300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Native Tallgrass Prairie [Andropogon gerardii Vitman (Big Bluestem), Sorghastrum nutans (L.) Nash (Yellow Indian Grass), Poa pratensis L. (Kentucky Bluegrass), Bouteloua curtipendula (Michx.) Torr. (Sideoats Grama), Sporobolus asper var. asper (Michx.) Kunth (Meadow Dropseed)]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
3
|
|
|
| Arithmetic Mean |
62%
|
|
|
| Standard Error |
17.4%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Jastrow et al. (2000) |
open-top chambers, rhizomes
|
103%
|
|
|
|
Jastrow et al. (2000) |
open-top chambers, roots
|
31%
|
|
|
|
Jastrow et al. (2000) |
open-top chambers, total below-ground
|
52%
|
|
|