300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Abies alba Miller [Silver Fir]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
5
|
|
|
| Arithmetic Mean |
33.2%
|
|
|
| Standard Error |
11.6%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Hattenschwiler (2001) |
open-top chambers, 3.4% of full sunlight
|
62%
|
|
|
|
Hattenschwiler and Korner (2000) |
open-top chambers, 0.8-2.1% of full sun
|
-4%
|
|
|
|
Hattenschwiler and Korner (2000) |
open-top chambers, 2.6-4.8% of full sun
|
63%
|
|
|
|
Heath et al. (2005) |
Well-watered seedlings grown for 15 months in vertical sections of 16-cm-diameter polyethylene tubes supplied with 10 liters of fertilized soil containing 2.5 g/liter of slow release Osmocote fertilizer, all located within several 4.5-m-diameter Solardomes
|
27%
|
|
|
|
Heath et al. (2005) |
Well-watered seedlings grown for 15 months in vertical sections of 16-cm-diameter polyethylene tubes supplied with 10 liters of unfertilized soil, all located within several 4.5-m-diameter Solardomes
|
18%
|
|
|