Biological assessment of the Zayandeh Rud River, Iran, using benthic macroinvertebrates |
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Authors: | Mohammad Nemati Varnosfaderany Esa Ebrahimi Noorolla Mirghaffary Alireza Safyanian |
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Institution: | Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran |
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Abstract: | Benthic macroinvertebrate communities from the middle of Zayandeh Rud River were analyzed monthly during 1 year at 8 stations, in order to assess changes in their diversity and richness in relation to water quality. Two major groups of sites based on similarity between macroinvertebrate communities were identified by cluster analysis. The performances of the original and revised BMWP score systems were assessed by comparing the community structure indices of benthic macroinvertebrates along with physico-chemical parameters of the water. The biotic indices (BMWP, ASPT, revised BMWP and ASPT) showed better correlation with water quality parameters than that of the richness and diversity indices. The revised ASPT had the highest correlation with water quality parameters. It seems that the application of the revised BMWP score system could be useful for assessment of the water quality in Zayandeh Rud River. |
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Keywords: | Benthic macroinvertebrates BMWP Diversity Water quality Zayandeh Rud river |
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