Skip to Main Content
Dynamic variation in sapwood specific conductivity in six woody species.Author(s): J.C. Domec; F.C. Meinzer; B.L. Gartner; J. Housset
Source: Tree Physiology. 27: 1389-1400
Publication Series: Scientific Journal (JRNL)
PDF: Download Publication (1.61 MB)
DescriptionRelationships between pressure gradients and flow rates in the xylem are incompletely understood because steady-state conductivity coefficients are inadequate for predicting and interpreting flow under the non-steady-state conditions more prevalent in intact trees. The goal of this study was to determine the magnitude of deviation of trunk sapwood specific conductivity (ks) from that predicted by Darcy's law when ks is measured under steady-state vs. non-steady-state conditions. The results represent very significant deviations from flow rates predicted by Darcy's law, and suggest that if these non-linearities of pressure-flux relationships are not taken into account, large errors in model predictions of sap flux, and ultimately tree productivity, will result.
- Visit PNW's Publication Request Page to request a hard copy of this publication.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationDomec, J.C.; Meinzer, F.C.; Gartner, B.L.; Housset, J. 2007. Dynamic variation in sapwood specific conductivity in six woody species. Tree Physiology. 27: 1389-1400
KeywordsDarcy's law, hydraulic architecture, tracheids, vessels, xylem
- Dynamic variation in sapwood specific conductivity in six woody species
- Effects of stream discharge, alluvial depth and bar amplitude on hyporheic flow in pool-riffle channels
- Genetic effects on transpiration, canopy conductance, stomatal sensitivity to vapour pressure deficit, and cavitation resistance in loblolly pine
XML: View XML