Table 1.
Carbonate chemistry during mass measurements of O2 and inorganic carbon (Ci) fluxes in Emiliania huxleyi
| Acclimation | Carbonate chemistry | LDICHpH | HDICHpH | LDICLpH | HDICLpH |
|---|---|---|---|---|---|
| 2N LL | [CO2] | 12.4 ± 0.6 | 22.0 ± 0.8 | 24.0 ± 1.5 | 43.7 ± 1.8 |
| [HCO3 −] | 1370 ± 70 | 2500 ± 90 | 1420 ± 80 | 2590 ± 110 | |
| [H+] | 9.5 ± 0.2 | 9.5 ± 0.2 | 18.4 ± 0.3 | 18.4 ± 0.3 | |
| 2N HL | [CO2] | 13.6 ± 0.9 | 22.7 ± 1.0 | nd | 47.4 ± 2.0 |
| [HCO3 −] | 1560 ± 110 | 2730 ± 130 | nd | 2730 ± 110 | |
| [H+] | 9.1 ± 0.3 | 8.9 ± 0.3 | nd | 18.8 ± 0.3 | |
| 1N LL | [CO2] | 10.6 ± 0.5 | 20.5 ± 0.3 | 17.1 ± 0.5 | 40.9 ± 2.8 |
| [HCO3 −] | 1200 ± 50 | 2400 ± 30 | 1050 ± 30 | 2460 ± 160 | |
| [H+] | 9.2 ± 0.1 | 9.2 ± 0.1 | 17.4 ± 0.5 | 18.1 ± 0.0 | |
| 1N HL | [CO2] | 10.5 ± 0.6 | 18.6 ± 1.4 | 17.9 ± 1.8 | 32.5 ± 2.5 |
| [HCO3 −] | 1150 ± 70 | 2160 ± 130 | 1090 ± 120 | 1940 ± 200 | |
| [H+] | 9.3 ± 0.1 | 9.2 ± 0.1 | 17.5 ± 0.4 | 18.1 ± 0.5 |
Concentrations of CO2 (μmol kg−1), HCO3 − (μmol kg−1) and H+ (nmol kg−1) were assessed by means of mass spectrometry (n = 3; ± SD).
2N LL/HL, diploid life‐cycle stage acclimated to low/high light; 1N LL/HL, haploid life‐cycle stage acclimated to low/high light; LDICHpH, low dissolved inorganic carbon (DIC)/high pH; HDICHpH, high DIC/high pH; LDICLpH, low DIC/low pH; HDICLpH, high DIC/low pH; nd, not determined.