Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea
International audience The relative importance of intrinsic and extrinsic determinants of animal foraging is often difficult to quantify. The most southerly breeding mammal, the Weddell seal, remains in the Antarctic pack-ice year-round. We compared Weddell seals tagged at three geographically and h...
Published in: | Frontiers in Marine Science |
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Main Authors: | , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2021
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Subjects: | |
Online Access: | https://hal.science/hal-03430650 https://hal.science/hal-03430650/document https://hal.science/hal-03430650/file/fmars-08-720335.pdf https://doi.org/10.3389/fmars.2021.720335 |
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ftceafr:oai:HAL:hal-03430650v1 |
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Open Polar |
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HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
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ftceafr |
language |
English |
topic |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
spellingShingle |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] Harcourt, Rob Hindell, Mark A. Mcmahon, Clive R. Goetz, Kimberly T. Charrassin, Jean-Benoit Heerah, Karine Holser, Rachel Jonsen, Ian D. Shero, Michelle R. Hoenner, Xavier Foster, Rose Lenting, Baukje Tarszisz, Esther Pinkerton, Matthew Harry Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea |
topic_facet |
[PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] |
description |
International audience The relative importance of intrinsic and extrinsic determinants of animal foraging is often difficult to quantify. The most southerly breeding mammal, the Weddell seal, remains in the Antarctic pack-ice year-round. We compared Weddell seals tagged at three geographically and hydrographically distinct locations in East Antarctica (Prydz Bay, Terre Adélie , and the Ross Sea) to quantify the role of individual variability and habitat structure in winter foraging behaviour. Most Weddell seals remained in relatively small areas close to the coast throughout the winter, but some dispersed widely. Individual utilisation distributions ( UDi , a measure of the total area used by an individual seal) ranged from 125 to 20,825 km 2 . This variability was not due to size or sex but may be due to other intrinsic states for example reproductive condition or personality. The type of foraging (benthic vs. pelagic) varied from 56.6 ± 14.9% benthic dives in Prydz Bay through 42.1 ± 9.4% Terre Adélie to only 25.1 ± 8.7% in the Ross Sea reflecting regional hydrographic structure. The probability of benthic diving was less likely the deeper the ocean. Ocean topography was also influential at the population level; seals from Terre Adélie , with its relatively narrow continental shelf, had a core (50%) UD of only 200 km 2 , considerably smaller than the Ross Sea (1650 km 2 ) and Prydz Bay (1700 km 2 ). Sea ice concentration had little influence on the time the seals spent in shallow coastal waters, but in deeper offshore water they used areas of higher ice concentration. Marine Protected Areas (MPAs) in the Ross Sea encompass all the observed Weddell seal habitat, and future MPAs that include the Antarctic continental shelf are likely to effectively protect key Weddell seal habitat. |
author2 |
Department of Biological Sciences Sydney Macquarie University Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) IMOS Animal Tagging New South Wales, Australia Sydney Institute of Marine Science National Institute of Water and Atmospheric Research Wellington (NIWA) NOAA National Marine Fisheries Service (NMFS) National Oceanic and Atmospheric Administration (NOAA) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Institute of Marine Sciences, Long Marine Laboratory University of California Santa Cruz (UC Santa Cruz) University of California (UC)-University of California (UC) Woods Hole Oceanographic Institution (WHOI) CISRO Oceans and Atmosphere Gateway Antarctica University of Canterbury Christchurch Wellington Zoo |
format |
Article in Journal/Newspaper |
author |
Harcourt, Rob Hindell, Mark A. Mcmahon, Clive R. Goetz, Kimberly T. Charrassin, Jean-Benoit Heerah, Karine Holser, Rachel Jonsen, Ian D. Shero, Michelle R. Hoenner, Xavier Foster, Rose Lenting, Baukje Tarszisz, Esther Pinkerton, Matthew Harry |
author_facet |
Harcourt, Rob Hindell, Mark A. Mcmahon, Clive R. Goetz, Kimberly T. Charrassin, Jean-Benoit Heerah, Karine Holser, Rachel Jonsen, Ian D. Shero, Michelle R. Hoenner, Xavier Foster, Rose Lenting, Baukje Tarszisz, Esther Pinkerton, Matthew Harry |
author_sort |
Harcourt, Rob |
title |
Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea |
title_short |
Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea |
title_full |
Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea |
title_fullStr |
Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea |
title_full_unstemmed |
Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea |
title_sort |
