Effect of Elevated Carbon Dioxide on Two Scleractinian Corals: Porites cylindrica (Dana, 1846) and Galaxea fascicularis (Linnaeus, 1767)

Table 1

Water quality parameters (mean ± standard deviation) in the control and experimental aquaria. The reading was based on day 0 and subsequent daily measurements for fifteen days (n = 16).

	P. cylindrica		G. fascicularis
	Control	Elevated CO2	Control	Elevated CO2
CO2, 𝜇mol⋅ kg^−1	23.34 ± 3.46	70.07 ± 7.36	28.65 ± 2.67	64.77 ± 9.59
CO3^−2, 𝜇mol⋅ kg^−1	27.45 ± 1.34	15.17 ± 1.18	28.91 ± 2.32	15.57 ± 1.91
HCO3^−, 𝜇mol⋅ kg^−1	1016 ± 8	1072 ± 7	1018 ± 5	1066 ± 9
Salinity, %	35 ± 1	35 ± 1	35 ± 1	35 ± 1
Temperature, ^∘C	27 ± 1	27 ± 1	27 ± 1	27 ± 1
pH	8.19 ± 0.02	7.90 ± 0.05	8.18 ± 0.01	7.89 ± 0.03
Dissolved oxygen, mg O2L^−1	6.31 ± 0.03	6.71 ± 0.09	6.37 ± 0.05	6.47 ± 0.08