1. LGL Limited environmental research associates, 22 Fisher Street, P.O. Box 280, King City, Ontario L7B 1A6, Canada.
2. Brican Flight Systems, 54 Van Kirk Drive, Brampton, Ontario L7A 1B1, Canada.
3. Department of Fisheries and Oceans Canada, 501 University Crescent Winnipeg, Manitoba, R3T 2N6, Canada.