Phytoplankton 





ILLInJUJ 



Nitrate 



278 325 278 580 532 246 



ULLLL 



Available Phosphorus 



Day 112 Day 140 Day 224 Day 280 Day 364 



Julian Day 



Figure 16. Frequency distributions of Monte Carlo output for four 

 state variables at selected time slices during annual simulation. 

 Day 50 distributions are initial distributions. 1000 cases were 

 used. From Scavia et al. (1981b). 



85 



