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.

Picea abies (L.) Karst. [Norway Spruce]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
16
 
 
 Arithmetic Mean
52.6%
 
 
 Standard Error
5.8%
 
 

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Dalen and Johnson (2004)

Well watered plants grown from seed collected at either 60°N latitude in 50-ml pots within fumigation chambers at high soil nitrogen concentrations (15.7 mM N)
28%

 

 

Dalen and Johnson (2004)

Well watered plants grown from seed collected at 60°N latitude in 50-ml pots within fumigation chambers at low soil nitrogen concentrations (3.6 mM N)
41%

 

 

Dalen and Johnson (2004)

Well watered plants grown from seed collected at 66°N latitude in 50-ml pots within fumigation chambers at high soil nitrogen concentrations (15.7 mM N)
30%

 

 

Dalen and Johnson (2004)

Well watered plants grown from seed collected at 66°N latitude in 50-ml pots within fumigation chambers at low soil nitrogen concentrations (3.6 mM N)
16%

 

 

Egli et al. (1998)

open-top chambers
48%

 

 

Hall et al. (2013)

Photosynthesis of forty-year-old trees enclosed in whole-tree closed-top chambers and growing in the middle boreal sub-zone of northern Sweden in air of ambient temperature (TA)
45%

 

 

Hall et al. (2013)

Photosynthesis of forty-year-old trees enclosed in whole-tree closed-top chambers and growing in the middle boreal sub-zone of northern Sweden in air of elevated temperature (TE = TA with a monthly temperature increase ranging between+2.8°C in July/August and +5.6°C in December)
61%

 

 

Hall et al. (2009)

Photosynthesis of first-year shoots of well watered and fertilized 52-year-old trees enclosed in whole-tree chambers in northern Sweden (~64°N)
46%

 

 

Kosvancova et al. (2009)

Photosynthesis of fully developed leaves from the upper part of the crowns of well watered and fertilized seven-year-old trees grown for three seasons in glass-dome facilities in the Beskydy Mountains of the northeast Czech Republic
48%

 

 

Lhotakova et al. (2012)

Photosynthesis of needles of sun-exposed (3rd whorl) parts of the canopies of originally ten-year-old trees that were transplanted into native soil (that was given an initial fertilizer treatment) and grown for an additional eight years in the Beskydy Mountains of the Czech Republic within semi-open glass domes with adjustable windows
103%

 

 

Lhotakova et al. (2012)

Photosynthesis of needles of shaded (6th whorl) parts of the canopies of originally ten-year-old trees that were transplanted into native soil (that was given an initial fertilizer treatment) and grown for an additional eight years in the Beskydy Mountains of the Czech Republic within semi-open glass domes with adjustable windows
48%

 

 

Loewe et al. (2000)

growth chambers, mycorrhizal inoculated
54%

 

 

Loewe et al. (2000)

growth chambers, non-mycorrhizal
107%

 

 

Roberntz and Stockfors (1998)

Branches of thirty-year-old trees enriched to 340 ppm CO2 above ambient via branch bags
46%

 

 

Spunda et al. (1998)

open-top chambers
67%

 

 

Uddling and Wallin (2012)

Photosynthesis of one-year-old shoots of mature Norway spruce trees in the second/third year of their exposure to elevated CO2 while growing within whole-tree chambers at the Flakaliden forest experimental site in northern Sweden
54%

 

 

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