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  1. Photosynthetic acclimation of overstory Populus tremuloides and understory Acer saccharum to elevated atmospheric CO2 concentration: interactions with shade and soil nitrogen

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    Author(s): Mark E. Kubiske; Donald R. Zak; Kurt S. Pregitzer; Yu Takeuchi
    Date: 2002
    Source: Tree Physiology. 22: 321-329.
    Publication Series: Scientific Journal (JRNL)
    Station: Northern Research Station
    PDF: Download Publication  (131.43 KB)

    Description

    We exposed Populus tremuloides Michx. and Acer saccharum Marsh. to a factorial combination of ambient and elevated atmospheric CO2 concentrations ([CO2]) and high-nitrogen (N) and low-N soil treatments in open-top chambers for 3 years. Our objective was to compare photosynthetic acclimation to elevated [CO2] between species of contrasting shade tolerance, and to determine if soil N or shading modify the acclimation response. Sun and shade leaf responses to elevated [CO2] and soil N were compared between upper and lower canopy leaves of P. tremuloides and between A. saccharum seedlings grown with and without shading by .

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    Citation

    Kubiske, Mark E.; Zak, Donald R.; Pregitzer, Kurt S.; Takeuchi, Yu. 2002. Photosynthetic acclimation of overstory Populus tremuloides and understory Acer saccharum to elevated atmospheric CO2 concentration: interactions with shade and soil nitrogen. Tree Physiology. 22: 321-329.

    Keywords

    A/Ci analysis, global change, leaf nitrogen, sugar maple, trembling aspen

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