Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia
Elephant seals, Mirounga spp., are highly dimorphic, having different energetic requirements according to age and sex, and foraging in various ecological and oceanographic contexts. Resource partitioning has been shown for the sub-Antarctic populations of southern elephant seals, M. leonina, where c...
Published in: | Marine Mammal Science |
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Language: | English |
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2021
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Online Access: | https://pure.au.dk/portal/da/publications/ontogenetic-niche-partitioning-in-southern-elephant-seals-from-argentine-patagonia(4f85cf84-a83f-4df2-a510-3ed054fca836).html https://doi.org/10.1111/mms.12770 |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/4f85cf84-a83f-4df2-a510-3ed054fca836 2023-12-17T10:22:18+01:00 Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia Campagna, Julieta Lewis, Mirtha N. Carman, Victoria Gonzalez Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodriguez, Diego H. Hindell, Mark A. 2021-04 https://pure.au.dk/portal/da/publications/ontogenetic-niche-partitioning-in-southern-elephant-seals-from-argentine-patagonia(4f85cf84-a83f-4df2-a510-3ed054fca836).html https://doi.org/10.1111/mms.12770 eng eng https://pure.au.dk/portal/da/publications/ontogenetic-niche-partitioning-in-southern-elephant-seals-from-argentine-patagonia(4f85cf84-a83f-4df2-a510-3ed054fca836).html info:eu-repo/semantics/restrictedAccess Campagna , J , Lewis , M N , Carman , V G , Campagna , C , Guinet , C , Johnson , M , Davis , R W , Rodriguez , D H & Hindell , M A 2021 , ' Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia ' , Marine Mammal Science , vol. 37 , no. 2 , pp. 631-651 . https://doi.org/10.1111/mms.12770 AGE STRUCTURE BLACK-BROWED ALBATROSSES DEEP DIVERS DIVING BEHAVIOR FORAGING ECOLOGY JUVENILE SOUTHERN MARINE FRONTS MIROUNGA-LEONINA Mirounga leonina Pení SOUTHWEST ATLANTIC STABLE-ISOTOPES South Atlantic Ocean elephant seals niche partitioning nsula Valdé ontogeny s article 2021 ftuniaarhuspubl https://doi.org/10.1111/mms.12770 2023-11-23T00:01:23Z Elephant seals, Mirounga spp., are highly dimorphic, having different energetic requirements according to age and sex, and foraging in various ecological and oceanographic contexts. Resource partitioning has been shown for the sub-Antarctic populations of southern elephant seals, M. leonina, where colonies are surrounded by narrow shelves that deepen abruptly. In contrast, seals from Peninsula Valdes (Argentina), in the northernmost extent of the breeding range, face an extended, shallow, temperate, and productive continental shelf. We integrated tracking data from 98 animals (juveniles and adults, males and females) gathered over more than two decades, and found that although all available habitats were used, individuals segregated by age and sex. Juvenile males favored shelf habitats, whereas subadult and adult males also used the shelf break. Juvenile females preferred the shelf and the more distant Argentine Basin used by postbreeding and postmolt adult females. Males showed the highest proportion of area-restricted search locations, suggesting more spatially concentrated feeding activity, and likely reflecting a preference for foraging habitat and prey. Our results are consistent with those from other populations, implying that elephant seals show remarkable similarities in habitat use by age and sex classes, despite broad differences in the offshore habitats between sub-Antarctic and temperate ecosystems. Article in Journal/Newspaper Antarc* Antarctic Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals Aarhus University: Research Antarctic Argentina Argentine Patagonia Marine Mammal Science 37 2 631 651 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
AGE STRUCTURE BLACK-BROWED ALBATROSSES DEEP DIVERS DIVING BEHAVIOR FORAGING ECOLOGY JUVENILE SOUTHERN MARINE FRONTS MIROUNGA-LEONINA Mirounga leonina Pení SOUTHWEST ATLANTIC STABLE-ISOTOPES South Atlantic Ocean elephant seals niche partitioning nsula Valdé ontogeny s |
spellingShingle |
