1. School of Environment and Sustainability; University of Saskatchewan; Saskatoon Saskatchewan Canada
2. Department of Biology; University of Saskatchewan; Saskatoon Saskatchewan Canada
3. Watershed Hydrology and Ecology Research Division; Water Science and Technology, Environment and Climate Change Canada; Saskatoon Saskatchewan Canada
4. Toxicology Centre; University of Saskatchewan; Saskatoon Saskatchewan Canada
5. Institute of Loess Plateau; Shanxi University; Taiyan Shanxi People's Republic of China