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Not AvailableEcology and fisheries in two floodplain wetlands (beels) located in Nagaon district of Assam viz., Samaguri beel (N 26° 25' 36" and E 92° 51' 27"; 60 ha; seasonally open) and Sibasthan-Potakolong beeI (N 26° 30' 37" and E 92° 52' 22"; 92 ha; closed) in relation to riverine connection are discussed. Physico-chemical parameters of water indicated better water quality regimes in Samaguri than Sibasthan-Potakolong beel. Total phosphorous (ug/l), chlorophyll-a (ug/l) and net primary productivity was slightly higher in Samaguri (53.7-83.3; 18.7-63.2 and 930.5-1008.0) than Sibasthan-Potakolong beel (30.3-142.2; 14.2-23.8; 538.4-880.0). T-test showed Chl-a, pH and dissolved oxygen was significantly (p