Bacterial production in the western equatorial pacific: implications of inorganic nutrient effects on dissolved organic carbon accumulation and consumption

摘要

Bacterial production and concentrations of dissolved and particulate organic carbon (DOC and POC), in the upper 200 m water column were measured in the western equato- rial Pacific Ocean (0 deg S-8 deg. N, 137 deg -159 deg E). To test the effect of inorganic nutrients (NH_4~+ and PO_4~-3)on the turnover rates of glucose, nutrient enrichment experiments were performed with 0.8 μ filtrates of the surface seawater. Depth profiles of bacterial biom- ass, production and turnover rates ranged 1.4-9.4 mgC m~-3, 0.34-4.06 mgC m~-3 d~-1 and 0.13-0.36 d~-1, respectively.