Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge
Ecological theory suggests that demographic responses by populations to environmental change vary depending on whether individuals inhabit central or peripheral regions within the species’ geographic range. Here, we tested this prediction by comparing a population of ringed seals Pusa hispida locate...
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crwiley:10.1111/ecog.04988 2024-09-30T14:39:49+00:00 Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Fisk, Aaron T. Muir, Derek C. G. Zhu, Xinhua Thiemann, Gregory W. 2020 http://dx.doi.org/10.1111/ecog.04988 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fecog.04988 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ecog.04988 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ecog.04988 en eng Wiley http://creativecommons.org/licenses/by/3.0/ Ecography volume 43, issue 10, page 1521-1535 ISSN 0906-7590 1600-0587 journal-article 2020 crwiley https://doi.org/10.1111/ecog.04988 2024-09-03T04:23:47Z Ecological theory suggests that demographic responses by populations to environmental change vary depending on whether individuals inhabit central or peripheral regions within the species’ geographic range. Here, we tested this prediction by comparing a population of ringed seals Pusa hispida located at high latitudes as part of their core range (core) with a population located at the southern extremity of their range (peripheral). First, we compared the two regions’ environmental trends in timing of sea‐ice breakup and freeze‐up, open‐water duration and the North Atlantic Oscillation (NAO). We found that the core region shifted to progressively warmer conditions in the early 1990s; whereas, in the peripheral region, the warming trend shifted in 1999 to one with no warming trend but high inter‐annual variability. Next, we examined how body condition, inferred from blubber depth, responded to temporal changes in sea‐ice and climatic variables – variables that have been shown to influence ringed seal demography. Core seals displayed minimal seasonal changes in body condition; whereas peripheral seals displayed a 20–60% amplitude seasonal change in body condition with a phase shift to earlier initiation of fat accumulation and loss. Finally, we tested for interannual differences and found that both core and peripheral seals responded similarly with decreased body condition following more positive NAO. Environmental variables influenced body condition in opposite directions between the two regions with core seals declining in body condition with later spring breakup and shorter open‐water duration, whereas peripheral seals showed opposite relationships. Seals living at the core likely benefit from an evolved match between adaptation and environmental variation resulting in dampened seasonal and interannual fluctuations in body condition. Knowledge of how different populations respond to environmental change depending on geographic location within a species range can assist in anticipating population specific ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Pusa hispida ringed seal Sea ice Wiley Online Library Ecography 43 10 1521 1535 |
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Wiley Online Library |
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crwiley |
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English |
description |
Ecological theory suggests that demographic responses by populations to environmental change vary depending on whether individuals inhabit central or peripheral regions within the species’ geographic range. Here, we tested this prediction by comparing a population of ringed seals Pusa hispida located at high latitudes as part of their core range (core) with a population located at the southern extremity of their range (peripheral). First, we compared the two regions’ environmental trends in timing of sea‐ice breakup and freeze‐up, open‐water duration and the North Atlantic Oscillation (NAO). We found that the core region shifted to progressively warmer conditions in the early 1990s; whereas, in the peripheral region, the warming trend shifted in 1999 to one with no warming trend but high inter‐annual variability. Next, we examined how body condition, inferred from blubber depth, responded to temporal changes in sea‐ice and climatic variables – variables that have been shown to influence ringed seal demography. Core seals displayed minimal seasonal changes in body condition; whereas peripheral seals displayed a 20–60% amplitude seasonal change in body condition with a phase shift to earlier initiation of fat accumulation and loss. Finally, we tested for interannual differences and found that both core and peripheral seals responded similarly with decreased body condition following more positive NAO. Environmental variables influenced body condition in opposite directions between the two regions with core seals declining in body condition with later spring breakup and shorter open‐water duration, whereas peripheral seals showed opposite relationships. Seals living at the core likely benefit from an evolved match between adaptation and environmental variation resulting in dampened seasonal and interannual fluctuations in body condition. Knowledge of how different populations respond to environmental change depending on geographic location within a species range can assist in anticipating population specific ... |
format |
Article in Journal/Newspaper |
author |
Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Fisk, Aaron T. Muir, Derek C. G. Zhu, Xinhua Thiemann, Gregory W. |
spellingShingle |
Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Fisk, Aaron T. Muir, Derek C. G. Zhu, Xinhua Thiemann, Gregory W. Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge |
author_facet |
Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Fisk, Aaron T. Muir, Derek C. G. Zhu, Xinhua Thiemann, Gregory W. |
author_sort |
Ferguson, Steven H. |
title |
Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge |
title_short |
Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge |
title_full |
Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge |
title_fullStr |
Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge |
title_full_unstemmed |
Comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge |
title_sort |
comparing temporal patterns in body condition of ringed seals living within their core geographic range with those living at the edge |
publisher |
Wiley |
publishDate |
2020 |
url |
http://dx.doi.org/10.1111/ecog.04988 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fecog.04988 https://onlinelibrary.wiley.com/doi/pdf/10.1111/ecog.04988 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/ecog.04988 |
genre |
North Atlantic North Atlantic oscillation Pusa hispida ringed seal Sea ice |
genre_facet |
North Atlantic North Atlantic oscillation Pusa hispida ringed seal Sea ice |
op_source |
Ecography volume 43, issue 10, page 1521-1535 ISSN 0906-7590 1600-0587 |
op_rights |
http://creativecommons.org/licenses/by/3.0/ |
op_doi |
https://doi.org/10.1111/ecog.04988 |
container_title |
Ecography |
container_volume |
43 |
container_issue |
10 |
container_start_page |
1521 |
op_container_end_page |
1535 |
_version_ |
1811642404510367744 |