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Gjertz, Ian; Lydersen, Christian (1986)
Publisher: Co-Action Publishing
Journal: Polar Research
Languages: English
Types: Article
Polar bear hunting success on ringed seals in subnivean lairs and basking on the fast ice, was studied in Hornsund, Svalbard. A few bears were observed while actually hunting, but in most cases bear tracks were followed by snowmobile to determine the outcome of hunts. Seal carcasses were classified from size and tooth annuli as pups, juveniles or adults. A total of 62 subnivean structures were entered by bears, with six scals killed. One of ten charges on basking seals resulted in a kill. Success rates of bears in Hornsund arc compared with rcsults of studies in Canada and Svalbard. Hunting success, polar bear. predation, ringed seul.
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    • Gjertz. I. & Lydersen C. 1983: Ungekasting hos ringscl i Svalhard-omrhdet. Fauna 36. 65-66.
    • Larsen. T. 1984: Population biology of the polar bear in the Svalhard area. Norsk Polarinsf. Skr. 1x4.
    • Lyderscn. C. & Gjertz. I . 1984: Studies of the ringcd seal (Plioca hispida Schreher 1775) in its hrccding habitat in Kongsfjorden. Svalhard, Norsk Polarinsrifurr Rapporlserie Nr. 19. 46 pp.
    • Len@.0. 1970: Thc polar hear (Ursus rnurifirnusPhipps) in the Svalhard area. Norsk Polarinst. Skr. 14Y. 103 pp.
    • Smith, T. G . 1980: Polar hear predation of ringed and bearded scals in the land-fast sea icc habitat. Can. J. Zoo/. 5X, 2201- 22oY.
    • Smith. T. G . & Hammill. M. 0. 1981: Ecology of the ringcd scal, Plioca hispidu. in its fast icc breeding habitat. Can. 1. zoo/.59. 966-9x1.
    • Smith. T. G. & Stirling. 1. 1975: The hrccding habitat of thc ringed scal (Plioca hispida). Thc birth lair and associated structures. Can. J. Z o o / . 5.1. 1297-1305.
    • Stirling, 1. 1974: Midsummer ohscrvations on thc bchavior of wild polar hears (Ursusrnuritim~s)C.an. J . 2001.52. I 19 I - I 198.
    • Stirling. I . & Archibald. W. R . 1977: Aspects of prcdation o f seals by polar bears. J. Fish. Res. Bd. Cari. 34. 1126-1129.
    • Stirling. I. & McEwan. E. H. 1975: The caloric value of whole ringed seals (Plioca hispidu) in relation to polar hear (Ursus rnaritirnrrs) ecology and hunting bchavior. Cun. J , Zoo/. 53. 102 I -1027.
    • Taughol. G . 1982: Thennoregulation, energy bolance and development of ringed seal pups in their first weeks of life. Cand. real. thesis. Zoofysiol. Inst. Univ. Oslo. 102 pp. (in Norwegian).
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