1. Chair of Ecosystem Physiology , Faculty of Environment and Natural Resources, , Georges-Köhler-Allee, 79110 Freiburg , Germany
2. University of Freiburg , Faculty of Environment and Natural Resources, , Georges-Köhler-Allee, 79110 Freiburg , Germany
3. Chair of Hydrology , Faculty of Environment and Natural Resources, , Friedrichstraße 39, 79089 Freiburg , Germany
4. University of Freiburg , Faculty of Environment and Natural Resources, , Friedrichstraße 39, 79089 Freiburg , Germany
5. Chair of Forest Growth and Dendroecology , Faculty of Environment and Natural Resources, , Tennenbacher Str. 4, 79106 Freiburg , Germany
6. University of Freiburg , Faculty of Environment and Natural Resources, , Tennenbacher Str. 4, 79106 Freiburg , Germany
7. IBG , PB 1 ‘Landschaftsprozesse’, , Eberswalder Straße 84, 15374 Müncheberg , Germany
8. Leibniz Zentrum für Agrarlandschaftsforschung (ZALF) e. V , PB 1 ‘Landschaftsprozesse’, , Eberswalder Straße 84, 15374 Müncheberg , Germany
9. Soil Physics , Department of Crop Sciences, , Grisebachstraße 6, 37077 Gottingen , Germany
10. University of Göttingen , Department of Crop Sciences, , Grisebachstraße 6, 37077 Gottingen , Germany
11. Department of Forest and Wood Science, Stellenbosch University , Bosman Street, 7599 Stellenbosch , South Africa
12. Chair of Site Ecology and Plant Nutrition, Institute of Soil Science and Site Ecology, TU Dresden , Pienner Strasse 19, Tharandt 01737 , Germany