Spamming streams with hatchery salmon can disrupt ecosystems, study finds

Mongabay
May 9, 2023, 6:24 pm138 pts
Every year, 22 million sockeye salmon begin life some 420 kilometers, or about 260 miles, inland from the Alaskan coast, in plastic bins. They’re at the Gulkana hatchery, the largest sockeye salmon hatchery in the world — but just one of countless hatcheries around the globe that release native fish into…

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