Cargando…

Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica

Antarctic coastal polynyas are regions of persistent open water and are thought to be key bio-physical features within the sea-ice zone. However, their use by the upper trophic levels of ecosystems remains unclear. A unique bio-physical dataset recorded by southern elephant seals reveals that East A...

Descripción completa

Detalles Bibliográficos
Autores principales: Labrousse, Sara, Williams, Guy, Tamura, Takeshi, Bestley, Sophie, Sallée, Jean-Baptiste, Fraser, Alexander D., Sumner, Michael, Roquet, Fabien, Heerah, Karine, Picard, Baptiste, Guinet, Christophe, Harcourt, Robert, McMahon, Clive, Hindell, Mark A., Charrassin, Jean-Benoit
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5816617/
https://www.ncbi.nlm.nih.gov/pubmed/29453356
http://dx.doi.org/10.1038/s41598-018-21388-9
_version_ 1783300717015990272
author Labrousse, Sara
Williams, Guy
Tamura, Takeshi
Bestley, Sophie
Sallée, Jean-Baptiste
Fraser, Alexander D.
Sumner, Michael
Roquet, Fabien
Heerah, Karine
Picard, Baptiste
Guinet, Christophe
Harcourt, Robert
McMahon, Clive
Hindell, Mark A.
Charrassin, Jean-Benoit
author_facet Labrousse, Sara
Williams, Guy
Tamura, Takeshi
Bestley, Sophie
Sallée, Jean-Baptiste
Fraser, Alexander D.
Sumner, Michael
Roquet, Fabien
Heerah, Karine
Picard, Baptiste
Guinet, Christophe
Harcourt, Robert
McMahon, Clive
Hindell, Mark A.
Charrassin, Jean-Benoit
author_sort Labrousse, Sara
collection PubMed
description Antarctic coastal polynyas are regions of persistent open water and are thought to be key bio-physical features within the sea-ice zone. However, their use by the upper trophic levels of ecosystems remains unclear. A unique bio-physical dataset recorded by southern elephant seals reveals that East Antarctic polynyas are a key winter foraging habitat for male seals. During their post-moult trips from Isles Kerguelen to the Antarctic continental shelf, a total of 18 out of 23 seals visited 9 different polynyas, spending on average 25 ± 20% (up to 75%) of their total trip time inside polynyas. Changes in seal foraging and diving behaviours are observed inside polynyas as compared to outside polynyas. Two polynya usages by seals are observed for the inactive and active polynya phases, pointing to different seasonal peaks in prey abundance. During the active polynya phase, we link seal foraging behaviour to changes in the physical stability of the water-column, which likely impact the seasonal biological dynamics within polynyas.
format Online
Article
Text
id pubmed-5816617
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-58166172018-02-21 Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica Labrousse, Sara Williams, Guy Tamura, Takeshi Bestley, Sophie Sallée, Jean-Baptiste Fraser, Alexander D. Sumner, Michael Roquet, Fabien Heerah, Karine Picard, Baptiste Guinet, Christophe Harcourt, Robert McMahon, Clive Hindell, Mark A. Charrassin, Jean-Benoit Sci Rep Article Antarctic coastal polynyas are regions of persistent open water and are thought to be key bio-physical features within the sea-ice zone. However, their use by the upper trophic levels of ecosystems remains unclear. A unique bio-physical dataset recorded by southern elephant seals reveals that East Antarctic polynyas are a key winter foraging habitat for male seals. During their post-moult trips from Isles Kerguelen to the Antarctic continental shelf, a total of 18 out of 23 seals visited 9 different polynyas, spending on average 25 ± 20% (up to 75%) of their total trip time inside polynyas. Changes in seal foraging and diving behaviours are observed inside polynyas as compared to outside polynyas. Two polynya usages by seals are observed for the inactive and active polynya phases, pointing to different seasonal peaks in prey abundance. During the active polynya phase, we link seal foraging behaviour to changes in the physical stability of the water-column, which likely impact the seasonal biological dynamics within polynyas. Nature Publishing Group UK 2018-02-16 /pmc/articles/PMC5816617/ /pubmed/29453356 http://dx.doi.org/10.1038/s41598-018-21388-9 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Labrousse, Sara
Williams, Guy
Tamura, Takeshi
Bestley, Sophie
Sallée, Jean-Baptiste
Fraser, Alexander D.
Sumner, Michael
Roquet, Fabien
Heerah, Karine
Picard, Baptiste
Guinet, Christophe
Harcourt, Robert
McMahon, Clive
Hindell, Mark A.
Charrassin, Jean-Benoit
Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica
title Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica
title_full Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica
title_fullStr Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica
title_full_unstemmed Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica
title_short Coastal polynyas: Winter oases for subadult southern elephant seals in East Antarctica
title_sort coastal polynyas: winter oases for subadult southern elephant seals in east antarctica
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5816617/
https://www.ncbi.nlm.nih.gov/pubmed/29453356
http://dx.doi.org/10.1038/s41598-018-21388-9
work_keys_str_mv AT labroussesara coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT williamsguy coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT tamuratakeshi coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT bestleysophie coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT salleejeanbaptiste coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT fraseralexanderd coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT sumnermichael coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT roquetfabien coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT heerahkarine coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT picardbaptiste coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT guinetchristophe coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT harcourtrobert coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT mcmahonclive coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT hindellmarka coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica
AT charrassinjeanbenoit coastalpolynyaswinteroasesforsubadultsouthernelephantsealsineastantarctica