Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands"
Changes in the foraging environment and at-sea distribution of southern elephant seals from Kerguelen Islands were investigated over a decade (2004–2018) using tracking, weaning mass and blood δ 13 C values. Females showed either a sub-Antarctic or an Antarctic foraging strategy, and no significant...
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ftdatacite:10.6084/m9.figshare.c.5082874 2023-05-15T13:51:37+02:00 Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands" Mestre, Julie Authier, Matthieu Cherel, Yves Harcourt, Rob McMahon, Clive R. Hindell, Mark A. Jean-Benoît Charrassin Guinet, Christophe 2020 https://dx.doi.org/10.6084/m9.figshare.c.5082874 https://rs.figshare.com/collections/Supplementary_material_from_Decadal_changes_in_blood_sup_13_sup_C_values_at-sea_distribution_and_weaning_mass_of_southern_elephant_seals_from_Kerguelen_Islands_/5082874 unknown The Royal Society https://dx.doi.org/10.1098/rspb.2020.1544 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Environmental Science Ecology FOS Biological sciences 60801 Animal Behaviour Collection article 2020 ftdatacite https://doi.org/10.6084/m9.figshare.c.5082874 https://doi.org/10.1098/rspb.2020.1544 2021-11-05T12:55:41Z Changes in the foraging environment and at-sea distribution of southern elephant seals from Kerguelen Islands were investigated over a decade (2004–2018) using tracking, weaning mass and blood δ 13 C values. Females showed either a sub-Antarctic or an Antarctic foraging strategy, and no significant shift in their at-sea distribution was detected between 2004 and 2017. The proportion of females foraging in sub-Antarctic versus Antarctic habitats did not change over the 2006–2018 period. Pup weaning mass varied according to the foraging habitat of their mothers. The weaning mass of sub-Antarctic foraging mothers' pups decreased by 11.7 kg over the study period, but they were on average 5.8 kg heavier than pups from Antarctic foraging mothers. Pup blood δ 13 C values decreased by 1.1‰ over the study period regardless of their sex and the presumed foraging habitat of their mothers. Together, these results suggest an ecological change is occurring within the Indian sector of the Southern Ocean with possible consequences on the foraging performance of southern elephant seals. We hypothesize that this shift in δ 13 C is related to a change in primary production and/or in the composition of phytoplankton communities, but this requires further multidisciplinary investigations. Article in Journal/Newspaper Antarc* Antarctic Elephant Seals Kerguelen Islands Southern Elephant Seals Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Environmental Science Ecology FOS Biological sciences 60801 Animal Behaviour |
spellingShingle |
Environmental Science Ecology FOS Biological sciences 60801 Animal Behaviour Mestre, Julie Authier, Matthieu Cherel, Yves Harcourt, Rob McMahon, Clive R. Hindell, Mark A. Jean-Benoît Charrassin Guinet, Christophe Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands" |
topic_facet |
Environmental Science Ecology FOS Biological sciences 60801 Animal Behaviour |
description |
Changes in the foraging environment and at-sea distribution of southern elephant seals from Kerguelen Islands were investigated over a decade (2004–2018) using tracking, weaning mass and blood δ 13 C values. Females showed either a sub-Antarctic or an Antarctic foraging strategy, and no significant shift in their at-sea distribution was detected between 2004 and 2017. The proportion of females foraging in sub-Antarctic versus Antarctic habitats did not change over the 2006–2018 period. Pup weaning mass varied according to the foraging habitat of their mothers. The weaning mass of sub-Antarctic foraging mothers' pups decreased by 11.7 kg over the study period, but they were on average 5.8 kg heavier than pups from Antarctic foraging mothers. Pup blood δ 13 C values decreased by 1.1‰ over the study period regardless of their sex and the presumed foraging habitat of their mothers. Together, these results suggest an ecological change is occurring within the Indian sector of the Southern Ocean with possible consequences on the foraging performance of southern elephant seals. We hypothesize that this shift in δ 13 C is related to a change in primary production and/or in the composition of phytoplankton communities, but this requires further multidisciplinary investigations. |
format |
Article in Journal/Newspaper |
author |
Mestre, Julie Authier, Matthieu Cherel, Yves Harcourt, Rob McMahon, Clive R. Hindell, Mark A. Jean-Benoît Charrassin Guinet, Christophe |
author_facet |
Mestre, Julie Authier, Matthieu Cherel, Yves Harcourt, Rob McMahon, Clive R. Hindell, Mark A. Jean-Benoît Charrassin Guinet, Christophe |
author_sort |
Mestre, Julie |
title |
Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands" |
title_short |
Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands" |
title_full |
Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands" |
title_fullStr |
Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands" |
title_full_unstemmed |
Supplementary material from "Decadal changes in blood δ 13 C values, at-sea distribution, and weaning mass of southern elephant seals from Kerguelen Islands" |
title_sort |
supplementary material from "decadal changes in blood δ 13 c values, at-sea distribution, and weaning mass of southern elephant seals from kerguelen islands" |
publisher |
The Royal Society |
publishDate |
2020 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5082874 https://rs.figshare.com/collections/Supplementary_material_from_Decadal_changes_in_blood_sup_13_sup_C_values_at-sea_distribution_and_weaning_mass_of_southern_elephant_seals_from_Kerguelen_Islands_/5082874 |
geographic |
Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian |
geographic_facet |
Antarctic Southern Ocean Kerguelen Kerguelen Islands Indian |
genre |
Antarc* Antarctic Elephant Seals Kerguelen Islands Southern Elephant Seals Southern Ocean |
genre_facet |
Antarc* Antarctic Elephant Seals Kerguelen Islands Southern Elephant Seals Southern Ocean |
op_relation |
https://dx.doi.org/10.1098/rspb.2020.1544 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5082874 https://doi.org/10.1098/rspb.2020.1544 |
_version_ |
1766255593581969408 |