53 



a 



1.00- 



• 



o 







** 





• • 



03 









0.90- 







0.80- 





>* 







A 









0.70- 





« 







&• 



0.60- 





o 







fl 



0.50- 













»m> 









0.40- 





a 

 e 

 u 

 An 



0.30 



T ' r 



40 60 80 



TSI(AVG) 



Figure 3. Proportion of diatom assemblage 

 that periphyton represent versus 

 TSI(AVG) for 29 lakes in survey. 



100 



