Are wolves saving Yellowstone's aspen trees from elk?
Wednesday, September 1, 2010 - 11:07
in Earth & Climate
Previous research has claimed that the reintroduction of wolves to Yellowstone National Park in 1995 is helping restore quaking aspen in risky areas where wolves prowl. But apparently elk hungry for winter food had a different idea. They did not know they were supposed to be responding to a "landscape of fear."