300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Azolla pinnata var. pinnata [Water Fern]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
4
|
1
|
1
|
| Arithmetic Mean |
54.3%
|
90%
|
112%
|
| Standard Error |
27%
|
0
|
0%
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Allen et al. (1988) |
outdoor tanks (570 liter)
|
70%
|
|
|
|
Idso (1997) |
Plants of known initial weight were floated for several weeks on the surface of non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them
|
57%
|
|
|
|
Idso (1997) |
Plants of known initial weight were floated for several weeks on the surface of non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them
|
|
90% |
|
|
Idso (1997) |
Plants of known initial weight were floated for several weeks on the surface of non-fertilized tap water within 10- and 29-gallon aquariums (Poor Man's Biospheres) with semi-sealed airspaces above them
|
|
|
112%
|
|
Idso et al. (1987) |
outdoor tanks (570 liter), low temperature
|
-30%
|
|
|
|
Idso et al. (1987) |
outdoor tanks (570 liter), high temperature
|
120%
|
|
|
|
Idso et al. (1989) |
outdoor tanks (570 liter), high temperature
|
|
|
|