People can still fish in parts of a Cape Breton river famous for its Atlantic salmon, but other sections are temporarily closed due to warm waters and a local non-profit group says climate change is to blame. Until recently, the Margaree River's cool waters were ideal for trout and salmon, but within the last five years, parts of the river have been closed to angling during the summer, said Paul MacNeil, president of the Margaree Salmon Association.