1. Ocean Associates Inc., under contract to Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 2725 Montlake Boulevard East, Seattle, WA 98112, USA.
2. Fish Ecology Division, Northwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 2725 Montlake Boulevard East, Seattle, WA 98112, USA.
3. Fisheries Ecology Division, Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA, 110 McAllister Way, Santa Cruz, CA 95060, USA.
4. Center for Watershed Sciences, University of California Davis, 1 Shields Avenue, Davis, CA 95616, USA.
5. US Fish and Wildlife Service, 850 S. Guild Avenue, Suite 105, Lodi, CA 95240, USA.