CO2 Science

Calcification Relative to Calcification at Current pH
Corals

Statistics

Decline in pH from the Present

0.0 to 0.09 0.09 to 0.17 0.17 to 0.3 0.3 to 0.5 More than 0.5

Number of Results 13 13 44 31 22

Number of Organisms 4 6 9 7 7

Arithmetic Mean 1.16 0.76 0.98 0.64 0.34

Standard Error 0.55 0.17 0.14 0.14 0.11

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Decline in pH from the Present

0.0 to 0.09 0.09 to 0.17 0.17 to 0.3 0.3 to 0.5 More than 0.5

Organism Name No. Mean Std.
Err. No. Mean Std.
Err. No. Mean Std.
Err. No. Mean Std.
Err. No. Mean Std.
Err.

Acropora digitifera [Acropora Coral] 2 1.04 0.06 1 0.75 0.00 2 0.78 0.16
Acropora eurystoma [Staghorn Coral] 4 3.05 0.64 2 1.03 0.02 4 1.93 0.28 6 0.35 0.20
Acropora sp. [Staghorn Coral] 1 1.25 0 1 1.17 0
Astrangia poculata [Northern Star Coral] 8 0.96 0.06
Cladocora caespitosa [Pillow Coral] 16 1.13 0.08
Coral assemblage of porites compressa and montipora verucosa [] 2 0.89 0.08 3 0.58 0.19
Scleractinian coral colonies [] 1 0 0
Sand community [] 1 0.73 0 1 0.46 0
Coral community [] 1 0.92 0 1 0.83 0
Madracis aurentenra [Yellow Pencil Coral] 2 0.52 0.1 2 1.16 0.1 1 0.96 0
Oculina arbuscula [Ivory Bush Coral] 6 0.33 0.19 6 0.00 0.00 6 0.31 0.18 6 0.00 0.00 6 0.11 0.06
Porites compressa [Finger Coral] 4 0.51 0.1
Porites lutea [Stony Coral] 11 0.44 0.1 1 0 0
Porites sp. [Porites] 2 0.38 0.07
Stylophora pistillata [Smooth Cauliflower Coral] 2 0.92 0.04 5 0.84 0.03 6 0.60 0.07