300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Tsuga canadensis (L.) Carr. [Eastern Hemlock]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
34%
|
|
|
| Standard Error |
4.5%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Bazzaz et al. (1990) |
2-L pots in greenhouse
|
25%
|
|
|
|
Godbold et al. (1997) |
glasshouse, roots
|
44%
|
|
|
|
Godbold et al. (1997) |
glasshouse, whole plant
|
33%
|
|
|