Biomass
concentration (as dry weight) was similar
P < 0:05 in
the two media after 12 days when cultivated at
66 lmol photon mÿ2 sÿ1 : 0:39 g lÿ1 for complex medium and 0:38 g lÿ1 for control medium. When light ¯ux
was increased to 144 lmol photon mÿ2 sÿ1, biomass
concentration also increased as expected for light limited
cultures. In this latter case, biomass concentration (as
dry weight) in the complex medium was also similar
P < 0:05 with a value of 0:77 g lÿ1, to the one observed in the synthetic medium
0:67 g lÿ1