Wolves culled the elk. Fewer elk means more aspens can grow. More beavers are attracted to the trees. It's called a trophic ...
"I will continue to do what I can." Lawmakers reject attempts to ban ghastly hunting tactic: 'I hate what this says about ...
It appeared that the aspen trees had stopped regenerating around ... and Beschta, R. L. (2003). Wolf reintroduction, predation risk, and cottonwood recovery in Yellowstone National Park.