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 alleghaniensis Britt. [Yellow Birch]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
6
6
6
 Arithmetic Mean
35%
14.2%
0%
 Standard Error
5.9%
12.9
0%

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Catovsky and Bazzaz (1999)

glasshouse, wet
10%

Catovsky and Bazzaz (1999)

glasshouse, intermediate
32%

Catovsky and Bazzaz (1999)

glasshouse, dry
36%

Gu et al. (2008)

Photosynthesis of well watered and fertilized plants growing in a commercial potting mix in 3.8-liter pots. Measurements made of fifth leaf on 1.2-m height plants as the air's CO2 concentration was raised by 100 ppm every 15 minutes
60%

85%

Wayne et al. (1998)

Seedlings grown for two months in controlled environment glass cabinets at day/night temperatures of 26/21?C
36%

Wayne et al. (1998)

Seedlings grown for two months in controlled environment glass cabinets at day/night temperatures of 31/26?C
36%


Printer Friendly Version