Percent Dry Weight (Biomass) Increases for 300, 600 and 900 ppm
Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
California Annual Grassland [Avena barbata Pott ex Link (Slender Oat), Bromus hordeaceus L. (Soft Brome), Hemizonia congesta DC. (Hayfield Tarweed), Lotus wrangelianus Fisch. & C.A. Mey. (Chilean Birdsfoot Trefoil), and Nassella pulchra (A.S. Hitchc.) Barkworth (Tussock Grass)]
Increases in the Air's CO2 Concentration:
For a more detailed description of this table, click here.
California Annual Grassland [Avena barbata Pott ex Link (Slender Oat), Bromus hordeaceus L. (Soft Brome), Hemizonia congesta DC. (Hayfield Tarweed), Lotus wrangelianus Fisch. & C.A. Mey. (Chilean Birdsfoot Trefoil), and Nassella pulchra (A.S. Hitchc.) Barkworth (Tussock Grass)]
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Experimental Conditions
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300 ppm
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600 ppm |
900 ppm
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|
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Hungate et al. (1997)
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open-top chambers, detrital roots,
low nutrients |
24%
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Hungate et al. (1997)
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open-top chambers, detrital roots,
high nutrients |
17%
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