Plant succession of old fields in the Dust Bowl. Southwestern Naturalist 19: 227-239. ###>The biodiversity crisis in southern Saskatchewan: a landscape perspective,, pages 13-16 in Thorpe, J., Steeves, T.A. et M. Gallop (éd.), Proceedings of the Fifth Prairie Conservation and Endangered Species Conference, Provincial Museum of Alberta, Natural History Occasional Paper no 24, Edmonton (Alberta).