A5020692822- Marine and coastal ecosystems
- Methane Hydrates and Related Phenomena
- Groundwater and Isotope Geochemistry
- Geochemistry and Elemental Analysis
- Marine Biology and Ecology Research
- Coastal wetland ecosystem dynamics
- Geology and Paleoclimatology Research
- Heavy metals in environment
- Radioactive element chemistry and processing
- Isotope Analysis in Ecology
- Marine and environmental studies
- Groundwater flow and contamination studies
- Thallium and Germanium Studies
- Microbial Community Ecology and Physiology
- Marine and coastal plant biology
- Hydrocarbon exploration and reservoir analysis
- Cognitive and developmental aspects of mathematical skills
- Geochemistry and Geologic Mapping
- Mathematics Education and Teaching Techniques
- Atmospheric and Environmental Gas Dynamics
- Numerical methods for differential equations
- Geological formations and processes
- Mine drainage and remediation techniques
- Advanced Mathematical Physics Problems
- Effects and risks of endocrine disrupting chemicals
Carl von Ossietzky Universität Oldenburg
2014-2024
Oldenburger Institut für Informatik
2023
Goethe University Frankfurt
2016-2023
Dawson College
2015-2023
Leibniz Institute for Baltic Sea Research
2020
Misericordia University
2018
Individual Development and Adaptive Education
2016
University of Bayreuth
2006
Abstract Terrestrial groundwater travels through subterranean estuaries before reaching the sea. Groundwater‐derived nutrients drive coastal water quality, primary production, and eutrophication. We determined how dissolved inorganic nitrogen (DIN), phosphorus (DIP), organic (DON) are transformed within estimated submarine discharge (SGD) nutrient loads compiling > 10,000 samples from 216 sites worldwide. Nutrients exhibited complex, nonconservative behavior in estuaries. Fresh DIN DIP...
Nitrogen (N) loss rates were determined in permeable sediments of the Wadden Sea using a combination stable N isotope incubation experiments and model simulation approaches during three seasons. Three different methods that employed pairing technique used: intact core incubations simulating either (1) diffusive or (2) advective transport conditions (3) slurry incubations. from under simulated exceeded those measured by 1–2 orders magnitude, but comparable to observed generally showed little...
Submarine groundwater discharge (SGD) is a ubiquitous source of meteoric fresh and recirculating seawater to the coastal ocean. Due hidden distribution SGD, as well hydraulic- stratigraphy-driven spatial temporal heterogeneities, one biggest challenges date correct assessment SGD-driven constituent fluxes. Here, we present results from 3-dimensional seasonal sampling campaign shallow subterranean estuary in high-energy, meso-tidal beach, Spiekeroog Island, Northern Germany. We determined...
Submarine groundwater discharge (SGD) from intertidal beach systems forms a source of fresh and saline, often nutrient-enriched water to the near-shore across world. The chemical composition solute flux via SGD depends on several factors, including solid phase composition, organic matter supply, hydraulic gradients, as well pore residence time origin, which are partly related topography. High-energy sandy beaches especially prone frequent sediment relocation variable topography,...
Submarine groundwater discharge (SGD) is an important source of nutrients and metals to the coastal ocean, affects ecosystems, gaining recognition as a relevant water resource. SGD usually quantified using geochemical tracers such radon or radium. However, few studies have also used dissolved silicon (DSi) tracer for SGD, DSi enriched in when compared surface waters. In this study, we discuss potential based on literature review two case from contrasting environments. first calculate fluxes...
Abstract During seawater circulation in permeable intertidal sands, organic matter degradation alters the composition of percolating fluids and remineralization products discharge into surficial waters. Concurrently, coastal nutrient change seasonally due to variations pelagic productivity. To assess seasonal changes zone a high energy beach (Spiekeroog Island, southern North Sea, Germany), we analyzed shallow pore waters for major redox constituents (oxygen [O 2 ], manganese [Mn], iron...