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Effects of acoustic deterrents on foraging bats

January 2, 2012

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.

Publication Year 2012
Title Effects of acoustic deterrents on foraging bats
DOI 10.2737/NRS-RN-129
Authors Joshua B. Johnson, W. Mark Ford, Jane L. Rodrigue, John W. Edwards
Publication Type Report
Publication Subtype Federal Government Series
Series Title Research Note
Series Number NRS-129
Index ID 70193780
Record Source USGS Publications Warehouse
USGS Organization Coop Res Unit Leetown