Retreating glaciers are creating new salmon habitat, B.C. study shows

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The study published Tuesday in Nature Communications projects that more than 6,000 kilometres of new streams could be accessible to salmon by 2100, and just…

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Of the total kilometres of new streams that could be gained with “complete deglaciation,” the study projects 23 per cent would be created by 2050.

The study cites earlier research that found a population of pink salmon grew to include more than 5,000 spawning adults within 15 years of a new stream and lake system emerging following glacier retreat in Glacier Bay, Alaska. The analysis suggests the greatest gains in potential salmon streams would occur where large glaciers are located in low-slope terrain near the coast, with the highest increase of 27 per cent projected in the Gulf of Alaska.

Salmon are very good at homing or finding their way to their usual spawning grounds, but between one and 10 per cent of a population may stray, he said.

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