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Assessment of Effects of Chemical Contaminants in Dredged Material on Marine Ecosystems and Human Health

Assessment of Effects of Chemical Contaminants in Dredged Material on Marine Ecosystems and Human Health
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US$ 85.00
This volume explores the applicability of bioassays and bioindicators as tools for evaluating the effects of dredged sediments on the marine ecosystem. Waterways and harbors in delta areas must be dredged regularly to remove sediments which might otherwise block shipping routes, and hundreds of millions of tonnes of sediment are removed each year worldwide. Besides containing a relatively high amount of organic matter, these sediments also contain a complex mixture of chemicals, many of which are toxic to some degree. These cocktails of compounds in dredged material, and their effects on the environment, are as yet inadequately measured and assessed. One approach to identifying the toxicity of the mixture of unmeasured chemicals present in dredged material is by effect-based bioassays, quantifying the effect of a whole mixture rather than that of each compound. This study analyses the application of bioassays and develops a rationale for their inclusion in hazard, risk and impact assessment of dredged sediments. It also establishes a comprehensive set of bioassays and markers to assist this process.
IOS Press; November 2009
164 pages; ISBN 9781607505235
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