Table 1.
Mean ± SD experimental system values over the 80 days experimental period for measured temperature (n = 80), salinity (n = 80), pH (n = 80) and alkalinity (n = 12) and calculated, dissolved inorganic carbon (DIC), bicarbonate (HCO3−), carbonate (CO32−), pCO2, calcite saturation state (Ωcal) and aragonite saturation state (Ωarag) for the three pH treatments.
| Control | Low, stable pH | Low, abrupt pH | |
|---|---|---|---|
| Temperature (°C) | 11.74 ± 0.34 | 11.51 ± 0.28 | 11.64 ± 0.33 |
| Salinity | 34.9 ± 0.34 | 35.0 ± 0.32 | 34.9 ± 0.41 |
| pH (T) | 8.18 ± 0.10 | 7.70 ± 0.14 | 7.75 ± 0.40 |
| Alkalinity (μmol kg−1) | 2975 ± 443 | 2964 ± 467 | 2991 ± 414 |
| DIC (μmol kg−1) | 2717 ± 420 | 2850 ± 489 | 3023 ± 556 |
| HCO3− (μmol kg−1) | 2498 ± 395 | 2696 ± 475 | 2810 ± 463 |
| CO32−(μmol kg−1) | 198 (±53) | 110 (±26) | 73 (±40) |
| pCO2 | 498 ± 161 | 1081 ± 488 | 2778 ± 4047 |
| Ωcal | 4.7 ± 1.26 | 2.62 ± 0.61 | 1.74 ± 0.94 |
| Ωarag | 3.0 ± 0.81 | 1.67 ± 0.39 | 1.11 ± 0.60 |