Figure 4
From: Water motion and pH jointly impact the availability of dissolved inorganic carbon to macroalgae
The concentrations of CO2, CO32− and HCO3− in the ambient pH 8.1 and the low pH 7.6 treatment from the DIC uptake laboratory experiments. The low pH conditions cause a shift in the speciation to a higher concentration of CO2 and a lower concentration CO32− within the seawater. Values were calculated using the ‘seacarb’ package42 in R, using a temperature of 12 °C and a salinity of 35 psu, with the assumption that the photosynthesis of the ~ 1 g individuals during the incubations did not have a significant impact on the carbonate chemistry within the chambers.
