Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum
The relationship between population structure and demographic history is critical to understanding microevolution and for predicting the resilience of species to environmental change. Using mitochondrial DNA from extant colonies and radiocarbon-dated subfossils, we present the first microevolutionar...
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Wiley
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Online Access: | http://nora.nerc.ac.uk/id/eprint/507867/ |
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ftnerc:oai:nora.nerc.ac.uk:507867 2024-02-11T09:58:38+01:00 Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Phillip Hart, Tom Miller, Karen J. 2015-06 http://nora.nerc.ac.uk/id/eprint/507867/ unknown Wiley Younger, Jane L.; Clucas, Gemma V.; Kooyman, Gerald; Wienecke, Barbara; Rogers, Alex D.; Trathan, Phillip orcid:0000-0001-6673-9930 Hart, Tom; Miller, Karen J. 2015 Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum. Global Change Biology, 21 (6). 2215-2226. https://doi.org/10.1111/gcb.12882 <https://doi.org/10.1111/gcb.12882> Publication - Article PeerReviewed 2015 ftnerc https://doi.org/10.1111/gcb.12882 2024-01-12T00:03:13Z The relationship between population structure and demographic history is critical to understanding microevolution and for predicting the resilience of species to environmental change. Using mitochondrial DNA from extant colonies and radiocarbon-dated subfossils, we present the first microevolutionary analysis of emperor penguins (Aptenodytes forsteri) and show their population trends throughout the last glacial maximum (LGM, 19.5–16 kya) and during the subsequent period of warming and sea ice retreat. We found evidence for three mitochondrial clades within emperor penguins, suggesting that they were isolated within three glacial refugia during the LGM. One of these clades has remained largely isolated within the Ross Sea, while the two other clades have intermixed around the coast of Antarctica from Adélie Land to the Weddell Sea. The differentiation of the Ross Sea population has been preserved despite rapid population growth and opportunities for migration. Low effective population sizes during the LGM, followed by a rapid expansion around the beginning of the Holocene, suggest that an optimum set of sea ice conditions exist for emperor penguins, corresponding to available foraging area. Article in Journal/Newspaper Antarc* Antarctica Aptenodytes forsteri Emperor penguins Ross Sea Sea ice Weddell Sea Natural Environment Research Council: NERC Open Research Archive Weddell Sea Ross Sea Weddell Kya ENVELOPE(8.308,8.308,63.772,63.772) Global Change Biology 21 6 2215 2226 |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
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The relationship between population structure and demographic history is critical to understanding microevolution and for predicting the resilience of species to environmental change. Using mitochondrial DNA from extant colonies and radiocarbon-dated subfossils, we present the first microevolutionary analysis of emperor penguins (Aptenodytes forsteri) and show their population trends throughout the last glacial maximum (LGM, 19.5–16 kya) and during the subsequent period of warming and sea ice retreat. We found evidence for three mitochondrial clades within emperor penguins, suggesting that they were isolated within three glacial refugia during the LGM. One of these clades has remained largely isolated within the Ross Sea, while the two other clades have intermixed around the coast of Antarctica from Adélie Land to the Weddell Sea. The differentiation of the Ross Sea population has been preserved despite rapid population growth and opportunities for migration. Low effective population sizes during the LGM, followed by a rapid expansion around the beginning of the Holocene, suggest that an optimum set of sea ice conditions exist for emperor penguins, corresponding to available foraging area. |
format |
Article in Journal/Newspaper |
author |
Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Phillip Hart, Tom Miller, Karen J. |
spellingShingle |
Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Phillip Hart, Tom Miller, Karen J. Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
author_facet |
Younger, Jane L. Clucas, Gemma V. Kooyman, Gerald Wienecke, Barbara Rogers, Alex D. Trathan, Phillip Hart, Tom Miller, Karen J. |
author_sort |
Younger, Jane L. |
title |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_short |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_full |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_fullStr |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_full_unstemmed |
Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
title_sort |
too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum |
publisher |
Wiley |
publishDate |
2015 |
url |
http://nora.nerc.ac.uk/id/eprint/507867/ |
long_lat |
ENVELOPE(8.308,8.308,63.772,63.772) |
geographic |
Weddell Sea Ross Sea Weddell Kya |
geographic_facet |
Weddell Sea Ross Sea Weddell Kya |
genre |
Antarc* Antarctica Aptenodytes forsteri Emperor penguins Ross Sea Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctica Aptenodytes forsteri Emperor penguins Ross Sea Sea ice Weddell Sea |
op_relation |
Younger, Jane L.; Clucas, Gemma V.; Kooyman, Gerald; Wienecke, Barbara; Rogers, Alex D.; Trathan, Phillip orcid:0000-0001-6673-9930 Hart, Tom; Miller, Karen J. 2015 Too much of a good thing: sea ice extent may have forced emperor penguins into refugia during the last glacial maximum. Global Change Biology, 21 (6). 2215-2226. https://doi.org/10.1111/gcb.12882 <https://doi.org/10.1111/gcb.12882> |
op_doi |
https://doi.org/10.1111/gcb.12882 |
container_title |
Global Change Biology |
container_volume |
21 |
container_issue |
6 |
container_start_page |
2215 |
op_container_end_page |
2226 |
_version_ |
1790594339905208320 |