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    Author(s): Daniel M. Johnson; David R. Woodruff; Katherien A. McCulloh; Frederick C. Meinzer
    Date: 2009
    Source: Tree Physiology
    Publication Series: Scientific Journal (JRNL)
    PDF: View PDF  (2.18 MB)

    Description

    The objectives of this study were to measure Kleaf, using a rehydration kinetics method, (1) in the laboratory (under controlled conditions) across a range of water potentials to construct vulnerability curves (VC) and (2) over the course of the day in the field along with leaf water potential and stomatal conductance. The results presented here, from the previous work of the authors and from other published studies, were consistent with two different strategies regarding daily maintenance of Kleaf: (1) substantial loss and subsequent recovery or (2) a more conservative strategy of loss avoidance.

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    Citation

    Johnson, Daniel M.; Woodruff, David R.; McCulloh, Katherien A.; Meinzer, Frederick C. 2009. Leaf hydraulic conductance, measured in situ, declines and recovers daily: leaf hydraulics, water potential and stomatal conductance in four temperate and three tropical tree species. Tree Physiology. 29: 879-887.

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    Keywords

    cavitation, embolism, photosynthesis, transpiration, xylem

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