Parameters Ra.fa. Temp Salin. pH DO NO2 NO3 NH4 IP SiO3 Pop. Den. Ra.fa. 1                     T -0.226 1                   Salin. -0.879** 0.493 1                 pH -0.715* 0.611 0.838* 1               DO -0.372 0.693* 0.476 0.603* 1             NO2 0.561* -0.725** -0.625* -0.739** -0.950 1           NO3 0.427 -0.727** -0.492* -0.674** -0.934 0.973 1         NH3 0.616** -0.622** -0.622** -0.755** -0.879 0.965 0.948 1       IP 0.525* -0.812 -0.610* -0.799** -0.891 0.957 0.947 0.910 1     SiO3 0.663** -0.619** -0.693** -0.711 -0.921 0.953 0.908 0.922 0.899 1   Pop. Den. -0.579** 0.571** 0.671** 0.640** 0.822 -0.807 -0.683 -0.734 -0.723 -0.844 1 *Correlation is significant at 5% level (P<0.05) **Correlation is significant at 1% level (P<0.01)

Table 7: Correlation (r) values between physico-chemical parameters, biological parameters and zooplanktons for station-I.