Table 1.

Physical-chemical variables and main carbonate parameters measured in situ and in control or acidified treatments.

System		S	T (°C)	pH	TA	DIC	pCO2	HCO3−	CO32−	ΩAr	ΩCa
					(µmol kg−1)	(µmol kg−1)	(µatm)	(µmol kg−1)	(µmol kg−1)
in situ conditions		13.6 ± 0.5	38.1 ± 0.2	8.06 ± 0.01	2586 ± 4	2332 ± 3	416 ± 1	2115 ± 3	210 ± 4	2.72 ± 0.01	4.17 ± 0.01
Control (86 days average)	Coral alone	13.5 ± 0.1	37.6 ± 0.1	8.14 ± 0.01	2699 ± 61	2399 ± 53	362 ± 9	2169 ± 46	217 ± 8	4.80 ± 0.19	3.31 ± 0.13
	Coral + Coralligenous	13.6 ± 0.1	37.5 ± 0.1	8.13 ± 0.01	2648 ± 60	2357 ± 53	363 ± 9	2135 ± 47	208 ± 7	4.62 ± 0.16	3.18 ± 0.11
Acidified Treatment (86 days average)	Coral alone	13.4 ± 0.1	37.5 ± 0.1	7.84 ± 0.01	2843 ± 35	2669 ± 13	818 ± 97	2494 ± 21	144 ± 21	3.19 ± 0.46	2.20 ± 0.31
	Coral + Coralligenous	13.6 ± 0.1	37.6 ± 0.1	7.84 ± 0.01	2790 ± 37	2621 ± 20	807 ± 87	2451 ± 24	139 ± 19	3.09 ± 0.42	2.13 ± 0.29
Acidified Treatment (on day 86)	Coral alone	13.4 ± 0.2	37.8 ± 0.2	7.74 ± 0.01	2767 ± 50	2663 ± 39	1064 ± 33	2522 ± 33	100 ± 7	2.21 ± 0.16	1.53 ± 0.11
	Coral + Coralligenous	13.4 ± 0.2	37.8 ± 0.1	7.74 ± 0.01	2692 ± 87	2588 ± 82	1020 ± 24	2451 ± 76	98 ± 5	2.18 ± 0.11	1.50 ± 0.08

For the controls and acidified treatments, reported are salinity (S); temperature (T); total alkalinity (TA); dissolved inorganic carbon (DIC); partial pressure of carbon dioxide (pCO₂); bicarbonates concentration (HCO₃⁻); carbonates concentration (CO₃²⁻); aragonite saturation state (Ω_Ar); calcite saturation state (Ω_Ca).