Sub‐mesoscale fronts modify elephant seals foraging behavior
Sub‐mesoscale fronts—with scales from 1 to 50 km are ubiquitous in satellite images of the world oceans. They are known to generate strong vertical velocities with significant impacts on biogeochemical fluxes and pelagic ecosystems. Here, we use a unique data set, combining high‐resolution behaviora...
Published in: | Limnology and Oceanography Letters |
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ftarchimer:oai:archimer.ifremer.fr:69636 2023-05-15T13:47:36+02:00 Sub‐mesoscale fronts modify elephant seals foraging behavior Rivière, Pascal Jaud, Thomas Siegelman, Lia Klein, Patrice Cotté, Cedric Le Sommer, Julien Dencausse, Guillaume Guinet, Christophe 2019-12 application/pdf https://archimer.ifremer.fr/doc/00584/69636/67497.pdf https://archimer.ifremer.fr/doc/00584/69636/67498.pdf https://doi.org/10.1002/lol2.10121 https://archimer.ifremer.fr/doc/00584/69636/ eng eng Wiley https://archimer.ifremer.fr/doc/00584/69636/67497.pdf https://archimer.ifremer.fr/doc/00584/69636/67498.pdf doi:10.1002/lol2.10121 https://archimer.ifremer.fr/doc/00584/69636/ info:eu-repo/semantics/openAccess restricted use Limnology And Oceanography Letters (2378-2242) (Wiley), 2019-12 , Vol. 4 , N. 6 , P. 193-204 text Publication info:eu-repo/semantics/article 2019 ftarchimer https://doi.org/10.1002/lol2.10121 2021-09-23T20:33:33Z Sub‐mesoscale fronts—with scales from 1 to 50 km are ubiquitous in satellite images of the world oceans. They are known to generate strong vertical velocities with significant impacts on biogeochemical fluxes and pelagic ecosystems. Here, we use a unique data set, combining high‐resolution behavioral and physical measurements, to determine the effects of sub‐mesoscale structures on the foraging behavior of 12 instrumented female southern elephant seals. These marine mammals make long voyages (several months over more than 2000 km), diving and feeding continuously in the Antarctic Circumpolar Current. Our results show that elephant seals change their foraging behavior when crossing sub‐mesoscale fronts: They forage more and at shallower depths inside sub‐mesoscale fronts compared to nonfrontal areas, and they also reduce their horizontal velocity likely to concentrate on their vertical diving activity. The results highlight the importance of sub‐mesoscale fronts in enhancing prey accessibility for upper trophic levels, and suggest that trophic interactions are stimulated in these structures. Article in Journal/Newspaper Antarc* Antarctic Elephant Seals Southern Elephant Seals Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Antarctic The Antarctic Limnology and Oceanography Letters 4 6 193 204 |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
description |
Sub‐mesoscale fronts—with scales from 1 to 50 km are ubiquitous in satellite images of the world oceans. They are known to generate strong vertical velocities with significant impacts on biogeochemical fluxes and pelagic ecosystems. Here, we use a unique data set, combining high‐resolution behavioral and physical measurements, to determine the effects of sub‐mesoscale structures on the foraging behavior of 12 instrumented female southern elephant seals. These marine mammals make long voyages (several months over more than 2000 km), diving and feeding continuously in the Antarctic Circumpolar Current. Our results show that elephant seals change their foraging behavior when crossing sub‐mesoscale fronts: They forage more and at shallower depths inside sub‐mesoscale fronts compared to nonfrontal areas, and they also reduce their horizontal velocity likely to concentrate on their vertical diving activity. The results highlight the importance of sub‐mesoscale fronts in enhancing prey accessibility for upper trophic levels, and suggest that trophic interactions are stimulated in these structures. |
format |
Article in Journal/Newspaper |
author |
Rivière, Pascal Jaud, Thomas Siegelman, Lia Klein, Patrice Cotté, Cedric Le Sommer, Julien Dencausse, Guillaume Guinet, Christophe |
spellingShingle |
Rivière, Pascal Jaud, Thomas Siegelman, Lia Klein, Patrice Cotté, Cedric Le Sommer, Julien Dencausse, Guillaume Guinet, Christophe Sub‐mesoscale fronts modify elephant seals foraging behavior |
author_facet |
Rivière, Pascal Jaud, Thomas Siegelman, Lia Klein, Patrice Cotté, Cedric Le Sommer, Julien Dencausse, Guillaume Guinet, Christophe |
author_sort |
Rivière, Pascal |
title |
Sub‐mesoscale fronts modify elephant seals foraging behavior |
title_short |
Sub‐mesoscale fronts modify elephant seals foraging behavior |
title_full |
Sub‐mesoscale fronts modify elephant seals foraging behavior |
title_fullStr |
Sub‐mesoscale fronts modify elephant seals foraging behavior |
title_full_unstemmed |
Sub‐mesoscale fronts modify elephant seals foraging behavior |
title_sort |
sub‐mesoscale fronts modify elephant seals foraging behavior |
publisher |
Wiley |
publishDate |
2019 |
url |
https://archimer.ifremer.fr/doc/00584/69636/67497.pdf https://archimer.ifremer.fr/doc/00584/69636/67498.pdf https://doi.org/10.1002/lol2.10121 https://archimer.ifremer.fr/doc/00584/69636/ |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Elephant Seals Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Elephant Seals Southern Elephant Seals |
op_source |
Limnology And Oceanography Letters (2378-2242) (Wiley), 2019-12 , Vol. 4 , N. 6 , P. 193-204 |
op_relation |
https://archimer.ifremer.fr/doc/00584/69636/67497.pdf https://archimer.ifremer.fr/doc/00584/69636/67498.pdf doi:10.1002/lol2.10121 https://archimer.ifremer.fr/doc/00584/69636/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/lol2.10121 |
container_title |
Limnology and Oceanography Letters |
container_volume |
4 |
container_issue |
6 |
container_start_page |
193 |
op_container_end_page |
204 |
_version_ |
1766247513611829248 |