The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960
Abstract. The timing of life-cycle events crucially influences fitness, particularly in migratory birds, which visit chains of sites with varying seasonality. Here, we used a proportional hazards model to identify local environmental factors, which a long-distance migrant, the Pink-footed Goose (Ans...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.1046.6167 2023-05-15T13:29:56+02:00 The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960 Silke Bauer Phillip Gienapp Jesper Madsen The Pennsylvania State University CiteSeerX Archives 2008 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.6167 en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.6167 Metadata may be used without restrictions as long as the oai identifier remains attached to it. https://pure.knaw.nl/ws/files/484162/Bauer_ea_4212.pdf text 2008 ftciteseerx 2020-04-05T00:19:55Z Abstract. The timing of life-cycle events crucially influences fitness, particularly in migratory birds, which visit chains of sites with varying seasonality. Here, we used a proportional hazards model to identify local environmental factors, which a long-distance migrant, the Pink-footed Goose (Anser brachyrhynchus), uses for departure decisions on multiple sites along its spring flyway from Denmark via Norway to Svalbard. Our results not only identified day length, local accumulated temperature, and their interaction as likely candidates, but also (more importantly) showed for the first time that their relevance changes en route. The results suggest that the birds switch on a ''migratory program'' in their wintering grounds, with day length providing general information on time of the year and integrated temperatures providing information on larger scale climate trends. Thereafter, on the stopover sites, local accumulated temperatures allow the geese to infer information on the advancement of spring, which is then used to adjust the speed of progressing northward. Text Anser brachyrhynchus Pink-footed Goose Svalbard Unknown Norway Svalbard |
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ftciteseerx |
language |
English |
description |
Abstract. The timing of life-cycle events crucially influences fitness, particularly in migratory birds, which visit chains of sites with varying seasonality. Here, we used a proportional hazards model to identify local environmental factors, which a long-distance migrant, the Pink-footed Goose (Anser brachyrhynchus), uses for departure decisions on multiple sites along its spring flyway from Denmark via Norway to Svalbard. Our results not only identified day length, local accumulated temperature, and their interaction as likely candidates, but also (more importantly) showed for the first time that their relevance changes en route. The results suggest that the birds switch on a ''migratory program'' in their wintering grounds, with day length providing general information on time of the year and integrated temperatures providing information on larger scale climate trends. Thereafter, on the stopover sites, local accumulated temperatures allow the geese to infer information on the advancement of spring, which is then used to adjust the speed of progressing northward. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Silke Bauer Phillip Gienapp Jesper Madsen |
spellingShingle |
Silke Bauer Phillip Gienapp Jesper Madsen The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960 |
author_facet |
Silke Bauer Phillip Gienapp Jesper Madsen |
author_sort |
Silke Bauer |
title |
The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960 |
title_short |
The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960 |
title_full |
The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960 |
title_fullStr |
The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960 |
title_full_unstemmed |
The relevance of environmental conditions for departure decision changes en route in migrating geese. Ecology 89: 1953–1960 |
title_sort |
relevance of environmental conditions for departure decision changes en route in migrating geese. ecology 89: 1953–1960 |
publishDate |
2008 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.6167 |
geographic |
Norway Svalbard |
geographic_facet |
Norway Svalbard |
genre |
Anser brachyrhynchus Pink-footed Goose Svalbard |
genre_facet |
Anser brachyrhynchus Pink-footed Goose Svalbard |
op_source |
https://pure.knaw.nl/ws/files/484162/Bauer_ea_4212.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1046.6167 |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766004406632841216 |