Table 1. Water chemistry data.
| scenario | ||||
|---|---|---|---|---|
| PD | B1 | A1FI | HIRS reef flat | |
| temperature (°C) | 22.48 ± 0.72 | 24.76 ± 0.94 | 26.61 ± 1.33 | 22.70 ± 1.20 |
| pHTotal | 8.17 ± 0.005 | 8.01 ± 0.006 | 7.85 ± 0.007 | 8.11 ± 0.11 |
| pCO2 (μatm) | 386.96 ± 35.04 | 607.52 ± 48.49 | 970.03 ± 65.53 | 355.38 ± 12.06 |
| total alkalinity day (μmol Eq L-1) | 2235 ± 39 | 2226 ± 45 | 2223 ± 51 | 2246.6 ± 35.4 (mean of day and night) |
| total alkalinity night (μmol Eq L-1) | 2226 ± 20 | 2225 ± 21 | 2225 ± 19 | |
| ammonium (mg L-1) | 0.0036 ± 0.0009 | 0.0044 ± 0.0021 | 0.0048 ± 0.002 | 0.0085 ± 0.001 |
Mean temperature (recorded in 10 min intervals), pHTotal (recorded 5 times daily), total alkalinity (measured once a week at midday and midnight), and ammonium concentration measured in aquaria (15th October 2010) and on the reef flat about 100 m from the seawater intake (daily). pCO2 was measured in the sumps (logged continuously every 3 min) and calculated in CO2SYS (developed by E. Lewis and W.R. Wallace) for the reef flat based on twice daily alkalinity and salinity sampling, and continuous temperature and pH monitoring at 10 minute intervals (see [53] for details). PD = present-day scenario, B1 = “reduced” emission scenario, A1FI = “business-as-usual” scenario. Mean ± SD for all values.