Wolf, Ticks, Send Michigan Moose Numbers Plummeting

The moose population on a remote Lake Superior island is down sharply again this year. But the numbers of the moose’s only predators–wolves–are holding steady, according to the latest figures from what may be the longest running study of any predator-prey system in the world.

The study on Lake Superior’s Isle Royale in the Isle Royale National Park began in 1958. The nearly five decades of data are providing scientists with an unprecedented look at the oscillating relationship between moose and wolves.