Figure 3.

(a) Calcification rate and primary production (b) of Emiliania huxleyi at 215 and 703 generation points under present ocean condition (383 ± 43 µatm pCO₂, 20.0 ± 0.1°C; white bars) and future ocean condition (833 ± 68 µatm pCO₂, 24.0 ± 0.2°C; black bars). No data for 414 generation point. Values are averages of two replicates with three measurements each; error bars show standard deviation. Asterisks indicate statistically significant differences (*p < 0.05, **p < 0.01, ***p < 0.001) between treatments at each generation point.