87 



Oh 

 O 



H 



OX) 



o 



1.00- 



0.75- 



0.50- 



0.25- 



0.00- 



-0.25 - 



-0.50 - 



-0.75 - 



-1.00 



'.*•.* 



+* ++ 



»V 



■I--*- 



•• 



•t 



o N-limited 

 + balanced 

 • P-limited 



— « 1 ' 1 ' 1 ' 1 ' 1 ' 1 ^ 



3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 

 Log limnetic total P 



10 



Figure 9. Log-transformed total P versus 

 log-transformed TROPHl diatom 

 index for 51 lakes. 



