**About the Special Issue Editors**

**Jorg ¨ Lewandowski** is a senior scientist at the Leibniz-Institute of Freshwater Ecology and Inland Fisheries, as well as a lecturer at Humboldt University. His current research includes hydrological and biogeochemical processes involved in groundwater–surface water interactions at aquifer–stream (hyporheic zone) and aquifer–lake interfaces (lacustrine groundwater discharge). This includes topics of environmental and societal concern such as lake eutrophication and attenuation of trace organic compounds. Jorg's ¨ further ecohydrological research topics include lake restoration and bioturbation with a focus on *Chironomus plumosus*.

**Karin Meinikmann** Meinikmann has intensely investigated lacustrine groundwater discharge and implications for lake water quality and hydrology. She worked on hyporheic zone interactions in the context of pharmaceutical retention and degradation in wastewater-impacted rivers. At the Julius Kuehn Institute, her current focus is on plant protection products entering small standing waters via subsurface transport. This includes effects on aquatic biodiversity and the development of adequate monitoring schemes.

**Stefan Krause** is chair for ecohydrology and biogeochemistry at the University of Birmingham where he leads the Birmingham Water Council and holds an Invited Visiting Professorship at the University of Lyon. His research focus is on the fate and transport of emerging (e.g., engineered nanoparticles, pharmaceuticals, and microplastics) and legacy pollutants (e.g., chlorinated solvents) at ecohydrological interfaces. He develops advanced in situ environmental sensing technologies and integrated modelling approaches for identifying hotspots hot moment in environmental pollution. In collaboration with private sector partners, regulators, and decision makers, he is working toward developing sustainable solutions to wicked water problems that benefit society and the environment.
