1. Chair of Soil Physics, Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Germany
2. Department of Horticulture, Faculty of Agriculture, University of Khartoum, Khartoum North, Sudan
3. Department of Land, Air and Water Resources, University of California Davis, Davis, USA
4. Physics of Soils and Terrestrial Ecosystems, Department of Environmental Systems Science, ETH Zürich, Zürich, Switzerland
5. Department of Soil and Water Science, The Hebrew University of Jerusalem, Rehovot, Israel
6. Earth and Life Institute-Environmental Science, Université catholique de Louvain, Louvain-la-Neuve, Belgium
7. Agrosphere (IBG-3), Forschungszentrum Jülich GmbH, Jülich, Germany