Sediment pore-water and above-sediment estuarine water properties at the five stations along the BES. Stations differed significantly in pore-water salinity (Wald =121.2; p <0.001) [A] and pH (Wald =14.2; p <0.006) [B]. ‘a’ and ‘b’ indicating significant difference at 5% level. The pore-water salinity and pH is correlated [C]. Estuarine water salinity and pH data were taken from Marshall et al. ; their study did not cover the site S1, hence the salinity and pH data were not available for S1.