About the Authors
Department of Biology, Dalhousie University, Halifax, Nova Scotia, Canada
Department of Geography, University of Hawaii, Honolulu, Hawaii, United States of America
United Nations Environment Programme World Conservation Monitoring Centre, Cambridge, United Kingdom
Microsoft Research, Cambridge, United Kingdom
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: CM DPT BW. Analyzed the data: CM DPT. Wrote the paper: CM DPT SA AGBS BW. Reviewed higher taxonomy: CM SA AGBS.