Letting nature take its course: Wolves in Yellowstone National Park
Since the reintroduction of wolves to Yellowstone National Park in 1995, the park's ecosystem has become a deeply complex and heterogeneous system, aided by a strategy of minimal human intervention. The new study is a synthesis of 40 years of research on large mammals in Yellowstone National Park, conducted by University of Alberta ecologist Mark Boyce.
https://phys.org/news/2018-10-nature...ional.html#jCp