When wolves were restored to Yellowstone National Park beave

When wolves were restored to Yellowstone National Park, beaver populations declined aspen populations decreased elk foraging behavior changed willow populations increased

Solution

The elk foraging behaviour changed with the reintroduction of wolves. Since the number of wolves increased, they fed on elk thus driving them away from the Aspen\'s. This increased the size n height of Aspen\'s due to decreased foraging of elk. With the increased height of the aspen n willow trees, the number of birds for beaver dams also increased which led to higher moisture availability further aiding to the increase in height of the aspens.