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dc.creatorSullivan, T.P.
dc.creatorSullivan, D.S.
dc.creatorHogue, E.J.
dc.description.abstractVoles (Microtus spp.) occupy perennial grasslands and agricultural areas in many parts of North America. This study was designed to provide a detailed analysis of the population dynamics of montane voles (M. montanus) in old field and orchard habitats. Vole populations were intensively live-trapped in replicate old field and orchard sites over a 4-year period (1982-86) at Summerland, British Columbia, Canada. Populations of montane voles reached peak densities of 186 and 144 voles/ha in old field sites before declining to numbers averaging less than 60 voles/ha. Orchard populations of montane voles also followed this pattern but at consistently lower numbers than old field sites. This difference in abundance ranged from 2.3-3.6 times during the peak year to 23.8-116.3 times in the decline year, at which time montane voles had declined to a mean number of 0.3-2.4 voles/ha in orchard sites. Length of breeding seasons, proportion of reproductive voles, and mean number of recruits were generally similar in old field and orchard sites. Overall mean survival of voles tended to decline through time in orchard sites, averaging 0.47 compared with old field survival of 0.76. Mean body mass of voles was consistently higher in old field than orchard sites. Montane vole populations in orchards seemed to be linked to source area dynamics of populations in old fields.en_US
dc.publisherWSU Press
dc.rightsIn copyright
dc.subjectbody mass-indexen_US
dc.subjectgeographical distributionen_US
dc.subjectmountain soilsen_US
dc.subjectplant pestsen_US
dc.subjectpopulation dynamicsen_US
dc.subjectspecies richnessen_US
dc.titleDemography of montane voles in old field and orchard habitats in Southern British Columbia
dc.description.citationSullivan et al "Demography of montane voles in old field and orchard habitats in Southern British Columbia." Northwest Science. 2003; 77(3): 228-236

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  • Northwest Science
    Northwest Science features original research in the basic and applied sciences, with emphasis on the Pacific Northwest region of the United States and Canada.

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