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, 1630 Linden Drive, Madison, WI 53706, 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