1. Puget Sound Institute University of Washington Tacoma Tacoma WA 98421 U.S.A.
2. University of Alaska Fairbanks, College of Fisheries and Ocean Sciences Juneau AK 99801 U.S.A.
3. Conservation Biology Division Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration Seattle WA 98112 U.S.A.
4. Department of Marine Science California State University Monterey Bay Seaside CA 93955 U.S.A.
5. Department of Biology Middlebury College Middlebury VT 05753 U.S.A.
6. Fish Ecology Division Northwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration Seattle WA 98112 U.S.A.
7. Pacific States Marine Fisheries Commission, Under contract to Northwest Fisheries Science Center National Marine Fisheries Service, National Oceanic and Atmospheric Administration Seattle WA 98112 U.S.A.