Acidic oceans, warming rivers devastate salmon runs

salmon

What is the future of the Columbia River and its salmon? Look to 2015.

That year’s extraordinary combination of overheated river water and low flows killed hundreds of thousands of returning sockeye salmon, devastating a run that had rebounded from near-extinction.

Millions of new sockeye and steelhead smolts migrating the opposite way, to the Pacific, died throughout the river system; only 157 endangered sockeye made it back to the Sawtooth Valley this year.

By the middle of this century, scientists suggest, the temperatures we saw in 2015 will be the norm. The low snowpack and streamflows were examples of what the Pacific Northwest should expect at the end of this century due to rapid climate change caused by the burning of fossil fuels, climatologists say.

LINK (via: The Idaho Statesman)

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