Movements of brown bears to obtain resources are often affected by anthropogenic influences, structure of the landscape, and foraging opportunities. Analyzing and providing connectivity for brown bears throughout their range is important for their successful conservation and management. Movement corridors for brown bears on the Kenai Peninsula were primarily associated with riparian areas and associated low-elevation valleys because of riparian areas high productivity and efficient movement by brown bears. These areas coincided with major transportation routes on the Kenai Peninsula. The pinch points within those corridors identified likely road-crossing areas for brown bears. That information allowed landscape and transportation planners to focus management activities in key areas to promote brown bear movement across roadways, maintain connectivity within and among populations on the Kenai Peninsula, and reduce the potential for wildlife vehicle collisions. Successful conservation of brown bears depended on land management that preserved a variety of high-quality habitat patches and corridors. Connectivity allowed brown bears to access resource patches during day-to-day and seasonal movements, facilitated dispersal, and encouraged gene flow. Providing for connectivity may include road crossing structures to large landscape corridors and is often a critical part of conservation plans for species of concern.

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Movement Patterns and Potential Corridors for Brown Bears on the Kenai Peninsula, Alaska, USA

  • Lowell H. Suring,
  • James S. Begley,
  • William L. Gaines

摘要

Movements of brown bears to obtain resources are often affected by anthropogenic influences, structure of the landscape, and foraging opportunities. Analyzing and providing connectivity for brown bears throughout their range is important for their successful conservation and management. Movement corridors for brown bears on the Kenai Peninsula were primarily associated with riparian areas and associated low-elevation valleys because of riparian areas high productivity and efficient movement by brown bears. These areas coincided with major transportation routes on the Kenai Peninsula. The pinch points within those corridors identified likely road-crossing areas for brown bears. That information allowed landscape and transportation planners to focus management activities in key areas to promote brown bear movement across roadways, maintain connectivity within and among populations on the Kenai Peninsula, and reduce the potential for wildlife vehicle collisions. Successful conservation of brown bears depended on land management that preserved a variety of high-quality habitat patches and corridors. Connectivity allowed brown bears to access resource patches during day-to-day and seasonal movements, facilitated dispersal, and encouraged gene flow. Providing for connectivity may include road crossing structures to large landscape corridors and is often a critical part of conservation plans for species of concern.