1. Chemical Sciences; Trent University; Peterborough Ontario Canada
2. Centre for the Environment; Oxford University; Oxford UK
3. Department of Aquatic Science and Assessment; Swedish University of Agricultural Science; Uppsala Sweden
4. Ontario Ministry of Environment; Etobicoke Ontario Canada
5. School of Environment and Sustainability and Global Institute for Water Security; University of Saskatchewan; Saskatoon Saskatchewan Canada
6. Department of Geology; State University of New York College at Cortland; Cortland New York USA
7. Department of Forest Ecology and Management; Swedish University of Agricultural Sciences; Umeå Sweden