CO2 Science

Survival Relative to Survival at Current pH
Echinoderms

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 4 3 7 7 10

Number of Organisms 2 3 6 5 4

Arithmetic Mean 0.89 1.10 0.73 0.83 1.05

Standard Error 0.01 0.17 0.15 0.19 0.05

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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.

Arbacia punctulata [Purple Urchin] 1 1.49 0 1 0.75 0 1 1 0
Crossaster papposus [Sea Star] 1 1.14 0
Echinometra mathaei [Rock Boring Sea Urchin] 2 0.9 0
Eucidaris tribuloides [Pencil Urchin] 1 0.81 0 1 0.6 0 1 1.2 0
Hemicentrotus pulcherrimus [Sea Urchin] 2 0.87 0.1
Lytechinus variegatus [Green Sea Urchin] 1 1.00 0.00 1 1.00 0.00
Ophiothrix fragilis [Brittlestar] 1 0 0 1 0 0
Ophiura ophiura [Serpent Star] 1 1.00 0.00 1 1.00 0.00 2 1.00 0.00
Paracentrotus lividus [Purple Sea Urchin] 2 1.00 0.00 2 1.00 0.00 6 1.00 0.00
Strongylocentrotus purpuratus [Purple Sea Urchin] 2 1.01 0.07