1. Department of Earth Sciences, Brock University, St. Catharines, Ontario, Canada.
2. Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, Canada.
3. Department of Geography and Tourism Studies, Brock University, St. Catharines, Ontario, Canada.
4. Department of Geography and Environmental Studies, Carleton University, Ottawa, Ontario, Canada.
5. Department of Biology, University of New Brunswick, Fredericton, New Brunswick, Canada.