1 The Betty and Gordon Moore Center for Science and Oceans, Conservation International, Arlington, VA, USA. Electronic address: lhannah@conseervation.org.
2 United States Geological Survey, Sacramento, CA, USA.
3 Conservation Biology Institute, La Mesa, CA, USA.
4 Department of Environmental Science, Policy and Management, University of California, Berkeley, CA, USA.
5 Department of Biology, University of Washington, Seattle, WA, USA.
6 Bren School of Environmental Science and Management, University of California, Santa Barbara, CA, USA.