47 



ORGANIC CARBON FLUXES IN THE GLOBAL OCEAN 



RIVER 



INPUT 



33 



RESPIRATION 

 3771 



627 



NEARSHORE 

 WATERS 



SEDIMENTS 

 (BURIAL) 



NET PRIMARY PRODUCTION 

 600 ^-" 3750 



3150 



OCEANIC 

 PHOTIC ZONE 



630 



OCEANIC 

 APHOTICZONE 



UNITS ARE 10 12 MOLES C YEAR' 1 



Figure 3. A simple model of organic carbon flux in the sea. 



