1. Doctoral Student, Dept. of Civil and Environmental Engineering, Univ. of Washington, P.O. Box 352700, Seattle, WA 98195-2700 (corresponding author).
2. Assistant Professor, Dept. of Civil Engineering, Saint Louis Univ., 3450 Lindell Boulevard, McDonnell Douglas Hall Room 2051, St. Louis, MO 63103.
3. Professor, Dept. of Civil and Environmental Engineering, Univ. of Washington, P.O. Box 352700, Seattle, WA 98195-2700.
4. Habitat Connectivity Biologist, Washington Dept. of Transportation, 310 Maple Park SE, Olympia, WA 98504-7331.