1. Illinois Natural History Survey , University of Illinois , 1816 S. Oak Street , Champaign, IL 61820 , USA
2. Department of Forest and Wildlife Ecology , University of Wisconsin , Madison, WI , USA
3. Natural Resources , Northland College , 1411 Ellis Ave S , Ashland, WI 54806 , USA
4. Planning and Resource Management , Apostle Islands National Lakeshore , 415 Washington Ave , Bayfield, WI 54814 , USA