Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea
International audience Recent studies have shown that the Antarctic Circumpolar Wave and the related sea-ice cover around the Antarctic continent may have a profound effect on the lower trophic levels of the marine environment. In particular, extensive sea-ice cover enhances the survival of krill. H...
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fttriple:oai:gotriple.eu:10670/1.xyh4k5 2023-05-15T14:00:48+02:00 Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea Barbraud, Christophe Weimerskirch, Henri Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2001-01-01 https://hal.archives-ouvertes.fr/hal-00192297 en eng HAL CCSD Wiley hal-00192297 10670/1.xyh4k5 https://hal.archives-ouvertes.fr/hal-00192297 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0908-8857 EISSN: 1600-048X Journal of Avian Biology Journal of Avian Biology, Wiley, 2001, 32, pp.297-302 geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2001 fttriple 2023-01-22T18:32:18Z International audience Recent studies have shown that the Antarctic Circumpolar Wave and the related sea-ice cover around the Antarctic continent may have a profound effect on the lower trophic levels of the marine environment. In particular, extensive sea-ice cover enhances the survival of krill. However, the effects of sea-ice cover on top predators remain poorly understood. Using time series from 1973 to 1999, we examine the influence of regional sea-ice extent on a number of indices of breeding performance of an avian predator, the Snow Petrel, in Antarctica. The percentage of breeding pairs was highly variable and there were fewer birds breeding when sea-ice cover was extensive during July. By contrast, overall breeding success and fledgling body condition were improved during years with extensive sea-ice cover during the preceding November and July-September. These results indicate that the same sea-ice conditions may have different effects on the breeding performance of a species. The overall increase in winter sea-ice extent during the last decade appears to have resulted in an overall improvement of the quality of fledglings produced, and thus probably of future recruitment. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Snow Petrel Unknown Antarctic Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) The Antarctic |
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English |
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geo envir Barbraud, Christophe Weimerskirch, Henri Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea |
topic_facet |
geo envir |
description |
International audience Recent studies have shown that the Antarctic Circumpolar Wave and the related sea-ice cover around the Antarctic continent may have a profound effect on the lower trophic levels of the marine environment. In particular, extensive sea-ice cover enhances the survival of krill. However, the effects of sea-ice cover on top predators remain poorly understood. Using time series from 1973 to 1999, we examine the influence of regional sea-ice extent on a number of indices of breeding performance of an avian predator, the Snow Petrel, in Antarctica. The percentage of breeding pairs was highly variable and there were fewer birds breeding when sea-ice cover was extensive during July. By contrast, overall breeding success and fledgling body condition were improved during years with extensive sea-ice cover during the preceding November and July-September. These results indicate that the same sea-ice conditions may have different effects on the breeding performance of a species. The overall increase in winter sea-ice extent during the last decade appears to have resulted in an overall improvement of the quality of fledglings produced, and thus probably of future recruitment. |
author2 |
Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Barbraud, Christophe Weimerskirch, Henri |
author_facet |
Barbraud, Christophe Weimerskirch, Henri |
author_sort |
Barbraud, Christophe |
title |
Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea |
title_short |
Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea |
title_full |
Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea |
title_fullStr |
Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea |
title_full_unstemmed |
Contrasting effects of the extent of sea-ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea |
title_sort |
contrasting effects of the extent of sea-ice on the breeding performance of an antarctic top predator, the snow petrel pagodroma nivea |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.archives-ouvertes.fr/hal-00192297 |
long_lat |
ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
geographic |
Antarctic Nivea The Antarctic |
geographic_facet |
Antarctic Nivea The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice Snow Petrel |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Snow Petrel |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0908-8857 EISSN: 1600-048X Journal of Avian Biology Journal of Avian Biology, Wiley, 2001, 32, pp.297-302 |
op_relation |
hal-00192297 10670/1.xyh4k5 https://hal.archives-ouvertes.fr/hal-00192297 |
op_rights |
undefined |
_version_ |
1766270138396442624 |