Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross
International audience Many seabird populations are currently decreasing, especially albatrosses for which the primary threat is recognised to be mortality in fisheries. Introduced predators, climate change and other factors such as diseases can also have large impacts on seabirds. Here, we assessed...
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fttriple:oai:gotriple.eu:10670/1.jv2r6p 2023-05-15T13:22:27+02:00 Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross Rolland, Virginie Barbraud, Christophe Weimerskirch, Henri Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) 2009-02-25 https://doi.org/10.1016/j.biocon.2008.12.030 https://hal.archives-ouvertes.fr/hal-00368728 en eng HAL CCSD Elsevier hal-00368728 doi:10.1016/j.biocon.2008.12.030 10670/1.jv2r6p https://hal.archives-ouvertes.fr/hal-00368728 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0006-3207 Biological Conservation Biological Conservation, Elsevier, 2009, 142, pp.1084-1095. ⟨10.1016/j.biocon.2008.12.030⟩ Longlining Population modelling Yellow-nosed albatross Immigration Climate Disease envir socio Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2009 fttriple https://doi.org/10.1016/j.biocon.2008.12.030 2023-01-22T17:45:45Z International audience Many seabird populations are currently decreasing, especially albatrosses for which the primary threat is recognised to be mortality in fisheries. Introduced predators, climate change and other factors such as diseases can also have large impacts on seabirds. Here, we assessed the relative effect of three potential threats: climate, fisheries and diseases on the demography of an endangered marine predator and modelled its population dynamics to project its size under different scenarios. We based our study on a longterm monitoring of a colony of individually marked Indian yellow-nosed albatrosses at Amsterdam Island, subtropical Indian Ocean, that has declined during the past twenty years. We found no evidence for an impact of legal tuna longlining on demographic parameters. Hatching success was lower during El Niño years but survival (0.902 ± 0.011) was not affected by climatic factors. Avian cholera caused high chick mortality (0.808 ± 0.181) which in turn probably triggered the high emigration rate (0.038 ± 0.011) through dispersal of failed breeders. This colony has a high risk of extinction. However, the rest of the population at Amsterdam Island seemingly not affected to the same extent, declined but stabilised since 1998. Matrix models indicated that lowered adult survival and the very low breeding success, resulting in low recruitment, have both contributed to the decline of the yellow-nosed albatross colony until the mid-1990s, but that more recent decline was primarily caused by low fledging success. Our results highlight that potential threats such as fisheries, diseases or climate have to be considered simultaneously to disentangle their roles when assessing the conservation status of a marine predator species. Article in Journal/Newspaper Amsterdam Island Unknown Indian Biological Conservation 142 5 1084 1095 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Longlining Population modelling Yellow-nosed albatross Immigration Climate Disease envir socio |
spellingShingle |
Longlining Population modelling Yellow-nosed albatross Immigration Climate Disease envir socio Rolland, Virginie Barbraud, Christophe Weimerskirch, Henri Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross |
topic_facet |
Longlining Population modelling Yellow-nosed albatross Immigration Climate Disease envir socio |
description |
International audience Many seabird populations are currently decreasing, especially albatrosses for which the primary threat is recognised to be mortality in fisheries. Introduced predators, climate change and other factors such as diseases can also have large impacts on seabirds. Here, we assessed the relative effect of three potential threats: climate, fisheries and diseases on the demography of an endangered marine predator and modelled its population dynamics to project its size under different scenarios. We based our study on a longterm monitoring of a colony of individually marked Indian yellow-nosed albatrosses at Amsterdam Island, subtropical Indian Ocean, that has declined during the past twenty years. We found no evidence for an impact of legal tuna longlining on demographic parameters. Hatching success was lower during El Niño years but survival (0.902 ± 0.011) was not affected by climatic factors. Avian cholera caused high chick mortality (0.808 ± 0.181) which in turn probably triggered the high emigration rate (0.038 ± 0.011) through dispersal of failed breeders. This colony has a high risk of extinction. However, the rest of the population at Amsterdam Island seemingly not affected to the same extent, declined but stabilised since 1998. Matrix models indicated that lowered adult survival and the very low breeding success, resulting in low recruitment, have both contributed to the decline of the yellow-nosed albatross colony until the mid-1990s, but that more recent decline was primarily caused by low fledging success. Our results highlight that potential threats such as fisheries, diseases or climate have to be considered simultaneously to disentangle their roles when assessing the conservation status of a marine predator species. |
author2 |
Centre d'études biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Rolland, Virginie Barbraud, Christophe Weimerskirch, Henri |
author_facet |
Rolland, Virginie Barbraud, Christophe Weimerskirch, Henri |
author_sort |
Rolland, Virginie |
title |
Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross |
title_short |
Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross |
title_full |
Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross |
title_fullStr |
Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross |
title_full_unstemmed |
Assessing the impact of fisheries, climate and disease on the dynamics of the Indian yellow-nosed Albatross |
title_sort |
assessing the impact of fisheries, climate and disease on the dynamics of the indian yellow-nosed albatross |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://doi.org/10.1016/j.biocon.2008.12.030 https://hal.archives-ouvertes.fr/hal-00368728 |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Amsterdam Island |
genre_facet |
Amsterdam Island |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0006-3207 Biological Conservation Biological Conservation, Elsevier, 2009, 142, pp.1084-1095. ⟨10.1016/j.biocon.2008.12.030⟩ |
op_relation |
hal-00368728 doi:10.1016/j.biocon.2008.12.030 10670/1.jv2r6p https://hal.archives-ouvertes.fr/hal-00368728 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1016/j.biocon.2008.12.030 |
container_title |
Biological Conservation |
container_volume |
142 |
container_issue |
5 |
container_start_page |
1084 |
op_container_end_page |
1095 |
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1766364999596376064 |