1. Department of Environmental Studies and Sciences, The University of Winnipeg, Winnipeg, MB R3B 2E9, Canada
2. Department of Soil Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
3. Swift Current Research and Development Centre, Agriculture and Agri-Food Canada, Swift Current, SK S9H 3X2, Canada
4. Department of Chemistry, The University of Winnipeg, Winnipeg, MB R3B 2E9, Canada
5. Department of Geography, The University of Winnipeg, Winnipeg, MB R3B 2E9, Canada