Mortality of Bats at a Large-Scale Wind Power Development at Buffalo Ridge, Minnesota

Journal Article

Title: Mortality of Bats at a Large-Scale Wind Power Development at Buffalo Ridge, Minnesota
Publication Date:
January 01, 2003
Journal: The American Midland Naturalist
Volume: 150
Issue: 2
Pages: 332-342
Publisher: BioOne
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Citation

Johnson, G.; Erickson, W.; Strickland, M.; Shepherd, M.; Shepherd, D.; Sarappo, S. (2003). Mortality of Bats at a Large-Scale Wind Power Development at Buffalo Ridge, Minnesota. The American Midland Naturalist, 150(2), 332-342.
Abstract: 

In 1994 a major wind power development project was initiated in southwest Minnesota that may eventually produce 425 megawatts (MW) of electricity. The wind plant currently consists of 3 phases that total 354 turbines capable of generating 236 MW. During a study conducted from 1996–1999 to assess effects of wind power development on wildlife, 184 bat collision fatalities were documented within the wind plant. Hoary bats (Lasiurus cinereus) and eastern red bats (L. borealis) comprised most of the fatalities. After correcting bat fatality estimates for searcher efficiency and scavenger removal rates, we estimated that the number of bat fatalities per turbine ranged from 0.07 per y at the Phase 1 wind plant to 2.04 per y at the Phase 3 wind plant. The timing of mortalities, and other factors, suggest that most mortality involves migrant rather than resident breeding bats.

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