2021 Landcare Germany (DVL)
2017 Nature and Biodiversity Conservation Union (NABU)
2014 Global Land Programme (GLP)
2011 German Hydrological Society (DHG)
2011 International Commission on Water Quality (ICWQ)
2008 German Soil Society (DBG)
2008 European Geophysical Union (EGU)
2006 International Environmental Modelling and Software Society
2005 International SWAT-Conferences (Member of "Scientific Board")
2002 European Society for Soil Conservation
2001 German Working Group for Geomorphology
2001-2022 International Association for Landscape Ecology (IALE)
2016-2018 American Association of Agricultural and Biological Engineers (ASABE)

Editorial activities

2017-2023 Editorial Board "Environmental Science and Policy"
2011-2021 Editorial Board "Environmental Modelling & Software"
2018-2020 Editorial Board "Land"
2015-2017 Editor-in-Chief (with Peter Goethals) of "Sustainability of Water Quality and Ecology"