300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
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Grassland Community [Avena fatua L. (Wild Oat), Bromus hordeaceus L. (Soft Brome), Lasthenia californica DC. ex Lindl. (California Goldfields), Lolium multiflorum (Lam.) Husnot (Italian Ryegrass), Plantago erecta Morris (Dwarf Plantain), Vulpia microstachys (Nutt.) Munro (Small Fescue)]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
2
|
|
|
| Arithmetic Mean |
19%
|
|
|
| Standard Error |
2.8%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Jackson and Reynolds (1996) |
open-top chambers, roots, -NPK
|
15%
|
|
|
|
Jackson and Reynolds (1996) |
open-top chambers, roots, +NPK
|
23%
|
|
|