Table 1. Mean temperature, pH, carbonate chemistry, alkalinity, and salinity (±1 SD) during the three-level carbon dioxide and two-level temperature experiments with Mercenaria mercenaria, and Argopecten irradians larvae.
| Parameter | Pre-industrial CO 2 | Ambient, present day CO2 | Elevated CO2 |
| Mercenaria mercenaria | |||
| Temperature (°C) | 24±0.7 | 24±0.7 | 24±0.7 |
| pH | 8.210±0.032 | 8.081±0.042 | 7.8±0.012 |
| pCO2 (ppm)* | 220.4±24.235 | 375.3±36.45 | 771.6±29.113 |
| Ωcalcite * | 2.86±0.50 | 2.68±0.51 | 1.51±0.15 |
| Ωaragonite * | 1.84±0.37 | 1.72±0.36 | 0.98±0.13 |
| Total DIC (µmol L1) | 1115.3±95.67 | 1374.1±62.89 | 1439.4±31.38 |
| CO3 2− (µmol L−1)* | 112.7±21.24 | 105.5±26.23 | 59.7±9.806 |
| Alkalinity (TA) (µmol kg1)* | 1296.8±121.3 | 1527.3±86.56 | 1509.3±27.69 |
| Salinity | 28.0±1.0 | 28.0±1.0 | 28.0±1.0 |
| Argopecten irradians | |||
| Temperature (°C) | 24±0.7 | 24±0.7 | 24±0.7 |
| pH | 8.200±0.026 | 8.080±0.059 | 7.810±0.016 |
| pCO2 (ppm)* | 238.4±25.012 | 373.9±41.540 | 756.2±19.986 |
| Ωcalcite * | 2.95±0.16 | 2.66±0.57 | 1.55±0.12 |
| Ωaragonite * | 1.9±0.42 | 1.72±0.45 | 1.00±0.24 |
| Total DIC (umol L−1) | 1176±56.27 | 1368.7±36.99 | 1517±35.45 |
| CO3 2− (µmol L1)* | 133.7±22.32 | 105.1±28.52 | 61.3±12.321 |
| Alkalinity (TA) (µmol kg1)* | 1359.6±35.98 | 1521.4±55.06 | 1517.1±46.66 |
| Salinity | 28.0±1.0 | 28.0±1.0 | 28.0±1.0 |
| Mercenaria mercenaria | |||
| Temperature (°C) | 28±0.7 | 28±0.7 | 28±0.7 |
| pH | 8.200±0.040 | 8.090±0.046 | 7.8±0.012 |
| pCO2 (ppm)* | 247.4±16.241 | 379.0±43.12 | 794.6±29.113 |
| Ωcalcite * | 3.43±0.53 | 3.17±0.56 | 1.75±0.15 |
| Ωaragonite * | 2.24±0.99 | 2.07±0.45 | 1.14±0.13 |
| Total DIC (µmol L1) | 1196±76.24 | 1389.2±53.45 | 1439.6±31.38 |
| CO3 2− (µmol L−1)* | 133.7±20.34 | 123.4±36.42 | 68.1±9.806 |
| Alkalinity (TA) (µmol kg1)* | 1404.3±123.61 | 1568.2±66.49 | 1522.8±27.69 |
| Salinity | 28.0±1.0 | 28.0±1.0 | 28.0±1.0 |
| Argopecten irradians | |||
| Temperature (°C) | 28±0.7 | 28±0.7 | 28±0.7 |
| pH | 8.210±0.029 | 8.08±0.054 | 7.810±0.026 |
| pCO2 (ppm)* | 239.8±13.078 | 386.7±44.23 | 772.7±29.951 |
| Ωcalcite * | 3.48±0.17 | 3.09±0.57 | 1.78±0.16 |
| Ωaragonite * | 2.27±0.78 | 2.01±0.42 | 1.16±0.14 |
| Total DIC (umol L−1) | 1189.1±53.57 | 1557.1±32.88 | 1433.6±30.21 |
| CO3 2− (µmol L1)* | 135.7±43.2 | 120.3±28.46 | 69.3±12.321 |
| Alkalinity (TA)(µmol kg1)* | 1400.8±65.25 | 1557.1±70.21 | 1519.4±36.45 |
| Salinity | 28.0±1.0 | 28.0±1.0 | 28.0±1.0 |
*Parameters calculated using CO2SYS.