Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic
The diet of Antarctic fur seals (Arctocephalus gazella) at South Georgia is dominated by Antarctic krill (Euphausia superba). During the breeding season, foraging trips by lactating female fur seals are constrained by their need to return to land to provision their pups. Post-breeding, seals dispers...
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2021
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Online Access: | http://nora.nerc.ac.uk/id/eprint/529821/ https://nora.nerc.ac.uk/id/eprint/529821/1/journal.pone.0248071.pdf https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0248071 |
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ftnerc:oai:nora.nerc.ac.uk:529821 2023-05-15T13:41:45+02:00 Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic Bamford, Connor C.G. Warwick-Evans, Victoria Staniland, Iain J. Jackson, Jennifer A. Trathan, Philip N. 2021-03-04 text http://nora.nerc.ac.uk/id/eprint/529821/ https://nora.nerc.ac.uk/id/eprint/529821/1/journal.pone.0248071.pdf https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0248071 en eng Public Library of Science https://nora.nerc.ac.uk/id/eprint/529821/1/journal.pone.0248071.pdf Bamford, Connor C.G. orcid:0000-0002-5732-7237 Warwick-Evans, Victoria orcid:0000-0002-0583-5504 Staniland, Iain J. orcid:0000-0003-2736-9134 Jackson, Jennifer A. orcid:0000-0003-4158-1924 Trathan, Philip N. orcid:0000-0001-6673-9930 . 2021 Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic. PLoS ONE, 16 (3), e0248071. 20, pp. https://doi.org/10.1371/journal.pone.0248071 <https://doi.org/10.1371/journal.pone.0248071> cc_by_4 CC-BY Publication - Article PeerReviewed 2021 ftnerc https://doi.org/10.1371/journal.pone.0248071 2023-02-04T19:51:49Z The diet of Antarctic fur seals (Arctocephalus gazella) at South Georgia is dominated by Antarctic krill (Euphausia superba). During the breeding season, foraging trips by lactating female fur seals are constrained by their need to return to land to provision their pups. Post-breeding, seals disperse in order to feed and recover condition; estimates indicate c.70% of females remain near to South Georgia, whilst others head west towards the Patagonian Shelf or south to the ice-edge. The krill fishery at South Georgia operates only during the winter, providing the potential for fur seal: fishery interaction during these months. Here we use available winter (May to September) tracking data from Platform Terminal Transmitter (PTT) tags deployed on female fur seals at Bird Island, South Georgia. We develop habitat models describing their distribution during the winters of 1999 and 2003 with the aim of visualising and quantifying the degree of spatial overlap between female fur seals and krill harvesting in South Georgia waters. We show that spatial distribution of fur seals around South Georgia is extensive, and that the krill fishery overlaps with small, highly localised areas of available fur seal habitat. From these findings we discuss the implications for management, and future work. Article in Journal/Newspaper Antarc* Antarctic Antarctic Fur Seals Antarctic Krill Arctocephalus gazella Bird Island Euphausia superba Natural Environment Research Council: NERC Open Research Archive Antarctic Bird Island ENVELOPE(-38.060,-38.060,-54.004,-54.004) PLOS ONE 16 3 e0248071 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The diet of Antarctic fur seals (Arctocephalus gazella) at South Georgia is dominated by Antarctic krill (Euphausia superba). During the breeding season, foraging trips by lactating female fur seals are constrained by their need to return to land to provision their pups. Post-breeding, seals disperse in order to feed and recover condition; estimates indicate c.70% of females remain near to South Georgia, whilst others head west towards the Patagonian Shelf or south to the ice-edge. The krill fishery at South Georgia operates only during the winter, providing the potential for fur seal: fishery interaction during these months. Here we use available winter (May to September) tracking data from Platform Terminal Transmitter (PTT) tags deployed on female fur seals at Bird Island, South Georgia. We develop habitat models describing their distribution during the winters of 1999 and 2003 with the aim of visualising and quantifying the degree of spatial overlap between female fur seals and krill harvesting in South Georgia waters. We show that spatial distribution of fur seals around South Georgia is extensive, and that the krill fishery overlaps with small, highly localised areas of available fur seal habitat. From these findings we discuss the implications for management, and future work. |
format |
Article in Journal/Newspaper |
author |
Bamford, Connor C.G. Warwick-Evans, Victoria Staniland, Iain J. Jackson, Jennifer A. Trathan, Philip N. |
spellingShingle |
Bamford, Connor C.G. Warwick-Evans, Victoria Staniland, Iain J. Jackson, Jennifer A. Trathan, Philip N. Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic |
author_facet |
Bamford, Connor C.G. Warwick-Evans, Victoria Staniland, Iain J. Jackson, Jennifer A. Trathan, Philip N. |
author_sort |
Bamford, Connor C.G. |
title |
Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic |
title_short |
Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic |
title_full |
Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic |
title_fullStr |
Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic |
title_full_unstemmed |
Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic |
title_sort |
wintertime overlaps between female antarctic fur seals (arctocephalus gazella) and the krill fishery at south georgia, south atlantic |
publisher |
Public Library of Science |
publishDate |
2021 |
url |
http://nora.nerc.ac.uk/id/eprint/529821/ https://nora.nerc.ac.uk/id/eprint/529821/1/journal.pone.0248071.pdf https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0248071 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) |
geographic |
Antarctic Bird Island |
geographic_facet |
Antarctic Bird Island |
genre |
Antarc* Antarctic Antarctic Fur Seals Antarctic Krill Arctocephalus gazella Bird Island Euphausia superba |
genre_facet |
Antarc* Antarctic Antarctic Fur Seals Antarctic Krill Arctocephalus gazella Bird Island Euphausia superba |
op_relation |
https://nora.nerc.ac.uk/id/eprint/529821/1/journal.pone.0248071.pdf Bamford, Connor C.G. orcid:0000-0002-5732-7237 Warwick-Evans, Victoria orcid:0000-0002-0583-5504 Staniland, Iain J. orcid:0000-0003-2736-9134 Jackson, Jennifer A. orcid:0000-0003-4158-1924 Trathan, Philip N. orcid:0000-0001-6673-9930 . 2021 Wintertime overlaps between female Antarctic fur seals (Arctocephalus gazella) and the krill fishery at South Georgia, South Atlantic. PLoS ONE, 16 (3), e0248071. 20, pp. https://doi.org/10.1371/journal.pone.0248071 <https://doi.org/10.1371/journal.pone.0248071> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0248071 |
container_title |
PLOS ONE |
container_volume |
16 |
container_issue |
3 |
container_start_page |
e0248071 |
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1766157322761011200 |