0. 



i 



01 



•E 025 



Q. 



« 



0250 



■ TDP 

 SRP 



If 



175 



T (l 



j I ii 



T I -f -~ T • 



1 1 1 1 ii I L^_L_ 



JFMAMJJASOND 



J FMAMJ JASOND 



Figure 3. Seasonal dynamics of data and model output for 

 epilimnion (0-20 m) of Lake Ontario during 1972. (a) Total P; 

 (b) filterable P; (c) nitrate and nitrite; (d) dissolved 

 organic N; (3) soluble reactive Si. Data are lake-wide mean 

 + 1 S.D. From Scavia (1980a). 



63 



