1. Department of Environmental Science, Policy and Management, University of California, Berkeley, CA
2. California Department of Forestry and Fire Protection, Fortuna, CA
3. Department of Botany and Plant Pathology, Oregon State University, Corvallis, OR
4. Horticultural Crops Research Unit, USDA Agricultural Research Service, Corvallis, OR
5. University of California Cooperative Extension, Humboldt and Del Norte Counties, Eureka, CA