AGE STRUCTURE BLACK-BROWED ALBATROSSES DEEP DIVERS DIVING BEHAVIOR FORAGING ECOLOGY JUVENILE SOUTHERN MARINE FRONTS MIROUNGA-LEONINA Mirounga leonina Pení SOUTHWEST ATLANTIC STABLE-ISOTOPES South Atlantic Ocean elephant seals niche partitioning nsula Valdé ontogeny s Campagna, Julieta Lewis, Mirtha N. Carman, Victoria Gonzalez Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodriguez, Diego H. Hindell, Mark A. Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
topic_facet |
AGE STRUCTURE BLACK-BROWED ALBATROSSES DEEP DIVERS DIVING BEHAVIOR FORAGING ECOLOGY JUVENILE SOUTHERN MARINE FRONTS MIROUNGA-LEONINA Mirounga leonina Pení SOUTHWEST ATLANTIC STABLE-ISOTOPES South Atlantic Ocean elephant seals niche partitioning nsula Valdé ontogeny s |
description |
Elephant seals, Mirounga spp., are highly dimorphic, having different energetic requirements according to age and sex, and foraging in various ecological and oceanographic contexts. Resource partitioning has been shown for the sub-Antarctic populations of southern elephant seals, M. leonina, where colonies are surrounded by narrow shelves that deepen abruptly. In contrast, seals from Peninsula Valdes (Argentina), in the northernmost extent of the breeding range, face an extended, shallow, temperate, and productive continental shelf. We integrated tracking data from 98 animals (juveniles and adults, males and females) gathered over more than two decades, and found that although all available habitats were used, individuals segregated by age and sex. Juvenile males favored shelf habitats, whereas subadult and adult males also used the shelf break. Juvenile females preferred the shelf and the more distant Argentine Basin used by postbreeding and postmolt adult females. Males showed the highest proportion of area-restricted search locations, suggesting more spatially concentrated feeding activity, and likely reflecting a preference for foraging habitat and prey. Our results are consistent with those from other populations, implying that elephant seals show remarkable similarities in habitat use by age and sex classes, despite broad differences in the offshore habitats between sub-Antarctic and temperate ecosystems. |
format |
Article in Journal/Newspaper |
author |
Campagna, Julieta Lewis, Mirtha N. Carman, Victoria Gonzalez Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodriguez, Diego H. Hindell, Mark A. |
author_facet |
Campagna, Julieta Lewis, Mirtha N. Carman, Victoria Gonzalez Campagna, Claudio Guinet, Christophe Johnson, Mark Davis, Randall W. Rodriguez, Diego H. Hindell, Mark A. |
author_sort |
Campagna, Julieta |
title |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_short |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_full |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_fullStr |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_full_unstemmed |
Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia |
title_sort |
ontogenetic niche partitioning in southern elephant seals from argentine patagonia |
publishDate |
2021 |
url |
https://pure.au.dk/portal/da/publications/ontogenetic-niche-partitioning-in-southern-elephant-seals-from-argentine-patagonia(4f85cf84-a83f-4df2-a510-3ed054fca836).html https://doi.org/10.1111/mms.12770 |
geographic |
Antarctic Argentina Argentine Patagonia |
geographic_facet |
Antarctic Argentina Argentine Patagonia |
genre |
Antarc* Antarctic Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals |
genre_facet |
Antarc* Antarctic Elephant Seals Mirounga leonina South Atlantic Ocean Southern Elephant Seals |
op_source |
Campagna , J , Lewis , M N , Carman , V G , Campagna , C , Guinet , C , Johnson , M , Davis , R W , Rodriguez , D H & Hindell , M A 2021 , ' Ontogenetic niche partitioning in southern elephant seals from Argentine Patagonia ' , Marine Mammal Science , vol. 37 , no. 2 , pp. 631-651 . https://doi.org/10.1111/mms.12770 |
op_relation |
https://pure.au.dk/portal/da/publications/ontogenetic-niche-partitioning-in-southern-elephant-seals-from-argentine-patagonia(4f85cf84-a83f-4df2-a510-3ed054fca836).html |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/mms.12770 |
container_title |
Marine Mammal Science |
container_volume |
37 |
container_issue |
2 |
container_start_page |
631 |
op_container_end_page |
651 |
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1785546127584526336 |