Comparative physico-chemical analysis of uppanar estuary and killai back water from tamilnadu coast with special reference to their nutrient status

Seasonal variations of physico-chemical parameters such as rainfall, temperature, alkalinity, nitrite, nitrate, phosphate, sulphate and fluoride were studied from two different coastal water bodies of south east coast of India viz., Uppanar estuary, Cuddalore and Periyavaikal area of Killai region, Cuddalore District, Tamilnadu southeast coast of India for one calendar year. The results significantly increased levels of most of the parameters at Uppanar estuary than Killai backwaters throughout the year. There were significant variations among the parameters at various months / seasons within each of the study sites also. The spatio-temporal variations observed among the physicochemical parameters of the two study sites indicate the ecological degradation of Uppanar estuary.