Fig. 4
Internal calcification conditions in Porites astreoides. a Calcifying conditions were used to calculate aragonite saturation state at the site of calcification (Ωcf) and related to the measured growth rate of the individual corals11. b Calcification conditions as internal calcifying fluid pH (pHcf) and dissolved inorganic carbon ratio of calcifying fluid to seawater (DICcf/DICsw) was determined for 12 Porites astroides coral colonies collected from sites with naturally different seawater aragonite saturation state (Ωsw). Circles represent values for each individual coral colony (mean ± confidence interval). Filled and non-filled symbols denotes the different locations: filled are the centres of the ojos with lower Ωsw and non-filled the control high Ωsw site. Dashed line represents regression line for relative calcification rate with Ωcf (radj2 = 0.41, p = 0.015) and grey area denotes the 95% confidence band. Individual values are mean ± 95%-confidence interval
