Evaluation of water quality and organic pollution of Shadegan and Hawr Al Azim wetlands by biological indices using insects

Abstract

In this study the water quality and organic pollution of Shadegan and Hawr Al Azim wetlands by biological indices using insects during October 2011 to September 2012 were evaluated. The results of the biological monitoring working party index indicated that the abundance of family with medium or lower scores was high. The evaluation results of water quality and organic pollution of these wetlands by Ephemeroptera, Plecoptera and Trichoptera, average score per taxon and family biotic indexes indicated that the water quality had a fair to very poor condition assessing probable severe pollution, and likely substantial to severe organic pollution. Also the dominant family index indicated the community was under the influence of environmental stress in these wetlands. Totally assessing outcomes of these biological indices from these wetlands showed that their water quality had a poor condition and they can be used as valuable tools for evaluating the wetland water quality.