Laboratory of Animal Ecology, Graduate School of Agriculture, Hokkaido University
Harry R. Carter
Humboldt State University, Department of Wildlife
S. Kim Nelson
U. S. Geological Survey, Biological Resources Division, Oregon Cooperative Fish and Wildlife Research Unit, Oregon State Univ., Dept. Fisheries and Wildlife
Published: March 20, 2002Received: January 10, 2002Available on J-STAGE: November 10, 2008Accepted: January 10, 2002
Advance online publication: -
Revised: -