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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 papyrifera Marsh. [Paper Birch]

Journal Reference
Experimental Conditions
300 ppm

600 ppm
900 ppm
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 60 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 10 mg N per liter soil
43%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 60 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 80 mg N per liter soil
51%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 60 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 150 mg N per liter soil
28%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 60 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 220 mg N per liter soil
55%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 60 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 290 mg N per liter soil
58%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 80 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 10 mg N per liter soil
12%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 80 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 80 mg N per liter soil
35%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 80 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 150 mg N per liter soil
18%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 80 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 220 mg N per liter soil
42%
 
 
Cao et al. (2007)
Photosynthesis of initially-7-week-old well watered and fertilized seedlings grown within greenhouses for 80 more days in pots filled with a 1:1 mix of peat moss and vermiculite augmented with 290 mg N per liter soil
35%
 
 
glasshouse, wet
21%
 
 
glasshouse, intermediate
38%
 
 
glasshouse, dry
41%
 
 
Ellsworth et al. (2004)
Plants grown under natural conditions for three years in a FACE study
26%
 
 
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 varied by 100 ppm every 15 minutes
42%
60%
 
Karnosky et al. (2005)
Plants grown from the young seedling stage for three years under natural environmental conditions at the Aspen FACE site near Rhinelander, Wisconsin, USA
76%
 
 
Karnosky et al. (2005)
Plants grown from the young seedling stage for four years under natural environmental conditions at the Aspen FACE site near Rhinelander, Wisconsin, USA
101%
 
 
Kubiske and Pregitzer (1996)
open-top chambers, sun
57%
 
 
Kubiske and Pregitzer (1996)
open-top chambers, shade
7%
 
 
Kubiske and Pregitzer (1997)
open-top chambers, sun
87%
 
 
Kubiske and Pregitzer (1997)
open-top chambers, shade
71%
 
 
Riikonen et al. (2008)
Late-season photosynthesis (averaged over the growing season) of long-shoot leaves of trees in their 8th-9th years of CO2 enrichment at the Aspen FACE site near Rhinelander, Wisconsin (USA)
91%
 
 
Riikonen et al. (2008)
Photosynthesis (averaged over the growing season) of short-shoot leaves of trees in their 8th-9th years of CO2 enrichment at the Aspen FACE site near Rhinelander, Wisconsin (USA)
106%
 
 
Sefcik et al. (2006)
Photosynthesis of light-saturated seedlings grown for two years in open-top chambers within a 90-year-old northern hardwood forest in Michigan (USA)
85%
 
 
Tjoelker et al. (1998)
Seedlings grown for three months in controlled environment chambers at day/night temperatures ranging from 18/12 to 30/24°C (average results)
44%
 
 
Zhang and Dang (2005)
Well-watered and fertilized saplings grown from seed in containers (13.5 cm tall, 11 cm top diameter) in greenhouses for 2 months at a low soil temperatures of 7°C, followed by 2 more two months at a higher soil temperature of 10°C
35%
 
 
Zhang and Dang (2005)
Well-watered and fertilized saplings grown from seed in containers (13.5 cm tall, 11 cm top diameter) in greenhouses for 2 months at a medium soil temperatures of 17°C, followed by 2 more two months at a higher soil temperature of 20°C
42%
 
 
Zhang and Dang (2005)
Well-watered and fertilized saplings grown from seed in containers (13.5 cm tall, 11 cm top diameter) in greenhouses for 2 months at a high soil temperatures of 27°C, followed by 2 more two months at a higher soil temperature of 30°C
30%
 
 
Zhang and Dang (2006)
Photosynthesis of well watered plants grown from seed for 2.5 months at low fertility in large containers within environment-controlled greenhouses
38%
 
 
Zhang and Dang (2006)
Photosynthesis of well watered plants grown from seed for 2.5 months at high fertility in large containers within environment-controlled greenhouses
32%
 
 
Zhang and Dang (2006)
Photosynthesis of well watered plants grown from seed for 3.5 months at low fertility in large containers within environment-controlled greenhouses
33%
 
 
Zhang and Dang (2006)
Photosynthesis of well watered plants grown from seed for 3.5 months at high fertility in large containers within environment-controlled greenhouses
39%