Decomposers, Bacteria, and Microbenthos 365 



400 



300 - 



b.Pond B (1972), annual fluxHI.7g C m-^yr"' 



500 



400 



300 



200 



100 



2..,-l 



c.Pond J (1971), annual flux^l4.4g C m"'yr' 



I ' ' L. 



10 20 



Jun 



10 20 



Jul 



FIGURE 8-8. Flux of CO2 across the sediment surface of 

 Pond A in 1973, Pond B in 1972, and Pond J in 1971. 



