1. Department of Ecology and Environmental Science Umeå University Umeå Sweden
2. Aquatic Ecology & Environmental Biology, Faculty of Science, Radboud Institute for Biological and Environmental Sciences Radboud University Nijmegen Nijmegen The Netherlands
3. Soil Research Centre and Department of Geography & Environmental Science University of Reading Reading UK
4. Ecology & Biodiversity Group, Institute of Environmental Biology Utrecht University Utrecht The Netherlands
5. Biont Research Utrecht The Netherlands
6. GRECO, Institute of Aquatic Ecology University of Girona Girona Spain
7. Department for Soil Health and Plant Nutrition Austrian Agency for Health and Food Safety (AGES) Vienna Austria