300, 600 and 900 ppm Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
Irish Neutral Grassland Community [Agrostis capillaris L. (Colonial Bentgrass), Cynosurus cristatus L. (Crested Dogstailgrass), Holcus lanatus L. (Common Velvetgrass), Lolium perenne L. (Perennial Ryegrass)]
|
300 ppm
|
600 ppm
|
900 ppm
|
|
| Number of Results |
4
|
|
|
| Arithmetic Mean |
28.5%
|
|
|
| Standard Error |
6.8%
|
|
|
|
Experimental Conditions
|
300 ppm
|
600 ppm
|
900 ppm
|
|
|
Jongen and Jones (1998) |
open-top chambers, July
|
19%
|
|
|
|
Jongen and Jones (1998) |
open-top chambers, August
|
14%
|
|
|
|
Jongen and Jones (1998) |
open-top chambers, September
|
32%
|
|
|
|
Jongen and Jones (1998) |
open-top chambers, February
|
49%
|
|
|