Primary Producers 181 



?g 500 r a. 1970 



E 



(Cy) Cyanophyta 



(Chr) Chrysophyta 



(Cr) CryptophytQ 



(Chi) Chlorophyta 



(D) Diatoms 



(E) Euglenophyta 

 (H) Heterokondae 

 (Ul) Unidentified Cells 



FIGURE 5-2. Biomass (wet weight) and proportional 

 distribution of algal groups in the phytoplankton of Pond B. 



