Wolves preying on beavers in Minnesota reshape wetlands
The IndependentFor free real time breaking news alerts sent straight to your inbox sign up to our breaking news emails Sign up to our free breaking news emails Sign up to our free breaking news emails SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our privacy policy One spring afternoon in 2015, biologist Thomas Gable followed signals from a gray wolf’s GPS tracking collar to a small stream in Minnesota’s Voyageurs National Park. Wolves preying on beavers profoundly affect northern Minnesota's wetland ecosystems because dams built by individual beavers — those not associated with beaver colonies — quickly fall apart. The new research doesn't show wolves reduced the total beaver population in Voyageurs National Park, but that they influenced where beavers were able to build and maintain dams and ponds. “Beavers are so central to the way these boreal forests look that anything that affects beaver distribution is going to have a cascading effect,” said Rolf Peterson, a wildlife ecologist at Michigan Technological University who studies wolves in Michigan and was not involved in the new study.