Trout living in rivers polluted by metal from old mines across the British Isles are genetically “isolated” from other trout, new research shows. The work appears in Diversity and Distributions. Trout living in rivers polluted by metal from old mines across the British Isles are genetically “isolated” from other trout, new research shows. The work appears in Diversity and Distributions. Plants & Animals Ecology Phys.org – latest science and technology news stories