摘要:This Special Issue was produced as a follow-up to the17th Biennial Conference ERB 2018 and contains contributions summarising conference presentations. The ERB2018 international conference (https://erb-network.simdif.com/erb-conferences.html, last access: 5 July 2019) was heldin Darmstadt, Germany, from 11 to 14 September 2018and was attended by scientists from 19 different countries.ERB is the Euromediterranean Network of Experimentaland Representative Basins (https://erb-network.simdif.com/index.html, last access: 5 July 2019). It is an open association of 22 European countries operating and managing wellinstrumented experimental and representative basins for hydrological and environmental research on a long-term basis. The exchange of hydrological information, data and research methods deepens the relationships between the ERBmembers. Thereby, regular meetings, visits and biennial conferences are organised to bring together research teams, research institutes and universities as well as basin managersfrom many fields, inter alia hydrology, agricultural and forest sciences. Since 1986 scientific topics of common interestwere discussed during biennial ERB conferences.