Ocean Warming, Hatchery Fish Crowding In North Pacific Reducing British Columbia Sockeye Survival

The northeast Pacific Ocean from the Fraser River to the Bering Sea is warming, but it is also becoming more crowded with hatchery pink and chum salmon produced in Alaska and Russia. The competition for food by hatchery pink salmon in a warming ocean has resulted in a 15 percent drop in survival of sockeye salmon returning to the Fraser River and other streams in British Columbia, according to a study released this week.

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