Contrasting effects of the extent of sea‐ice on the breeding performance of an Antarctic top predator, the Snow Petrel Pagodroma nivea
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...
Published in: | Journal of Avian Biology |
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Language: | English |
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crwiley:10.1111/j.0908-8857.2001.320402.x 2024-06-02T07:58:33+00:00 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 2001 http://dx.doi.org/10.1111/j.0908-8857.2001.320402.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0908-8857.2001.320402.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0908-8857.2001.320402.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Avian Biology volume 32, issue 4, page 297-302 ISSN 0908-8857 1600-048X journal-article 2001 crwiley https://doi.org/10.1111/j.0908-8857.2001.320402.x 2024-05-03T10:53:06Z 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 Wiley Online Library Antarctic Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) The Antarctic Journal of Avian Biology 32 4 297 302 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
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. |
format |
Article in Journal/Newspaper |
author |
Barbraud, Christophe Weimerskirch, Henri |
spellingShingle |
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 |
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 |
Wiley |
publishDate |
2001 |
url |
http://dx.doi.org/10.1111/j.0908-8857.2001.320402.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0908-8857.2001.320402.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0908-8857.2001.320402.x |
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 |
Journal of Avian Biology volume 32, issue 4, page 297-302 ISSN 0908-8857 1600-048X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0908-8857.2001.320402.x |
container_title |
Journal of Avian Biology |
container_volume |
32 |
container_issue |
4 |
container_start_page |
297 |
op_container_end_page |
302 |
_version_ |
1800741930011721728 |