Richard Ottermanns

TL;DR: It can be stated that dilution reduces the ecotoxicological risk in the Yangtze River, but does not eliminate it.

TL;DR: Freshwater sediments with low levels of anthropogenic contamination and a broad range of geochemical properties were investigated using various sediment-contact tests in order to study the natural variability and to define toxicity thresholds for the various toxicity endpoints.

TL;DR: It is argued why a more detailed spatial level as well as a distinction between natural and artificial varieties of structural elements is justified and needed and how the assessment of urban green spaces benefits from the multidimensional perspective that is applied.

TL;DR: The presented interlaboratory study verified whether a battery of miniaturized bioassays, conducted in 11 different laboratories following their own protocols, would produce comparable results when applied to evaluate blinded samples consisting of a pristine water extract spiked with four emerging pollutants as single chemicals or mixtures.

TL;DR: A sediment contact test battery consisting of five ecotoxicological test systems was applied to 21 native freshwater sediments characterized by a broad variety of geochemical properties and anthropogenic contamination, and the sediments were classified according to a newly proposed classification system for sediment toxicity assessment.