Abstract:
Surface and bottom water samples collected along the Mandovi and Tuan estuaries in Goa, comprising ten sampling stations in each estuary, were analyzed tor different physico-chemical parameters such as temperature, chlorinity, pH, alkalinity and dissolved oxygen (DO). The sampling were carried out during three seasons, viz., pre-monsoon (February-May), Monsoon (June-September), Post-monsoon (October-January). Higher water temperature (29 degrees C) observed in non-monsoonal season is explained on the basis of atmospheric heating. Chlorinity was found to be high in non-monsoonal season indicating negligible influence of fresh water, pH (2.6) and alkalinity (1.91 m. eq L sup(-1)) registered higher values in non-monsoonal seasons. In both the estuaries concentrations of dissolved oxygen were found to be higher (6.40 mg/L sup(-1)) in monsoon.
