Nitrogen - metabolism, Seawater - microbiology, Aquatic Organisms - growth & development, Biota, Seawater - chemistry, Biomass, Biodiversity, Plankton - growth & development, Water Movements, Diatoms - metabolism, Diatoms - growth & development, Nitrates - metabolism, Feedback, Physiological, Phytoplankton - growth & development, Phosphorus - metabolism, Pla...