Percent Photosynthesis (Net CO2 Exchange Rate) Increases for
300, 600 and 900 ppm Increases in the Air's CO2 Concentration:


For a more detailed description of this table, click here.

Betula pendula Roth [European White Birch]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
7
 
 
 Arithmetic Mean
28.6%
 
 
 Standard Error
7.8%
 
 

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Eichelmann et al. (2004)

Seven-year-old saplings grown for three years in open-top chambers in Finland; clone K1659
14%

 

 

Eichelmann et al. (2004)

Seven-year-old saplings grown for three years in open-top chambers in Finland; clone V5952
14%

 

 

Heath et al. (2005)

Well-watered seedlings grown for just over one year in vertical sections of 16-cm-diameter polyethylene tubes supplied with 10 liters of fertilized soil containing 2.5 g/liter of slow release Osmocote fertilizer, all located within several 4.5-m-diameter Solardomes
14%

 

 

Heath et al. (2005)

Well-watered seedlings grown for just over one year in vertical sections of 16-cm-diameter polyethylene tubes supplied with 10 liters of unfertilized soil, all located within several 4.5-m-diameter Solardomes
76%

 

 

Rey and Jarvis (1998)

Seedlings grown for four years in open-top chambers
28%

 

 

Riikonen et al. (2005)

Well watered and fertilized 7-year-old trees grown for a further three years in open-top chambers in Finland; 3-year average of clone 4: V5952
33%

 

 

Riikonen et al. (2005)

Well watered and fertilized 7-year-old trees grown for a further three years in open-top chambers in Finland; 3-year average of clone 80: K1659
21%

 

 

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