2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5
Abstract: The emperor penguin (Aptenodytes forsteri) is highly dependent on sea ice conditions, and future climate change may affect its distribution and numbers. Most studies on the demography and population dynamics of emperor penguins in relation to sea ice characteristics were conducted at a sin...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1072.4678 2023-05-15T13:56:13+02:00 2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5 Christophe Barbraud Maria Gavrilo Yuri Mizin Henri Weimerskirch The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.4678 http://rus-arc.ru/ShareFiles/Publications/Barbraud_et_al_2011_Emperor_Penguins.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.4678 http://rus-arc.ru/ShareFiles/Publications/Barbraud_et_al_2011_Emperor_Penguins.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://rus-arc.ru/ShareFiles/Publications/Barbraud_et_al_2011_Emperor_Penguins.pdf text ftciteseerx 2020-04-26T00:24:14Z Abstract: The emperor penguin (Aptenodytes forsteri) is highly dependent on sea ice conditions, and future climate change may affect its distribution and numbers. Most studies on the demography and population dynamics of emperor penguins in relation to sea ice characteristics were conducted at a single colony (Pointe Géologie). Several non-exclusive hypotheses have been proposed to explain the dramatic decline of this colony, including changes in sea ice conditions, predation, flipper banding and human disturbance. Here, we report and analyse updated long-term trends in numbers of breeding pairs made at two colonies (Pointe Géologie and Haswell Island) where counts are comparable. Similar changes were observed for both colonies and paralleled changes in sea ice extent. At Pointe Géologie and Haswell Island, populations declined similarly and later growth rates were also similar since the early 1990s for Haswell and early 1980s for Pointe Géologie. The magnitude of the decline was similar between both colonies when numbers of breeding pairs were assessed. This study suggests that a common large-scale environmental factor has probably negatively affected both colonies. Text Antarc* Antarctic Aptenodytes forsteri Emperor penguins Haswell Island Sea ice Unknown Antarctic Haswell Island ENVELOPE(93.000,93.000,-66.517,-66.517) Pointe-Géologie ENVELOPE(140.017,140.017,-66.667,-66.667) |
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Open Polar |
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ftciteseerx |
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English |
description |
Abstract: The emperor penguin (Aptenodytes forsteri) is highly dependent on sea ice conditions, and future climate change may affect its distribution and numbers. Most studies on the demography and population dynamics of emperor penguins in relation to sea ice characteristics were conducted at a single colony (Pointe Géologie). Several non-exclusive hypotheses have been proposed to explain the dramatic decline of this colony, including changes in sea ice conditions, predation, flipper banding and human disturbance. Here, we report and analyse updated long-term trends in numbers of breeding pairs made at two colonies (Pointe Géologie and Haswell Island) where counts are comparable. Similar changes were observed for both colonies and paralleled changes in sea ice extent. At Pointe Géologie and Haswell Island, populations declined similarly and later growth rates were also similar since the early 1990s for Haswell and early 1980s for Pointe Géologie. The magnitude of the decline was similar between both colonies when numbers of breeding pairs were assessed. This study suggests that a common large-scale environmental factor has probably negatively affected both colonies. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Christophe Barbraud Maria Gavrilo Yuri Mizin Henri Weimerskirch |
spellingShingle |
Christophe Barbraud Maria Gavrilo Yuri Mizin Henri Weimerskirch 2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5 |
author_facet |
Christophe Barbraud Maria Gavrilo Yuri Mizin Henri Weimerskirch |
author_sort |
Christophe Barbraud |
title |
2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5 |
title_short |
2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5 |
title_full |
2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5 |
title_fullStr |
2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5 |
title_full_unstemmed |
2011a. Comparison of emperor penguin declines between Pointe Geologie and Haswell Island over the past 50 years. Antarctic Sciences 23(5 |
title_sort |
2011a. comparison of emperor penguin declines between pointe geologie and haswell island over the past 50 years. antarctic sciences 23(5 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.4678 http://rus-arc.ru/ShareFiles/Publications/Barbraud_et_al_2011_Emperor_Penguins.pdf |
long_lat |
ENVELOPE(93.000,93.000,-66.517,-66.517) ENVELOPE(140.017,140.017,-66.667,-66.667) |
geographic |
Antarctic Haswell Island Pointe-Géologie |
geographic_facet |
Antarctic Haswell Island Pointe-Géologie |
genre |
Antarc* Antarctic Aptenodytes forsteri Emperor penguins Haswell Island Sea ice |
genre_facet |
Antarc* Antarctic Aptenodytes forsteri Emperor penguins Haswell Island Sea ice |
op_source |
http://rus-arc.ru/ShareFiles/Publications/Barbraud_et_al_2011_Emperor_Penguins.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1072.4678 http://rus-arc.ru/ShareFiles/Publications/Barbraud_et_al_2011_Emperor_Penguins.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766263583604211712 |