Receding ice drove parallel expansions in Southern Ocean penguins
Climate shifts are key drivers of ecosystem change. Despite the critical importance of Antarctica and the Southern Ocean for global climate, the extent of climate-driven ecological change in this region remains controversial. In particular, the biological effects of changing sea ice conditions are p...
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ftpubmed:oai:pubmedcentral.nih.gov:6936587 2023-05-15T13:30:52+02:00 Receding ice drove parallel expansions in Southern Ocean penguins Cole, Theresa L. Dutoit, Ludovic Dussex, Nicolas Hart, Tom Alexander, Alana Younger, Jane L. Clucas, Gemma V. Frugone, María José Cherel, Yves Cuthbert, Richard Ellenberg, Ursula Fiddaman, Steven R. Hiscock, Johanna Houston, David Jouventin, Pierre Mattern, Thomas Miller, Gary Miskelly, Colin Nolan, Paul Polito, Michael J. Quillfeldt, Petra Ryan, Peter G. Smith, Adrian Tennyson, Alan J. D. Thompson, David Wienecke, Barbara Vianna, Juliana A. Waters, Jonathan M. 2019-12-26 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6936587/ http://www.ncbi.nlm.nih.gov/pubmed/31843914 https://doi.org/10.1073/pnas.1904048116 en eng National Academy of Sciences http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6936587/ http://www.ncbi.nlm.nih.gov/pubmed/31843914 http://dx.doi.org/10.1073/pnas.1904048116 https://www.pnas.org/site/aboutpnas/licenses.xhtmlPublished under the PNAS license (https://www.pnas.org/site/aboutpnas/licenses.xhtml) . Proc Natl Acad Sci U S A Biological Sciences Text 2019 ftpubmed https://doi.org/10.1073/pnas.1904048116 2020-06-21T00:16:22Z Climate shifts are key drivers of ecosystem change. Despite the critical importance of Antarctica and the Southern Ocean for global climate, the extent of climate-driven ecological change in this region remains controversial. In particular, the biological effects of changing sea ice conditions are poorly understood. We hypothesize that rapid postglacial reductions in sea ice drove biological shifts across multiple widespread Southern Ocean species. We test for demographic shifts driven by climate events over recent millennia by analyzing population genomic datasets spanning 3 penguin genera (Eudyptes, Pygoscelis, and Aptenodytes). Demographic analyses for multiple species (macaroni/royal, eastern rockhopper, Adélie, gentoo, king, and emperor) currently inhabiting southern coastlines affected by heavy sea ice conditions during the Last Glacial Maximum (LGM) yielded genetic signatures of near-simultaneous population expansions associated with postglacial warming. Populations of the ice-adapted emperor penguin are inferred to have expanded slightly earlier than those of species requiring ice-free terrain. These concerted high-latitude expansion events contrast with relatively stable or declining demographic histories inferred for 4 penguin species (northern rockhopper, western rockhopper, Fiordland crested, and Snares crested) that apparently persisted throughout the LGM in ice-free habitats. Limited genetic structure detected in all ice-affected species across the vast Southern Ocean may reflect both rapid postglacial colonization of subantarctic and Antarctic shores, in addition to recent genetic exchange among populations. Together, these analyses highlight dramatic, ecosystem-wide responses to past Southern Ocean climate change and suggest potential for further shifts as warming continues. Text Antarc* Antarctic Antarctica Sea ice Southern Ocean PubMed Central (PMC) Antarctic Southern Ocean Proceedings of the National Academy of Sciences 116 52 26690 26696 |
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PubMed Central (PMC) |
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ftpubmed |
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English |
topic |
Biological Sciences |
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Biological Sciences Cole, Theresa L. Dutoit, Ludovic Dussex, Nicolas Hart, Tom Alexander, Alana Younger, Jane L. Clucas, Gemma V. Frugone, María José Cherel, Yves Cuthbert, Richard Ellenberg, Ursula Fiddaman, Steven R. Hiscock, Johanna Houston, David Jouventin, Pierre Mattern, Thomas Miller, Gary Miskelly, Colin Nolan, Paul Polito, Michael J. Quillfeldt, Petra Ryan, Peter G. Smith, Adrian Tennyson, Alan J. D. Thompson, David Wienecke, Barbara Vianna, Juliana A. Waters, Jonathan M. Receding ice drove parallel expansions in Southern Ocean penguins |
