1. R. Kirby () (), C. Freeh and J. N. Pauli, Dept of Forest and Wildlife Ecology, Univ. of Wisconsin-Madison, 1630 Linden Drive, Madison, WI 53706, USA.
2. J. H. Gilbert, Great Lakes Indian Fish and Wildlife Commission, Odanah, WI, USA.
3. JF Olson, Wisconsin Dept of Natural Resources, Ashland, WI, USA.