448 



J. L. Tiwari et al. 



FIGURE 10-3. The model simulation of sur- 

 face and buried benthic algae biomass. The 

 solid circles represent the measured algal 

 biomass (0 to 5 cm). 



240 



200 



'E 



o 160 



e 



c 

 o 



o 



E 



01 



120 



80 - 



40 



0^ 



20 



5 12 18 24 30 36 42 48 54 60 

 Time, days 



FIGURE 10-4. Field measurements (solid line) and 

 the model simulation (dashed line) of the biomass of 

 plgnktonic algae in Pond B. 



