Foraging movements of emperor penguins at Pointe Géologie, Antarctica
International audience The foraging distributions of 20 breeding emperor penguins were investigated at Pointe Ge´ologie, Terre Ade´lie, Antarctica by using satellite telemetry in 2005 and 2006 during early and late winter, as well as during late spring and summer, corresponding to incubation, early...
Main Authors: | , , , , , |
---|---|
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2008
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-00357997 |
id |
ftccsdartic:oai:HAL:hal-00357997v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-00357997v1 2023-05-15T14:02:40+02:00 Foraging movements of emperor penguins at Pointe Géologie, Antarctica Zimmer, Ilka Wilson, Rory, Gilbert, Caroline Beaulieu, Michaël Ancel, André Plötz, Joachim Department of Bentho-pelagic processes Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Institute of Environmental Sustainability Swansea University Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) 2008 https://hal.archives-ouvertes.fr/hal-00357997 en eng HAL CCSD Springer Verlag hal-00357997 https://hal.archives-ouvertes.fr/hal-00357997 ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.archives-ouvertes.fr/hal-00357997 Polar Biology, Springer Verlag, 2008, 31, pp.229-243 Foraging distribution Central-place forager Emperor penguin Area-restricted-search Foraging strategies [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] info:eu-repo/semantics/article Journal articles 2008 ftccsdartic 2021-06-13T00:23:10Z International audience The foraging distributions of 20 breeding emperor penguins were investigated at Pointe Ge´ologie, Terre Ade´lie, Antarctica by using satellite telemetry in 2005 and 2006 during early and late winter, as well as during late spring and summer, corresponding to incubation, early chick-brooding, late chick-rearing and the adult pre-moult period, respectively. Dive depth records of three post-egg-laying females, two post-incubating males and four late chick-rearing adults were examined, as well as the horizontal space use by these birds. Foraging ranges of chick-provisioning penguins extended over the Antarctic shelf and were constricted by winter pack-ice. During spring ice break-up, the foraging ranges rarely exceeded the shelf slope, although seawater access was apparently almost unlimited. Winter females appeared constrained in their access to open water but used fissures in the sea ice and expanded their prey search effort by expanding the horizontal search component underwater. Birds in spring however, showed higher area-restricted-search than did birds in winter. Despite different seasonal foraging strategies, chick-rearing penguins exploited similar areas as indicated by both a high ‘Area-Restricted-Search Index' and high ‘Catch Per Unit Effort'. During pre-moult trips, emperor penguins ranged much farther offshore than breeding birds, which argues for particularly profitable oceanic feeding areas which can be exploited when the time constraints imposed by having to return to a central place to provision the chick no longer apply. Article in Journal/Newspaper Antarc* Antarctic Antarctica Emperor penguins Polar Biology Sea ice Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Pointe-Géologie ENVELOPE(140.017,140.017,-66.667,-66.667) The Antarctic |
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 |
Foraging distribution Central-place forager Emperor penguin Area-restricted-search Foraging strategies [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
spellingShingle |
Foraging distribution Central-place forager Emperor penguin Area-restricted-search Foraging strategies [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] Zimmer, Ilka Wilson, Rory, Gilbert, Caroline Beaulieu, Michaël Ancel, André Plötz, Joachim Foraging movements of emperor penguins at Pointe Géologie, Antarctica |
topic_facet |
Foraging distribution Central-place forager Emperor penguin Area-restricted-search Foraging strategies [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] |
description |
International audience The foraging distributions of 20 breeding emperor penguins were investigated at Pointe Ge´ologie, Terre Ade´lie, Antarctica by using satellite telemetry in 2005 and 2006 during early and late winter, as well as during late spring and summer, corresponding to incubation, early chick-brooding, late chick-rearing and the adult pre-moult period, respectively. Dive depth records of three post-egg-laying females, two post-incubating males and four late chick-rearing adults were examined, as well as the horizontal space use by these birds. Foraging ranges of chick-provisioning penguins extended over the Antarctic shelf and were constricted by winter pack-ice. During spring ice break-up, the foraging ranges rarely exceeded the shelf slope, although seawater access was apparently almost unlimited. Winter females appeared constrained in their access to open water but used fissures in the sea ice and expanded their prey search effort by expanding the horizontal search component underwater. Birds in spring however, showed higher area-restricted-search than did birds in winter. Despite different seasonal foraging strategies, chick-rearing penguins exploited similar areas as indicated by both a high ‘Area-Restricted-Search Index' and high ‘Catch Per Unit Effort'. During pre-moult trips, emperor penguins ranged much farther offshore than breeding birds, which argues for particularly profitable oceanic feeding areas which can be exploited when the time constraints imposed by having to return to a central place to provision the chick no longer apply. |
author2 |
Department of Bentho-pelagic processes Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung (AWI) Institute of Environmental Sustainability Swansea University Département Ecologie, Physiologie et Ethologie (DEPE-IPHC) Institut Pluridisciplinaire Hubert Curien (IPHC) Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)-Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Zimmer, Ilka Wilson, Rory, Gilbert, Caroline Beaulieu, Michaël Ancel, André Plötz, Joachim |
author_facet |
Zimmer, Ilka Wilson, Rory, Gilbert, Caroline Beaulieu, Michaël Ancel, André Plötz, Joachim |
author_sort |
Zimmer, Ilka |
title |
Foraging movements of emperor penguins at Pointe Géologie, Antarctica |
title_short |
Foraging movements of emperor penguins at Pointe Géologie, Antarctica |
title_full |
Foraging movements of emperor penguins at Pointe Géologie, Antarctica |
title_fullStr |
Foraging movements of emperor penguins at Pointe Géologie, Antarctica |
title_full_unstemmed |
Foraging movements of emperor penguins at Pointe Géologie, Antarctica |
title_sort |
foraging movements of emperor penguins at pointe géologie, antarctica |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.archives-ouvertes.fr/hal-00357997 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) |
geographic |
Antarctic Pointe-Géologie The Antarctic |
geographic_facet |
Antarctic Pointe-Géologie The Antarctic |
genre |
Antarc* Antarctic Antarctica Emperor penguins Polar Biology Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Emperor penguins Polar Biology Sea ice |
op_source |
ISSN: 0722-4060 EISSN: 1432-2056 Polar Biology https://hal.archives-ouvertes.fr/hal-00357997 Polar Biology, Springer Verlag, 2008, 31, pp.229-243 |
op_relation |
hal-00357997 https://hal.archives-ouvertes.fr/hal-00357997 |
_version_ |
1766273020756754432 |