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


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

Vallisneria tortifolia [Corkscrew Vallisneria]


Statistics
 
300 ppm
600 ppm
900 ppm
 Number of Results
2
2
2
 Arithmetic Mean
14%
28.5%
42.5%
 Standard Error
5.7%
11
16.6%

Individual Experiment Results

Journal References

Experimental Conditions
300 ppm
600 ppm
900 ppm

Idso (1997)

Adult plants trimmed to have 3 cm of blade length and 3 cm of root length planted in common aquarium gravel and grown for several weeks in non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them maintained at a temperature of 18.2?C (low T)
6%

 

 

Idso (1997)

Adult plants trimmed to have 3 cm of blade length and 3 cm of root length planted in common aquarium gravel and grown for several weeks in non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them maintained at a temperature of 24.5?C (high T)
22%

 

 

Idso (1997)

Adult plants trimmed to have 3 cm of blade length and 3 cm of root length planted in common aquarium gravel and grown for several weeks in non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them maintained at a temperature of 18.2?C (low T)
 

13%

 

Idso (1997)

Adult plants trimmed to have 3 cm of blade length and 3 cm of root length planted in common aquarium gravel and grown for several weeks in non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them maintained at a temperature of 24.5?C (high T)
 

44%

 

Idso (1997)

Adult plants trimmed to have 3 cm of blade length and 3 cm of root length planted in common aquarium gravel and grown for several weeks in non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them maintained at a temperature of 18.2?C (low T)
 

 

19%

Idso (1997)

Adult plants trimmed to have 3 cm of blade length and 3 cm of root length planted in common aquarium gravel and grown for several weeks in non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them maintained at a temperature of 24.5?C (high T)
 

 

66%

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