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Demography and metapopulation dynamics of collared pikas ( Ochotona collaris) in the southwest Yukon

Dates

Year
2002

Citation

Franken, Renee Joline, 2002, Demography and metapopulation dynamics of collared pikas ( Ochotona collaris) in the southwest Yukon: University of Alberta (Canada).

Summary

I conducted the first demographic analysis of collared pikas in the southwest Yukon. Individual growth rates were best described using a Gompertz model, and these rates were higher than those reported from southern latitudes. Parturition dates were asynchronous and weakly related to snow accumulation. Over-winter survival was low (34% adults; 25% juveniles), and juvenile survival was not related to dispersal, patch density, or parturition date. Survival was not sex-biased but varied depending on year of birth, aspect and other habitat variables, the latter showing considerable variation among years. A minimum of 34% of juveniles made inter-patch movements (mean of 332m); and both sexes dispersed with equal frequency. Pikas settled [...]

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Type
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Reference Item
6127 records
Reference File
NWBLCC-20160503-Saved.xml

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