Scientists puzzled by 30,000 chinook that seem to be missing from Yukon River

Salmon counts on both sides of the Canada-U.S. border in 2020 were discussed recently at a meeting of the Yukon River Panel. One finding stood out. Last year about 77,000 chinook salmon were counted swimming by the Pilot Sonar station near the mouth of the Yukon River in Alaska. About 1,750 kilometres upriver, at the Eagle Sonar station, just before the Alaska-Yukon border, about 49,500 were counted. This could mean fish are dying or being miscounted, or that harvesting is going unreported, though there is no evidence of that. All parties agree that it’s a mystery and requires investigation. >click to read< 19:25

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