"Mine Pollution Genetically Isolates River Trout, Study Finds"

A study by the universities of Exeter and Cardiff reveals that brown trout in metal-polluted rivers across the British Isles are genetically isolated from other trout populations. This isolation, driven by the ability to tolerate toxic metals, has led to reduced genetic diversity, making these trout more vulnerable to future environmental changes. The research highlights the need to reduce mine water wash-out and remove physical barriers in rivers to mitigate genetic isolation.