LIGHT 



TEMPERATURE 



TURBIDITY 



SHADING 



NUTRIENTS 



NUTRIENTS 

 REGENERATION BY 

 DEMERSAL FAUNA 



BACTERIAL REDUCTION 

 OF ORGANIC MATERIAL 

 IN WATER 8 SEDIMENT 

 WATER INTERFACE 



(a) BOX AND ARROW DIAGRAM 



(b) ENERGY CIRCUIT DIAGRAM 



Figure 21. Simplified conceptual model of the generalized shelf assemblage pre- 

 sented as both a box and arrow diagram (a) and as an energy circuit diagram (b), 



47 



