Sub‐mesoscale fronts modify elephant seals foraging behavior
Abstract 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...
Published in: | Limnology and Oceanography Letters |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2019
|
Subjects: | |
Online Access: | https://doi.org/10.1002/lol2.10121 https://doaj.org/article/ccc79533386c478d9d1c8700ca9b1d31 |
id |
ftdoajarticles:oai:doaj.org/article:ccc79533386c478d9d1c8700ca9b1d31 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:ccc79533386c478d9d1c8700ca9b1d31 2023-05-15T13:52:49+02:00 Sub‐mesoscale fronts modify elephant seals foraging behavior Pascal Rivière Thomas Jaud Lia Siegelman Patrice Klein Cédric Cotté Julien Le Sommer Guillaume Dencausse Christophe Guinet 2019-12-01T00:00:00Z https://doi.org/10.1002/lol2.10121 https://doaj.org/article/ccc79533386c478d9d1c8700ca9b1d31 EN eng Wiley https://doi.org/10.1002/lol2.10121 https://doaj.org/toc/2378-2242 2378-2242 doi:10.1002/lol2.10121 https://doaj.org/article/ccc79533386c478d9d1c8700ca9b1d31 Limnology and Oceanography Letters, Vol 4, Iss 6, Pp 193-204 (2019) Oceanography GC1-1581 article 2019 ftdoajarticles https://doi.org/10.1002/lol2.10121 2022-12-31T02:07:02Z Abstract 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 Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Limnology and Oceanography Letters 4 6 193 204 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Oceanography GC1-1581 |
spellingShingle |
Oceanography GC1-1581 Pascal Rivière Thomas Jaud Lia Siegelman Patrice Klein Cédric Cotté Julien Le Sommer Guillaume Dencausse Christophe Guinet Sub‐mesoscale fronts modify elephant seals foraging behavior |
topic_facet |
Oceanography GC1-1581 |
description |
Abstract 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 |
Pascal Rivière Thomas Jaud Lia Siegelman Patrice Klein Cédric Cotté Julien Le Sommer Guillaume Dencausse Christophe Guinet |
author_facet |
Pascal Rivière Thomas Jaud Lia Siegelman Patrice Klein Cédric Cotté Julien Le Sommer Guillaume Dencausse Christophe Guinet |
author_sort |
Pascal Rivière |
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://doi.org/10.1002/lol2.10121 https://doaj.org/article/ccc79533386c478d9d1c8700ca9b1d31 |
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, Vol 4, Iss 6, Pp 193-204 (2019) |
op_relation |
https://doi.org/10.1002/lol2.10121 https://doaj.org/toc/2378-2242 2378-2242 doi:10.1002/lol2.10121 https://doaj.org/article/ccc79533386c478d9d1c8700ca9b1d31 |
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_ |
1766257565133438976 |