1. Department of Botany and Plant Pathology Oregon State University Corvallis Oregon USA
2. Smithsonian Tropical Research Institute Panama City Panama
3. Forest Biodiversity Research Network, Forest Ecosystems and Society Oregon State University Corvallis Oregon USA
4. Department of Biology St. John Fisher College Rochester New York USA
5. School of Life Sciences and Lyon Arboretum University of Hawai'i at Mānoa Honolulu Hawaii USA
6. Charles Darwin Foundation Puerto Ayora, Galapagos Ecuador
7. Department of Fisheries and Wildlife Oregon State University Corvallis Oregon USA
8. Division of Forest Sciences, School of Agricultural, Forest & Food Sciences Bern University of Applied Sciences Zollikofen Switzerland
9. Swiss Ornithological Institute Sempach Switzerland