Table 1:

Mean seawater data (±SEM) and range for each treatment (values to nearest integer, one or two decimal places)

	Temperature (°C)			pHNBS
Treatment	Mean	Range	Salinity (p.p.t.)	Mean	Range	Total alkalinity (μmol kg seawater−1)	Partial pressure of CO2 (μatm)
Control	29.2 (±0.1)	27.3–30.6	34.5	8.14 (±0.01)	8.11–8.17	2272 (±13)	451 (±16)
High CO2	29.3 (±0.1)	27.5–30.3	34.5	7.87 (±0.01)	7.84–7.89	2258 (±5)	946 (±29)