Dealing with Cumulative Effects (Impacts) in Asian Multi-Functional Wetlands

Abstract

The paper proposes a technique for evaluation of natural and anthropogenic impacts on multiple functions of natural wetlands performing, amongst numerous other services, a service of water pollution mitigation at large scale. It is based on data available from elicitation of expert opinion, rapid environmental assessment, participatory rural appraisal and statistical analysis. The technique may be useful if extensive environmental data sets are not available, that is frequently the case in the developing world. Important conclusions on impacts of water pollution and other driver (stressors) on multi-functional wetlands, otherwise impossible, may be made through its use in situations of complex driver interactions. Cumulative Effects Assessment, of which the technique may be an integral part, is to be incorporated into both Environmental Impact Assessment and Strategic Environmental Assessment to provide for a more sustainable use of the wetland services.