46 



PRIMARY PRODUCTION 



\ 



METAZOA 



GRAZING 

 ZOOPLANKTON 



\ 



PREDATORS 



I 



MICROBIAL LOOP 



BACTERIA' 



\ 



MICROFLAGELLATES 

 FILIATES 



Figure 1. Division of energy flux between metazoans and microbial portions of the marine food web. From 

 Pomeroy and Weibe, 1988. 



PHYTOPLANKTON 



I 



ZOOPLANKTON 



FECES 



PROTOZOA 



POM 



- BACTERIA ^=^AGGREGATES 



* 



Figure 2. Detail of microbial loop (shaded portion). 



