Peter E. Kelly completed his M.Sc. at the University of Western Ontario before joining the Cliff Ecology Research Group in the Department of Botany at the University of Guelph. He has devoted the last fifteen years to studying the ecology of the old-growth cedar forests of the Niagara Escarpment. He is co-author, with Douglas W. Larson of Cliff Ecology, published in 2000 by Cambridge University Press.