DIURNAL VARIATION IN HYDROBIOLOGY OF A SHALLOW DERELICT POND AT ALIGARH (UTTAR PRADESH)

Abundance of Lepocinclis sp., Euglena Oxyuris, Stauroneis sp., Closterium sp., Daphnia sp., Cyclops sp., Epiphanes sp., Brachionus sp., show a distinct diurnal variation in a shallow derelict pond during late winter. A marked fluctuation in air and water temperatures, dissolved oxygen, pH, free carbon dioxide, carbonates and bicarbonates was also observed.