1. Department of Plant Biology, Carnegie Institution for Science, Stanford, CA 94305, USA.
2. Department of Biology, Stanford University, Stanford, CA 94305, USA.
3. Department of Global Ecology, Carnegie Institution for Science, Stanford, CA 94305, USA.
4. Department of Zoology, University of British Columbia, Vancouver, Canada.
5. Biodiversity Research Centre, University of British Columbia, Vancouver, Canada.
6. Department of Computer Science, Stanford University, Stanford, CA 94305, USA.
7. Department of Ecology and Evolutionary Biology, University of California, Los Angeles, CA 90095, USA.
8. Center for Macroecology, Evolution and Climate, GLOBE Institute, University of Copenhagen, Copenhagen, Denmark.
9. Department of Genetics, Stanford University, Stanford, CA 94305, USA.