Acoustic monitoring for bats at Apostle Islands National Lakeshore: Data summary report, 2015–2019
Goodwin KR and Kirschbaum AA. 2021. Acoustic monitoring for bats at Apostle Islands National Lakeshore: Data summary report, 2015–2019. Natural Resource Data Series. NPS/GLKN/NRDS—2021/1320. National Park Service. Fort Collins, Colorado
The Great Lakes Inventory and Monitoring Network initiated an acoustic monitoring program for bats in 2015. This report presents results for 2015–2019 surveys at Apostle Islands National Lakeshore. Acoustic recordings were analyzed using the software program Kaleidoscope Pro and a subset of files were manually reviewed to confirm species identifications. The six bat species previously documented at the park were reconfirmed. These include big brown bat, eastern red bat, hoary bat, silver-haired bat, little brown bat, and northern long-eared bat. All except the northern long-eared bat were verified through manual vetting. A seventh species, the tricolored bat, was also documented. The tricolored bat has not been physically captured in the park; however our acoustic data suggests it is present based on manually verified recordings from two different sites. Activity levels for big brown bat, eastern red bat, hoary bat, and silver-haired bat appear to be stable or increasing slightly. Activity levels for little brown bat, northern long-eared bat, and tricolored bat show decreasing trends.
- Type
- Published Report
- Authors
- Goodwin, Katy; Kirschbaum, Alan
- Date of Issue
- 2021-04
- Publisher
- National Park Service
- Units
- APIS , GLKN , NRSS
- Keywords
- bats, GLKN General, Wisconsin