Ecological assessment and toxicity screening

The distinction between the use of bioassays for toxicity screening and ecological assessments is not always clear and feasible. With the simplicity, sensitivity and reliability that many screening tests offer, it is tempting to use 

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The final chapter follows on from leaching tests and looks at the potential uses of toxicity tests in contaminated land analysis and covers ecological assessment and toxicity screening. This holistic approach is a rapidly expanding area that can give useful information on the overall potential toxicity, suggesting... 

Ecological assessment and toxicity screening in contaminated land analysis... 

John co-authored the Laboratory Manual for Marine Microbiology and edited the book, QSARs for Pollution Prevention, Toxicity Screening, Risk Assessment and Web Applications. He has authored or co-authored 160 peer-reviewed publications and has written 140 abstracts of presentations for national and international professional society meetings. John was the first recipient of the American Fisheries Society/U.S. EPA Science Achievement Award in Biology/Ecology and has been awarded 5 U.S. EPA Bronze medals. He was awarded the U.S. EPA s Unsung Hero Award for his work with Special Olympics. John is married with 4 children and 2 grandchildren. 

Direct toxicity assessment (DTA) can also be used to account for the combined effects of contaminants. Measurements taken from biological and ecotoxicological tests are more directly related to ecological risk, because they measure the biological effects from a mixture of contaminants and, in doing so, provide an implicit indication of the bioavailability of the contaminants. Some tests can be simple and cost-effective in comparison to screening for multiple chemical... 

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