Michigan Tech biologist makes mark on Isle Royale wildlife Rolf Peterson, who lives in the Upper Peninsula, has helped to demystify a species that is frequently misunderstood.

Retired professor Rolf Peterson's research on moose and wolves in a Lake Superior park illuminates the roles of predator and prey.

"We're dealing with the most complicated systems in the universe, and we hardly even know what the moving parts are," says Rolf Peterson, a research ecologist at Michigan Tech.

Rolf Peterson is a research professor at Michigan Technological University. In addition to studying wolf-prey relationships at Isle Royale National Park for more than 40 years, he has experience ...

Rolf Peterson's basement is full of the tools he thought he would be using in retirement. Indeed, the tools are there waiting for him, but Rolf, who describes himself as an inveterate do-it ...

Rolf Peterson, 86, and his wife Judy, 81, are shown next to their front lawn nativity scene at their home in Yorba Linda on Thursday, December 10, 2020. They have putting out the nativity scene ...

Wolves, their count up by three, stabilize and organize. Moose, down by 379, starve and decline. Michigan Technological University researchers discuss the latest populations in the 64th Isle Royale ...

DULUTH — Researcher Rolf Peterson and a pilot were tracking a lone wolf from a small plane over Lake Superior last week when they witnessed something for the first time: The wolf, trotting along ...

Researchers from Michigan Technological University, Sarah Hoy, John Vucetich and Rolf Peterson, estimate 30 wolves now roam the island, down one from last winter’s survey, up two from 2022 and a ...

A wolf on Michigan's Isle Royale that fell into a partially-frozen bay of Lake Superior tries to get the ice off its fur. Photo provided by Rolf Peterson and Michigan Technological University.

Even though relatively few moose calves appear to be surviving to adulthood, there’s no reason to worry about the moose’s immediate future, Michigan Tech biologist Rolf Peterson said.

Rolf Peterson, a retired Michigan Tech professor, became one of the leading experts on wolves during 55 years of studying wildlife on Isle Royale.