TORONTO — An expert tribunal was entitled to conclude a proposed wind farm would devastate a population of already threatened turtles, Ontario’s top court heard Monday.

The case, which pits turtles against turbines, could have widespread repercussions as to how endangered species are protected across Canada, and raises questions about the protection of unspoiled areas.

At issue is a proposed nine-turbine wind farm at Ostrander Point south of Belleville on the shore of Lake Ontario.