Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony
Capsule The presence of avian cholera depressed annual survival of female Common Eiders in a Danish colony. Aims To estimate the annual survival of adult female Common Eiders in the colony of Helleholm, Denmark, and evaluate the effect of winter temperature and avian cholera on survival. Methods Bre...
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Online Access: | https://pure.au.dk/portal/da/publications/impacts-of-avian-cholera-on-survival-of-common-eiders-somateria-mollissima-in-a-danish-colony(ef5ddf52-9026-48af-b980-7fd5ae2180b3).html https://doi.org/10.1080/00063657.2013.798261 http://www.scopus.com/inward/record.url?scp=84878307814&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/ef5ddf52-9026-48af-b980-7fd5ae2180b3 2023-05-15T18:20:26+02:00 Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony Tjørnløv, Rune Skjold Humaidan, Jakob Frederiksen, M. 2013-01-01 https://pure.au.dk/portal/da/publications/impacts-of-avian-cholera-on-survival-of-common-eiders-somateria-mollissima-in-a-danish-colony(ef5ddf52-9026-48af-b980-7fd5ae2180b3).html https://doi.org/10.1080/00063657.2013.798261 http://www.scopus.com/inward/record.url?scp=84878307814&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Tjørnløv , R S , Humaidan , J & Frederiksen , M 2013 , ' Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony ' , Bird Study , vol. 60 , pp. 321-326 . https://doi.org/10.1080/00063657.2013.798261 article 2013 ftuniaarhuspubl https://doi.org/10.1080/00063657.2013.798261 2020-07-18T21:26:44Z Capsule The presence of avian cholera depressed annual survival of female Common Eiders in a Danish colony. Aims To estimate the annual survival of adult female Common Eiders in the colony of Helleholm, Denmark, and evaluate the effect of winter temperature and avian cholera on survival. Methods Breeding females were captured and ringed during one-day visits to the colony 1998-2012. Goodness-of-fit was tested using u-care 2.3.2, and annual survival probabilities were estimated in program mark 6.1. We tested for effects of covariates (winter temperature and avian cholera) on survival. Results Goodness-of-fit tests indicated the presence of transient breeders (23%). We estimated a mean survival of 0.884 (95% CI 0.859, 0.905) after the first year. Winter temperature had no significant effect on survival, whereas the effect of avian cholera was significant and accounted for a 14 percentage-point decrease in the annual survival (from 0.922 to 0.781). Conclusion We found a relatively constant survival of female Common Eiders in the colony of Helleholm, at a level consistent with other studies. Years with low adult survival coincided with outbreaks of avian cholera. Hence, epidemic disease, rather than winter temperature, seemed to negatively affect the adult female survival in the study colony. Article in Journal/Newspaper Somateria mollissima Aarhus University: Research Bird Study 60 3 321 326 |
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Aarhus University: Research |
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English |
description |
Capsule The presence of avian cholera depressed annual survival of female Common Eiders in a Danish colony. Aims To estimate the annual survival of adult female Common Eiders in the colony of Helleholm, Denmark, and evaluate the effect of winter temperature and avian cholera on survival. Methods Breeding females were captured and ringed during one-day visits to the colony 1998-2012. Goodness-of-fit was tested using u-care 2.3.2, and annual survival probabilities were estimated in program mark 6.1. We tested for effects of covariates (winter temperature and avian cholera) on survival. Results Goodness-of-fit tests indicated the presence of transient breeders (23%). We estimated a mean survival of 0.884 (95% CI 0.859, 0.905) after the first year. Winter temperature had no significant effect on survival, whereas the effect of avian cholera was significant and accounted for a 14 percentage-point decrease in the annual survival (from 0.922 to 0.781). Conclusion We found a relatively constant survival of female Common Eiders in the colony of Helleholm, at a level consistent with other studies. Years with low adult survival coincided with outbreaks of avian cholera. Hence, epidemic disease, rather than winter temperature, seemed to negatively affect the adult female survival in the study colony. |
format |
Article in Journal/Newspaper |
author |
Tjørnløv, Rune Skjold Humaidan, Jakob Frederiksen, M. |
spellingShingle |
Tjørnløv, Rune Skjold Humaidan, Jakob Frederiksen, M. Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony |
author_facet |
Tjørnløv, Rune Skjold Humaidan, Jakob Frederiksen, M. |
author_sort |
Tjørnløv, Rune Skjold |
title |
Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony |
title_short |
Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony |
title_full |
Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony |
title_fullStr |
Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony |
title_full_unstemmed |
Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony |
title_sort |
impacts of avian cholera on survival of common eiders somateria mollissima in a danish colony |
publishDate |
2013 |
url |
https://pure.au.dk/portal/da/publications/impacts-of-avian-cholera-on-survival-of-common-eiders-somateria-mollissima-in-a-danish-colony(ef5ddf52-9026-48af-b980-7fd5ae2180b3).html https://doi.org/10.1080/00063657.2013.798261 http://www.scopus.com/inward/record.url?scp=84878307814&partnerID=8YFLogxK |
genre |
Somateria mollissima |
genre_facet |
Somateria mollissima |
op_source |
Tjørnløv , R S , Humaidan , J & Frederiksen , M 2013 , ' Impacts of avian cholera on survival of Common Eiders Somateria mollissima in a Danish colony ' , Bird Study , vol. 60 , pp. 321-326 . https://doi.org/10.1080/00063657.2013.798261 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1080/00063657.2013.798261 |
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Bird Study |
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60 |
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3 |
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321 |
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326 |
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