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Study on plankton [population of Kapla Beel, a freshwater wetland in Barpeta District, Assam

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The present paper deals with the study of Phyto and Zooplankton population in Kapla beel. Qualitative and quantitative study of plankton, their seasonal variation and ecological indices were recorded during the period of 2003-2005. Thirty two species of phytoplankton were recorded belonging to Cyanophyceae (Blue-Green algae), Chlorophyceae, Bacillariophyceae and Desmidiaceae. Fifty two species of Zooplankton were observed belonging to protozoa, Copepoda, Cladocera, Rotifers, Damselfly nymph, Hemiptera, Cranefly larvae, Trichoptera, Coleoptera and Dragonfly nymph. The plankton population showed variation in different seasons.
... Townsend and Doughlas (2017) reported that higher phytoplankton cell concentrations and biovolume during wet seasons in Daly river (first flood pulse) correspond to the high discharge and transportation of lentic phytoplankton originated from the external sources (floodplain water bodies) to the river main channel. The Cyanobacteria species were dominant in terms of numerical abundance across seasons in both the wetlands that significantly coupled with many other studies (Kumar & Oommen, 2011;Deka et al., 2009;Cardoso et al., 2017). Species mainly found were Dolichospermum, Lyngbya, Oscillatoria, Chroococcus, and Microcystis round the year indicating the sufficient amount of nutrients that supports for luxuriant growth of these algal groups. ...
... The prevalent turbid condition during monsoon was one of the factors that can be correlated to low H'. However, in the closed wetland, a subtle variation of H' value was seen during monsoon (2.56 ± 0.31) and post-monsoon season (2.53 ± 0.33), which is coupled with the findings of Deka et al. (2009) from Kapla wetland, India. The authors reported the H' values ranges between 2.1 − 2.3 and 1.8-2.5 during monsoon and post-monsoon season, respectively. ...
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