1. Department of Forestry and Wildland Resources; Humboldt State University, 1 Harpst St; Arcata CA 95521 U.S.A.
2. California Department of Parks and Recreation, CA State Parks; Crescent City CA 95531 U.S.A.
3. Department of Mathematics; Humboldt State University, 1 Harpst St; Arcata CA 95521 U.S.A.