Diving and haul-out patterns of walruses Odobenus rosmarus on Svalbard

Nine male walruses were equipped with dive recording devices in Svalbard to investigate walrus diving and haul-out behaviour in late summer. Dive information on 6,018 dives was collected by 3 satellite linked dive recorders. Additional dive information on 7,769 dives was obtained from 3 time depth r...

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Bibliographic Details
Published in:Polar biology 2001-05, Vol.24 (5), p.314-319
Main Authors: GJERTZ, I, GRIFFITHS, D, KRAFFT, B. A, LYDERSEN, C, WIIG, Ø
Format: Article
Language:English
Subjects:
Animal behavior
Animal ethology
Aquatic mammals
Biological and medical sciences
Depth recorders
Diving
Fundamental and applied biological sciences. Psychology
Mammalia
Marine
Marine biology
Marine mammals
Norway
Odobenus rosmarus
Psychology. Psychoanalysis. Psychiatry
Vertebrata
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Summary:Nine male walruses were equipped with dive recording devices in Svalbard to investigate walrus diving and haul-out behaviour in late summer. Dive information on 6,018 dives was collected by 3 satellite linked dive recorders. Additional dive information on 7,769 dives was obtained from 3 time depth recorders. The deepest dive recorded was 67 m, but mean depth of foraging dives was 22.5 m. The longest-lasting dive recorded was 24 min, but mean duration of foraging dives was 6 min. The walruses, on average, spent 56 h in the water followed by 20 h hauled out on land.
ISSN:0722-4060
1432-2056
DOI:10.1007/s003000000211