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Using occupancy models to determine mammalian responses to landscape changes

Integrative Zoology 2009年第2期4卷 232-239页

作者： Jeremy M.NICHOLSON Frank T.VAN MANEN Department of Forestry Wildlifeand FisheriesUniversity of TennesseeKnoxvilleTennesseeUSA US Geological Survey Southern Appalachian Research BranchUniversity of TennesseeKnoxvilleTennesseeUSA

Determining impacts of anthropogenic landscape changes on wildlife populations is *** the challengesDetermining impacts of anthropogenic landscape changes on wildlife populations is *** the challenges of designing field studies to document conditions before and after landscape changes occur,assessment of popula-of designing field studies to document conditions before and after landscape changes occur,assessment of popula-tion responses(*** in population density)often provide poor inference because of sampling *** responses(*** in population density)often provide poor inference because of sampling *** of occupancy,however,only requires data on detection or non-detection of a species and might provideEstimation of occupancy,however,only requires data on detection or non-detection of a species and might provide better *** demonstrate the utility of occupancy models,we used data from an American black bear(Ursusbetter *** demonstrate the utility of occupancy models,we used data from an American black bear(Ursus americanus Pallas)population in North Carolina,USA to test our research hypothesis that documented declines inamericanus Pallas)population in North Carolina,USA to test our research hypothesis that documented declines in site occupancy of black bears would be greater near a new four-lane *** used multi-season occupancysite occupancy of black bears would be greater near a new four-lane *** used multi-season occupancy models to estimate site occupancy based on bear visitation to survey sites before and after completion of the newmodels to estimate site occupancy based on bear visitation to survey sites before and after completion of the new highway and as a function of distance to the *** occupancy declined from 0.81 to 0.35 between the twohighway and as a function of distance to the *** occupancy declined from 0.81 to 0.35 between the two s

关键词： landscape changes mammalian responses occupancy models transportation infrastructure Ursus americanus.

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