1. Department of Environmental Systems Science Physics of Soils and Terrestrial Ecosystems ETH Zürich Zürich Switzerland
2. Department of Environmental Sciences Plant Ecology and Evolution University of Basel Basel Switzerland
3. Research Centre for Animal Production and Aquaculture Council for Agricultural Research and Analysis of Agricultural Economics (CREA) Lodi Italy
4. Università Cattolica Piacenza Italy
5. Chair of Soil Physics University of Bayreuth Bayreuth Germany