Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions
International audience Changes in marine environments, induced by the global warming, are likely to influence the prey field distribution and consequently the foraging behaviour and the distribution of top marine predators. Thanks to bio-logging, the simultaneous measurements of fine-scale foraging...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
---|---|
Main Authors: | , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2015
|
Subjects: | |
Online Access: | https://hal.archives-ouvertes.fr/hal-01294594 https://doi.org/10.1016/j.dsr2.2014.10.029 |
id |
ftccsdartic:oai:HAL:hal-01294594v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-01294594v1 2023-05-15T16:05:23+02:00 Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions Vacquié-Garcia, Jade Guinet, Christophe Laurent, Cecile, Bailleul, Frédéric Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2015 https://hal.archives-ouvertes.fr/hal-01294594 https://doi.org/10.1016/j.dsr2.2014.10.029 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2014.10.029 hal-01294594 https://hal.archives-ouvertes.fr/hal-01294594 doi:10.1016/j.dsr2.2014.10.029 ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.archives-ouvertes.fr/hal-01294594 Deep Sea Research Part II: Topical Studies in Oceanography, Elsevier, 2015, 113, pp.145-153. ⟨10.1016/j.dsr2.2014.10.029⟩ Elephants seals Prey capture attempts Myctophidae Predator–prey interaction Habitats [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.1016/j.dsr2.2014.10.029 2021-10-24T10:36:32Z International audience Changes in marine environments, induced by the global warming, are likely to influence the prey field distribution and consequently the foraging behaviour and the distribution of top marine predators. Thanks to bio-logging, the simultaneous measurements of fine-scale foraging behaviors and oceanographic parameters by predators allow characterizing their foraging environments and provide insights into their prey distribution. In this context, we propose to delimit and to characterize the foraging environments of a marine predator, the Southern Elephant Seal (SES). To do so, the relationship between oceanographic factors and prey encounter events (PEE) was investigated in 12 females SES from Kerguelen Island simultaneously equipped with accelerometers and with a range of physical sensors (temperature, light and depth). PEEs were assessed from the accelerometer data at high spatio-temporal precision while the physical sensors allowed the continuous monitoring of environmental conditions encountered by the SES when diving. First, visited and foraging environments were distinguished according to the oceanographic conditions encountered in the absence and in presence of PEE. Then, a hierarchical classification of the physical parameters recorded during PEEs led to the distinction of five different foraging environments. These foraging environments were structured according to the main frontal systems of the SO. One was located north to the subantarctic front (SAF) and characterized by high temperature and depth, and low light levels. Another, characterized by intermediate levels of temperature, light and depth, was located between the SAF and the polar front (PF). And finally, the last three environments were all found south to the PF and, characterized by low temperature but highly variable depth and light levels. The large physical and/or spatial differences found between these environments suggest that, depending on the location, different prey communities are targeted by SES over a broad ... Article in Journal/Newspaper Elephant Seal Southern Elephant Seal Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Deep Sea Research Part II: Topical Studies in Oceanography 113 145 153 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Elephants seals Prey capture attempts Myctophidae Predator–prey interaction Habitats [SDE]Environmental Sciences |
spellingShingle |
Elephants seals Prey capture attempts Myctophidae Predator–prey interaction Habitats [SDE]Environmental Sciences Vacquié-Garcia, Jade Guinet, Christophe Laurent, Cecile, Bailleul, Frédéric Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions |
topic_facet |
Elephants seals Prey capture attempts Myctophidae Predator–prey interaction Habitats [SDE]Environmental Sciences |
description |
International audience Changes in marine environments, induced by the global warming, are likely to influence the prey field distribution and consequently the foraging behaviour and the distribution of top marine predators. Thanks to bio-logging, the simultaneous measurements of fine-scale foraging behaviors and oceanographic parameters by predators allow characterizing their foraging environments and provide insights into their prey distribution. In this context, we propose to delimit and to characterize the foraging environments of a marine predator, the Southern Elephant Seal (SES). To do so, the relationship between oceanographic factors and prey encounter events (PEE) was investigated in 12 females SES from Kerguelen Island simultaneously equipped with accelerometers and with a range of physical sensors (temperature, light and depth). PEEs were assessed from the accelerometer data at high spatio-temporal precision while the physical sensors allowed the continuous monitoring of environmental conditions encountered by the SES when diving. First, visited and foraging environments were distinguished according to the oceanographic conditions encountered in the absence and in presence of PEE. Then, a hierarchical classification of the physical parameters recorded during PEEs led to the distinction of five different foraging environments. These foraging environments were structured according to the main frontal systems of the SO. One was located north to the subantarctic front (SAF) and characterized by high temperature and depth, and low light levels. Another, characterized by intermediate levels of temperature, light and depth, was located between the SAF and the polar front (PF). And finally, the last three environments were all found south to the PF and, characterized by low temperature but highly variable depth and light levels. The large physical and/or spatial differences found between these environments suggest that, depending on the location, different prey communities are targeted by SES over a broad ... |
author2 |
Centre d'Études Biologiques de Chizé - UMR 7372 (CEBC) Université de La Rochelle (ULR)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Vacquié-Garcia, Jade Guinet, Christophe Laurent, Cecile, Bailleul, Frédéric |
author_facet |
Vacquié-Garcia, Jade Guinet, Christophe Laurent, Cecile, Bailleul, Frédéric |
author_sort |
Vacquié-Garcia, Jade |
title |
Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions |
title_short |
Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions |
title_full |
Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions |
title_fullStr |
Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions |
title_full_unstemmed |
Delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions |
title_sort |
delineation of the southern elephant seal׳s main foraging environments defined by temperature and light conditions |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.archives-ouvertes.fr/hal-01294594 https://doi.org/10.1016/j.dsr2.2014.10.029 |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Kerguelen Kerguelen Island |
geographic_facet |
Kerguelen Kerguelen Island |
genre |
Elephant Seal Southern Elephant Seal |
genre_facet |
Elephant Seal Southern Elephant Seal |
op_source |
ISSN: 0967-0645 Deep Sea Research Part II: Topical Studies in Oceanography https://hal.archives-ouvertes.fr/hal-01294594 Deep Sea Research Part II: Topical Studies in Oceanography, Elsevier, 2015, 113, pp.145-153. ⟨10.1016/j.dsr2.2014.10.029⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr2.2014.10.029 hal-01294594 https://hal.archives-ouvertes.fr/hal-01294594 doi:10.1016/j.dsr2.2014.10.029 |
op_doi |
https://doi.org/10.1016/j.dsr2.2014.10.029 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
113 |
container_start_page |
145 |
op_container_end_page |
153 |
_version_ |
1766401283020816384 |