Natural Resources Research Institute Technical Report

Release 1.0Crews from the Minnesota Department of Natural Resources captured 51 bats in Whitewater State Park and WMA from June 15th–18th, 2016. Bats of 2 species were captured during mist-netting surveys. We captured five individuals of our target species, the northern long-eared bat, and attached transmitters to four pregnant females. These four bats were tracked to 11 unique roost trees of 7 species. During emergence counts we counted from 1 to 28 bats emerging from these roost trees. Roost trees varied in both DBH and height, as well as decay stage. The roosting patterns we observed at Whitewater State Park and WMA were similar to roosting patterns we have observed in other areas of Minnesota, where bats appear to be using a variety of available trees. This report details work done in Whitewater State Park and WMA as part of a statewide study of northern long-eared bats. A report summarizing results of the statewide project will be available in early 2017.Land, Water and Environment, Natural Resources Research Institute, University of Minnesota Duluth, Duluth, MN; Minnesota Biological Survey, Minnesota Department of Natural Resources, St. Paul, MN; Division of Ecological and Water Resources, Minnesota Department of Natural Resources, St. Paul, MN; Funding for this project was provided by the Minnesota Environment and Natural Resources Trust Fund (ENRTF) as recommended by the Legislative‐Citizen Commission on Minnesota Resources (LCCMR)