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VOL. 7, ISSUE 2 (2022)
A comparative analysis of the ecology of cyanobacterial bloom and water parameters in two lentic ecosystem of Kamrup district of Assam, India
Authors
Jayati Das, Mautushi Das
Abstract
Cyanobacterial population in blooms are an important component of algal bloom in the tropical regions. Bloom-forming cyanobacteria form an important part of the diverse group of phototrophs that comprise the phytoplankton and are influenced by an array of environmental conditions. The occurrence and abundance of cyanobacterial population was studied during the winter and premonsoon season of 2020-2021. Samples were collected seasonally. Some physico-chemical parameters of water such as water temperature, pH, Dissolved Oxygen(DO), Biological Oxygen Demand (BOD), NO3-N, PO4-3-P, Total Nitrogen (TN), Total Phosphorus (TP), etc. were studied and their relationship with the bloom formation by cyanobacteria are discussed. Microcystis aeruginosa was the most dominant species during the bloom period. The formation and persistence of natural bloom of cyanobacteria, especially Microcystis was found to be triggered by relatively high temperature, alkaline pH and nutrient enrichment by nitrogen and phosphorus. Variability of cyanobacterial populations was seen in response to different or changing environmental conditions. These changes indicate the importance of short-term and long-term observations of the waterbodies for understanding the variation in phytoplankton groups in a lentic ecosystem.
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Pages:269-274
How to cite this article:
Jayati Das, Mautushi Das "A comparative analysis of the ecology of cyanobacterial bloom and water parameters in two lentic ecosystem of Kamrup district of Assam, India ". International Journal of Botany Studies, Vol 7, Issue 2, 2022, Pages 269-274
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