300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Acer saccharum [Sugar Maple]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
64%
|
|
|
| Standard Error |
9%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Ellsworth et al. (2004)6 |
Plants grown under natural conditions for three years in a FACE study
|
74%
|
|
|
|
Gaucher et al. (2006)6 |
Well watered and fertilized two-year-old seedlings in 16-L pots filled with sandy loam that had grown between 60 and 85 days out-of-doors in open-top chambers in air with ambient O3 concentration
|
76%
|
|
|
|
Gaucher et al. (2006)6 |
Well watered and fertilized two-year-old seedlings in 16-L pots filled with sandy loam that had grown between 60 and 85 days out-of-doors in open-top chambers in air with three times the ambient O3 concentration
|
42%
|
|
|
|
Williams et al. (1986) |
pots (8.2 liter)
|
|
|
|