300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Metasequoia glyptostroboides Hu & Cheng [Dawn Redwood]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
86.3%
|
|
|
| Standard Error |
42.8%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Llorens et al. (2009) |
Photosynthesis of well watered and fertilized one-year-old saplings grown from seed and maintained for four more years in 6-liter pots (filled with a 13:5:2 mix of sand:vermiculite:peat) within controlled-environment growth rooms, with measurements made in the fourth year of the study (middle of first-half growing season)
|
188%
|
|
|
|
Llorens et al. (2009) |
Photosynthesis of well watered and fertilized one-year-old saplings grown from seed and maintained for four more years in 6-liter pots (filled with a 13:5:2 mix of sand:vermiculite:peat) within controlled-environment growth rooms, with measurements made in the fourth year of the study (end of growing season)
|
58%
|
|
|
|
Royer et al. (2003) |
Controlled environment chambers,simulated ancient polar environment
|
13%
|
|
|