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.

Holcus lanatus L. [Common Velvetgrass]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
11
 
 
 Arithmetic Mean
38.5%
 
 
 Standard Error
10.4%
 
 

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Barnard et al. (2004)

Plants grown from seed in mesocosms in naturally-lit controlled environment chambers for 15 months
34%

 

 

Barnard et al. (2005)

Aboveground biomass of well watered plantlets grown for 61 days in pots of a reconstituted sandy-loam soil within closed chambers in greenhouses
44%

 

 

Barnard et al. (2005)

Belowground biomass of well watered plantlets grown for 61 days in pots of a reconstituted sandy-loam soil within closed chambers in greenhouses
135%

 

 

Hunt et al. (1991)

pots (1 liter)
51%

 

 

Jongen and Jones (1998)

The final of four cuttings of adequately fertilized and watered plants grown from seed in pots out-of-doors in open-top chambers for 8 months
53%

 

 

Maestre and Reynolds (2007)

Well watered plants grown from seed in microcosms within growth chambers for 90 days with nitrogen homogeneously supplied
7%

 

 

Maestre and Reynolds (2007)

Well watered plants grown from seed in microcosms within growth chambers for 90 days with nitrogen heterogeneously supplied
12%

 

 

Soussana et al. (2005)

Well watered and fertilized plants grown from seed out-of-doors mixed with perennial ryegrass (Lolium perenne L.) in containers of sand in polyethylene-film tunnels and frequently cut
39%

 

 

Soussana et al. (2005)

Well watered and fertilized plants grown from seed out-of-doors mixed with perennial ryegrass (Lolium perenne L.) in containers of sand in polyethylene-film tunnels and infrequently cut
9%

 

 

Teyssonneyre et al. (2002)

plastic tunnels, three cuttings per year
13%

 

 

Teyssonneyre et al. (2002)

plastic tunnels, six cuttings per year
26%

 

 

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