Annual mean organic carbon fluxes in the South China Sea basin (IMAGE)
Caption
Model calculates the flux of carbon fixation and transformation to POC and DOC. The NPP represents the carbon fixed by phytoplankton and provides sources for DOC and POC. The mortality of phytoplankton and grazing by zooplankton forms detritus that are exported to the depth. The flux from phytoplankton dynamics to LDOC/SLDOC pools can be separated into growth- and mortality-related fluxes. The zooplankton, bacteria and LDOC/SLDOC pools form a microbial loop that transforms DOC to POC. Meanwhile, the bacteria also transforms LDOC/SLDOC to RDOC. Photo credit: Wentao Ma
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