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Growth Relative to Growth 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
5
1
24
37
48
Number of Organisms
3
1
7
7
5
Arithmetic Mean
0.58
0.89
1.04
1.14
0.83
Standard Error
0.17
0.00
0.10
0.15
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.
Crossaster papposus
[Sea Star]
3
2.04
0.4
Echinometra mathaei
[Rock Boring Sea Urchin]
2
0.29
0.21
Heliocidaris erythrogramma
[Sea Urchin]
6
0.77
0.09
12
0.81
0.10
12
0.61
0.06
Hemicentrotus pulcherrimus
[Sea Urchin]
2
0.47
0.4
2
0.88
0
2
0.82
0
4
0.64
0.1
Lytechinus variegatus
[Green Sea Urchin]
1
0.89
0.00
1
0.78
0.00
Ophiura ophiura
[Serpent Star]
10
1.51
0.33
10
1.24
0.07
20
1.21
0.23
Paracentrotus lividus
[Purple Sea Urchin]
2
1.01
0.01
4
0.94
0.03
10
0.66
0.11
Pisaster ochraceus
[Sea Star]
2
1.35
0
Sterechinus neumayeri
[Antarctic Sea Urchin]
1
0.98
0.00
1
0.98
0.00
Strongylocentrotus purpuratus
[Purple Sea Urchin]
4
0.99
0.02
Tripneustes gratilla
[Collector Urchin]
2
1.17
0.08
2
1.03
0.01
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