CO2 Science

Fertility Relative to Fertility 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 0 0 20 25 61

Number of Organisms 0 0 5 6 6

Arithmetic Mean 0.00 0.00 1.00 0.87 0.70

Standard Error 0.00 0.00 0.00 0.10 0.10

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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.

Echinometra mathaei [Rock Boring Sea Urchin] 2 1 0 2 0.99 0 6 0.59 0.1
Heliocidaris erythrogramma [Sea Urchin] 3 0.99 0 3 0.97 0 3 0.98 0
Hemicentrotus pulcherrimus [Sea Urchin] 6 1.02 0 6 0.99 0.1 18 0.77 0.1
Holothuria spp. [Sea Cucumber] 1 0.99 0 2 0.34 0 2 0.23 0.1
Paracentrotus lividus [Purple Sea Urchin] 8 1.00 0.00 9 0.98 0.01 29 0.85 0.05
Tripneustes gratilla [Collector Urchin] 3 0.96 0.03 3 0.75 0.13