Brian J. Palik, PhD, is a research ecologist with the United States Department of Agriculture Forest Service, Northern Research Station, Grand Rapids, MN, USA. He has published widely on the ecological sustainability of managed forests and related fields. Anthony W. D’Amato, PhD, is Professor of Silviculture and Applied Forest Ecology and Director of the Forestry Program at the University of Vermont, USA. He has researched and published extensively on long-term forest dynamics and silvicultural strategies to foster adaptive forests.