25 



c 

 o 



-£ 20 

 it: 

 o — 



(J OJ 



•|.> 15 



ro to 

 oi — 

 >- 3 

 O P 



Oj —J 



<-- o 

 o ^ 







10 



102 



10 1 10° 101 



Particle size ( /jm) 



( 



Figure 5-33. 



Generalized size distribution of organic carbon particles in 

 seawater (adapted from Sharp 1973). 



DISSOLVED 



ORGANIC 



MATTER 



PARTICULATE 



ORGANIC 



MATTER 



MJO^ 



PHYTOPLANKTON 

 AND ATTACHED 

 MACROALGAE 



i I 



ZOOPLANKTON 

 AND HIGHER 

 CONSUMERS 



BACTERIA 



BENTHIC 

 COMMUNITY 



SEDIMENTS 



c 



2 



g 



h- 

 < 



a. 



c 



c 



Figure 5-34. 



Schematic diagram of the organic matter cycle in the estuarine 

 system. 



5-66 



( 



