Jörg Lewandowski

Jörg Lewandowski serves as a Research Group Leader at the Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB) in Berlin, Department 1: Ecohydrology and Biogeochemistry. He has been a Senior Scientist at IGB since January 2006 and has lectured at Humboldt University of Berlin (HU Berlin) since 2012. His research focuses on groundwater-surface water interactions, particularly examining hydrodynamic transport and biogeochemical processes at critical interfaces.

Dr. Lewandowski's research interests center on ecohydrological processes with particular emphasis on hyporheic zones and groundwater-lake interfaces. His work investigates hydrodynamic transport and biogeochemical turnover processes in floodplain aquifers, retention and transformation of trace organic compounds, and phosphorus cycling in limnetic sediments. His expertise extends to lake restoration techniques and understanding how bioturbation affects sediment-water interactions. His research integrates field measurements, laboratory experiments, and modeling approaches to understand complex water-sediment interactions.

Analysis of his recent publications reveals a strong focus on methodological advancements for studying groundwater-surface water interactions. His work increasingly employs electrical conductivity and temperature as tracers to understand hyporheic exchange processes. There's a clear trend toward developing modeling tools for quantifying exchange fluxes and examining how biological activity enhances biogeochemical processing at ecohydrological interfaces. His research spans multiple scales from laboratory experiments to catchment-level investigations, with particular attention to urban streams and lake ecosystems.

Dr. Lewandowski leads or participates in numerous research projects including the long-term 'The hyporheic zone' project (2006-2029), 'Groundwater – the disregarded component in lake nutrient budgets' (2010-2028), and 'Dynamic hyporheic zone' (2023-2026). His collaborative work extends across European research networks including HypoTRAIN and Interfaces. His research group conducts field investigations at multiple lake and river sites including the River Spree, Lake Stechlin, and Lake Arendsee.