1. Dept of Forest, Rangeland, and Fire Sciences; Univ. of Idaho; Moscow ID USA
2. Dept of Ecosystem and Conservation Sciences; Univ. of Montana; Missoula MT USA
3. Neptune and Company; Lakewood CO USA
4. Dept of Plant Biology; Univ. of Illinois; Urbana IL USA
5. Dept of Geology; Univ. of Illinois; Urbana IL USA