January 12, 2022 — Melting glaciers in Alaska and British Columbia could open up new stream habitat for Pacific salmon – conceivably almost equal to the length of the Mississippi River by 2100, under one scenario of “moderate” climate change.
But on balance a warming climate will continue to take its toll on salmon populations on the U.S. Pacific coast.
Researchers from Simon Fraser University in British Columbia and the NMFS Northwest Fisheries Science Center in Seattle, Wash., published their findings from modeling glacier retreat in the journal Nature Communications, looking at how new salmon spawning streams might appear as ice melts, bedrock gets exposed and new streams thread over the exposed landscape.
“We predict that most of the emerging salmon habitat will occur in Alaska and the transboundary region, at the British Columbia – Alaska border, where large coastal glaciers still exist,” lead author professor Kara Pitman of Simon Fraser University says in a NMFS summary of the findings.