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.

中文翻译：

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气候变化期间罕见的移民战略关键

南部鲑鱼种群面临气候变暖带来的风险增加。对鲑鱼耳骨的新分析表明，在干旱年份，人们过度依赖很少使用的冷水栖息地——栖息地预计会因气候变化而缩小。