The presented study describes a standardised method for measuring the bioaccumulation of sediment-associated chemicals in endobenthic animals. The tubificid oligochaetes Tubifex tubifex and Limnodrilus hoffmeisteri represent the benthic infauna. Lindane and Hexachlorobenzene (HCB) were chosen as model substances. They were applied in a "1"4C-radiol...
Germany
The study presented here describes the development of a laboratory test system for the determination of aerobic biodegradability of substances at low concentrations in surface water. It was aimed to prepare a draft guideline for a biodegradation simulation test according to OECD format. The experimental approach was based on a literature study cond...
Germany
Changes in the locomotory behaviour of the freshwater rotifer Brachionus calyciflorus were were used as sublethal indicators of toxic stress. To that end, the swimming behaviour of this rotifer was analysed using an automated tracking system. The swimming speed (temporal factor), the swimming sinuosity (spatial factor), and the periods of swimming ...
The investigation provided results on the degradation of HCH isomers in soil as well as in bodies of water and liquid cultures. It showed that all HCH isomers are degraded in soil-compost mixtures under anaerobic conditions. The original concept for in-situ decontamination of meadows along the river Mulde by application of compost thus is not to be...
The effects of chronic exposure of the freshwater rotifer Brachionus calyciflorus to the toxicants lindane and 3,4-dichloroaniline (DCA), were evaluated. The parameters used to determine the toxicity on these compounds were the age-specific and fertility, and the demographic parameters: intrinsic rate of natural increase (r), generation time (T), n...
Germany
