Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF
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 distinc...
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Online Access: | https://doi.org/10.3389/fmars.2021.720335.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Regional_Variation_in_Winter_Foraging_Strategies_by_Weddell_Seals_in_Eastern_Antarctica_and_the_Ross_Sea_PDF/16660738 |
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ftfrontimediafig:oai:figshare.com:article/16660738 2023-05-15T13:57:38+02:00 Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF Rob Harcourt Mark A. Hindell Clive R. McMahon Kimberly T. Goetz Jean-Benoit Charrassin Karine Heerah Rachel Holser Ian D. Jonsen Michelle R. Shero Xavier Hoenner Rose Foster Baukje Lenting Esther Tarszisz Matthew Harry Pinkerton 2021-09-22T13:37:46Z https://doi.org/10.3389/fmars.2021.720335.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Regional_Variation_in_Winter_Foraging_Strategies_by_Weddell_Seals_in_Eastern_Antarctica_and_the_Ross_Sea_PDF/16660738 unknown doi:10.3389/fmars.2021.720335.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Regional_Variation_in_Winter_Foraging_Strategies_by_Weddell_Seals_in_Eastern_Antarctica_and_the_Ross_Sea_PDF/16660738 CC BY 4.0 CC-BY Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering marine protected areas Antarctica marine ecosystems bathymetry ecosystem monitoring Weddell seals Dataset 2021 ftfrontimediafig https://doi.org/10.3389/fmars.2021.720335.s001 2021-09-22T22:58:23Z 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. Dataset Antarc* Antarctic Antarctica East Antarctica Prydz Bay Ross Sea Sea ice Weddell Seal Weddell Seals Frontiers: Figshare Antarctic East Antarctica Prydz Bay Ross Sea Terre Adélie ENVELOPE(139.000,139.000,-67.000,-67.000) Terre-Adélie ENVELOPE(138.991,138.991,-59.999,-59.999) The Antarctic Weddell |
institution |
Open Polar |
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Frontiers: Figshare |
op_collection_id |
ftfrontimediafig |
language |
unknown |
topic |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering marine protected areas Antarctica marine ecosystems bathymetry ecosystem monitoring Weddell seals |
spellingShingle |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering marine protected areas Antarctica marine ecosystems bathymetry ecosystem monitoring Weddell seals Rob Harcourt Mark A. Hindell Clive R. McMahon Kimberly T. Goetz Jean-Benoit Charrassin Karine Heerah Rachel Holser Ian D. Jonsen Michelle R. Shero Xavier Hoenner Rose Foster Baukje Lenting Esther Tarszisz Matthew Harry Pinkerton Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF |
topic_facet |
Oceanography Marine Biology Marine Geoscience Biological Oceanography Chemical Oceanography Physical Oceanography Marine Engineering marine protected areas Antarctica marine ecosystems bathymetry ecosystem monitoring Weddell seals |
description |
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. |
format |
Dataset |
author |
Rob Harcourt Mark A. Hindell Clive R. McMahon Kimberly T. Goetz Jean-Benoit Charrassin Karine Heerah Rachel Holser Ian D. Jonsen Michelle R. Shero Xavier Hoenner Rose Foster Baukje Lenting Esther Tarszisz Matthew Harry Pinkerton |
author_facet |
Rob Harcourt Mark A. Hindell Clive R. McMahon Kimberly T. Goetz Jean-Benoit Charrassin Karine Heerah Rachel Holser Ian D. Jonsen Michelle R. Shero Xavier Hoenner Rose Foster Baukje Lenting Esther Tarszisz Matthew Harry Pinkerton |
author_sort |
Rob Harcourt |
title |
Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF |
title_short |
Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF |
title_full |
Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF |
title_fullStr |
Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF |
title_full_unstemmed |
Data_Sheet_1_Regional Variation in Winter Foraging Strategies by Weddell Seals in Eastern Antarctica and the Ross Sea.PDF |
title_sort |
data_sheet_1_regional variation in winter foraging strategies by weddell seals in eastern antarctica and the ross sea.pdf |
publishDate |
2021 |
url |
https://doi.org/10.3389/fmars.2021.720335.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Regional_Variation_in_Winter_Foraging_Strategies_by_Weddell_Seals_in_Eastern_Antarctica_and_the_Ross_Sea_PDF/16660738 |
long_lat |
ENVELOPE(139.000,139.000,-67.000,-67.000) ENVELOPE(138.991,138.991,-59.999,-59.999) |
geographic |
Antarctic East Antarctica Prydz Bay Ross Sea Terre Adélie Terre-Adélie The Antarctic Weddell |
geographic_facet |
Antarctic East Antarctica Prydz Bay Ross Sea Terre Adélie Terre-Adélie The Antarctic Weddell |
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_relation |
doi:10.3389/fmars.2021.720335.s001 https://figshare.com/articles/dataset/Data_Sheet_1_Regional_Variation_in_Winter_Foraging_Strategies_by_Weddell_Seals_in_Eastern_Antarctica_and_the_Ross_Sea_PDF/16660738 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fmars.2021.720335.s001 |
_version_ |
1766265360471818240 |