A multiple mark and recapture estimate applied to polar bears

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Abstract
The mark–recapture technique described in this paper estimates polar bear (Ursus maritimus) populations for all sample periods except the first sample period, incorporates an open population model, and is supported by ecological data from ringed seals and polar bears. The estimation procedure requires that survival rates are either known or estimated independently as part of the research program. Reasonably precise estimates will be produced if 10 to 20% of the population can be marked and sample sizes of 150 bears can be handled at any given sample period.

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