Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator.
Photopoulou T, Heerah K, Pohle JM, Boehme L. Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. Proceedings of the Royal Society of London, Series B : Biological Sciences . 2020;287(1937): 20201447. Patterns of habitat use are commonly studied in horizontal s...
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2020
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ftubbiepub:oai:pub.uni-bielefeld.de:2948406 2023-05-15T13:40:40+02:00 Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. Photopoulou, Theoni Heerah, Karine Pohle, Jennifer Marie Boehme, Lars 2020 https://pub.uni-bielefeld.de/record/2948406 eng eng Royal Society of London info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2020.1447 info:eu-repo/semantics/altIdentifier/issn/1471-2954 info:eu-repo/semantics/altIdentifier/wos/000586460200003 info:eu-repo/semantics/altIdentifier/pmid/33081623 https://pub.uni-bielefeld.de/record/2948406 https://creativecommons.org/licenses/by/4.0/ CC-BY http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article doc-type:article text 2020 ftubbiepub https://doi.org/10.1098/rspb.2020.1447 2022-02-08T22:37:15Z Photopoulou T, Heerah K, Pohle JM, Boehme L. Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. Proceedings of the Royal Society of London, Series B : Biological Sciences . 2020;287(1937): 20201447. Patterns of habitat use are commonly studied in horizontal space, but this does not capture the four-dimensional nature of ocean habitats (space, depth, and time). Deep-diving marine animals encounter varying oceanographic conditions, particularly at the poles, where there is strong seasonal variation in vertical ocean structuring. This dimension of space use is hidden if we only consider horizontal movement. To identify different diving behaviours and usage patterns of vertically distributed habitat, we use hidden Markov models fitted to telemetry data from an air-breathing top predator, the Weddell seal, in the Weddell Sea, Antarctica. We present evidence of overlapping use of high-density, continental shelf water masses by both sexes, as well as important differences in their preferences for oceanographic conditions. Males spend more time in the unique high-salinity shelf water masses found at depth, while females also venture off the continental shelf and visit warmer, shallower water masses. Both sexes exhibit a diurnal pattern in diving behaviour (deep in the day, shallow at night) that persists from austral autumn into winter. The differences in habitat use in this resident, sexually monomorphic Antarctic top predator suggest a different set of needs and constraints operating at the intraspecific level, not driven by body size. Article in Journal/Newspaper Antarc* Antarctic Antarctica Weddell Sea Weddell Seal PUB - Publications at Bielefeld University Antarctic Austral Weddell Weddell Sea Proceedings of the Royal Society B: Biological Sciences 287 1937 20201447 |
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Open Polar |
collection |
PUB - Publications at Bielefeld University |
op_collection_id |
ftubbiepub |
language |
English |
description |
Photopoulou T, Heerah K, Pohle JM, Boehme L. Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. Proceedings of the Royal Society of London, Series B : Biological Sciences . 2020;287(1937): 20201447. Patterns of habitat use are commonly studied in horizontal space, but this does not capture the four-dimensional nature of ocean habitats (space, depth, and time). Deep-diving marine animals encounter varying oceanographic conditions, particularly at the poles, where there is strong seasonal variation in vertical ocean structuring. This dimension of space use is hidden if we only consider horizontal movement. To identify different diving behaviours and usage patterns of vertically distributed habitat, we use hidden Markov models fitted to telemetry data from an air-breathing top predator, the Weddell seal, in the Weddell Sea, Antarctica. We present evidence of overlapping use of high-density, continental shelf water masses by both sexes, as well as important differences in their preferences for oceanographic conditions. Males spend more time in the unique high-salinity shelf water masses found at depth, while females also venture off the continental shelf and visit warmer, shallower water masses. Both sexes exhibit a diurnal pattern in diving behaviour (deep in the day, shallow at night) that persists from austral autumn into winter. The differences in habitat use in this resident, sexually monomorphic Antarctic top predator suggest a different set of needs and constraints operating at the intraspecific level, not driven by body size. |
format |
Article in Journal/Newspaper |
author |
Photopoulou, Theoni Heerah, Karine Pohle, Jennifer Marie Boehme, Lars |
spellingShingle |
Photopoulou, Theoni Heerah, Karine Pohle, Jennifer Marie Boehme, Lars Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. |
author_facet |
Photopoulou, Theoni Heerah, Karine Pohle, Jennifer Marie Boehme, Lars |
author_sort |
Photopoulou, Theoni |
title |
Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. |
title_short |
Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. |
title_full |
Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. |
title_fullStr |
Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. |
title_full_unstemmed |
Sex-specific variation in the use of vertical habitat by a resident Antarctic top predator. |
title_sort |
sex-specific variation in the use of vertical habitat by a resident antarctic top predator. |
publisher |
Royal Society of London |
publishDate |
2020 |
url |
https://pub.uni-bielefeld.de/record/2948406 |
geographic |
Antarctic Austral Weddell Weddell Sea |
geographic_facet |
Antarctic Austral Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctica Weddell Sea Weddell Seal |
genre_facet |
Antarc* Antarctic Antarctica Weddell Sea Weddell Seal |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2020.1447 info:eu-repo/semantics/altIdentifier/issn/1471-2954 info:eu-repo/semantics/altIdentifier/wos/000586460200003 info:eu-repo/semantics/altIdentifier/pmid/33081623 https://pub.uni-bielefeld.de/record/2948406 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1098/rspb.2020.1447 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
287 |
container_issue |
1937 |
container_start_page |
20201447 |
_version_ |
1766138342561284096 |