Assessment of the food-web structure, energy flows, and system attribute of northern South China Sea ecosystem Standing stock and production of phytoplankton in the northern South China Sea during winter of 2006 Research on nitrate concentrations of sea surface by remote sensing in the Northern South China Sea Composition and distribution of ciliates in northern South China Sea during summer Ciliate abundance and biomass in northern South China Sea in October 2007 Characteristics of phytoplankton community in the northern South China Sea in summer and winter Responses of phytoplankton growth on nutrient enrichments in the northern South China Sea