The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica
Abstract: We report new discoveries and radiocarbon dates on active and abandoned Adélie penguin (Pygoscelis adeliae) colonies at Cape Adare, Antarctica. This colony, first established at approximately 2000 BP (calendar years before present, i.e. 1950), is currently the largest for this species with...
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IEDA: US Antarctic Program Data Center
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dataone:http://get.iedadata.org/metadata/iso/601327 2023-11-08T14:14:08+01:00 The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica Emslie, Steve Mckenzie, Ashley Patterson, William BEGINDATE: 2005-01-25T00:00:00Z ENDDATE: 2016-01-14T00:00:00Z 2020-06-02T00:00:00Z http://get.iedadata.org/metadata/iso/601327 unknown IEDA: US Antarctic Program Data Center Stable Isotopes Adelie Penguin Population Movement Sea Level Rise Biology Biosphere Cryosphere Antarctica East Antarctica Ross Sea US Antarctic Program Data Center (USAP-DC) Dataset 2020 dataone:urn:node:IEDA_USAP 2023-11-08T13:46:38Z Abstract: We report new discoveries and radiocarbon dates on active and abandoned Adélie penguin (Pygoscelis adeliae) colonies at Cape Adare, Antarctica. This colony, first established at approximately 2000 BP (calendar years before present, i.e. 1950), is currently the largest for this species with approximately 338 000 breeding pairs, most located on lowlying Ridley Beach. We hypothesize that this colony first formed after fast ice began blocking open-water access by breeding penguins to the Scott Coast in the southern Ross Sea during a cooling period also at approximately 2000 BP. Our results suggest that the new colony at Cape Adare continued to grow, expanding to a large upper terrace above Ridley Beach, until it exceeded approximately 500 000 breeding pairs (a 'supercolony') by approximately 1200 BP. The high marine productivity associated with the Ross Sea polynya and continental shelf break supported this growth, but the colony collapsed to its present size for unknown reasons after approximately 1200 BP. Ridley Beach will probably be abandoned in the near future due to rising sea level in this region. We predict that penguins will retreat to higher elevations at Cape Adare and that the Scott Coast will be reoccupied by breeding penguins as fast ice continues to dissipate earlier each summer, restoring open-water access to beaches there. Dataset Adelie penguin Antarc* Antarctic Antarctica East Antarctica Pygoscelis adeliae Ross Sea IEDA: US Antarctic Program Data Center (via DataONE) Antarctic East Antarctica Ross Sea Adare ENVELOPE(170.233,170.233,-71.283,-71.283) Cape Adare ENVELOPE(175.000,175.000,-71.000,-71.000) Scott Coast ENVELOPE(162.500,162.500,-76.500,-76.500) Ridley Beach ENVELOPE(170.217,170.217,-71.300,-71.300) Ridley ENVELOPE(-58.017,-58.017,-61.850,-61.850) |
institution |
Open Polar |
collection |
IEDA: US Antarctic Program Data Center (via DataONE) |
op_collection_id |
dataone:urn:node:IEDA_USAP |
language |
unknown |
topic |
Stable Isotopes Adelie Penguin Population Movement Sea Level Rise Biology Biosphere Cryosphere Antarctica East Antarctica Ross Sea US Antarctic Program Data Center (USAP-DC) |
spellingShingle |
Stable Isotopes Adelie Penguin Population Movement Sea Level Rise Biology Biosphere Cryosphere Antarctica East Antarctica Ross Sea US Antarctic Program Data Center (USAP-DC) Emslie, Steve Mckenzie, Ashley Patterson, William The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica |
topic_facet |
Stable Isotopes Adelie Penguin Population Movement Sea Level Rise Biology Biosphere Cryosphere Antarctica East Antarctica Ross Sea US Antarctic Program Data Center (USAP-DC) |
description |
Abstract: We report new discoveries and radiocarbon dates on active and abandoned Adélie penguin (Pygoscelis adeliae) colonies at Cape Adare, Antarctica. This colony, first established at approximately 2000 BP (calendar years before present, i.e. 1950), is currently the largest for this species with approximately 338 000 breeding pairs, most located on lowlying Ridley Beach. We hypothesize that this colony first formed after fast ice began blocking open-water access by breeding penguins to the Scott Coast in the southern Ross Sea during a cooling period also at approximately 2000 BP. Our results suggest that the new colony at Cape Adare continued to grow, expanding to a large upper terrace above Ridley Beach, until it exceeded approximately 500 000 breeding pairs (a 'supercolony') by approximately 1200 BP. The high marine productivity associated with the Ross Sea polynya and continental shelf break supported this growth, but the colony collapsed to its present size for unknown reasons after approximately 1200 BP. Ridley Beach will probably be abandoned in the near future due to rising sea level in this region. We predict that penguins will retreat to higher elevations at Cape Adare and that the Scott Coast will be reoccupied by breeding penguins as fast ice continues to dissipate earlier each summer, restoring open-water access to beaches there. |
format |
Dataset |
author |
Emslie, Steve Mckenzie, Ashley Patterson, William |
author_facet |
Emslie, Steve Mckenzie, Ashley Patterson, William |
author_sort |
Emslie, Steve |
title |
The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica |
title_short |
The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica |
title_full |
The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica |
title_fullStr |
The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica |
title_full_unstemmed |
The rise and fall of an ancient Adelie penguin 'supercolony' at Cape Adare, Antarctica |
title_sort |
rise and fall of an ancient adelie penguin 'supercolony' at cape adare, antarctica |
publisher |
IEDA: US Antarctic Program Data Center |
publishDate |
2020 |
url |
http://get.iedadata.org/metadata/iso/601327 |
op_coverage |
BEGINDATE: 2005-01-25T00:00:00Z ENDDATE: 2016-01-14T00:00:00Z |
long_lat |
ENVELOPE(170.233,170.233,-71.283,-71.283) ENVELOPE(175.000,175.000,-71.000,-71.000) ENVELOPE(162.500,162.500,-76.500,-76.500) ENVELOPE(170.217,170.217,-71.300,-71.300) ENVELOPE(-58.017,-58.017,-61.850,-61.850) |
geographic |
Antarctic East Antarctica Ross Sea Adare Cape Adare Scott Coast Ridley Beach Ridley |
geographic_facet |
Antarctic East Antarctica Ross Sea Adare Cape Adare Scott Coast Ridley Beach Ridley |
genre |
Adelie penguin Antarc* Antarctic Antarctica East Antarctica Pygoscelis adeliae Ross Sea |
genre_facet |
Adelie penguin Antarc* Antarctic Antarctica East Antarctica Pygoscelis adeliae Ross Sea |
_version_ |
1782012271278424064 |