1. Environmental Sciences Graduate Program; Oregon State University; Corvallis OR 97330 USA
2. United States Department of Agriculture-Agricultural Research Service; Burns OR 97720 USA
3. United States Department of Agriculture-Agricultural Research Service; Boise ID 83712 USA
4. College of Forestry; Oregon State University; Corvallis OR 97330 USA
5. Sierra Foothills Research and Extension Center; University of California Division of Agriculture and Natural Resources; Browns Valley CA 95918 USA