1. Department of Forest Ecosystems and Society, Oregon State University, Corvallis, OR
2. USDA-ARS Pollinating Insect Research Lab, Utah State University, Logan, UT
3. School of Biological Sciences, Washington State University, Vancouver, WA
4. USDA Forest Service, Southern Research Station, Athens, GA
5. Forest Biodiversity Research Network, Oregon State University, Corvallis, OR
6. Bern University of Applied Sciences, School of Agricultural, Forest and Food Sciences HAFL, Zollikofen, Switzerland