1. Northern Rivers Institute, School of Geosciences; University of Aberdeen; Aberdeen UK
2. IGB Leibniz Institute of Freshwater Ecology and Inland Fisheries; Berlin Germany
3. Humboldt University of Berlin; Berlin Germany
4. School of the Environment; Trent University; Peterborough Ontario Canada
5. School of Geography and Earth Sciences; McMaster University; Hamilton Ontario Canada
6. Department of Geosciences; Boise State University; Boise ID USA
7. Department of Forest Ecology and Management; Swedish University of Agricultural Sciences; Umeå Sweden