DISTRIBUTION PATTERN OF PHYTOPLANKTON IN WATER-LOGGED RICE FIELDS OF LAKWRNPUR DISTRICT, ASSAMS. N. PhukanAbstract The waterlogged rice fields of the district of Lakhimpur, Assam contains a wide variety of phytoplanktons The distribution pattern of angiosperms, pteridophytes and algal flora in the rice fields of Lakhimpur district, Assam, revealed the abundance of 14 species of angiosperms, 4 species of pteridophytes and 6species of algal flora were isolated from the water. The summer season with abundance of water in the fields contained highest population of aquatics. Iponwea aquatic-a and Eichornea crassipes among the angiosperms, Azolla pinnata and Salvinea cucullata among pteridophytes and the chlorophycean algae were the dominant flora in the rice fields.
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