Acoustic monitoring for bats at Voyageurs National Park: Data summary report for 2015–2019
Goodwin KR and Kirschbaum AA. 2022. Acoustic monitoring for bats at Voyageurs National Park: Data summary report for 2015–2019. Natural Resource Data Series. NPS/GLKN/NRDS—2022/1342. National Park Service. Fort Collins, Colorado. https://doi.org/10.36967/nrds-2289997
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 Voyageurs National Park. Acoustic recordings were analyzed using the software program Kaleidoscope Pro and a subset of files were manually reviewed to confirm species identifications. The three bat species previously documented at the park were reconfirmed: silver-haired bat, little brown bat, and northern long-eared bat. Four additional species were documented through both automated Kaleidoscope classification and manual vetting: big brown bat, eastern red bat, hoary bat, and tricolored bat. Apart from the tricolored bat, the presence of these species was expected since the park lies well within their known ranges. The park is northwest of the typical range of the tricolored bat, but this species has been recorded in other parts of northern Minnesota, which prompted us to include it in our expanded analysis. We obtained one manually verified tricolored bat recording, suggesting that this species is at least occasionally present in the park. Activity levels for big brown bat, hoary bat, and silver-haired bat appear to be stable or increasing slightly. Activity levels for eastern red bat, little brown bat, northern long-eared bat, and tricolored bat show decreasing trends.
- Type
- Published Report
- Authors
- Goodwin, Katy; Kirschbaum, Alan
- Date of Issue
- 2022-01
- Publisher
- National Park Service
- DOI
- 10.36967/nrds-2289997
- Units
- GLKN , NRSS , VOYA
- Keywords
- bats, GLKN General, Minnesota