1. Department of Integrative Biology, University of CaliforniaBerkeley, Berkeley, California 94720-3140, Department of Renewable Resources, University of Alberta, Edmonton, AB Canada T6G 2E3, Department of Botany, University of Florida, Gainesville, Florida 32611-8526, Department of Biology, Southern Oregon University, Ashland, Oregon 97520-5071, Department of Earth System Science, University of CaliforniaIrvine, Irvine, California 92697-3100, Department of Biological Science, California State...