Published Paper Details:

Fluctuation in different abiotic and biotic factors of aquatic ecosystems at different hours of the day irrespective of day and night is known as 'diel cycle'. Diel cycle refers to the events that recur at 24 hours intervals or less, irrespective of day and nignt. Diurnal studies of water bodies given an idea about succesional changes in the physico - chemical parameters as well as biological spectrum of the water reservoir at different hours of the day. Diel cycle of some abiotic factores of Talla pond, Sukhjora,Ranishwar, Dumka,Jharkhand was assessed during summer season in the year 2012-2013. Maximum air temperature was found to be 29.60c at 3.00pm. and minimum 25.40c at 3:00am in summer water tempereture of pond flutuated in between at 26.20c at 3:00am. To 29 at 3:00pm pH ranged between7.2 to 7.5 Lowest dissolved oxygen (D02) .48 ppm was recorded at 3:00am and highest 4ppm at 3:00pm. Minimum amount 26ppm of free carbon dioxide (FC02) was analysde at 3:00am and maximum32ppm at 11:00pm. Carbonate (C03)alkalinity remainded completely absent throughout the entire period of diurnal study. Bicarbonate(HC03) varied from 242ppm at 7:00pm to 280ppm at 7:00am