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Adjustments in hydraulic architecture of Pinus palustris maintain similar stomatal conductance in xerix and mesic habitatsAuthor(s): R.N. Addington; L.A. Donovan; R.J. Mitchell; J.M. Vose; S.D. Pecot; S.B. Jack; U.G. Hacke; J.S. Sperry; R. Oren
Source: Plant. Cell and Environment, Vol. 29: 535-545
Publication Series: Miscellaneous Publication
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DescriptionWe investigated relationships between whole-tree hydranlic architecture and stomatal conductance in Pinus palustris Mill. (longleaf pine) across habitats that differed in soil properties and habitat structure. Trees occupying a xeric habitat (characterized by sandy, well-drained soils, higher nitrogen availability and lower overstory tree density) were shorter in stature and had lower sapwood-to-leaf area ration (AsAL) then trees in a mesic habitat. The soil-leaf water gradient (Ts - TL) and leaf-specific hydraulic conductance (KL) were similar between sites, as was tissue specific hydraulic conductivity (Ks) of roots.
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CitationAddington, R.N.; Donovan, L.A.; Mitchell, R.J.; Vose, J.M.; Pecot, S.D.; Jack, S.B.; Hacke, U.G.; Sperry, J.S.; Oren, R. 2006. Adjustments in hydraulic architecture of Pinus palustris maintain similar stomatal conductance in xerix and mesic habitats. Plant. Cell and Environment, Vol. 29: 535-545
Keywordshabitat structure, hydraulic conductance, leaf water potential, longleaf pine, density, tree height, water relations
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