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Seasonal changes of plankton of rural fish pond, Madhepura, Bihar

Sant Prakash Bhartia, Bhupendra Prasad Singha & Arun Kumarb*
aDepartment of Zoology, S.N.S.R.K.S College, Saharsa, Bihar, India
bUniversity Department of Zoology, B.N.M. University, Madhepura, Bihar, India
Received : 1st June, 2022 ; Revised : 2nd July, 2022

Abstract– The change in plankton seasonality of rural fish pond, Madhepura, Bihar was assessed in 2021. It was found that the pond water was alkaline with 40-92 ppm, free carbon dioxide ranged 0-1ppm. The water was transparent during the winter, summer month and turbid in rainy months. The pond’s water source was runoff from the surrounding field and township in rainy months. Dominant plankton genera Spirogyra, Diatoms, and Microcystis, indicate the pond’s eutrophic nature. The phytoplankton and zooplankton showed two peaks in a year. The zooplankton peaks were followed by phytoplankton peaks. The pond is suitable for the rearing of Catla, Rohu, Mrigal and common carps. Proper and timely stocking may improve the economic status of the fisherman community of the area through high fish production.

Key words: Seasonal changes, plankton, rural pond

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