climate change caused water temperatures in 70% of rivers to rise beyond safe levels on at least one day. Records showed they surpassed 23C, a dangerously high temperature that can result in stress and abnormal behavior in salmon.Since Atlantic salmon live in cold waters, they can’t survive in summer water temperatures above 33C.
While temperatures haven’t exceeded 23C yet, it’s a possibility without direct climate action.Luckily, trees offer a natural way to shield salmon from rising temperatures.
However, marine scientists discovered that only 35% of Scotland’s rivers had optimal tree cover. ADVERTISEMENT Lorraine Hawkins, the river director for the Dee District Salmon Fishery Board, said that the rivers and burns in Scotland provide nurseries for young fish.
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