Many industrialized and developing countries are faced with the assessment of potential risks associated with contaminated land a variety of human activities have left their impacts on soils in the form of elevated and locally high concentrations of potential toxicants in several cases sources have not yet been stopped and contamination continues decisions on the management of contaminated sites and on the regulation of chemicals in the terrestrial environment require information on the . Ecological risk assessment of contaminants in soil usually dispatched within 3 to 5 business days usually dispatched within 3 to 5 business days many industrialized and developing countries are faced with the assessment of potential risks associated with contaminated land. Ecological risk assessment of contaminants in soil volume 5 of chapman hall ecotoxicology series volume 5 of ecotoxicology series editors nico m van straalen hans lokke edition illustrated. Inhaltsangabepreface acknowledgements introduction 1 ecological approaches in soil ecotoxicology nm van straalen h lokke part one extrapolation from experiments 2 scientific basis for extrapolating results from soil ecotoxicity tests to field conditions and the use of bioassays cam van gestel 3 is it possible to develop microbial test systems to evaluate pollution effects