Abstract

• The present study deals with the seasonal variation of algae and water analysis of Twin Taung Lake, Budalin Township, Monywa District, Sagaing Region. Algae and water samples were collected from October, 2018 to September, 2019. Physico-chemical parameters were analyzed in the laboratory of Department of Quality Control, June Pharmaceutical and Food Industry in Sagaing. Statistical analysis was carried out using R Studio software. Totally 35 species of Cyanophyceae were classified and recorded. Among them, Chroococcus, Microcystis, Anabaenopsis occurred throughout the year. Maximum values of temperature, sodium bicarbonate, total hardness and nitrate were found in summer; sodium carbonate, total alkalinity and total chloride were in rainy season and the maximum pH and phosphate occurred in winter. Highest value of salinity was in January and April. Maximum density of Chroococcus and Anabaenopsis was observed in summer. The growth of Chroococcus was positively correlated with salinity and negatively correlated with total alkalinity and phosphate. Growth of Anabaenopsis was positively correlated with pH, salinity, total hardness and nitrate. Growth of Microcystis was observed in winter and it was significantly correlated with season and positively correlated with pH and total hardness. It may be due to fluctuations of physico-chemical parameters of water in three seasons.