Ecology of Monabeel, a floodplain ecosystem of Cachar, Assam with special reference to aquatic insect community

摘要

Present study was carried out to investigate the composition, diversity and distribution of aquatic insects in relation to the physico-chemical properties of the water of Monabeel, a floodplain ecosystem. This study reported that the ecological quality of the system is mainly governed by dissolved oxygen, rainfall, free carbon dioxide and nitrate. Average Score Per Taxon (ASPT), Stream Invertebrate Grade Number - Average Level (SIGNAL), Trophic Rate Score (TRS) and Biological Monitoring Working Party (BMWP) Score reported from the study reflected good ecological potential as well as slightly impacted nature of the water body. Input of nutrients during connectivity might be one of the important reasons for mesotrophic nature of the system. However for drawing a concrete conclusion intensive sampling and thorough investigations are necessary.