Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation
There will be winners and losers as climate change alters the habitats of polar organisms. For an Adelie penguin (Pygoscelis adeliae) colony on Beaufort Island (Beaufort), part of a cluster of colonies in the southern Ross Sea, we report a recent population increase in response to increased nesting...
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ftoregonstate:ir.library.oregonstate.edu:d217qq01v 2024-04-14T08:00:15+00:00 Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation LaRue, Michelle A. Ainley, David G. Swanson, Matt Dugger, Katie M. Lyver, Phil O'B. Barton, Kerry Ballard, Grant Fisheries and Wildlife https://ir.library.oregonstate.edu/concern/articles/d217qq01v English [eng] eng unknown Public Library of Science https://ir.library.oregonstate.edu/concern/articles/d217qq01v CC0 1.0 Universal Article ftoregonstate 2024-03-21T15:43:26Z There will be winners and losers as climate change alters the habitats of polar organisms. For an Adelie penguin (Pygoscelis adeliae) colony on Beaufort Island (Beaufort), part of a cluster of colonies in the southern Ross Sea, we report a recent population increase in response to increased nesting habitat as glaciers have receded. Emigration rates of birds banded as chicks on Beaufort to colonies on nearby Ross Island decreased after 2005 as available habitat on Beaufort increased, leading to altered dynamics of the metapopulation. Using aerial photography beginning in 1958 and modern satellite imagery, we measured change in area of available nesting habitat and population size of the Beaufort colony. Population size varied with available habitat, and both increased rapidly since the 1990s. In accord with glacial retreat, summer temperatures at nearby McMurdo Station increased by similar to 0.50 degrees C per decade since the mid-1980s. Although the Ross Sea is likely to be the last ocean with an intact ecosystem, the recent retreat of ice fields at Beaufort that resulted in increased breeding habitat exemplifies a process that has been underway in the Ross Sea during the entire Holocene. Furthermore, our results are in line with predictions that major ice shelves and glaciers will retreat rapidly elsewhere in the Antarctic, potentially leading to increased breeding habitat for Adelie penguins. Results further indicated that satellite imagery may be used to estimate large changes in Adelie penguin populations, facilitating our understanding of metapopulation dynamics and environmental factors that influence regional populations. Article in Journal/Newspaper Adelie penguin Antarc* Antarctic Beaufort Island Ice Shelves Pygoscelis adeliae Ross Island Ross Sea ScholarsArchive@OSU (Oregon State University) Antarctic The Antarctic Ross Sea Ross Island McMurdo Station ENVELOPE(166.667,166.667,-77.850,-77.850) Beaufort Island ENVELOPE(166.833,166.833,-76.933,-76.933) |
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English unknown |
description |
There will be winners and losers as climate change alters the habitats of polar organisms. For an Adelie penguin (Pygoscelis adeliae) colony on Beaufort Island (Beaufort), part of a cluster of colonies in the southern Ross Sea, we report a recent population increase in response to increased nesting habitat as glaciers have receded. Emigration rates of birds banded as chicks on Beaufort to colonies on nearby Ross Island decreased after 2005 as available habitat on Beaufort increased, leading to altered dynamics of the metapopulation. Using aerial photography beginning in 1958 and modern satellite imagery, we measured change in area of available nesting habitat and population size of the Beaufort colony. Population size varied with available habitat, and both increased rapidly since the 1990s. In accord with glacial retreat, summer temperatures at nearby McMurdo Station increased by similar to 0.50 degrees C per decade since the mid-1980s. Although the Ross Sea is likely to be the last ocean with an intact ecosystem, the recent retreat of ice fields at Beaufort that resulted in increased breeding habitat exemplifies a process that has been underway in the Ross Sea during the entire Holocene. Furthermore, our results are in line with predictions that major ice shelves and glaciers will retreat rapidly elsewhere in the Antarctic, potentially leading to increased breeding habitat for Adelie penguins. Results further indicated that satellite imagery may be used to estimate large changes in Adelie penguin populations, facilitating our understanding of metapopulation dynamics and environmental factors that influence regional populations. |
author2 |
Fisheries and Wildlife |
format |
Article in Journal/Newspaper |
author |
LaRue, Michelle A. Ainley, David G. Swanson, Matt Dugger, Katie M. Lyver, Phil O'B. Barton, Kerry Ballard, Grant |
spellingShingle |
LaRue, Michelle A. Ainley, David G. Swanson, Matt Dugger, Katie M. Lyver, Phil O'B. Barton, Kerry Ballard, Grant Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation |
author_facet |
LaRue, Michelle A. Ainley, David G. Swanson, Matt Dugger, Katie M. Lyver, Phil O'B. Barton, Kerry Ballard, Grant |
author_sort |
LaRue, Michelle A. |
title |
Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation |
title_short |
Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation |
title_full |
Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation |
title_fullStr |
Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation |
title_full_unstemmed |
Climate Change Winners: Receding Ice Fields Facilitate Colony Expansion and Altered Dynamics in an Adélie Penguin Metapopulation |
title_sort |
climate change winners: receding ice fields facilitate colony expansion and altered dynamics in an adélie penguin metapopulation |
publisher |
Public Library of Science |
url |
https://ir.library.oregonstate.edu/concern/articles/d217qq01v |
long_lat |
ENVELOPE(166.667,166.667,-77.850,-77.850) ENVELOPE(166.833,166.833,-76.933,-76.933) |
geographic |
Antarctic The Antarctic Ross Sea Ross Island McMurdo Station Beaufort Island |
geographic_facet |
Antarctic The Antarctic Ross Sea Ross Island McMurdo Station Beaufort Island |
genre |
Adelie penguin Antarc* Antarctic Beaufort Island Ice Shelves Pygoscelis adeliae Ross Island Ross Sea |
genre_facet |
Adelie penguin Antarc* Antarctic Beaufort Island Ice Shelves Pygoscelis adeliae Ross Island Ross Sea |
op_relation |
https://ir.library.oregonstate.edu/concern/articles/d217qq01v |
op_rights |
CC0 1.0 Universal |
_version_ |
1796318639708700672 |