Ecology of Uppanar backwaters, Cuddalore: 2. Nutrients

A. Murugan, K. Ayyakkannu


Studies were carried out in Uppanar backwaters of Cuddalore (Lat. 11 degrees 42'N; Long. 79 degrees 46'E) to investigate the distribution ans seasonal variation of dissolved nutrients like reactive phosphate, nitrate, nitrite and silicate. The input of wastes from sewage outlets and coconut husk retting grounds near station 2 was found to have its bearing on the nutrient contents. Phosphate was well within the limit of 2.80 mu g at P/1 suggested for an unpolluted water. Nitrate concentration was on higher side during the study period. In general, negative correlation was found between salinity and nutrients


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