Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area
This study documents activity patterns and diving behaviour of four bearded seal (Erignathus barbatus)mothers during the lactation period. Depth and velocity were recorded at intervals of 10 s, with a depth resolution of 2 m. The females spent 8 ± 3% (mean ± SD) of their time hauled out on the ice a...
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Norwegian Polar Institute
2008
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npolardata:oai:npolar.no:dataset/a4419dff-306c-5c3c-beaf-c4d17071a60e 2024-03-03T22:15:37+00:00 Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area Kovacs, Kit M. Gjertz, Ian Haug, Tore Krafft, Bjørn Lydersen, Christian BEGINDATE: 1995-05-01 ENDDATE: 1996-05-31 ENVELOPE(11.66666667,11.66666667,79.0,79.0) OCEAN, ATLANTIC OCEAN, NORTH ATLANTIC OCEAN, SVALBARD AND JAN MAYEN, Kongsfjorden GEOGRAPHIC REGION, ARCTIC GEOGRAPHIC REGION, POLAR 2008-07-09 http://data.npolar.no/dataset/a4419dff-306c-5c3c-beaf-c4d17071a60e unknown Norwegian Polar Institute BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS Dataset 2008 npolardata 2017-09-07T07:14:17Z This study documents activity patterns and diving behaviour of four bearded seal (Erignathus barbatus)mothers during the lactation period. Depth and velocity were recorded at intervals of 10 s, with a depth resolution of 2 m. The females spent 8 ± 3% (mean ± SD) of their time hauled out on the ice and92 ± 3% in the water. Approximately half of their time was spent diving. During the study 15 077 dives were recorded.The duration of dives was 2.0 ± 2.3 min and diving depth was 17.2 ± 22.5 m (maximum 18.7 min and 288 m,respectively). Haulout periods occurred 3 ± 2 times per day (duration = 44.0 ± 98.1 min). The overall distance swumper day was 48.1 ± 23.2 km. Three dive types were differentiated using a combination of hierarchical and k-meansclustering, one V-shaped grouping and two U-shaped groupings. The most common dive type was U1; these dives werethe deepest and longest type (depth = 28 ± 32 m, duration = 185 ± 146 s), and bottom time occupied a significantfraction of the total dive time (120 ± 120 s). These dives are likely foraging dives. Lactation is energetically demandingfor bearded seals, and females do forage while they have dependent pups. Dataset Arctic bearded seal Erignathus barbatus Jan Mayen Kongsfjord* Kongsfjorden North Atlantic Svalbard walrus* Norwegian Polar Data Centre Arctic Jan Mayen Svalbard Svalbard ENVELOPE(20.000,20.000,78.000,78.000) ENVELOPE(11.66666667,11.66666667,79.0,79.0) |
institution |
Open Polar |
collection |
Norwegian Polar Data Centre |
op_collection_id |
npolardata |
language |
unknown |
topic |
BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS |
spellingShingle |
BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS Kovacs, Kit M. Gjertz, Ian Haug, Tore Krafft, Bjørn Lydersen, Christian Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area |
topic_facet |
BIOTA biology EARTH SCIENCE BIOLOGICAL CLASSIFICATION ANIMALS/VERTEBRATES MAMMALS CARNIVORES SEALS/SEA LIONS/WALRUSES BIOSPHERE ECOLOGICAL DYNAMICS |
description |
This study documents activity patterns and diving behaviour of four bearded seal (Erignathus barbatus)mothers during the lactation period. Depth and velocity were recorded at intervals of 10 s, with a depth resolution of 2 m. The females spent 8 ± 3% (mean ± SD) of their time hauled out on the ice and92 ± 3% in the water. Approximately half of their time was spent diving. During the study 15 077 dives were recorded.The duration of dives was 2.0 ± 2.3 min and diving depth was 17.2 ± 22.5 m (maximum 18.7 min and 288 m,respectively). Haulout periods occurred 3 ± 2 times per day (duration = 44.0 ± 98.1 min). The overall distance swumper day was 48.1 ± 23.2 km. Three dive types were differentiated using a combination of hierarchical and k-meansclustering, one V-shaped grouping and two U-shaped groupings. The most common dive type was U1; these dives werethe deepest and longest type (depth = 28 ± 32 m, duration = 185 ± 146 s), and bottom time occupied a significantfraction of the total dive time (120 ± 120 s). These dives are likely foraging dives. Lactation is energetically demandingfor bearded seals, and females do forage while they have dependent pups. |
format |
Dataset |
author |
Kovacs, Kit M. Gjertz, Ian Haug, Tore Krafft, Bjørn Lydersen, Christian |
author_facet |
Kovacs, Kit M. Gjertz, Ian Haug, Tore Krafft, Bjørn Lydersen, Christian |
author_sort |
Kovacs, Kit M. |
title |
Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area |
title_short |
Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area |
title_full |
Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area |
title_fullStr |
Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area |
title_full_unstemmed |
Diving behaviour of lactating bearded seals (Erignathus barbatus) in the Svalbard area |
title_sort |
diving behaviour of lactating bearded seals (erignathus barbatus) in the svalbard area |
publisher |
Norwegian Polar Institute |
publishDate |
2008 |
url |
http://data.npolar.no/dataset/a4419dff-306c-5c3c-beaf-c4d17071a60e |
op_coverage |
BEGINDATE: 1995-05-01 ENDDATE: 1996-05-31 ENVELOPE(11.66666667,11.66666667,79.0,79.0) OCEAN, ATLANTIC OCEAN, NORTH ATLANTIC OCEAN, SVALBARD AND JAN MAYEN, Kongsfjorden GEOGRAPHIC REGION, ARCTIC GEOGRAPHIC REGION, POLAR |
long_lat |
ENVELOPE(20.000,20.000,78.000,78.000) ENVELOPE(11.66666667,11.66666667,79.0,79.0) |
geographic |
Arctic Jan Mayen Svalbard Svalbard |
geographic_facet |
Arctic Jan Mayen Svalbard Svalbard |
genre |
Arctic bearded seal Erignathus barbatus Jan Mayen Kongsfjord* Kongsfjorden North Atlantic Svalbard walrus* |
genre_facet |
Arctic bearded seal Erignathus barbatus Jan Mayen Kongsfjord* Kongsfjorden North Atlantic Svalbard walrus* |
_version_ |
1792545070453358592 |