Selected publications

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  • Department:(Dept. 1) Ecohydrology and Biogeochemistry
August 2026
JGR Atmospheres. - 131(2026)16, Art. e2026JD046723

High-Resolution Regional Atmospheric Simulation of Precipitation and Isotopes in Central America

Yan Yang; Christian Birkel; Chris Soulsby; Ana M. Durán-Quesada; Ricardo Sánchez-Murillo; Germain Esquivel-Hernández; Kei Yoshimura; Dörthe Tetzlaff

The authors used an isotope-enabled spectral model to improve the simulation of precipitation and its isotopic composition over Costa Rica to assess the feasibility of using atmospheric model outputs as forcing data for ecohydrological models. When simulating long-term hydrological processes the model outputs provide a reliable source of forcing data and can be used for hydrological forecasts.

August 2026
Water Research. - XX(2026)X, Art. 126747

Tracing the occurrence and spatial drivers of organic contaminants in urban ponds along urbanization gradients

Elise Malsch-Fröhlich; Doerthe Tetzlaff; Gregory H. LeFevre; Stephanie Kramer-Schadt; Moritz Wenzler-Meya; Stephanie Spahr

This study presents a multi-tracer approach to investigate the impacts of urbanization on pond pollution at the city-scale, linking trace organic contaminant data, urban hydrology, and urbanization measures. In Berlin, urban ponds contained a wide variety of dissolved organic contaminants, with water inflow being a more important driver of high contaminant concentrations than surrounding land use.

June 2026
Hydrology and Earth System Sciences. - 30(2026)12, 3715–3739

Exploring impacts of forest management strategies on water partitioning in a drought-sensitive catchment using a tracer-aided ecohydrological framework

Cong Jiang; Doerthe Tetzlaff; Songjun Wu; Christian Birkel; Hjalmar Laudon; Chris Soulsby

The authors developed a parsimonious, tracer-aided forest management scenario framework using an ecohydrological model, which was designed to isolate the dominant vegetation-structural controls on long-term water partitioning. Evapotranspiration was highest under conifers, exceeding broadleaf forests and agroforestry by 7 % and 11 %. Agroforestry exhibited the greatest groundwater recharge. 

May 2026
Geophysical Research Letters. - 53(2026)10, Art. e2025GL120780

Prediction of Hydroclimatic Anomalies Using a New Isotope Precipitation Index

A. Watson; J. Miller; J. de Waal; H. Beckett; Y. Vystavna; E. Chikviladze; J. Cullmann; R. Sánchez-Murillo; A. María Durán-Quesada; D. Tetzlaff; C. Soulsby; K. Yoshimura; S. Kralisch; C. Birkel

The authors used stable water isotopes to trace the origin of precipitation and are developing a new, isotope-based Evaporation and Moisture Recycling Index (iEMI). The iEMI can identify anomalous dry periods and links evaporation-driven precipitation to droughts in Europe, Africa, and Australia. This innovative index can help improve drought monitoring and optimize water management worldwide.

May 2026
Journal of Hydrology. - 675(2026), Art. 135627

Effects of temporary streamflow interruption on hyporheic oxygen dynamics

Alejandra Villa; Shai Arnon; Stephanie Spahr; Cara Beume; Jörg Lewandowski

This study provides high-resolution, field-based evidence of the importance of accounting for short-term flow interruptions in river management strategies. It demonstrated that a one-day streamflow interruption of the side channel of the River Erpe caused a significant decrease in diel surface water oxygen amplitude and porewater oxygen concentrations, as well as a metabolic shift after rewetting.