Acoustic monitoring for bats at Grand Portage National Monument: Data summary report for 2016–2019
Goodwin KR and Kirschbaum AA. 2021. Acoustic monitoring for bats at Grand Portage National Monument: Data summary report for 2016–2019. Natural Resource Data Series. NPS/GLKN/NRDS—2021/1314. National Park Service. Fort Collins, Colorado
The Great Lakes Inventory and Monitoring Network initiated acoustic bat monitoring at Grand Portage National Monument in 2016. This report presents results for the 2016–2019 surveys. 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. A seventh species, the tricolored bat, was also documented. Tricolored bats have not been physically captured in the park, but our acoustic data suggest this species is present. Activity levels for big brown bat, hoary bat, and silver-haired bat appear to be stable. Activity levels for little brown bat, northern long-eared bat, eastern red bat, and tricolored bat show decreasing trends.
- Type
- Published Report
- Authors
- Goodwin, Katy; Kirschbaum, Alan
- Date of Issue
- 2021-02
- Publisher
- National Park Service
- Units
- GLKN , GRPO , NRSS
- Keywords
- bats, GLKN General, Minnesota