TY - JOUR
TI - Pre-Construction Bat Activity At Four Wind Energy Sites in Northeastern British Columbia
AU - Nagorsen, D
AU - Robertson, I
AU - Sarell, M
T2 - Northwestern Naturalist
AB - We monitored pre-construction bat acoustic activity from 2007 to 2010 at 4 wind energy sites in northeastern British Columbia to determine nightly and seasonal activity patterns, relative detection rates of different species groups, and the implications for potential fatalities at northern wind facilities. Mean activity rates (August to September) ranged from 2.4 to 79.4 passes per detector-night at the 4 study areas. Activity differed between years for 3 study areas with multi-year data. Nightly variation in activity was pronounced, with wind speed and temperature recorded at meteorological towers explaining 47 to 61% of the variation in nightly activity. Detections were predominantly (60 to 96%) of Myotis bats. Only 1 to 18% of passes recorded at study areas were low-frequency bats (Big Brown Bat, Eptesicus fuscus; Silver-haired Bat, Lasionycteris noctivagans; Hoary Bat, Lasiurus cinereus), with L. cinereus accounting for 
DA - 2014/01//
PY - 2014
VL - 95
IS - 3
SP - 300
EP - 311
UR - http://www.bioone.org/doi/abs/10.1898/13-09.1
DO - 10.1898/13-09.1
LA - English
KW - Wind Energy
KW - Land-Based Wind
KW - Bats
ER -