regional variation in winter foraging strategies by weddell seals in eastern antarctica and the ross sea |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03430650 https://hal.science/hal-03430650/document https://hal.science/hal-03430650/file/fmars-08-720335.pdf https://doi.org/10.3389/fmars.2021.720335 |
genre |
Antarc* Antarctic Antarctica East Antarctica Prydz Bay Ross Sea Sea ice Weddell Seal Weddell Seals |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Prydz Bay Ross Sea Sea ice Weddell Seal Weddell Seals |
op_source |
ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-03430650 Frontiers in Marine Science, 2021, 8, pp.720335. ⟨10.3389/fmars.2021.720335⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.720335 hal-03430650 https://hal.science/hal-03430650 https://hal.science/hal-03430650/document https://hal.science/hal-03430650/file/fmars-08-720335.pdf doi:10.3389/fmars.2021.720335 WOS: 000704118500001 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3389/fmars.2021.720335 |
container_title |
Frontiers in Marine Science |
container_volume |
8 |
_version_ |
1810492508419915776 |
spelling |
ftceafr:oai:HAL:hal-03430650v1 2024-09-15T17:44:50+00:00 Regional variation in winter foraging strategies by Weddell seals in Eastern Antarctica and the Ross Sea Harcourt, Rob Hindell, Mark A. Mcmahon, Clive R. Goetz, Kimberly T. Charrassin, Jean-Benoit Heerah, Karine Holser, Rachel Jonsen, Ian D. Shero, Michelle R. Hoenner, Xavier Foster, Rose Lenting, Baukje Tarszisz, Esther Pinkerton, Matthew Harry Department of Biological Sciences Sydney Macquarie University Institute for Marine and Antarctic Studies Hobart (IMAS) University of Tasmania Hobart, Australia (UTAS) IMOS Animal Tagging New South Wales, Australia Sydney Institute of Marine Science National Institute of Water and Atmospheric Research Wellington (NIWA) NOAA National Marine Fisheries Service (NMFS) National Oceanic and Atmospheric Administration (NOAA) Processus et interactions de fine échelle océanique (PROTEO) Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-École normale supérieure - Paris (ENS-PSL) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) 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)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) Institute of Marine Sciences, Long Marine Laboratory University of California Santa Cruz (UC Santa Cruz) University of California (UC)-University of California (UC) Woods Hole Oceanographic Institution (WHOI) CISRO Oceans and Atmosphere Gateway Antarctica University of Canterbury Christchurch Wellington Zoo 2021-09-22 https://hal.science/hal-03430650 https://hal.science/hal-03430650/document https://hal.science/hal-03430650/file/fmars-08-720335.pdf https://doi.org/10.3389/fmars.2021.720335 en eng HAL CCSD Frontiers Media info:eu-repo/semantics/altIdentifier/doi/10.3389/fmars.2021.720335 hal-03430650 https://hal.science/hal-03430650 https://hal.science/hal-03430650/document https://hal.science/hal-03430650/file/fmars-08-720335.pdf doi:10.3389/fmars.2021.720335 WOS: 000704118500001 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2296-7745 Frontiers in Marine Science https://hal.science/hal-03430650 Frontiers in Marine Science, 2021, 8, pp.720335. ⟨10.3389/fmars.2021.720335⟩ [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] info:eu-repo/semantics/article Journal articles 2021 ftceafr https://doi.org/10.3389/fmars.2021.720335 2024-07-22T13:13:24Z International audience The relative importance of intrinsic and extrinsic determinants of animal foraging is often difficult to quantify. The most southerly breeding mammal, the Weddell seal, remains in the Antarctic pack-ice year-round. We compared Weddell seals tagged at three geographically and hydrographically distinct locations in East Antarctica (Prydz Bay, Terre Adélie , and the Ross Sea) to quantify the role of individual variability and habitat structure in winter foraging behaviour. Most Weddell seals remained in relatively small areas close to the coast throughout the winter, but some dispersed widely. Individual utilisation distributions ( UDi , a measure of the total area used by an individual seal) ranged from 125 to 20,825 km 2 . This variability was not due to size or sex but may be due to other intrinsic states for example reproductive condition or personality. The type of foraging (benthic vs. pelagic) varied from 56.6 ± 14.9% benthic dives in Prydz Bay through 42.1 ± 9.4% Terre Adélie to only 25.1 ± 8.7% in the Ross Sea reflecting regional hydrographic structure. The probability of benthic diving was less likely the deeper the ocean. Ocean topography was also influential at the population level; seals from Terre Adélie , with its relatively narrow continental shelf, had a core (50%) UD of only 200 km 2 , considerably smaller than the Ross Sea (1650 km 2 ) and Prydz Bay (1700 km 2 ). Sea ice concentration had little influence on the time the seals spent in shallow coastal waters, but in deeper offshore water they used areas of higher ice concentration. Marine Protected Areas (MPAs) in the Ross Sea encompass all the observed Weddell seal habitat, and future MPAs that include the Antarctic continental shelf are likely to effectively protect key Weddell seal habitat. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Prydz Bay Ross Sea Sea ice Weddell Seal Weddell Seals HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Frontiers in Marine Science 8 |