Rangeland Plant response to elevated CO{sub 2}

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Description

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 ... continued below

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8 p.

Creation Information

Owensby, C.E.; Coyne, P.I.; Ham, J.M.; Parton, W.; Rice, C.; Auen, L.M. et al. December 31, 1994.

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Description

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.

Physical Description

8 p.

Notes

OSTI as DE96013936

Medium: P; Size: 8 p.

Source

  • Other Information: PBD: 1994

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  • Other: DE96013936
  • Report No.: DOE/ER/60253--T10
  • Grant Number: FG02-84ER60253
  • DOI: 10.2172/373752 | External Link
  • Office of Scientific & Technical Information Report Number: 373752
  • Archival Resource Key: ark:/67531/metadc679215

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • December 31, 1994

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • April 13, 2017, 2:05 p.m.

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Owensby, C.E.; Coyne, P.I.; Ham, J.M.; Parton, W.; Rice, C.; Auen, L.M. et al. Rangeland Plant response to elevated CO{sub 2}, report, December 31, 1994; United States. (digital.library.unt.edu/ark:/67531/metadc679215/: accessed November 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.