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Ecology and Evolution |
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10 |
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10 |
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4178 |
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4192 |
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1766338664169734144 |