Identification of functional corridors with movement characteristics of brown bears on the Kenai Peninsula,Alaska |
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| Authors: | Tabitha A Graves Sean Farley Michael I Goldstein Christopher Servheen |
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| Institution: | (1) College of Forestry and Conservation, University of Montana, USGS Field Station, GNP, West Glacier, MT 59936, USA;(2) Alaska Department of Fish & Game, Division of Wildlife Conservation, 333 Raspberry Road, Anchorage, AK 99518, USA;(3) USDA Forest Service, Alaska Region, P.O. Box 21628, Juneau, AK 99802, USA;(4) USFWS, College of Forestry and Conservation, University of Montana, University Hall, Room 309, Missoula, MT 59812, USA |
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| Abstract: | We identified primary habitat and functional corridors across a landscape using Global Positioning System (GPS) collar locations
of brown bears (Ursus arctos). After deriving density, speed, and angular deviation of movement, we classified landscape function for a group of animals
with a cluster analysis. We described areas with high amounts of sinuous movement as primary habitat patches and areas with
high amounts of very directional, fast movement as highly functional bear corridors. The time between bear locations and scale
of analysis influenced the number and size of corridors identified. Bear locations should be collected at intervals ≤6 h to
correctly identify travel corridors. Our corridor identification technique will help managers move beyond the theoretical
discussion of corridors and linkage zones to active management of landscape features that will preserve connectivity. |
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| Keywords: | Connectivity Fragmentation Habitat Highways Linkage zones Ursus arctos |
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