Pollution from agriculture, sewage-treatment works, septic tanks and chemicals from many sources is killing the UK rivers.
“It is an often-overlooked fact that invertebrates essentially run our planet. They make up the majority of species on earth and sustain all life. Aquatic insects are invaluable in unlocking the true story of water quality in our rivers. Much of the pollution threatening our waters is subtle and invisible to the naked eye. By looking at what species were there, and which are missing, for the first time we have been able to truly quantify the invisible stressors deteriorating water quality throughout England.”
Lauren Mattingley, S&TC Scientific Officer
Also look at:
https://flyfishing-blog.com/flyfishing-blog.com/2018/10/08/salmon-trout-conservation-scotland-on-the-one-show/
https://flyfishing-blog.com/flyfishing-blog.com/2018/06/01/gary-graham-wins-first-place-award-for-conservation-writing/
https://flyfishing-blog.com/flyfishing-blog.com/2018/03/20/london-fly-fishing-fair-puts-the-spotlight-on-conservation/