Acta Scientific Microbiology (ISSN: 2581-3226)

Research Article Volume 5 Issue 12

Seasonal Variation of Diatom Community in Some Freshwater Ponds of Kolkata

Bipasa Das1, Joydeep Mukherjee1 and Satadal Das2*

1School of Environmental Studies, Jadavpur University, Kolkata, India

2Department of Microbiology, Peerless Hospital and B. K. Roy Research Centre, Kolkata, India

*Corresponding Author: Satadal Das, Department of Microbiology, Peerless Hospital and B. K. Roy Research Centre, Kolkata, India.

Received: October 17, 2022; Published: November 14, 2022


The water quality of different natural water bodies is now monitored in many countries by the diatom population. Thus a study on the diatom population in water bodies of a city is important and a study on the seasonal variation of such species in small water bodies like ponds may help us to find out which diatom species are related to polluted water. In this study, we selected six ponds located in the city of Kolkata, three ponds located in the slum area, and three ponds located in the non-slum area. Monthly five observations of diatom species in each pond were done from January 2018 to December 2019. After obtaining the raw data Shannon diversity index was calculated and compared. Most diatom species were found in the rainy and autumn season; however, in other months particularly when rainfall is very low only one or two species were found indicating their activities in polluted water. The isolates were Navicula radiosaSynendra ulnaCyclotella meneghinianaNitzschia stagnorumNavicula gracilis, Navicula viridula, Others (occasionally found) [Navicula protractaCymbella tumidaGomphonema vibrioGrammatophora undulataAulacoseira granulata; Navicula reinhardtii, Achnanthes subsessilisCocconeis pediculus]. Synendra ulnaCyclotella meneghiniana were particularly found in polluted water. 

Keywords: Diatom; Water Bodies; Seasonal Variation; Shannon Diversity Index


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Citation: Satadal Das., et al. “Seasonal Variation of Diatom Community in Some Freshwater Ponds of Kolkata". Acta Scientific Microbiology 5.12 (2022): 37-42.


Copyright: © 2022 Satadal Das., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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