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Evaluating breeding habitat and populations of ringed seals Phoca hispida in Svalbard fjords

Published online by Cambridge University Press:  27 October 2009

Christian Lydersen  and
Morten Ryg
Christian Lydersen
Affiliation:
Department of General Physiology, Biological Institute, University of Oslo, PO Box 1051 Blindern 0316, Oslo 3, Norway
Morten Ryg
Affiliation:
Department of General Physiology, Biological Institute, University of Oslo, PO Box 1051 Blindern 0316, Oslo 3, Norway
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Abstract

In Tempelfjorden and Sassenfjorden, Svalbard, 12 March to4 April 1990, a Siberian husky dog was used to detect ringed seal breathing holes in the ice, using random stratified sampling to sample 20% (40 km2) of the total area. The area was estimated to contain 997 ringed seal breathing holes, corresponding to 293 ringed seals. A maximum of 185 pups were born in the area. A breeding condition factor was constructed to enable comparisons of yearly and areal variation in ice cover and precipitation within ringed seal breeding habitats.

Type
Articles
Information
Polar Record , Volume 27 , Issue 162 , July 1991 , pp. 223 - 228
Copyright
Copyright © Cambridge University Press 1991

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