1. Office of Applied Science, Wisconsin Department of Natural Resources , 107 Sutliff Avenue, Rhinelander, Wisconsin 54501 , USA
2. United States Fish and Wildlife Service , 1201 Oak Ridge Drive, Suite 320, Fort Collins, Colorado 80525 , USA
3. Division of Agriculture and Natural Sciences, College of the Ozarks , 100 Opportunity Avenue, Point Lookout, Missouri 65726 , USA
4. Office of Applied Science, Wisconsin Department of Natural Resources , 1300 W. Clairemont Street, Eau Claire, Wisconsin 54701 , USA