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    Author(s): Jack A. Chapman; John S. King; Kurt S. Pregitzer; Donald R. Zak
    Date: 2005
    Source: Tree Physiology. 25: 1501-1510.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (177.39 KB)

    Description

    Rising atmospheric carbon dioxide (CO2) concentration ([CO2]) could alter terrestrial carbon (C) cycling by affecting plant growth, litter chemistry and decomposition. How the concurrent increase in tropospheric ozone (O3) concentration ([O3]) will interact with rising atmospheric [CO2] to affect C cycling is unknown.Amajor component of carbon cycling in forests is fine root production, mortality and decomposition. To better understand the effects of elevated [CO2] and [O3] on the dynamics of fine root C, we conducted a combined field and laboratory incubation experiment to monitor decomposition dynamics and changes in fine root litter chemistry.

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    Citation

    Chapman, Jack A.; King, John S.; Pregitzer, Kurt S.; Zak, Donald R. 2005. Effects of elevated concentrations of atmospheric CO2 and tropospheric O3 on decomposition of fine roots.

    Keywords

    carbon cycle, chemistry, dissolved organic carbon, FACE, field incubation, laboratory incubation, mass loss, microbial respiration

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