Selected publications

The authors suggest that lunar illuminated fraction should, in general, never be used in biological studies, as alternative variables such as horizontal illuminance better represent moonlight exposure, and therefore offer a greater chance of detecting the effects of moonlight. They provide a brief explanation of how moonlight varies with season and time of night.

Mixing within confluences is highly variable.This study relates patterns and amounts of mixing to three‐dimensional flow structure at three small confluences. The study indicates that generalization of mixing at confluences remains challenging but that advective lateral fluxes of streamwise momentum related to secondary currents or primary flow greatly enhance mixing at confluences.

Confluences are locations of complex hydrodynamic conditions within river systems. The effects on hydrodynamics and mixing of temperature‐induced density differences between incoming flows were investigated at a small‐size concordant bed confluence.

The authors have investigated whether and to what extent mining products from the Lusatian mining are deposited in the sediments of the River Spree: their signature in the river bed reaches 90 kilometres.

Sulphate pollution of inland waters is a persistent global problem. Climate change, land use and acid mining drainage are among the main causes. The review shows that sulphate affects the biogeochemical turnover of carbon, nitrogen and phosphorus and can have toxic effects on aquatic organisms. Bioremediation in buffer zones is a possible mitigation tool.

Eutrophication of Lake Stechlin leads to changes in the sediment by an intensification of internal matter cycles. The reductive dissolution of Mn in shallow areas and the precipitation result in the fixation of Mn as rhodochrosite in the sediment below 56 m depth. Geochemical Mn focusing indicates oxygen-free conditions in deep water and can be used to reconstruct former environmental conditions.

A predator-prey model shows the coupled dynamics of groundwater use and crop production. It provides the scientific basis for the sustainability analysis of the irrigation of agricultural land with groundwater.

Plant uniformity in highly managed agricultural landscapes has led to increases in flood and drought frequencies and magnitudes, as well as a poorer water quality. The study explores the risk of the homogenization of the terrestrial water cycle.