300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Helxine soleirolii
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
|
2
|
|
| Arithmetic Mean |
|
31.5%
|
|
| Standard Error |
|
3.2
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Mortensen (1984) |
growth chambers
|
|
27% |
|
|
Mortensen (1985) |
pots (11-cm)
|
|
36% |
|