Southern salmon populations face increased risk from a warming climate. New analysis of salmon ear bones shows outsized reliance on rarely used cold-water habitat for population survival through drought years — habitat that is expected to shrink under climate change.
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The author declares no competing interests.
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Buchanan, R.A. Rare migration strategy key during climate change. Nat. Clim. Chang. 11, 906–907 (2021). https://doi.org/10.1038/s41558-021-01192-6