Long-term effects of elevated carbon dioxide on sour orange tree specific gravity and anatomy

Michael C. Wiemann; David E. Kretschmann; Alan W. Rudie; Bruce A. Kimball; Sherwood B. Idso

doi:10.2737/FPL-RP-648

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Long-term effects of elevated carbon dioxide on sour orange tree specific gravity and anatomy

Informally Refereed

Authors:

Michael C. Wiemann, David E. Kretschmann, Alan W. Rudie, Bruce A. Kimball, Sherwood B. Idso

Year:

2008

Type:

Research Paper

Station:

Forest Products Laboratory

DOI:

https://doi.org/10.2737/FPL-RP-648

Source:

Research Paper FPL-RP-648. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 7 p.

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Download (PDF 739 KB): https://research.fs.usda.gov/download/treesearch/30937.pdf

Abstract

Exposure to elevated levels of atmospheric CO₂ for a period of 17 years resulted in small but statistically significant decreases in wood basic specific gravity and number of rays per millimeter. Other anatomical characteristics (percentages of tissues, number of vessels per square millimeter, vessel diameters, and fiber wall thickness) were unaffected by treatment. Differences due to distance from pith were important, but cardinal direction (north, south, east, west) was not.

Keywords

carbon dioxide, specific gravity, wood anatomy, vessels, rays, axial parenchyma, fibers

Citation

Wiemann, Michael C.; Kretschmann, David; Rudie, Alan; Kimball, Bruce A.; Idso, Sherwood B. 2008. Long-term effects of elevated carbon dioxide on sour orange tree specific gravity and anatomy. Research Paper FPL-RP-648. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory. 7 p.