Animals and Trees

“The gray wolf, for instance, is a keystone species,” said Irmak Sirer, a PhD candidate in the lab of Luis Amaral, professor of chemical and biological engineering at McCormick. “When the wolves disappeared from Yellowstone National Park for 70 years, a broad array of species bottomed out. When they were reintroduced in 1995, willows, songbirds, beavers, and many other species suddenly flourished.”