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...
Published in: | Proceedings of the National Academy of Sciences |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
National Academy of Sciences
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1073/pnas.1904048116 https://ora.ox.ac.uk/objects/uuid:30a190b1-529b-4f36-b603-3514a1925d77 |
id |
ftuloxford:oai:ora.ox.ac.uk:uuid:30a190b1-529b-4f36-b603-3514a1925d77 |
---|---|
record_format |
openpolar |
spelling |
ftuloxford:oai:ora.ox.ac.uk:uuid:30a190b1-529b-4f36-b603-3514a1925d77 2023-05-15T13:51:00+02:00 Receding ice drove parallel expansions in Southern Ocean penguins Cole, TL Dutoit, L Dussex, N Hart, T Alexander, A Younger, JL Clucas, GV Frugone, MJ Cherel, Y Cuthbert, R Ellenberg, U Fiddaman, SR Hiscock, J Houston, D Jouventin, P Mattern, T Miller, G Miskelly, C Nolan, P Polito, MJ Quillfeldt, P Ryan, PG Smith, A Tennyson, AJD Thompson, D 2019-11-21 https://doi.org/10.1073/pnas.1904048116 https://ora.ox.ac.uk/objects/uuid:30a190b1-529b-4f36-b603-3514a1925d77 eng eng National Academy of Sciences doi:10.1073/pnas.1904048116 https://ora.ox.ac.uk/objects/uuid:30a190b1-529b-4f36-b603-3514a1925d77 https://doi.org/10.1073/pnas.1904048116 info:eu-repo/semantics/openAccess Journal article 2019 ftuloxford https://doi.org/10.1073/pnas.1904048116 2022-06-28T20:09:06Z 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. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Southern Ocean ORA - Oxford University Research Archive Antarctic Southern Ocean Proceedings of the National Academy of Sciences 116 52 26690 26696 |
institution |
Open Polar |
collection |
ORA - Oxford University Research Archive |
op_collection_id |
ftuloxford |
language |
English |
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 |
Article in Journal/Newspaper |
author |
Cole, TL Dutoit, L Dussex, N Hart, T Alexander, A Younger, JL Clucas, GV Frugone, MJ Cherel, Y Cuthbert, R Ellenberg, U Fiddaman, SR Hiscock, J Houston, D Jouventin, P Mattern, T Miller, G Miskelly, C Nolan, P Polito, MJ Quillfeldt, P Ryan, PG Smith, A Tennyson, AJD Thompson, D |
spellingShingle |
Cole, TL Dutoit, L Dussex, N Hart, T Alexander, A Younger, JL Clucas, GV Frugone, MJ Cherel, Y Cuthbert, R Ellenberg, U Fiddaman, SR Hiscock, J Houston, D Jouventin, P Mattern, T Miller, G Miskelly, C Nolan, P Polito, MJ Quillfeldt, P Ryan, PG Smith, A Tennyson, AJD Thompson, D Receding ice drove parallel expansions in Southern Ocean penguins |
author_facet |
Cole, TL Dutoit, L Dussex, N Hart, T Alexander, A Younger, JL Clucas, GV Frugone, MJ Cherel, Y Cuthbert, R Ellenberg, U Fiddaman, SR Hiscock, J Houston, D Jouventin, P Mattern, T Miller, G Miskelly, C Nolan, P Polito, MJ Quillfeldt, P Ryan, PG Smith, A Tennyson, AJD Thompson, D |
author_sort |
Cole, TL |
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 |
https://doi.org/10.1073/pnas.1904048116 https://ora.ox.ac.uk/objects/uuid:30a190b1-529b-4f36-b603-3514a1925d77 |
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_relation |
doi:10.1073/pnas.1904048116 https://ora.ox.ac.uk/objects/uuid:30a190b1-529b-4f36-b603-3514a1925d77 https://doi.org/10.1073/pnas.1904048116 |
op_rights |
info:eu-repo/semantics/openAccess |
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 |
_version_ |
1766254559281283072 |