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abundance of pink adult Alaska Peninsula Aleutian Amgun Amur River average Bering Sea Bolsheretsk British Columbia British Columbia coast Cabin Creek Canada catch statistics chum salmon coast coastal density depensatory distribution dominance driftnet early East Kamchatka egg deposition environment escapement estimate estuary even-year factors FIGURE Fisheries Research fluctuations Fraser River Fraser River pink freshwater gravel high seas indicate Inlet Island July Kurile Islands larger length marine migration mothership fishery Neave north Kurile North Pacific numbers of fish observed occurred odd-year offshore fisheries Okhotsk Okhotsk Sea Pacific Salmon period permeability pink and chum pink salmon pink salmon catch pink salmon stocks predation Prince William Sound production ramie region relationship RICKER River pink salmon Sakhalin salmon eggs salmon fisheries Sashin Creek season Skeena River sockeye southeastern Alaska spawners spawning areas spawning grounds species Strait survival tion variability Wickett