Rapid response of a marine mammal species to holocene climate and habitat change.
Environmental change drives demographic and evolutionary processes that determine diversity within and among species. Tracking these processes during periods of change reveals mechanisms for the establishment of populations and provides predictive data on response to potential future impacts, includ...
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ftdoajarticles:oai:doaj.org/article:3251aebbb9404dfc9f98fd7712014a0b 2023-05-15T14:01:12+02:00 Rapid response of a marine mammal species to holocene climate and habitat change. Mark de Bruyn Brenda L Hall Lucas F Chauke Carlo Baroni Paul L Koch A Rus Hoelzel 2009-07-01T00:00:00Z https://doi.org/10.1371/journal.pgen.1000554 https://doaj.org/article/3251aebbb9404dfc9f98fd7712014a0b EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC2700269?pdf=render https://doaj.org/toc/1553-7390 https://doaj.org/toc/1553-7404 1553-7390 1553-7404 doi:10.1371/journal.pgen.1000554 https://doaj.org/article/3251aebbb9404dfc9f98fd7712014a0b PLoS Genetics, Vol 5, Iss 7, p e1000554 (2009) Genetics QH426-470 article 2009 ftdoajarticles https://doi.org/10.1371/journal.pgen.1000554 2022-12-31T01:37:48Z Environmental change drives demographic and evolutionary processes that determine diversity within and among species. Tracking these processes during periods of change reveals mechanisms for the establishment of populations and provides predictive data on response to potential future impacts, including those caused by anthropogenic climate change. Here we show how a highly mobile marine species responded to the gain and loss of new breeding habitat. Southern elephant seal, Mirounga leonina, remains were found along the Victoria Land Coast (VLC) in the Ross Sea, Antarctica, 2,500 km from the nearest extant breeding site on Macquarie Island (MQ). This habitat was released after retreat of the grounded ice sheet in the Ross Sea Embayment 7,500-8,000 cal YBP, and is within the range of modern foraging excursions from the MQ colony. Using ancient mtDNA and coalescent models, we tracked the population dynamics of the now extinct VLC colony and the connectivity between this and extant breeding sites. We found a clear expansion signal in the VLC population approximately 8,000 YBP, followed by directional migration away from VLC and the loss of diversity at approximately 1,000 YBP, when sea ice is thought to have expanded. Our data suggest that VLC seals came initially from MQ and that some returned there once the VLC habitat was lost, approximately 7,000 years later. We track the founder-extinction dynamics of a population from inception to extinction in the context of Holocene climate change and present evidence that an unexpectedly diverse, differentiated breeding population was founded from a distant source population soon after habitat became available. Article in Journal/Newspaper Antarc* Antarctica Elephant Seal Ice Sheet Macquarie Island Mirounga leonina Ross Sea Sea ice Southern Elephant Seal Victoria Land Directory of Open Access Journals: DOAJ Articles Ross Sea Victoria Land PLoS Genetics 5 7 e1000554 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Genetics QH426-470 |
spellingShingle |
Genetics QH426-470 Mark de Bruyn Brenda L Hall Lucas F Chauke Carlo Baroni Paul L Koch A Rus Hoelzel Rapid response of a marine mammal species to holocene climate and habitat change. |
topic_facet |
Genetics QH426-470 |
description |
Environmental change drives demographic and evolutionary processes that determine diversity within and among species. Tracking these processes during periods of change reveals mechanisms for the establishment of populations and provides predictive data on response to potential future impacts, including those caused by anthropogenic climate change. Here we show how a highly mobile marine species responded to the gain and loss of new breeding habitat. Southern elephant seal, Mirounga leonina, remains were found along the Victoria Land Coast (VLC) in the Ross Sea, Antarctica, 2,500 km from the nearest extant breeding site on Macquarie Island (MQ). This habitat was released after retreat of the grounded ice sheet in the Ross Sea Embayment 7,500-8,000 cal YBP, and is within the range of modern foraging excursions from the MQ colony. Using ancient mtDNA and coalescent models, we tracked the population dynamics of the now extinct VLC colony and the connectivity between this and extant breeding sites. We found a clear expansion signal in the VLC population approximately 8,000 YBP, followed by directional migration away from VLC and the loss of diversity at approximately 1,000 YBP, when sea ice is thought to have expanded. Our data suggest that VLC seals came initially from MQ and that some returned there once the VLC habitat was lost, approximately 7,000 years later. We track the founder-extinction dynamics of a population from inception to extinction in the context of Holocene climate change and present evidence that an unexpectedly diverse, differentiated breeding population was founded from a distant source population soon after habitat became available. |
format |
Article in Journal/Newspaper |
author |
Mark de Bruyn Brenda L Hall Lucas F Chauke Carlo Baroni Paul L Koch A Rus Hoelzel |
author_facet |
Mark de Bruyn Brenda L Hall Lucas F Chauke Carlo Baroni Paul L Koch A Rus Hoelzel |
author_sort |
Mark de Bruyn |
title |
Rapid response of a marine mammal species to holocene climate and habitat change. |
title_short |
Rapid response of a marine mammal species to holocene climate and habitat change. |
title_full |
Rapid response of a marine mammal species to holocene climate and habitat change. |
title_fullStr |
Rapid response of a marine mammal species to holocene climate and habitat change. |
title_full_unstemmed |
Rapid response of a marine mammal species to holocene climate and habitat change. |
title_sort |
rapid response of a marine mammal species to holocene climate and habitat change. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2009 |
url |
https://doi.org/10.1371/journal.pgen.1000554 https://doaj.org/article/3251aebbb9404dfc9f98fd7712014a0b |
geographic |
Ross Sea Victoria Land |
geographic_facet |
Ross Sea Victoria Land |
genre |
Antarc* Antarctica Elephant Seal Ice Sheet Macquarie Island Mirounga leonina Ross Sea Sea ice Southern Elephant Seal Victoria Land |
genre_facet |
Antarc* Antarctica Elephant Seal Ice Sheet Macquarie Island Mirounga leonina Ross Sea Sea ice Southern Elephant Seal Victoria Land |
op_source |
PLoS Genetics, Vol 5, Iss 7, p e1000554 (2009) |
op_relation |
http://europepmc.org/articles/PMC2700269?pdf=render https://doaj.org/toc/1553-7390 https://doaj.org/toc/1553-7404 1553-7390 1553-7404 doi:10.1371/journal.pgen.1000554 https://doaj.org/article/3251aebbb9404dfc9f98fd7712014a0b |
op_doi |
https://doi.org/10.1371/journal.pgen.1000554 |
container_title |
PLoS Genetics |
container_volume |
5 |
container_issue |
7 |
container_start_page |
e1000554 |
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1766270799872786432 |