A model to estimate the total ecological risk in the management of water resources subject to multiple stressors

Abstract

The disjunctive convolution of independent individual stressor risk is presented as a model to estimate the total expectation of ecological effect for a water resource, subject to several different and metrically disparate stressors. This method makes use of the exposure and effect assessment data of the risk assessment procedure for each individual stressor given that the end-point is the same. A hypothetical case study illustrates how total risk could be used as an ecological goal-oriented tool in catchment management.

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