J I I I I I I I I I l_ 



JFMAMJJASOND 



J FMAMJ JASOND 



JFMAMJJASOND 



Figure 4. Seasonal dynamics of data and model output from 

 epilimnion (0-20 m) of Lake Ontario during 1972. (a) Small 

 diatoms; (b) large diatoms; (c) blue-greens; (d) small others; 

 (e) large others. $ - lake-wide mean + 1 S.D. for surface 

 samples and ■ - lake-wide mean for depth-integrated profiles. 

 From Scavia (1980a). 



64 



