Affiliation: | Author Sims is with the Dept. of Fisheries &Oceans, Box 550, Halifax, Nova Scotia, B3J 2S7, Canada. Author Farn is with the Dept. of Fisheries &Oceans, 2250 South Boundary Road, Burnaby, British Columbia, V5M 4L9, Canada. Author York is with the Dept. of Fisheries &Oceans, 501 University Crescent, Winnipeg, Manitoba, R3T 2N6, Canada. |