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Conclusions: Grizzly bears avoid high volume roads (25,000 vehicles/day). High quality habitat determines movement decisions relative to roads. Grizzly bears will cross high volume roads to access high-quality habitat. Grizzly bears use areas close to roads more than expected, in particular low-volume roads (10,000 vehicles/day). Prevent loss of habitat connectivity with the following mitigation: maintain high-quality habitat adjacent to roads, install continuous highway fencing and create wildlife passages. Thresholds/Learnings: Synopsis: The study examined the relationships among grizzly bears, their habitats and roads in Banff National Park, a protected area characterized by a major transportation corridor. This...
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Synopsis: This study examined the spatial patterns and factors influencing small terrestrial vertebrate road-kill aggregations in the Bow River Valley of Alberta, Canada. Mammal and bird road-kill indices were consistently higher on low volume parkway roads than on the high-speed, high volume Trans-Canada highway (TCH). Birds were more vulnerable to collisions than mammals on the TCH. Low volume parkway road-kills were less likely to occur on raised sections of road, and tended to occur close to vegetative cover far from wildlife passages and culverts. Highway sections with forested medians were less significant barriers to forest birds than open grassy medians. Since forest dwelling birds are reluctant to cross...
Synopsis: This book addresses issues of landscape fragmentation and ecology emanating from the construction and use of roads. The text highlights ecosystem implications of this type of linear disturbance in relation to the following topics: · Roads, vehicles, and transportation planning · Vegetation and roadsides · Wildlife populations and collision mortality · Water, sediment, and chemical flows · Aquatic ecosystems · Wind, noise, and atmospheric effects · Road networks and landscape fragmentation Conclusions: Book addresses issues of landscape fragmentation and ecology emanating from the construction and use of roads. The text highlights ecosystem implications...
    map background search result map search result map Relationships among grizzly bears, highways, and habitat in Banff-Bow Valley, Alberta, Canada. Spatial patterns and factors influencing small vertebrate fauna road-kill aggregations. Relationships among grizzly bears, highways, and habitat in Banff-Bow Valley, Alberta, Canada. Spatial patterns and factors influencing small vertebrate fauna road-kill aggregations.