630 



ANDERSON AND LENAT 



E 



d 



> 



CO 



300 

 250 

 200 

 150 

 100 

 50 



Year 4 



.^> 



OH 



Year 5 



Keratella crassa 



Year 6 



J ASONDJ FMAMJ J ASONDJ FMAMJ JASONDJ FMAMJ J 

 1973 1 1974 \ 1975 1 1976 



Fig. 6 Seasonal distribution of five major rotifer species from 

 Belews Lake. Data plotted from mean monthly euphotic-zone 

 density, all stations. 



