Studies on the diversity of phytoplankton in the relation to physico-chemical parameters with respect to pollution status

Abstract

The water body is receiving domestic discharge leading to large amount of nutrient inputs and high amount of phosphate and nitrate in the water body indicates that water is eutrophic in nature. Continuous presence of Asplanchna, Brachionus, Keratella, Fillinia, Cyclops and Diaptomus is an indicator of organic pollution. The present study conducted during the year 2008 deals with zooplankton population and chemical characteristics of a sewage fed pond of Darbhanga. Sampling was done monthly between 8 am and 11 am from January to December 2008 to work out parameters such as air and water temperature, transparency, dissolved oxygen, total dissolved solids, pH, alkalinity, hardness, calcium, magnesium, hydroxide, carbonate, bicarbonate and conductivity.