Table 1.

Experimental seawater chemistry parameters: salinity, dissolved oxygen (DO), pCO2, total alkalinity (AT ± standard deviation from the mean). Loch Fyne natural seawater chemistry parameters. Salinity, DO and temperature are averages collected manually throughout experiments, and pCO2 given is the averaged values logged throughout the six months of experiments (logging every 5 min) using LI-COR software. Bicarbonate (Embedded Image) and carbonate (Embedded Image), calcite saturation state (Ω Ca) and aragonite saturation state (Ω Ar) were calculated from measured parameters using CO2Sys.

experimental conditionsalinity (ppt)DO (%)temperature (°C)pCO2 (µatm)AT (μmol kg−1)Embedded Image (μmol kg−1)Embedded Image(μmol kg−1)Ω CaΩ Ar
380 µatm ambient32.78 ± 1.4295.58 ± 1.849.40 ± 0.36375.62 ± 9.69635.24 ± 28.93590.311.90.290.18
380 µatm ambient plus 2°C36.10 ± 1.4597.54 ± 2.4011.58 ± 0.69375.62 ± 9.69703.05 ± 78.66641.616.70.390.25
550 µatm ambient32.74 ± 1.5699.04 ± 2.1910.01 ± 0.56553.59 ± 62.65970.76 ± 186.48908.919.70.470.30
750 µatm ambient28.42 ± 4.0798.64 ± 4.7810.28 ± 0.34768.74 ± 41.63753.64 ± 55.16725.78.40.210.13
750 µatm ambient plus 2°C36.58 ± 3.8497.76 ± 2.5512.34 ± 0.43768.74 ± 41.63681.39 ± 41.61649.08.70.210.13
1000 µatm ambient34.18 ± 4.5898.66 ± 1.9710.23 ± 0.401132.53 ± 31.74698.32 ± 5.77678.25.60.130.08
1000 µatm ambient plus 2°C37.26 ± 2.1497.55 ± 1.9812.04 ± 0.351132.53 ± 31.74642.06 ± 27.60621.35.40.130.08
Loch Fyne variability19.33 ± 7.4699.36 ± 12.9915.70 ± 4.15341.17 ± 102.571261.95 ± 416.391170.56 ± 430.4234.37 ± 18.990.88 ± 0.470.52 ± 0.29
Loch Fyne (lowest total alkalinity values)17.8011612.80250.8 ± 3.7876.10 ± 12.62798.39 ± 11.7529.19 ± 0.440.68 ± 0.010.39 ± 0.01