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Kelly, John R. 1989. Ecotoxicology Beyond Sensitivity: A Case Study Involving 'Unreasonableness' of Environmental Change. In: Ecotoxicology: Problems and Approaches. Simon A. Levin et al., Editor. Springer-Verlag, New York, NY. Pp. 473-496. (ERL,GB X617).

One of the most difficult and frustrating tasks facing the ecological sciences is the translation of effects observed in experiments (whether in the laboratory, in microcosms, mesocosms, or in a unique and isolated field situation) to ecological responses of natural ecosystems. Therefore, extrapolation of effects, for Thalassia as for most ecosystems, is currently most hindered by a serious deficiency in understanding the structures of natural ecosystems and how they work. This chapter addresses questions related to the development of the best scientific basis for risk assessment and eventual judgment on regulatory endpoints such as 'unreasonable degradation.'

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