Ecology of Alkalinity in Freshwater Pond at Chapra Bihar

At site I, the carbonate alkalinity ranged from 6.5mg/L (September,2012 to 12.6 mg/L March 2012) durning the first annual cycle. In second year, it varied from 4.9 mg/L (June, 2013) to 11.9mg/L (February, 2013) At site 2, of the lentic environment the minimum value was observed in July, 2012 (9.4mg/L) and maximum in December, 2011 (20.2mg/L) in the first year of study. During the second year the lowest value was in April, 2013 8.4 mg/L) and the hightest in February, 2013 (22.3 mg/L). The carbonate alkalinity in lentic environments did not depict any definite seasonality. At site I, the amplitude of variation of bicarbonate alkalinity was recorded from 186.1 mg/L (December, 2011) to 240 mg/L (June, 2012) and from 163.9 mg/L (February, 2012 to 258.8 mg/L (June, 2013) during the first and second year of investigation.