Don Waller is a forest ecologist, conservation biologist and evolutionary biologist. He taught ecology, evolution, and conservation biology at the University of Wisconsin-Madison as the J.T. Curtis Professor of Botany and Environmental Studies until 2019. His recent research focuses on how habitat fragmentation, climate change, aerial N deposition, invasive species, and deer browsing drive long-term ecological change. Dr. Waller works to apply his science to improve how we manage forests, wildlife, and habitats that depend on recurrent disturbance. He co-authored Wild Forests: Conservation Biology and Public Policy (Island Press 1994) and edited The Vanishing Present: Shifts in Wisconsin’s lands, waters, and wildlife (Univ. of Chicago Press, 2008). He is helping to develop the Superior Bio-Conservancy and serves as a science advisor to the Environmental Law and Policy Center. His is a Fellow of the American Association for the Advancement of Science and the Rewilding Institute.