Percent Dry Weight (Biomass) Increases for
300, 600 and 900 ppm Increases in the Air's CO2 Concentration:


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Pristine Tallgrass Prairie


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
3
 
 
 Arithmetic Mean
23.3%
 
 
 Standard Error
12.2%
 
 

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Owensby et al. (1999)

Root biomass of eight-year open-top-chamber study
50%

 

 

Owensby et al. (1999)

Open-top chambers, 3 years, above average precipitation, aboveground biomass
-2%

 

 

Owensby et al. (1999)

Open-top chambers, 5 years, below average precipitation, aboveground biomass
22%

 

 

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