Natural Resources Research Institute Technical Report

Release 1.0Crews from the University of Minnesota - Natural Resources Research Institute captured 27 bats in Itasca State Park from June 13th–17th, 2016. Bats of 6 species were captured or observed during mist-netting surveys. We captured six individuals of our target species, the northern long-eared bat, and attached transmitters to four adult females. These four bats were tracked to 14 unique roost trees of 6 species over 13 days. During emergence counts we counted from 1 to 26 bats emerging these roost trees. Roost trees varied in both DBH and height, as well as decay stage. The roosting patterns we observed at Itasca State Park 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 Itasca State Park 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; Biology Department, Swenson College of Science and Engineering, University of Minnesota Duluth, Duluth, 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)