Discerning Biases in a Large Scale Mark–Recapture Population Estimate for Black Bears

作者: DAVID L. GARSHELIS , KAREN V. NOYCE

DOI: 10.2193/0022-541X(2006)70[1634:DBIALS]2.0.CO;2

关键词: Mark and recaptureAmerican blackDemographyGeographyPopulation sizePopulation estimateUrsusPopulation

摘要: Abstract We derived 3 rangewide mark–recapture estimates for American black bears (Ursus americanus) in Minnesota, USA, over a 12-year period (1991–2002) to aid management of this hunted population. used tetracycline-laden baits biomark 700–1,200 an area 85,000 km2 during each summer marking sessions. Ingested tetracycline produced long-lasting marks bones and permanent teeth. collected bone tooth samples from harvested both the year following examined them marks. For event, cumulative recapture sample totaled 3,400–4,800, or 14–30%, estimated Estimates population size, Lincoln–Petersen (L-P) estimator, pertained time marking; loss animals after was thus inconsequential, so long as losses were unbiased with respect marking. detected greater proportion year...

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