1. Forest Soils and Biogeochemistry Swiss Federal Institute for Forest, Snow and Landscape Research WSL Birmensdorf Switzerland
2. Department of Environmental Systems Science ETH Zurich Zürich Switzerland
3. Institute of Plant and Animal Ecology Ekaterinenburg Russia
4. Soil Science and Soil Protection Martin Luther University Halle‐Wittenberg Halle (Saale) Germany
5. Department of Forest and Soil Sciences, Institute of Forest Ecology University of Natural Resources and Life Sciences (BOKU) Vienna Austria
6. Forest Ecology Institute of Terrestrial Ecosystems (ITES), ETH Zurich Zurich Switzerland