Titlebook: Ecotoxicology: Problems and Approaches; Simon A. Levin,John R. Kelly,Kenneth D. Kimball Textbook 1989 Springer-Verlag New York Inc. 1989 B

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The Effects of Chemicals on the Structure of Terrestrial Ecosystems: Mechanisms and Patterns of Chan critical, therefore, to evaluate the ways in which ecosystems are likely to respond differently to chemicals than they respond to natural disturbance. We must identify the patterns and mechanisms of change in terrestrial ecosystems exposed to chemical inputs that are unique to this type of anthropogenic disturbance.

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0172-6226 gical changes ensuing from a variety of human activities that involve release of xenobiotic and other chemicals to the environment. A fundamental principle of ecotoxicology is embodied in the notion of change. Ecosystems themselves are constantly changing due to natural processes, and it is a challe

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