Table 1:
Water chemistry data measured daily (pCO2, salinity and temperature) and twice weekly (alkalinity and pHtot), during the 50 day exposure experiment
| Parameter | Control | Elevated CO2 |
|---|---|---|
| pCO2 (μatm) | 442 ± 71 | 992 ± 119 |
| Alkalinity [μmol (kg sea water)−1] | 2162 ± 239 | 2149 ± 195 |
| Salinity (practical salinity units) | 25.9 ± 2.3 | 25.9 ± 2.3 |
| Temperature (°C) | 13.1 ± 2.4 | 13.1 ± 2.4 |
| pHtot (calculated) | 8.02 ± 0.05 | 7.69 ± 0.06 |
Abbreviations: pCO2, partial pressure of carbon dioxide; pHtot, total pH. The pCO2, alkalinity, salinity and temperature were measured, while the total pH was calculated with CO2calc (USGS, St Petersburg, Florida, USA). The data are presented as means ± SD.