300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Quercus pubescens Willd. [Downy Oak]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
5
|
|
|
| Arithmetic Mean |
136.8%
|
|
|
| Standard Error |
58.5%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Blaschke et al. (2001) |
growing naturally near CO2-emitting springs
|
63%
|
|
|
|
Rapparini et al. (2004) |
Mature deciduous trees growing close to a natural CO2 spring in central Italy and a nearby control site
|
44%
|
|
|
|
Stylinski et al. (2000) |
growing naturally near CO2-emitting springs for 40-50 yrs.
|
52%
|
|
|
|
Tognetti et al. (1998) |
Mature trees grown for 15 to 25 years in a basin containing CO2 springs and at a nearby control site of normal ambient CO2; early morning photosynthesis
|
135%
|
|
|
|
Tognetti et al. (1998) |
Mature trees grown for 15 to 25 years in a basin containing CO2 springs and at a nearby control site of normal ambient CO2; afternoon photosynthesis
|
390%
|
|
|