1. Chemistry Department, Trent University, 1600 West Bank Drive, Peterborough, Ontario, Canada K9J 7B8, Tetra Tech Inc., 180 Forestwood Drive, Oakville, Ontario, Canada L6J 4E6, Chesapeake Biological Laboratory, University of Maryland, P.O. Box 38, Solomons, Maryland 20688, University of Wisconsin−Water Resources Institute, 1975 Willow Drive, Madison, Wisconsin 53706-1103, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba, Canada R3T 2N6, U.S. Geological Survey−WRD, 8505 Research Way,...