50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals
Abstract Ice is one of the most important drivers of population dynamics in polar organisms, influencing the locations, sizes, and connectivity of populations. Antarctic fur seals, Arctocephalus gazella , are particularly interesting in this regard, as they are concomitantly reliant on both ice‐asso...
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crwiley:10.1002/ece3.8104 2024-03-17T08:54:14+00:00 50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. 2021 http://dx.doi.org/10.1002/ece3.8104 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8104 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8104 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 11, issue 20, page 14003-14011 ISSN 2045-7758 2045-7758 Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics journal-article 2021 crwiley https://doi.org/10.1002/ece3.8104 2024-02-22T00:12:34Z Abstract Ice is one of the most important drivers of population dynamics in polar organisms, influencing the locations, sizes, and connectivity of populations. Antarctic fur seals, Arctocephalus gazella , are particularly interesting in this regard, as they are concomitantly reliant on both ice‐associated prey and ice‐free coastal breeding areas. We reconstructed the history of this species through the Last Glacial Maximum (LGM) using genomic sequence data from seals across their range. Population size trends and divergence events were investigated using continuous‐time size estimation analysis and divergence time estimation models. The combined results indicated that a panmictic population present prior to the LGM split into two small refugial populations during peak ice extent. Following ice decline, the western refugial population founded colonies at the South Shetlands, South Georgia, and Bouvetøya, while the eastern refugial population founded the colony on Iles Kerguelen. Postglacial population divergence times closely match geological estimates of when these coastal breeding areas became ice free. Given the predictions regarding continued future warming in polar oceans, these responses of Antarctic fur seals to past climate variation suggest it may be worthwhile giving conservation consideration to potential future breeding locations, such as areas further south along the Antarctic Peninsula, in addition to present colony areas. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Antarctic Peninsula Arctocephalus gazella Bouvetøya Wiley Online Library Antarctic Antarctic Peninsula Bouvetøya ENVELOPE(3.358,3.358,-54.422,-54.422) Kerguelen The Antarctic Ecology and Evolution 11 20 14003 14011 |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
topic |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. 50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
topic_facet |
Nature and Landscape Conservation Ecology Ecology, Evolution, Behavior and Systematics |
description |
Abstract Ice is one of the most important drivers of population dynamics in polar organisms, influencing the locations, sizes, and connectivity of populations. Antarctic fur seals, Arctocephalus gazella , are particularly interesting in this regard, as they are concomitantly reliant on both ice‐associated prey and ice‐free coastal breeding areas. We reconstructed the history of this species through the Last Glacial Maximum (LGM) using genomic sequence data from seals across their range. Population size trends and divergence events were investigated using continuous‐time size estimation analysis and divergence time estimation models. The combined results indicated that a panmictic population present prior to the LGM split into two small refugial populations during peak ice extent. Following ice decline, the western refugial population founded colonies at the South Shetlands, South Georgia, and Bouvetøya, while the eastern refugial population founded the colony on Iles Kerguelen. Postglacial population divergence times closely match geological estimates of when these coastal breeding areas became ice free. Given the predictions regarding continued future warming in polar oceans, these responses of Antarctic fur seals to past climate variation suggest it may be worthwhile giving conservation consideration to potential future breeding locations, such as areas further south along the Antarctic Peninsula, in addition to present colony areas. |
format |
Article in Journal/Newspaper |
author |
Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. |
author_facet |
Cleary, Alison C. Hoffman, Joseph I. Forcada, Jaume Lydersen, Christian Lowther, Andrew D. Kovacs, Kit M. |
author_sort |
Cleary, Alison C. |
title |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_short |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_full |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_fullStr |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_full_unstemmed |
50,000 years of ice and seals: Impacts of the Last Glacial Maximum on Antarctic fur seals |
title_sort |
50,000 years of ice and seals: impacts of the last glacial maximum on antarctic fur seals |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ece3.8104 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.8104 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.8104 |
long_lat |
ENVELOPE(3.358,3.358,-54.422,-54.422) |
geographic |
Antarctic Antarctic Peninsula Bouvetøya Kerguelen The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Bouvetøya Kerguelen The Antarctic |
genre |
Antarc* Antarctic Antarctic Fur Seals Antarctic Peninsula Arctocephalus gazella Bouvetøya |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Antarctic Peninsula Arctocephalus gazella Bouvetøya |
op_source |
Ecology and Evolution volume 11, issue 20, page 14003-14011 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.8104 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
20 |
container_start_page |
14003 |
op_container_end_page |
14011 |
_version_ |
1793772309220163584 |