Table 1.
Water chemistry during January 2015 and September 2015 experiments. pHnbs, alkalinity, salinity and temperature were measured as described in Material and methods. pCO2, Ωaragonite and Ωcalcite were calculated using CO2SYS. Data presented as mean ± s.e.m.)
| oscillating acidification |
||||
|---|---|---|---|---|
| control | constant acidification | day | night | |
| January 2015 | ||||
| pHnbs | 7.91 ± 0.00 | 7.68 ± 0.01 | 7.89 ± 0.00 | 7.65 ± 0.03 |
| alkalinity (µmol kgSW−1) | 2234.04 ± 0.27 | 2232.81 ± 2.30 | 2233.99 ± 0.78 | 2233.70 ± 0.00 |
| salinity (PSU) | 33.4 ± 0.1 | 33.4 ± 0.1 | 33.4 ± 0.1 | 33.4 ± 0.1 |
| pCO2 (µatm) | 549 ± 5 | 983 ± 19 | 587 ± 4 | 1066 ± 66 |
| Ωaragonite | 1.90 ± 0.01 | 1.19 ± 0.02 | 1.80 ± 0.02 | 1.10 ± 0.06 |
| Ωcalcite | 2.95 ± 0.02 | 1.85 ± 0.03 | 2.80 ± 0.02 | 1.70 ± 0.09 |
| Temp (°C) | 16.5 ± 0.1 | |||
| September 2015 | ||||
| pHnbs | 7.93 ± 0.00 | 7.74 ± 0.01 | 7.93 ± 0.00 | 7.75 ± 0.00 |
| alkalinity (µmol kgSW−1) | 2235.40 ± 2.02 | 2234.60 ± 1.33 | 2234.40 ± 1.85 | 2245.00 ± 0.00 |
| salinity (PSU) | 33.5 ± 0.3 | 33.5 ± 0.3 | 33.5 ± 0.3 | 33.5 ± 0.2 |
| pCO2 (µatm) | 530 ± 3 | 859 ± 9 | 532 ± 4 | 845 ± 2 |
| Ωaragonite | 2.48 ± 0.02 | 1.73 ± 0.02 | 2.50 ± 0.03 | 1.80 ± 0.01 |
| Ωcalcite | 3.79 ± 0.04 | 2.64 ± 0.03 | 3.80 ± 0.04 | 2.70 ± 0.01 |
| Temp (°C) | 23.1 ± 0.1 | |||