FIGURE 10.

(A) Fraction of absorbed light utilized in photochemistry (P, green span labeled for 700 μmol photons m^–2 s^–1), thermally dissipated (D, orange span labeled for 700 μmol photons m^–2 s^–1), and in excess (E, red span labeled for 700 μmol photons m^–2 s^–1) and (B) the product of the latter fractions and photosynthetic photon flux density incident (PPFD_i) upon L. gibba fronds as a function of growth PPFD. See the section “Materials and Methods” and Demmig-Adams et al. (1996a) for calculations. Mean values ± standard deviations, n = 3 for all growth PPFDs; different lower-case letters signify statistical differences at P < 0.05 via one-way analysis of variance and post hoc Tukey–Kramer HSD test.