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- W1990474714 abstract "Concentrations of chemicals in organisms are regarded as being indicators of the bioavailable fraction of those substances in the environment. Three gammarid collectives (assemblages) from the Weser-estuary (NW Germany), showing different species compositions, were used as experimental units to evaluate their suitability as biomonitors. Uptake and clearance of cadmium was investigated in semi-controlled dynamic flow-through tests. Kinetic data obtained from two compartment models confirmed a net accumulation strategy of gammarids for Cd and resulted in similar bioconcentration factors (BCFs) within the same experimental treatments. Deviations in bioconcentration factors between two treatments (BCFs: 377-542 vs 947-1190, based on dry wt) obtained under similar exposures (17 +/- 2 and 23 +/- 2 microg Cd litre(-1)) could not be assigned to significant fluctuations of both Cd levels and particulate matter in the flow-through systems. The biological half-life of Cd in gammarids was 6 to 12 days. It is concluded that gammarid collectives of different species composition may be used as experimental units in biomonitoring studies. This conclusion was confirmed by homogeneous Cd concentrations in field samples of gammarids from the Weser-estuary (0.34 +/- 0.03 mg kg(-1) dry wt., mean +/- 95% confidence intervals, N = 58)." @default.
- W1990474714 created "2016-06-24" @default.
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- W1990474714 date "1995-01-01" @default.
- W1990474714 modified "2023-09-26" @default.
- W1990474714 title "Validation of estuarine gammarid collectives (Amphipoda: Crustacea) as biomonitors for cadmium in semi-controlled toxicokinetic flow-through experiments" @default.
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- W1990474714 doi "https://doi.org/10.1016/0269-7491(94)00108-p" @default.
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