300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
California Annual Grassland on Sandstone-Derived Soil
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
2
|
2
|
2
|
| Arithmetic Mean |
21%
|
0%
|
0%
|
| Standard Error |
3.5%
|
0
|
0%
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Fredeen et al. (1998) |
Photosynthesis of plants growing in PVC-tube microsoms at mid-season peak growth under low nutrient status
|
16%
|
||
|
Fredeen et al. (1998) |
Photosynthesis of plants growing in PVC-tube microsoms at mid-season peak growth under high nutrient status
|
26%
|