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Rangeland - Plant Response to Elevated CO2

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Title	Rangeland - Plant Response to Elevated CO2
Description	Study done involving plots of tallgrass prairie composed of Andorpogon gerardii, A. scoparius, Sorghastrum nutans, and Poa pratensis. The study looks at how prairie ecosystems respond to increased Carbon Dioxide levels. Also included is a bibliographic list of other papers written on research completed on the project.
Abstract	Plots of a tallgrass prairie ecosystem were exposed to ambient and twice-ambient CO[sub 2] concentrations in open-top chambers and compared to unchambered ambient CO[sub 2] plots during the entire growing season from 1989 through 1993. Dominant species were Andropogon geradii, A. scoparius, and Sorghastrum nutans (C[sub 4]) and Poa pratensis (C[sub 3]). Aboveground biomass and leaf area were estimated by periodic sampling throughout the growing season in 1989 and 1990. In 1991, 1992, and 1993, peak biomass and leaf area were estimated by an early August harvest. Compared to ambient CO[sub 2] levels, elevated CO[sub 2] increased production of C[sub 4] grass species in 1989-1991, but in 1992 and 1993, wet years, there was no difference in C[sub 4] biomass production among treatments. Biomass production of C[sub 3] grass species did not differ among treatments any year. Root ingrowth biomass was greater in 1990 and 1991 on elevated CO[sub 2] plots compared to ambient or chambered-ambient plots. In 1992 and 1993, there was no difference in root ingrowth biomass among treatments.
Subject	Plants -- Effect of carbon dioxide on -- Kansas Range plants -- Kansas Range plants -- Effect of air pollution on -- Kansas
Creator	Owensby, Clenton E. Coyne, Patrick I. Ham, Jay M. Parton, William Rice, Charles Auen, Lisa M. Adam, Neal
Publisher	Made available by: Utah State University, Merrill-Cazier Library
Language	en
Rights	This is a government document and may be used without restriction.
Date Digital	2007-11-07
Material Type	Reports Government documents Electronic books
Type	Text
Format	Text/pdf
Conversion Specifications	Pdf file uploaded from USU Government Documents Collection.
Identifier	DE96013936.pdf
Search Date	1994

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