Pacific Salmon and Steelhead Production in a Changing Climate: Past, Present, and Future Edited by: Shigehiko Urawa, Marc Trudel, Richard J. Beamish, Edward V. Farley, Jr., Jeffrey R. Guyon, James R. Irvine, Toshihiko Saito, Alexander V. Zavolokin, Olga S. Temnykh, and Nancy D. Davis North Pacific Anadromous Fish Commission BULLETIN NUMBER 6 Vancouver, Canada, 2016