Productivity Studies in the Southeastern Arabian Sea

267-270Primary productivity, chlorophyll a, pheophytin, particulate organic carbon (POC), inorganic phosphate, ammonia, nitrate and zooplankton from 14 stations in October 1976 and 14 stations in December 1976 in the southeastern Arabian Sea were estimated. In the euphotic zone, daily primary productivity averaged 134 mgc/m2/day in October and 357.9 mgc/m2/day in December and chl.a averaged 6.44 mg/m2 and 10.6 mg/m2 respectively. Concentration of nutrients, likewise, were higher in December than in October, but POC was higher in October. Highly significant correlations between primary productivity and chlorophyll a and between chlorophyll a and nitrate and chlorophyll a and ammonia were observed