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


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Pteridium aquilinum [Bracken]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
4
 
 
 Arithmetic Mean
45.3%
 
 
 Standard Error
20.5%
 
 

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Caporn et al. (1999)

Plants grown for 19 months in controlled environment chambers at normal and high levels of soil fertility
0%

 

 

Zheng et al. (2008)

Fronds of well watered and fertilized three-week-old plants grown from rhizome cuttings for 20 more days in pots containing 1 kg of local topsoil with no copper (Cu) contamination (0 mg Cu/kg soil), while exposed to CO2 enrichment from only 08:00 to 11:00 a.m. on days that were sunny
33%

 

 

Zheng et al. (2008)

Fronds of well watered and fertilized three-week-old plants grown from rhizome cuttings for 20 more days in pots containing 1 kg of local topsoil contaminated with copper (Cu) at 50 mg Cu/kg soil, while exposed to CO2 enrichment from only 08:00 to 11:00 a.m. on days that were sunny
36%

 

 

Zheng et al. (2008)

Fronds of well watered and fertilized three-week-old plants grown from rhizome cuttings for 20 more days in pots containing 1 kg of local topsoil contaminated with copper (Cu) at 150 mg Cu/kg soil, while exposed to CO2 enrichment from only 08:00 to 11:00 a.m. on days that were sunny
112%

 

 

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