Bioaccumulation occurs when toxins build up - or accumulate - in a food chain. The animals at the top of the food chain are affected most severely. DDT is an insecticide that was widely used in the ...

This is a preview. Log in through your library . Abstract In the unpolluted Bromarv area of the Baltic the mean mercury content was 0.03 ppm in invertebrates, 0.10 ppm in the flesh of fishes that feed ...

A new study has proposed an ecological threshold concentration of 9 metals for 10 taxa of aquatic macroinvertebrates from clean sites in the Nalón river basin (Asturias). This is the first step ...

Avian species serve as sensitive indicators of environmental contamination, with mercury exposure emerging as a critical concern across diverse ecosystems. Mercury, particularly in its organic ...

Vol. 24, No. 6, Part B: Dedicated Issue: The Seine Estuary: A Man-Altered Macrotidal System (Dec., 2001), pp. 1074-1087 (14 pages) Polychlorinated biphenyls (PCBs) were measured in six compartments of ...