0.12 



0.10 



0.08 



0.06 





(J 



4. 



0.04 



0.02 ■ 



Primary Producers 191 



Zfj. flogellotes 

 6^ flogellotes 

 Rhodomonos minufo 

 Chromulino sp. 



0830 1130 



to to 



1130 1420 



1420 



to 

 1720 



1720 2030 



to to 



2030 2340 



Time 



2340 



to 

 0240 



0240 



to 

 0530 



0530 



to 

 0830 



FIGURE 5-7. Primary productivity of four groups of 

 phytoplankton studied by track autoradiography. This is 

 the same experiment as the one shown in Figure 5-3. 



0.04 r 



3/i. flagellates 

 6^ flogellotes 

 Rhodomonos minuto 



Chromulino sp. 



Time 



FIGURE 5-8. Primary productivity per unit of biomass 

 (specific growth rate) for four groups measured by track 

 autoradiography (see Figures 5-3 and 5-7). 



