Yellowstone transformed 15 years after the return of wolves

The study this story is based on is available in ScholarsArchive@OSU: http://hdl.handle.net/1957/25603

CORVALLIS, Ore. – On the 15th anniversary of the return of wolves to Yellowstone National Park, a quiet but profound rebirth of life and ecosystem health is emerging, scientists conclude in a new report.

For the first time in 70 years, the over-browsing of young aspen and willow trees has diminished as elk populations in northern Yellowstone declined and their fear of wolf predation increased. Trees and shrubs have begun recovering along some streams, providing improved habitat for beaver and fish. Birds and bears also have more food.