This weekend's Washington Post featured "A Gnawing Problem On Assateague Island" which reminded me of a similiar situation that I wrote about in my blog on Cumberland Island, GA. In both places, the wild horse population is eating plants that are vital to keeping the ecosystems in balance.
The problem is on the Maryland half of Assateague Island. On the Virginia half, the ponies are owned by the Chincoteague Fire Department and auctioned off after an annual Pony Swim every summer. The Maryland Assateague ponies are governed by the National Park Service, who is grappling with a solution.
You can read the article by David A. Fahrenthold here.