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Nineteen proceedings papers from the Wetlands international symposium, Ontario, Canada, April 1994, focusing on current research in environmental gradients, boundaries, and buffers. The contributors present topics in vertical gradients in peatlands, urban intensification and environmental sustainability, the adaptive mechanisms of plants in wetland gradients, identification and boundary delineation, management goals, wetland buffers and runoff hydrology, and the use of vegetative buffer strips to protect wetlands in Southern Ontario. Includes illustrations and some photographs. Annotation c. by Book News, Inc., Portland, Or.