Gudrun Massmann

Carl von Ossietzky Universität Oldenburg

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Janek Greskowiak

Carl von Ossietzky Universität Oldenburg

Stephan L. Seibert

Carl von Ossietzky Universität Oldenburg

Uwe Dünnbier

Berliner Wasserbetriebe (Germany)

Hannelore Waska

Carl von Ossietzky Universität Oldenburg

A. Pekdeğer

Freie Universität Berlin

Michael E. Böttcher

Leibniz Institute for Baltic Sea Research

Rena Meyer

Carl von Ossietzky Universität Oldenburg

Anja Reckhardt

Carl von Ossietzky Universität Oldenburg

Nele Grünenbaum

Carl von Ossietzky Universität Oldenburg

Victoria Burke

Carl von Ossietzky Universität Oldenburg

Cooperative Institutions

Carl von Ossietzky Universität Oldenburg

Freie Universität Berlin

Kiel University

GEOMAR Helmholtz Centre for Ocean Research Kiel

University of Bremen

Leibniz Institute for Baltic Sea Research

University of Göttingen

Helmholtz Centre for Environmental Research

Max Planck Institute for Marine Microbiology

Leibniz Institute of Freshwater Ecology and Inland Fisheries

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A State-Of-The-Art Perspective on the Characterization of Subterranean Estuaries at the Regional Scale

Frontiers in Earth Science (2021)

Nils Moosdorf Michael E. Böttcher Dini Adyasari Ercan Erkul Benjamin Gilfedder

Subterranean estuaries the, subsurface mixing zones of terrestrial groundwater and seawater, substantially influence solute fluxes to the oceans. Solutes brought by groundwater from land and solutes brought from the sea can undergo biogeochemical reactions. These are often mediated by microbes and controlled by reactions with coastal sediments, and determine the composition of fluids discharging from STEs (i.e., submarine groundwater discharge), which may have consequences showing in coastal ecosystems. While at the local scale (meters), processes have been intensively studied, the impact of subterranean estuary processes on solute fluxes to the coastal ocean remains poorly constrained at the regional scale (kilometers). In the present communication, we review the processes that occur in STEs, focusing mainly on fluid flow and biogeochemical transformations of nitrogen, phosphorus, carbon, sulfur and trace metals. We highlight the spatio-temporal dynamics and measurable manifestations of those processes. The objective of this contribution is to provide a perspective on how tracer studies, geophysical methods, remote sensing and hydrogeological modeling could exploit such manifestations to estimate the regional-scale impact of processes in STEs on solute fluxes to the coastal ocean.

Submarine groundwater discharge

Biogeochemical Cycle

Biogeochemistry

Temporal scales

10.3389/feart.2021.601293

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Citations (42)

Trinkwassergewinnung in urbanen Räumen – Erkenntnisse zur Uferfiltration in Berlin

Grundwasser (2007)

Gudrun Massmann A. Pekdeğer Thomas Heberer Gesche Grützmacher Uwe Dünnbier

10.1007/s00767-007-0036-7

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Citations (30)

Modeling the transport behavior of 16 emerging organic contaminants during soil aquifer treatment

The Science of The Total Environment (2015)

Hang Thuy Thi Nham Janek Greskowiak Karsten Nödler M. Azizur Rahman Thomas Spachos

10.1016/j.scitotenv.2015.01.096

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Citations (54)

Occurrence of Antibiotics in Surface and Groundwater of a Drinking Water Catchment Area in Germany

Water Environment Research (2016)

Victoria Burke Doreen Richter Janek Greskowiak Anne Mehrtens Lena Schulz

ABSTRACT: The contamination of the aquatic environment with organic micropollutants, such as veterinary pharmaceuticals, has become an increasingly serious problem and has aroused attention in the course of the last decades. This study presents a screening for a series of veterinary antibiotics, potentially introduced by the application of liquid manure, in ground‐ and surface water of a drinking water catchment in Lower Saxony, Germany. Of the 26 compounds analyzed, eight, including sulfadiazine, sulfapyridine, sulfamethoxazole, trimethoprim, dehydrato‐erythromycin, sulfadimidine, tylosin, and tetracycline were detected in surface water samples. Trimethoprim was detected in 11 out of 15 shallow groundwater samples, indicating its high environmental relevance. Column sorption experiments conducted on trimethoprim show a comparatively moderate sorption affinity to sandy aquifer material with a retardation coefficient of 5.7.

Catchment area

10.2175/106143016x14609975746604

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Citations (103)

Identification and significance of sulphonamides (p-TSA, o-TSA, BSA) in an urban water cycle (Berlin, Germany)

Water Research (2007)

Doreen Richter Gudrun Massmann Uwe Dünnbier

Filtration (mathematics)

10.1016/j.watres.2007.10.003

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Citations (32)

Flow, Transport, and Reactions in Coastal Aquifers

Geofluids (2020)

Xuan Yu Christopher J. Russoniello Leanne K. Morgan Gudrun Massmann Guizhi Wang

10.1155/2020/3539052

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Citations (0)

Stable water isotopes as tracers in studies of lacustrine groundwater discharge

EGU General Assembly Conference Abstracts (2015)

Jörg Lewandowski Franziska Pöschke Karin Meinikmann Sebastian Rudnick Cécile Périllon

Source

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Redox processes in the Oderbruch polder groundwater flow system in Germany

Applied Geochemistry (2004)

Gudrun Massmann A. Pekdeğer Christoph Merz

10.1016/j.apgeochem.2003.11.006

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Citations (73)

Impact of mineral reactions and surface complexation on the transport of dissolved species in a subterranean estuary: Application of a comprehensive reactive transport modeling approach

Advances in Water Resources (2024)

Stephan L. Seibert Gudrun Massmann Rena Meyer Vincent Post Janek Greskowiak

Subterranean estuaries (STE) are hotspots of biogeochemical reactions. Here, dissolved constituents in waters of terrestrial and marine origin are transformed before they discharge to the coastal oceans. The involved biogeochemical reactions are complex and non-linear, calling for the application of numerical reactive transport modeling (RTM) to improve the process understanding. The aim of this study was to assess the roles of organic matter degradation and coupled secondary mineral reactions for the fate of dissolved species in STEs of sandy beaches. A comprehensive RTM approach was applied for this purpose, accounting for the effects of ion activities, pH, pe, redox reactions, mineral equilibria (calcite, goethite, siderite, iron sulfide, hydroxyapatite and vivianite) as well as surface complexation. Results show that the STE biogeochemistry and associated species fluxes are very sensitive to the assumed reaction network. For example, inorganic carbon and pH were largely controlled by calcite and siderite dynamics, and dissolved Fe2+ and HS- were precipitated as goethite, siderite and/or iron sulfides. Moreover, PO43- concentrations were affected by both the formation of vivianite or hydroxyapatite as well as surface complexation. This work helped to establish the relative importance of some of the major biogeochemical processes in the STE. However, further field studies are needed to understand which processes play a role in real-world STEs, including an exploration of the deep subsurface of STEs. Such field-based observations will improve our conceptual process understanding, which is key to developing well-constrained RTMs.

Biogeochemical Cycle

Biogeochemistry

Geochemical Modeling

10.1016/j.advwatres.2024.104763

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Citations (2)

Removal kinetics of organic compounds and sum parameters under field conditions for managed aquifer recharge

Water Research (2011)

Bernd Wiese Gudrun Massmann Martin Jekel Thomas Heberer Uwe Dünnbier

Spurious relationship

Organic chemicals

10.1016/j.watres.2011.06.040

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Citations (89)