300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Populus fremontii S. Wats. [Fremont's Cottonwood]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
30.7%
|
|
|
| Standard Error |
15.9%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Sage and Sharkey (1987) |
field, air temperature 10°C
|
0%
|
|
|
|
Sage and Sharkey (1987) |
field, air temperature 20°C
|
25%
|
|
|
|
Sage and Sharkey (1987) |
field, air temperature 30°C
|
67%
|
|
|