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Publication Information

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Title: Adjustments in hydraulic architecture of Pinus palustris maintain similar stomatal conductance in xerix and mesic habitats

Author: Addington, 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.;

Date: 2006

Source: Plant. Cell and Environment, Vol. 29: 535-545

Publication Series: Miscellaneous Publication

Description: We 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.

Keywords: habitat structure, hydraulic conductance, leaf water potential, longleaf pine, density, tree height, water relations

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Addington, 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

 


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