1. Environment Canada, National Water Research Institute, Aquatic Ecosystem Protection, Research Branch, 867 Lakeshore Road, Burlington, Ontario, Canada L7R 4A6, Institute of Ocean Sciences, Fisheries and Oceans Canada, Sydney, British Columbia, Canada V8L 4B2, Wadsworth Center, New York State Department of Health, Empire State Plaza, P.O. Box 509, Albany, New York 12201-0509, Fisheries Section, Warnell School of Forest Resources, University of Georgia, Athens, Georgia 30602, Department of Chemistry,...