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Leaf hydraulic conductance, measured in situ, declines and recovers daily: leaf hydraulics, water potential and stomatal conductance in four temperate and three tropical tree speciesAuthor(s): Daniel M. Johnson; David R. Woodruff; Katherien A. McCulloh; Frederick C. Meinzer
Source: Tree Physiology
Publication Series: Scientific Journal (JRNL)
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DescriptionThe 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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CitationJohnson, 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.
Keywordscavitation, embolism, photosynthesis, transpiration, xylem
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