Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins
International audience For land-breeding marine organisms such as seabirds, knowledge about their habitat use has mainly been gained through studies of breeding individuals that are constrained to return frequently to their breeding grounds. In this study we set out to measure whether: a) habitat se...
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Online Access: | https://hal.science/hal-00565640 https://doi.org/10.1017/S0954102010000957 |
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ftccsdartic:oai:HAL:hal-00565640v1 2024-02-11T09:57:34+01:00 Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins Thiebot, Jean-Baptiste Lescroel, Amélie Pinaud, David Trathan, Philip N. Bost, Charles-André Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) 2011 https://hal.science/hal-00565640 https://doi.org/10.1017/S0954102010000957 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102010000957 hal-00565640 https://hal.science/hal-00565640 doi:10.1017/S0954102010000957 Antarctic Science / ANTARCTICA ANTARCTIC SCIENCE https://hal.science/hal-00565640 Antarctic Science / ANTARCTICA ANTARCTIC SCIENCE, 2011, 23 (2), pp.117-126. ⟨10.1017/S0954102010000957⟩ central place foragers ecological niche Iles Kerguelen juvenile winter [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2011 ftccsdartic https://doi.org/10.1017/S0954102010000957 2024-01-27T23:48:24Z International audience For land-breeding marine organisms such as seabirds, knowledge about their habitat use has mainly been gained through studies of breeding individuals that are constrained to return frequently to their breeding grounds. In this study we set out to measure whether: a) habitat selection in the non-breeding period predicts habitat selection in the breeding period, and b) whether breeding individuals concentrated their activity on the closest suitable habitats. Macaroni Eudyptes chrysolophus and gentoo Pygoscelis papua penguins, two marine predators with contrasting foraging strategies, were tracked from the Iles Kerguelen and their habitat selection investigated through Mahalanobis distances factorial analysis. This study presents the first data about gentoo penguins' juvenile dispersal. For both species, results showed 6.9 times larger maximum ranges and up to 12.2 times greater distances travelled during the non-breeding period. Habitat suitability maps suggested both species made similar environmental selections whatever the period. Macaroni penguins targeted pelagic areas beyond the shelf break while gentoo penguins always remained over the shelf. We consider the ecological significance of larger scale movements made outside the breeding period and suggest that this non-breeding period is of particular interest when attempting to understand an animal's habitat selection. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Eudyptes chrysolophus Pygoscelis papua Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Kerguelen Antarctic Science 23 2 117 126 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
central place foragers ecological niche Iles Kerguelen juvenile winter [SDE]Environmental Sciences |
spellingShingle |
central place foragers ecological niche Iles Kerguelen juvenile winter [SDE]Environmental Sciences Thiebot, Jean-Baptiste Lescroel, Amélie Pinaud, David Trathan, Philip N. Bost, Charles-André Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins |
topic_facet |
central place foragers ecological niche Iles Kerguelen juvenile winter [SDE]Environmental Sciences |
description |
International audience For land-breeding marine organisms such as seabirds, knowledge about their habitat use has mainly been gained through studies of breeding individuals that are constrained to return frequently to their breeding grounds. In this study we set out to measure whether: a) habitat selection in the non-breeding period predicts habitat selection in the breeding period, and b) whether breeding individuals concentrated their activity on the closest suitable habitats. Macaroni Eudyptes chrysolophus and gentoo Pygoscelis papua penguins, two marine predators with contrasting foraging strategies, were tracked from the Iles Kerguelen and their habitat selection investigated through Mahalanobis distances factorial analysis. This study presents the first data about gentoo penguins' juvenile dispersal. For both species, results showed 6.9 times larger maximum ranges and up to 12.2 times greater distances travelled during the non-breeding period. Habitat suitability maps suggested both species made similar environmental selections whatever the period. Macaroni penguins targeted pelagic areas beyond the shelf break while gentoo penguins always remained over the shelf. We consider the ecological significance of larger scale movements made outside the breeding period and suggest that this non-breeding period is of particular interest when attempting to understand an animal's habitat selection. |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) |
format |
Article in Journal/Newspaper |
author |
Thiebot, Jean-Baptiste Lescroel, Amélie Pinaud, David Trathan, Philip N. Bost, Charles-André |
author_facet |
Thiebot, Jean-Baptiste Lescroel, Amélie Pinaud, David Trathan, Philip N. Bost, Charles-André |
author_sort |
Thiebot, Jean-Baptiste |
title |
Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins |
title_short |
Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins |
title_full |
Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins |
title_fullStr |
Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins |
title_full_unstemmed |
Larger foraging range but similar habitat selection in non-breeding versus breeding sub-Antarctic penguins |
title_sort |
larger foraging range but similar habitat selection in non-breeding versus breeding sub-antarctic penguins |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00565640 https://doi.org/10.1017/S0954102010000957 |
geographic |
Antarctic Kerguelen |
geographic_facet |
Antarctic Kerguelen |
genre |
Antarc* Antarctic Antarctic Science Eudyptes chrysolophus Pygoscelis papua |
genre_facet |
Antarc* Antarctic Antarctic Science Eudyptes chrysolophus Pygoscelis papua |
op_source |
Antarctic Science / ANTARCTICA ANTARCTIC SCIENCE https://hal.science/hal-00565640 Antarctic Science / ANTARCTICA ANTARCTIC SCIENCE, 2011, 23 (2), pp.117-126. ⟨10.1017/S0954102010000957⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/S0954102010000957 hal-00565640 https://hal.science/hal-00565640 doi:10.1017/S0954102010000957 |
op_doi |
https://doi.org/10.1017/S0954102010000957 |
container_title |
Antarctic Science |
container_volume |
23 |
container_issue |
2 |
container_start_page |
117 |
op_container_end_page |
126 |
_version_ |
1790593104150003712 |