Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems
International audience The distribution of foraging activity for female Antarctic fur seals was investigated at Cap Noir (49° 07' S, 70° 45' E), Kerguelen Island in February 1998. Eleven females were fitted with a satellite transmitter and time-depth recorder. The 2 data sets were combined...
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ftmuseumnhn:oai:HAL:hal-00192444v1 2024-02-11T09:58:01+01:00 Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems Guinet, Christophe Dubroca, Laurent Lea, Marie-Anne Goldsworthy, Simon D. Cherel, Yves Duhamel, Guy Bonadonna, Francesco Donnay, Jean-Paul Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Antartic Wildlife Research Unit School of Zoology, University of Tasmania Archéozoologie, histoire des sociétés Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS) Departement de Géomatique Université de Liège 2001 https://hal.science/hal-00192444 en eng HAL CCSD Inter Research hal-00192444 https://hal.science/hal-00192444 ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00192444 Marine Ecology Progress Series, 2001, 219, pp.251-264 Antarctic fur seal Diet Oceanographic conditions Foraging Geographic Information System [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society info:eu-repo/semantics/article Journal articles 2001 ftmuseumnhn 2024-01-24T17:32:29Z International audience The distribution of foraging activity for female Antarctic fur seals was investigated at Cap Noir (49° 07' S, 70° 45' E), Kerguelen Island in February 1998. Eleven females were fitted with a satellite transmitter and time-depth recorder. The 2 data sets were combined in order to locate diving activity of the seals. The occurrence of fish in the diet of the seals was investigated by the identification of otoliths in 55 scats collected at the breeding colony during the study period. Oceanographic variables were measured simultaneously by direct sampling and satellite remote sensing. The mesopelagic fish community was sampled at 20 stations along 4 transects, where epipelagic trawls were conducted at night at 50 m depth. We then investigated, using geographic information systems, the relationship between the spatial distribution of diving activity of the seals and oceanographic variables (sea surface temperature, surface chlorophyll concentration, prey distribution and bathymetry) at the same spatio-temporal scale. An inverse relationship was found between the main fish species preyed on by the fur seals and those sampled in trawl nets. However, diving activity of the seals was significantly related to oceanographic conditions, forage fish distribution and distance from the colony, although these relationships changed with the spatial scale investigated. A probabilistic model was developed for the distribution of diving activity, which predicted where females should concentrate their foraging activity according to the oceanographic conditions of the year, and where breeding colonies should be located Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella Muséum National d'Histoire Naturelle (MNHM): HAL Antarctic Cap Noir ENVELOPE(70.452,70.452,-49.069,-49.069) Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) |
institution |
Open Polar |
collection |
Muséum National d'Histoire Naturelle (MNHM): HAL |
op_collection_id |
ftmuseumnhn |
language |
English |
topic |
Antarctic fur seal Diet Oceanographic conditions Foraging Geographic Information System [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society |
spellingShingle |
Antarctic fur seal Diet Oceanographic conditions Foraging Geographic Information System [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society Guinet, Christophe Dubroca, Laurent Lea, Marie-Anne Goldsworthy, Simon D. Cherel, Yves Duhamel, Guy Bonadonna, Francesco Donnay, Jean-Paul Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems |
topic_facet |
Antarctic fur seal Diet Oceanographic conditions Foraging Geographic Information System [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDE.ES]Environmental Sciences/Environment and Society |
description |
International audience The distribution of foraging activity for female Antarctic fur seals was investigated at Cap Noir (49° 07' S, 70° 45' E), Kerguelen Island in February 1998. Eleven females were fitted with a satellite transmitter and time-depth recorder. The 2 data sets were combined in order to locate diving activity of the seals. The occurrence of fish in the diet of the seals was investigated by the identification of otoliths in 55 scats collected at the breeding colony during the study period. Oceanographic variables were measured simultaneously by direct sampling and satellite remote sensing. The mesopelagic fish community was sampled at 20 stations along 4 transects, where epipelagic trawls were conducted at night at 50 m depth. We then investigated, using geographic information systems, the relationship between the spatial distribution of diving activity of the seals and oceanographic variables (sea surface temperature, surface chlorophyll concentration, prey distribution and bathymetry) at the same spatio-temporal scale. An inverse relationship was found between the main fish species preyed on by the fur seals and those sampled in trawl nets. However, diving activity of the seals was significantly related to oceanographic conditions, forage fish distribution and distance from the colony, although these relationships changed with the spatial scale investigated. A probabilistic model was developed for the distribution of diving activity, which predicted where females should concentrate their foraging activity according to the oceanographic conditions of the year, and where breeding colonies should be located |
author2 |
Centre d'Études Biologiques de Chizé (CEBC) Centre National de la Recherche Scientifique (CNRS) Antartic Wildlife Research Unit School of Zoology, University of Tasmania Archéozoologie, histoire des sociétés Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS) Departement de Géomatique Université de Liège |
format |
Article in Journal/Newspaper |
author |
Guinet, Christophe Dubroca, Laurent Lea, Marie-Anne Goldsworthy, Simon D. Cherel, Yves Duhamel, Guy Bonadonna, Francesco Donnay, Jean-Paul |
author_facet |
Guinet, Christophe Dubroca, Laurent Lea, Marie-Anne Goldsworthy, Simon D. Cherel, Yves Duhamel, Guy Bonadonna, Francesco Donnay, Jean-Paul |
author_sort |
Guinet, Christophe |
title |
Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems |
title_short |
Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems |
title_full |
Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems |
title_fullStr |
Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems |
title_full_unstemmed |
Spatial distribution of foraging in female Antarctic fur seals Arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems |
title_sort |
spatial distribution of foraging in female antarctic fur seals arctocephalus gazella in relation to oceanographic variables: a scale-dependent approach using geographic information systems |
publisher |
HAL CCSD |
publishDate |
2001 |
url |
https://hal.science/hal-00192444 |
long_lat |
ENVELOPE(70.452,70.452,-49.069,-49.069) ENVELOPE(69.500,69.500,-49.250,-49.250) |
geographic |
Antarctic Cap Noir Kerguelen Kerguelen Island |
geographic_facet |
Antarctic Cap Noir Kerguelen Kerguelen Island |
genre |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella |
genre_facet |
Antarc* Antarctic Antarctic Fur Seal Antarctic Fur Seals Arctocephalus gazella |
op_source |
ISSN: 0171-8630 EISSN: 1616-1599 Marine Ecology Progress Series https://hal.science/hal-00192444 Marine Ecology Progress Series, 2001, 219, pp.251-264 |
op_relation |
hal-00192444 https://hal.science/hal-00192444 |
_version_ |
1790593584619061248 |