Percent Dry Weight (Biomass) Increases for
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 [Avena barbata Pott ex Link (Slender Oat), Bromus hordeaceus L. (Soft Brome), Hemizonia congesta DC. (Hayfield Tarweed), Lotus wrangelianus Fisch. & C.A. Mey. (Chilean Birdsfoot Trefoil), and Nassella pulchra (A.S. Hitchc.) Barkworth (Tussock Grass)]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
2
 
 
 Arithmetic Mean
20.5%
 
 
 Standard Error
2.5%
 
 

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Hungate et al. (1997)

open-top chambers, detrital roots,low nutrients
24%

 

 

Hungate et al. (1997)

open-top chambers, detrital roots,high nutrients
17%

 

 

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