Sampling design and bias in DNA-based capture-mark-recapture population and density estimates of Grizzly Bears

Article Abstract:

Two sampling designs were assessed over a 3-year period for estimating the population size of grizzly bears (Ursus arctos), using the DNA capture-mark-recapture methods in British Columbia, Canada. The trade-off between intensive sampling to ensure robustness and the adequate precision of estimators is illustrated.

Canada, Labor Distribution by Employer, Statistics, Animal populations, Bears

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Success of grizzly bear population augmentation in northwest Montana

Article Abstract:

An experimental report on site fidelity, reproduction, and long-term survival of the translocated bears and use of DNA hair-grab sampling to track survival and reproductive fate of the translocated female is presented.

Montana, Sexual behavior, Environmental aspects, Wilderness survival, Ecological succession

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Estimating Grizzly bear distribution and abundance relative to habitat and human influence

Article Abstract:

Factors that influence and predict grizzly bear distribution are discussed. The evaluation of relationship of grizzly bears detections with landscape variables of habitat and human activity is also highlighted.

Influence, Demographic aspects, Habitat (Ecology), Habitats

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