Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus
Adult Pink‐footed Geese Anser brachyrhynchus from the Svalbard breeding population were neck‐banded and resighted in staging and wintering areas outside the breeding season 1990–1999. We estimated annual and seasonal survival using capture–recapture statistical models. Mean annual survival was 0.829...
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crwiley:10.1046/j.1474-919x.2002.00045.x 2024-06-02T07:55:23+00:00 Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus Madsen, Jesper Frederiksen, Morten Ganter, Barbara 2002 http://dx.doi.org/10.1046/j.1474-919x.2002.00045.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1474-919X.2002.00045.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1474-919X.2002.00045.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ibis volume 144, issue 2, page 218-226 ISSN 0019-1019 1474-919X journal-article 2002 crwiley https://doi.org/10.1046/j.1474-919x.2002.00045.x 2024-05-03T11:32:46Z Adult Pink‐footed Geese Anser brachyrhynchus from the Svalbard breeding population were neck‐banded and resighted in staging and wintering areas outside the breeding season 1990–1999. We estimated annual and seasonal survival using capture–recapture statistical models. Mean annual survival was 0.829, declining over the study period from 0.90 to 0.79. The annual cycle was partitioned into three periods: summer (1 April–30 September), including both spring and autumn migration, autumn (1 October–31 December), including most shooting, and winter (1 January–31 March). The parsimonious model selected to describe seasonal survival included a declining trend in summer survival, constant autumn and winter survival with lower survival in the severe winter of 1996, and an additive effect of sex on summer and winter survival. Monthly survival was highest during winter. Decreasing summer survival was the main contributor to the overall decline in annual survival, and was attributed mainly to increasing natural mortality on the breeding grounds. Mean annual survival based on the seasonal survival probabilities was 0.835 for females and 0.805 for males. The effect of sex was most pronounced during summer and remains to be explained. Article in Journal/Newspaper Anser brachyrhynchus Svalbard Wiley Online Library Svalbard Ibis 144 2 218 226 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Adult Pink‐footed Geese Anser brachyrhynchus from the Svalbard breeding population were neck‐banded and resighted in staging and wintering areas outside the breeding season 1990–1999. We estimated annual and seasonal survival using capture–recapture statistical models. Mean annual survival was 0.829, declining over the study period from 0.90 to 0.79. The annual cycle was partitioned into three periods: summer (1 April–30 September), including both spring and autumn migration, autumn (1 October–31 December), including most shooting, and winter (1 January–31 March). The parsimonious model selected to describe seasonal survival included a declining trend in summer survival, constant autumn and winter survival with lower survival in the severe winter of 1996, and an additive effect of sex on summer and winter survival. Monthly survival was highest during winter. Decreasing summer survival was the main contributor to the overall decline in annual survival, and was attributed mainly to increasing natural mortality on the breeding grounds. Mean annual survival based on the seasonal survival probabilities was 0.835 for females and 0.805 for males. The effect of sex was most pronounced during summer and remains to be explained. |
format |
Article in Journal/Newspaper |
author |
Madsen, Jesper Frederiksen, Morten Ganter, Barbara |
spellingShingle |
Madsen, Jesper Frederiksen, Morten Ganter, Barbara Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus |
author_facet |
Madsen, Jesper Frederiksen, Morten Ganter, Barbara |
author_sort |
Madsen, Jesper |
title |
Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus |
title_short |
Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus |
title_full |
Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus |
title_fullStr |
Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus |
title_full_unstemmed |
Trends in annual and seasonal survival of Pink‐footed Geese Anser brachyrhynchus |
title_sort |
trends in annual and seasonal survival of pink‐footed geese anser brachyrhynchus |
publisher |
Wiley |
publishDate |
2002 |
url |
http://dx.doi.org/10.1046/j.1474-919x.2002.00045.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1474-919X.2002.00045.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1474-919X.2002.00045.x |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
Anser brachyrhynchus Svalbard |
genre_facet |
Anser brachyrhynchus Svalbard |
op_source |
Ibis volume 144, issue 2, page 218-226 ISSN 0019-1019 1474-919X |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1474-919x.2002.00045.x |
container_title |
Ibis |
container_volume |
144 |
container_issue |
2 |
container_start_page |
218 |
op_container_end_page |
226 |
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1800748259596042240 |