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    Author(s): Joshua B. Johnson; W. Mark Ford; Jane L. Rodrigue; John W. Edwards
    Date: 2012
    Source: Res. Note NRS-129. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 5 p.
    Publication Series: Research Note (RN)
    Station: Northern Research Station
    PDF: View PDF  (147.33 KB)

    Description

    Significant bat mortality events associated with wind energy expansion, particularly in the Appalachians, have highlighted the need for development of possible mitigation practices to reduce or prevent strike mortality. Other than increasing turbine cut-in speed, acoustic deterrents probably hold the greatest promise for reducing bat mortality. However, acoustic deterrent effectiveness and practicality has not been experimentally examined and is limited to site-specific case studies. Accordingly, we used a crossover experimental design with prior control period to show that bat activity was reduced 17.1 percent by the deployment of ultrasonic deterrents placed around gauged watershed weir ponds on the Fernow Experimental Forest in West Virginia. We caution that while our results should not be extrapolated to the scope of a typical wind energy production facility, the results warrant further research on the use of acoustic deterrents to reduce bat fatalities.

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    Citation

    Johnson, Joshua B.; Ford, W. Mark; Rodrigue, Jane L.; Edwards, John W. 2012. Effects of acoustic deterrents on foraging bats. Res. Note NRS-129. Newtown Square, PA: U.S. Department of Agriculture, Forest Service, Northern Research Station. 5 p.

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    Keywords

    acoustic, Anabat, bats, Fernow Experimental Forest, West Virginia, wind energy

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