The Salmon and Trout Association (S&TA), Britain’s leading gamefish conservation body, is warning that a recently published comprehensive survey of Atlantic salmon rivers in one province of eastern Canada has concluded that beavers can have a major adverse impact on fish populations. The warning comes on the eve of the release of beavers into the wild in Knapdale, Argyll.The Salmon and Trout Association (S&TA), Britain’s leading gamefish conservation body, is warning that a recently published comprehensive survey of Atlantic salmon rivers in one province of eastern Canada has concluded that beavers can have a major adverse impact on fish populations. The warning comes on the eve of the release of beavers into the wild in Knapdale, Argyll.