Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour
International audience Studying the foraging strategies of top predators can provide information on both how animals interact with their environment and the distribution of their prey. We studied the winter foraging behaviour of Weddell seals in Adélie Land, East Antarctica, and the influence of abi...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://doi.org/10.1016/J.DSR2.2012.08.025 https://hal.archives-ouvertes.fr/hal-00824363 |
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English |
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envir geo |
spellingShingle |
envir geo Heerah, Karine Andrews-Goff, Virginia Williams, Guy Darvall Sultan, Emmanuelle Hindell, Mark A. Patterson, Toby Charrassin, Jean-Benoît Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour |
topic_facet |
envir geo |
description |
International audience Studying the foraging strategies of top predators can provide information on both how animals interact with their environment and the distribution of their prey. We studied the winter foraging behaviour of Weddell seals in Adélie Land, East Antarctica, and the influence of abiotic parameters (bathymetry, hydrology, sea ice, light intensity) on their foraging behaviour. A total of six seals were fitted with Conductivity Temperature Depth Satellite Relayed Data Loggers (CTD-SRDL) at Dumont D'Urville (∼67°S, 140°E) during the austral winters in 2007 and 2008. The tags transmitted positions and dive information over 169±31 day, providing a total of 20,400 dive profiles and 2350 CTD profiles. Significant environmental influences on seal diving behaviour and habitat use were detected. Seals dived deeper, longer and increased their foraging effort during the day than at night with intermediate values for twilight. During the winter season the maximum dive depth decreased in association with an increase in dive duration, but foraging effort was unchanged. Seals spent more time at the bottom of their dives in shallow waters associated with relatively smooth bathymetry and dominated by Antarctic Surface Water. Considering the whole winter, Weddell seals tended to favour enriched, warmer and less dense water masses following their seasonal appearance on the shelf (Antarctic Surface Water and Modified Circumpolar Deep Water). Our results are consistent with seals feeding primarily on Pleuragramma antarcticum during winter, tracking their vertical diel migrations and foraging in areas associated with bathymetric and hydrographic features likely to concentrate prey patches. |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Ingéneurie et calcul scientifique (INCAS) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Institute for Marine and Antarctic Studies Horbat (IMAS) University of Tasmania Hobart, Australia (UTAS) Couplage physique-biogéochimie-carbone (PHYBIOCAR) |
format |
Article in Journal/Newspaper |
author |
Heerah, Karine Andrews-Goff, Virginia Williams, Guy Darvall Sultan, Emmanuelle Hindell, Mark A. Patterson, Toby Charrassin, Jean-Benoît |
author_facet |
Heerah, Karine Andrews-Goff, Virginia Williams, Guy Darvall Sultan, Emmanuelle Hindell, Mark A. Patterson, Toby Charrassin, Jean-Benoît |
author_sort |
Heerah, Karine |
title |
Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour |
title_short |
Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour |
title_full |
Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour |
title_fullStr |
Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour |
title_full_unstemmed |
Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour |
title_sort |
ecology of weddell seals during winter: influence of environmental parameters on their foraging behaviour |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://doi.org/10.1016/J.DSR2.2012.08.025 https://hal.archives-ouvertes.fr/hal-00824363 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) |
geographic |
Antarctic Austral Dumont d'Urville Dumont-d'Urville East Antarctica Weddell |
geographic_facet |
Antarctic Austral Dumont d'Urville Dumont-d'Urville East Antarctica Weddell |
genre |
Antarc* Antarctic Antarctica East Antarctica Sea ice Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Sea ice Weddell Seals |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography Deep Sea Research Part II: Topical Studies in Oceanography, Elsevier, 2013, 88, pp.23-33. ⟨10.1016/J.DSR2.2012.08.025⟩ |
op_relation |
hal-00824363 BIBCODE: 2013DSR.88.23H doi:10.1016/J.DSR2.2012.08.025 WOS: 000317636400004 10670/1.vbpyhq https://hal.archives-ouvertes.fr/hal-00824363 |
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op_doi |
https://doi.org/10.1016/J.DSR2.2012.08.025 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
88-89 |
container_start_page |
23 |
op_container_end_page |
33 |
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1766069241145982976 |
spelling |
fttriple:oai:gotriple.eu:10670/1.vbpyhq 2023-05-15T13:35:43+02:00 Ecology of Weddell seals during winter: Influence of environmental parameters on their foraging behaviour Heerah, Karine Andrews-Goff, Virginia Williams, Guy Darvall Sultan, Emmanuelle Hindell, Mark A. Patterson, Toby Charrassin, Jean-Benoît Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Ingéneurie et calcul scientifique (INCAS) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) Institute for Marine and Antarctic Studies Horbat (IMAS) University of Tasmania Hobart, Australia (UTAS) Couplage physique-biogéochimie-carbone (PHYBIOCAR) 2013-04-01 https://doi.org/10.1016/J.DSR2.2012.08.025 https://hal.archives-ouvertes.fr/hal-00824363 en eng HAL CCSD Elsevier hal-00824363 BIBCODE: 2013DSR.88.23H doi:10.1016/J.DSR2.2012.08.025 WOS: 000317636400004 10670/1.vbpyhq https://hal.archives-ouvertes.fr/hal-00824363 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography Deep Sea Research Part II: Topical Studies in Oceanography, Elsevier, 2013, 88, pp.23-33. ⟨10.1016/J.DSR2.2012.08.025⟩ envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2013 fttriple https://doi.org/10.1016/J.DSR2.2012.08.025 2023-01-22T16:58:42Z International audience Studying the foraging strategies of top predators can provide information on both how animals interact with their environment and the distribution of their prey. We studied the winter foraging behaviour of Weddell seals in Adélie Land, East Antarctica, and the influence of abiotic parameters (bathymetry, hydrology, sea ice, light intensity) on their foraging behaviour. A total of six seals were fitted with Conductivity Temperature Depth Satellite Relayed Data Loggers (CTD-SRDL) at Dumont D'Urville (∼67°S, 140°E) during the austral winters in 2007 and 2008. The tags transmitted positions and dive information over 169±31 day, providing a total of 20,400 dive profiles and 2350 CTD profiles. Significant environmental influences on seal diving behaviour and habitat use were detected. Seals dived deeper, longer and increased their foraging effort during the day than at night with intermediate values for twilight. During the winter season the maximum dive depth decreased in association with an increase in dive duration, but foraging effort was unchanged. Seals spent more time at the bottom of their dives in shallow waters associated with relatively smooth bathymetry and dominated by Antarctic Surface Water. Considering the whole winter, Weddell seals tended to favour enriched, warmer and less dense water masses following their seasonal appearance on the shelf (Antarctic Surface Water and Modified Circumpolar Deep Water). Our results are consistent with seals feeding primarily on Pleuragramma antarcticum during winter, tracking their vertical diel migrations and foraging in areas associated with bathymetric and hydrographic features likely to concentrate prey patches. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Sea ice Weddell Seals Unknown Antarctic Austral Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) East Antarctica Weddell Deep Sea Research Part II: Topical Studies in Oceanography 88-89 23 33 |