pH 

 83. 



8.0. 



BOUND COz 

 PPM 



77. 



NO. 



% OF 

 ALGAE 

 SPECIES 



7 5 3 01 



HARD 

 SEEPAGE 

 7+.LAKES 



Ti- 

 es. 



5.6. 

 NO. 

 SOFT 

 SEEPAGE 

 LAK,ES_^ 



GREEN BLUE- 

 ALGAE GREEN 

 ALGAE 



<w 



Figure 6. Diagram showing the relative number of hard and soft water 

 seepage lakes in a random sample of 100 Wisconsin lakes; their bound carbon 

 dioxide content (expressed in parts per million, the highest being 14); and 

 the percentages of green and blue-green algal species in their total algal Hora. 

 ( See discussion in text. ) 



[32] 



