1. School of Engineering, University of Guelph, Guelph, ON, N1G2W1, Canada
2. Department of Plant and Environmental Sciences, New Mexico State University, Las Cruces, NM 88003, USA
3. Dept. of Civil Engineering, New Mexico State University, New Mexico, USA
4. School of Environmental Sciences, University of Guelph, Guelph, ON, N1G2W1, Canada