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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Scholarship at UWindsor
2020
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Online Access: | https://scholar.uwindsor.ca/glierpub/281 https://doi.org/10.1111/ecog.04988 https://scholar.uwindsor.ca/context/glierpub/article/1283/viewcontent/Ecography___2020___Ferguson___Comparing_temporal_patterns_in_body_condition_of_ringed_seals_living_within_their_core.pdf |
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ftunivwindsor:oai:scholar.uwindsor.ca:glierpub-1283 2023-06-11T04:15:00+02:00 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. 2020-10-01T07:00:00Z application/pdf https://scholar.uwindsor.ca/glierpub/281 https://doi.org/10.1111/ecog.04988 https://scholar.uwindsor.ca/context/glierpub/article/1283/viewcontent/Ecography___2020___Ferguson___Comparing_temporal_patterns_in_body_condition_of_ringed_seals_living_within_their_core.pdf unknown Scholarship at UWindsor https://scholar.uwindsor.ca/glierpub/281 doi:10.1111/ecog.04988 https://scholar.uwindsor.ca/context/glierpub/article/1283/viewcontent/Ecography___2020___Ferguson___Comparing_temporal_patterns_in_body_condition_of_ringed_seals_living_within_their_core.pdf http://creativecommons.org/licenses/by/4.0/ Great Lakes Institute for Environmental Research Publications blubber depth Nunavut Canada Pusa hispida sea ice sine wave spring breakup Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology text 2020 ftunivwindsor https://doi.org/10.1111/ecog.04988 2023-05-06T19:10:44Z 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 ... Text North Atlantic North Atlantic oscillation Nunavut Pusa hispida ringed seal Sea ice University of Windsor, Ontario: Scholarship at UWindsor Canada Nunavut Ecography 43 10 1521 1535 |
institution |
Open Polar |
collection |
University of Windsor, Ontario: Scholarship at UWindsor |
op_collection_id |
ftunivwindsor |
language |
unknown |
topic |
blubber depth Nunavut Canada Pusa hispida sea ice sine wave spring breakup Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology |
spellingShingle |
blubber depth Nunavut Canada Pusa hispida sea ice sine wave spring breakup Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology 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 |
topic_facet |
blubber depth Nunavut Canada Pusa hispida sea ice sine wave spring breakup Biochemistry Biophysics and Structural Biology Biodiversity Biology Life Sciences Marine Biology |
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 |
Text |
author |
Ferguson, Steven H. Yurkowski, David J. Young, Brent G. Fisk, Aaron T. Muir, Derek C.G. Zhu, Xinhua Thiemann, Gregory W. |
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 |
Scholarship at UWindsor |
publishDate |
2020 |
url |
https://scholar.uwindsor.ca/glierpub/281 https://doi.org/10.1111/ecog.04988 https://scholar.uwindsor.ca/context/glierpub/article/1283/viewcontent/Ecography___2020___Ferguson___Comparing_temporal_patterns_in_body_condition_of_ringed_seals_living_within_their_core.pdf |
geographic |
Canada Nunavut |
geographic_facet |
Canada Nunavut |
genre |
North Atlantic North Atlantic oscillation Nunavut Pusa hispida ringed seal Sea ice |
genre_facet |
North Atlantic North Atlantic oscillation Nunavut Pusa hispida ringed seal Sea ice |
op_source |
Great Lakes Institute for Environmental Research Publications |
op_relation |
https://scholar.uwindsor.ca/glierpub/281 doi:10.1111/ecog.04988 https://scholar.uwindsor.ca/context/glierpub/article/1283/viewcontent/Ecography___2020___Ferguson___Comparing_temporal_patterns_in_body_condition_of_ringed_seals_living_within_their_core.pdf |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
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_ |
1768371468806127616 |