More Alaskan salmon caught here end up in the dog pot these days, their orange-pink flesh fouled by disease that scientists have correlated with warmer water in the Yukon River.
The sorting of winners and losers at Moore’s riverbank fish camp illustrates what scientists have been predicting will accompany global warming: Cold-temperature barriers are giving way, allowing parasites, bacteria and other disease-spreading organisms to move toward higher latitudes.
“Climate change isn’t going to increase infectious diseases but change the disease landscape,” said marine ecologist Kevin D. Lafferty, who studies parasites for the U.S. Geological Survey. “And some of these surprises are not going to be pretty.”