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(a) Correlations between β-Car/Chl a and Zx/Chl a ratios, (b) between Zx/Chl a and Vx/Chl a ratios, (c) between Zx/Chl a and Fx/Chl a ratios, and (d) between Vx/Chl a and Fx/Chl a ratios of the brown alga Sargassum fusiforme acclimated to three irradiance levels (30, 130, and 300 μmol photons m−2 s−1) and three nutrient levels (0, 5, and 25% Provasoli’s enriched seawater, PESI).
