Composition and Distribution of Macrobenthic Invertebrate Fauna 



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ANNUAL RANGE IN BOTTOM WATER TEMPERATURE 



IN DEGREES CELSIUS 



Figure 85 

 Density and biomass of Sipunculida in relation to the annual range 

 of bottom water temperature. 



and 0.99% organic carbon. Abundances were low where 

 carbon was absent, but sipunculids were entirely absent 

 in sediments whose carbon levels were 2% or greater. 



Density of sipunculids ranged from 0.1 to slightly more 

 than 7 individuals/in 2 (Table 26), and biomass ranged 

 from <0.01 to a little more than 1.1 g/m 2 (Table 28). 



