Growth curves and cellular volumes of <i>Trichodesmium</i> cultures grown in blue, red and full spectrum white light.

<p><b>(a-b)</b> Growth curves of cultures grown in light supplied at 250 μmol photons m^-2 s^-1, and 6.7 and 67 pM Ni′, respectively. <b>(c-d)</b> Growth curves of cultures grown in light supplied at 680 μmol photons m^-2 s^-1, and 6.7 and 67 pM Ni′, respectively. Yellow-filled symbols indicate when cells for intracellular metal quota analyses were harvested. Error bars represent standard deviation of the value obtained from triplicate culture bottles.