1. Department of Biology, Trent University, 1600 West Bank Dr., Peterborough, Ontario K9L 0G2, Canada
2. Donald Danforth Plant Science Center, 975 N Warson Rd., Saint Louis, Missouri 63132, United States
3. Water Quality Centre, Trent University, 1600 West Bank Dr., Peterborough, Ontario K9L 0G2, Canada