10.2190/2QGX-QVQF-U7CH-EE80 2QGXQVQFU7CHEE80 1 Mathematical Modeling of Pesticides in the Environment: Current and Future Developments 99 108 20020509 20020509 20020509 20020509 2QGXQVQFU7CHEE80.pdf http://baywood.metapress.com/link.asp?target=contribution&id=2QGXQVQFU7CHEE80 2 James Hill Environmental Research Laboratory, U. S. Environmental Protection Agency, Athens, Georgia Transport models, total ecosystem models with aggregated linear approximations, evaluative models, hierarchical models, and influence analysis methods are mathematical techniques that are particularly applicable to the problems encountered when characterizing pesticide chemicals in the environment. Because complete chemical, physical, and biological characterization is not available for most pesticides, research needs to be directed toward developing models for use in estimating whole system behavior based upon data representing a limited set of components and interactions. I. C. T. 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