Robert J. Fletcher, Jr., is the Miriam Rothschild Professor of Conservation Biology at the University of Cambridge. His research interests include landscape and spatial ecology, conservation biology, population biology, animal behavior, and quantitative modeling. Marie-Josée Fortin is professor of Spatial Ecology at the University of Toronto, fellow of the Royal Society of Canada, and Web of Science Highly Cited Researcher in Environment/Ecology. Her research interests are at the interface of ecology, conservation, and spatial statistics.