Loch Ken biodiversity 'destroyed' by invasive crayfish

Mr Fergusson said the ecosystem had been "virtually wiped out" by the crayfish in Loch Ken

A Scots loch has seen its biodiversity virtually wiped out by an "invasive alien species", according to an MSP.

Alex Fergusson said North American signal crayfish had "almost completely destroyed" the biodiversity of Loch Ken in Dumfries and Galloway.

Holyrood is updating its strategy on the subject with a a global target to halt biodiversity loss by 2020.

Mr Fergusson said the situation on the loch showed there was a "lot of ground to make up" on the problem.

"I look out on to Loch Ken in Galloway from my home, a loch within which the biodiversity has been almost completely destroyed by the frighteningly rapid and completely unchecked and uncontrolled expansion of American signal crayfish," said the Conservative MSP.

Ecosystems under threat

"An ecosystem has been virtually wiped out, ironically, within the Galloway and South Ayrshire biosphere now recognised by Unesco as 'a good way to demonstrate good nature conservation'.

"This is a slightly odd way to demonstrate it."

He said it mirrored the situation worldwide where ecosystems were under threat.

Continued:  http://www.bbc.co.uk/news/uk-scotland-south-scotland-21078480