AQUATIC BIOINDICATORS OF LOHIT RIVER FOR WATER QUALITY ASSESSMENT
Keywords:
Macroinvertebrates, Bioindicator, Diversity, TransboundaryAbstract
The study was conducted on Lohit River for consecutive two years which is transboundary to Arunachal Pradesh and Assam of India. The observations recorded seasonal variations of macroinvertebrates richness, which serves as a bioindicator. Collected macroinvertebrates falling under the phyla Arthropoda and Mollusca, revealed 13 orders, 35 families, and 38 species. The biotic indices like Shannon-Weiner diversity index, Simpson’sdiversity index, Marglef richness index, Sorensens similarity index have shown relatively better quality of water. The calculated BMWP, ASPT and FBI score highlighted the healthy condition of the aquatic ecosystem. The study shows a complex but stable ecosystem during the study.
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