Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign
The crabeater seal (Lobodon carcinophaga) is the most abundant Antarctic seal and inhabits the circumpolar pack ice zone of the Southern Ocean. Until now, information on important environmental factors affecting its distribution as well as on foraging behaviour is limited. In austral summer 1998, 12...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.854842 2023-05-15T13:44:47+02:00 Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign Nachtsheim, Dominik A Jerosch, Kerstin Hagen, Wilhelm Plötz, Joachim Bornemann, Horst MEDIAN LATITUDE: -71.624400 * MEDIAN LONGITUDE: -19.330648 * SOUTH-BOUND LATITUDE: -75.798000 * WEST-BOUND LONGITUDE: -47.604000 * NORTH-BOUND LATITUDE: -65.135000 * EAST-BOUND LONGITUDE: 55.483000 * DATE/TIME START: 1998-01-28T16:20:00 * DATE/TIME END: 1998-05-29T01:24:00 2016-08-09 application/zip, 55 datasets https://doi.pangaea.de/10.1594/PANGAEA.854842 https://doi.org/10.1594/PANGAEA.854842 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.854842 https://doi.org/10.1594/PANGAEA.854842 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Nachtsheim, Dominik A; Jerosch, Kerstin; Hagen, Wilhelm; Plötz, Joachim; Bornemann, Horst (2016): Habitat modelling of crabeater seals (Lobodon carcinophaga) in the Weddell Sea using the multivariate approach Maxent. Polar Biology, 40(5), 961-976, https://doi.org/10.1007/s00300-016-2020-0 Marine Mammal Tracking MMT Dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.854842 https://doi.org/10.1007/s00300-016-2020-0 2023-01-20T07:33:37Z The crabeater seal (Lobodon carcinophaga) is the most abundant Antarctic seal and inhabits the circumpolar pack ice zone of the Southern Ocean. Until now, information on important environmental factors affecting its distribution as well as on foraging behaviour is limited. In austral summer 1998, 12 crabeater seals of both sexes and different age classes were equipped with satellitelinked dive recorders at Drescher Inlet (72.85°S, 19.26°E), eastern Weddell Sea. To identify suitable habitat conditions within the Weddell Sea, a maximum entropy (Maxent) modelling approach was implemented. The model revealed that the eastern and southern Weddell Sea is especially suitable for crabeater seals. Distance to the continental shelf break and sea ice concentration were the two most important parameters in modelling species distribution throughout the study period. Model predictions demonstrated that crabeater seals showed a dynamic response to their seasonally changing environment emphasized by the favoured sea ice conditions. Crabeater seals utilized ice-free waters substantially, which is potentially explained by the comparatively low sea ice cover of the Weddell Sea during summer 1998. Diving behaviour was characterized by short (>90 % = 0-4 min) and shallow (>90 % = 0-51 m) dives. This pattern reflects the typical summer and autumn foraging behaviour of crabeater seals. Both the distribution and foraging behaviour corresponded well with the life history of the Antarctic krill (Euphausia superba), the preferred prey of crabeater seals. In general, predicted suitable habitat conditions were congruent with probable habitats of krill, which emphasizes the strong dependence on their primary prey. Dataset Antarc* Antarctic Antarctic Krill Crabeater Seal Crabeater Seals Euphausia superba Polar Biology Sea ice Southern Ocean Weddell Sea PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean The Antarctic Weddell Sea Austral Weddell ENVELOPE(-47.604000,55.483000,-65.135000,-75.798000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Marine Mammal Tracking MMT |
spellingShingle |
Marine Mammal Tracking MMT Nachtsheim, Dominik A Jerosch, Kerstin Hagen, Wilhelm Plötz, Joachim Bornemann, Horst Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign |
topic_facet |
Marine Mammal Tracking MMT |
description |
The crabeater seal (Lobodon carcinophaga) is the most abundant Antarctic seal and inhabits the circumpolar pack ice zone of the Southern Ocean. Until now, information on important environmental factors affecting its distribution as well as on foraging behaviour is limited. In austral summer 1998, 12 crabeater seals of both sexes and different age classes were equipped with satellitelinked dive recorders at Drescher Inlet (72.85°S, 19.26°E), eastern Weddell Sea. To identify suitable habitat conditions within the Weddell Sea, a maximum entropy (Maxent) modelling approach was implemented. The model revealed that the eastern and southern Weddell Sea is especially suitable for crabeater seals. Distance to the continental shelf break and sea ice concentration were the two most important parameters in modelling species distribution throughout the study period. Model predictions demonstrated that crabeater seals showed a dynamic response to their seasonally changing environment emphasized by the favoured sea ice conditions. Crabeater seals utilized ice-free waters substantially, which is potentially explained by the comparatively low sea ice cover of the Weddell Sea during summer 1998. Diving behaviour was characterized by short (>90 % = 0-4 min) and shallow (>90 % = 0-51 m) dives. This pattern reflects the typical summer and autumn foraging behaviour of crabeater seals. Both the distribution and foraging behaviour corresponded well with the life history of the Antarctic krill (Euphausia superba), the preferred prey of crabeater seals. In general, predicted suitable habitat conditions were congruent with probable habitats of krill, which emphasizes the strong dependence on their primary prey. |
format |
Dataset |
author |
Nachtsheim, Dominik A Jerosch, Kerstin Hagen, Wilhelm Plötz, Joachim Bornemann, Horst |
author_facet |
Nachtsheim, Dominik A Jerosch, Kerstin Hagen, Wilhelm Plötz, Joachim Bornemann, Horst |
author_sort |
Nachtsheim, Dominik A |
title |
Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign |
title_short |
Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign |
title_full |
Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign |
title_fullStr |
Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign |
title_full_unstemmed |
Crabeater seals (Lobodon carcinophaga) in the Weddell Sea during DRE1998 campaign |
title_sort |
crabeater seals (lobodon carcinophaga) in the weddell sea during dre1998 campaign |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.854842 https://doi.org/10.1594/PANGAEA.854842 |
op_coverage |
MEDIAN LATITUDE: -71.624400 * MEDIAN LONGITUDE: -19.330648 * SOUTH-BOUND LATITUDE: -75.798000 * WEST-BOUND LONGITUDE: -47.604000 * NORTH-BOUND LATITUDE: -65.135000 * EAST-BOUND LONGITUDE: 55.483000 * DATE/TIME START: 1998-01-28T16:20:00 * DATE/TIME END: 1998-05-29T01:24:00 |
long_lat |
ENVELOPE(-47.604000,55.483000,-65.135000,-75.798000) |
geographic |
Antarctic Southern Ocean The Antarctic Weddell Sea Austral Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Weddell Sea Austral Weddell |
genre |
Antarc* Antarctic Antarctic Krill Crabeater Seal Crabeater Seals Euphausia superba Polar Biology Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Krill Crabeater Seal Crabeater Seals Euphausia superba Polar Biology Sea ice Southern Ocean Weddell Sea |
op_source |
Supplement to: Nachtsheim, Dominik A; Jerosch, Kerstin; Hagen, Wilhelm; Plötz, Joachim; Bornemann, Horst (2016): Habitat modelling of crabeater seals (Lobodon carcinophaga) in the Weddell Sea using the multivariate approach Maxent. Polar Biology, 40(5), 961-976, https://doi.org/10.1007/s00300-016-2020-0 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.854842 https://doi.org/10.1594/PANGAEA.854842 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.854842 https://doi.org/10.1007/s00300-016-2020-0 |
_version_ |
1766206366382292992 |