Groundwater-Surface Water Interactions

Research group of Jörg Lewandowski
Hyporheische Zone. | Bild: Jörg Lewandowski / IGB

Hyporheic zone. | Image: Jörg Lewandowski / IGB

Our research addresses ecohydrological processes at interfaces between aquifers and surface water bodies. We investigate hydrological transport processes, biogeochemical turnover and the close coupling of these processes at the interface. We conduct field investigations, lab and modelling studies. A focus is on the development and application of innovative measurement techniques.

We study three different types of groundwater-surface water interfaces:

  1. Some research is on so-called hyporheic zones (streambed, i.e. interface between stream and aquifer). We consider the hyporheic zone as a natural, hydrodynamically driven bioreactor responsible for the impressive self-purification capacity of streams regarding nutrients (phosphorus, nitrogen, and carbon) and organic trace compounds (e.g., pharmaceuticals).
  2. Other research of our multidisciplinary group focuses on lacustrine groundwater discharge, i. e. the aquifer-lake interface. Surprisingly, groundwater has usually been neglected in water and nutrient budgets of lakes until recently. Even world-wide there is very little research on this topic. We could show the large relevance of groundwater exfiltration and groundwater-borne nutrient transport for lake eutrophication and other ecological challenges.
  3. Further research focuses on burrowing macrozoobenthos (chironomid larvae) in lake sediments (bioturbation). These small ecosystem engineers alter not only the local hydrology and biogeochemistry but have even severe impacts on entire ecosystems.

The departmental core area "Landscape-waterscape interactions" is mainly addressed with research on the 2nd interface (catchment-lake interactions) and additionally with some research on the 1st interface (catchment-stream interactions). The departmental core area "Urban ecohydrology" is mainly addressed with research on the 1st interface (hyporheic zones in urban streams) and additionally with some research on the 2nd interface (lacustrine groundwater discharge in urban areas). The departmental core area "Aquatic-biotic coupling" is addressed with research on the 3rd interface which is created and maintained by burrowing macrozoobenthos.

 

Group members

Jörg Lewandowski

Research Group Leader
Working group
Groundwater-Surface Water Interactions

Karl Mellerowicz

Scientific Staff
Working group
Groundwater-Surface Water Interactions

Jonas Schaper

Postdoc
Working group
Groundwater-Surface Water Interactions

Gunnar Nützmann

2nd Deputy Director a. i.
Working group
Groundwater-Surface Water Interactions

Anna Jaeger

Doctoral Student
Working group
Groundwater-Surface Water Interactions

Liwen Wu

Doctoral Student
Working group
Groundwater-Surface Water Interactions

Anja Höhne

Doctoral Student
Working group
Groundwater-Surface Water Interactions

Hanna Schulz

Doctoral Student
Working group
Groundwater-Surface Water Interactions

Birgit Müller

Doctoral representative
Working group
Groundwater-Surface Water Interactions

Cara Beume

Student (BA/MA)
Working group
Groundwater-Surface Water Interactions

Christine Sturm

Technician/Lab Operator
Working group
Groundwater-Surface Water Interactions
Landscape Ecohydrology

Grit Siegert

Technician/Lab Operator
Working group
Groundwater-Surface Water Interactions
Landscape Ecohydrology

Hauke Dämpfling

Technician/Lab Operator
Working group
Groundwater-Surface Water Interactions
Landscape Ecohydrology
Light Pollution and Ecophysiology

Carlotta Fabian

Student Assistant
Working group
Groundwater-Surface Water Interactions
Selected publications

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