topic_facet |
Biological Sciences |
description |
Climate shifts are key drivers of ecosystem change. Despite the critical importance of Antarctica and the Southern Ocean for global climate, the extent of climate-driven ecological change in this region remains controversial. In particular, the biological effects of changing sea ice conditions are poorly understood. We hypothesize that rapid postglacial reductions in sea ice drove biological shifts across multiple widespread Southern Ocean species. We test for demographic shifts driven by climate events over recent millennia by analyzing population genomic datasets spanning 3 penguin genera (Eudyptes, Pygoscelis, and Aptenodytes). Demographic analyses for multiple species (macaroni/royal, eastern rockhopper, Adélie, gentoo, king, and emperor) currently inhabiting southern coastlines affected by heavy sea ice conditions during the Last Glacial Maximum (LGM) yielded genetic signatures of near-simultaneous population expansions associated with postglacial warming. Populations of the ice-adapted emperor penguin are inferred to have expanded slightly earlier than those of species requiring ice-free terrain. These concerted high-latitude expansion events contrast with relatively stable or declining demographic histories inferred for 4 penguin species (northern rockhopper, western rockhopper, Fiordland crested, and Snares crested) that apparently persisted throughout the LGM in ice-free habitats. Limited genetic structure detected in all ice-affected species across the vast Southern Ocean may reflect both rapid postglacial colonization of subantarctic and Antarctic shores, in addition to recent genetic exchange among populations. Together, these analyses highlight dramatic, ecosystem-wide responses to past Southern Ocean climate change and suggest potential for further shifts as warming continues. |
format |
Text |
author |
Cole, Theresa L. Dutoit, Ludovic Dussex, Nicolas Hart, Tom Alexander, Alana Younger, Jane L. Clucas, Gemma V. Frugone, María José Cherel, Yves Cuthbert, Richard Ellenberg, Ursula Fiddaman, Steven R. Hiscock, Johanna Houston, David Jouventin, Pierre Mattern, Thomas Miller, Gary Miskelly, Colin Nolan, Paul Polito, Michael J. Quillfeldt, Petra Ryan, Peter G. Smith, Adrian Tennyson, Alan J. D. Thompson, David Wienecke, Barbara Vianna, Juliana A. Waters, Jonathan M. |
author_facet |
Cole, Theresa L. Dutoit, Ludovic Dussex, Nicolas Hart, Tom Alexander, Alana Younger, Jane L. Clucas, Gemma V. Frugone, María José Cherel, Yves Cuthbert, Richard Ellenberg, Ursula Fiddaman, Steven R. Hiscock, Johanna Houston, David Jouventin, Pierre Mattern, Thomas Miller, Gary Miskelly, Colin Nolan, Paul Polito, Michael J. Quillfeldt, Petra Ryan, Peter G. Smith, Adrian Tennyson, Alan J. D. Thompson, David Wienecke, Barbara Vianna, Juliana A. Waters, Jonathan M. |
author_sort |
Cole, Theresa L. |
title |
Receding ice drove parallel expansions in Southern Ocean penguins |
title_short |
Receding ice drove parallel expansions in Southern Ocean penguins |
title_full |
Receding ice drove parallel expansions in Southern Ocean penguins |
title_fullStr |
Receding ice drove parallel expansions in Southern Ocean penguins |
title_full_unstemmed |
Receding ice drove parallel expansions in Southern Ocean penguins |
title_sort |
receding ice drove parallel expansions in southern ocean penguins |
publisher |
National Academy of Sciences |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6936587/ http://www.ncbi.nlm.nih.gov/pubmed/31843914 https://doi.org/10.1073/pnas.1904048116 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
op_source |
Proc Natl Acad Sci U S A |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6936587/ http://www.ncbi.nlm.nih.gov/pubmed/31843914 http://dx.doi.org/10.1073/pnas.1904048116 |
op_rights |
https://www.pnas.org/site/aboutpnas/licenses.xhtmlPublished under the PNAS license (https://www.pnas.org/site/aboutpnas/licenses.xhtml) . |
op_doi |
https://doi.org/10.1073/pnas.1904048116 |
container_title |
Proceedings of the National Academy of Sciences |
container_volume |
116 |
container_issue |
52 |
container_start_page |
26690 |
op_container_end_page |
26696 |
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1766013309812736000 |