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A History of Atmospheric CO2 and Its Effects on Plants, Animals, and EcosystemsThe Influence of Atmospheric CO2, Temperature, and Water on the Abundance of C3/C4 Taxa

A History of Atmospheric CO2 and Its Effects on Plants, Animals, and Ecosystems: The Influence of... 10. The Influence of Atmospheric CO , Temperature, and Water on the Abundance of C /C Taxa 3 4 James R. Ehleringer 10.1 Introduction C and C photosynthesis are the two most common photosynthetic pathways 3 4 contributing to global primary productivity, with Crassulacean Acid Metabolism (CAM), a third pathway found in succulents, being of limited importance to global productivity (Sage and Monson 1999; Still et al. 2003). Atmospheric CO is the carbon source for all three pathways; one key distinguishing feature among them, however, is that both C and CAM photosynthesis involve a CO - 4 2 concentrating mechanism to create high CO concentrations at the site of pho- tosynthetic carboxylation. In contrast, C photosynthesis relies solely on diffusion of CO from the outside atmosphere to the sites of photosynthetic CO 2 2 fixation (Fig. 10.1). Hence, it is clear that changes in the atmospheric CO levels will more likely influence the photosynthetic activities of C than of C and 3 4 CAM plants. In this chapter, we focus on how changes in atmospheric CO might favor plants with C versus C photosynthesis and, in particular, consider 3 4 how environmental and ecological factors will affect these C http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

A History of Atmospheric CO2 and Its Effects on Plants, Animals, and EcosystemsThe Influence of Atmospheric CO2, Temperature, and Water on the Abundance of C3/C4 Taxa

Part of the Ecological Studies Book Series (volume 177)
Editors: Baldwin, I.T.; Caldwell, M.M.; Heldmaier, G.; Jackson, Robert B.; Lange, O.L.; Mooney, H.A.; Schulze, E.-D.; Sommer, U.; Ehleringer, James R.; Denise Dearing, M.; Cerling, Thure E.

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References (50)

Publisher
Springer New York
Copyright
© Springer Science+Business Media, Inc. 2005
ISBN
978-0-387-22069-7
Pages
214 –231
DOI
10.1007/0-387-27048-5_10
Publisher site
See Chapter on Publisher Site

Abstract

10. The Influence of Atmospheric CO , Temperature, and Water on the Abundance of C /C Taxa 3 4 James R. Ehleringer 10.1 Introduction C and C photosynthesis are the two most common photosynthetic pathways 3 4 contributing to global primary productivity, with Crassulacean Acid Metabolism (CAM), a third pathway found in succulents, being of limited importance to global productivity (Sage and Monson 1999; Still et al. 2003). Atmospheric CO is the carbon source for all three pathways; one key distinguishing feature among them, however, is that both C and CAM photosynthesis involve a CO - 4 2 concentrating mechanism to create high CO concentrations at the site of pho- tosynthetic carboxylation. In contrast, C photosynthesis relies solely on diffusion of CO from the outside atmosphere to the sites of photosynthetic CO 2 2 fixation (Fig. 10.1). Hence, it is clear that changes in the atmospheric CO levels will more likely influence the photosynthetic activities of C than of C and 3 4 CAM plants. In this chapter, we focus on how changes in atmospheric CO might favor plants with C versus C photosynthesis and, in particular, consider 3 4 how environmental and ecological factors will affect these C

Published: Jan 1, 2005

Keywords: Quantum Yield; Late Miocene; Last Glacial Maximum; Glacial Period; Glacial Maximum

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