Biologia Plantarum

, Volume 54, Issue 2, pp 366–368 | Cite as

Tree water dynamics non-destructively assessed through sap flow measurements and potential evapotranspiration

  • R. BequetEmail author
  • J. Čermák
  • N. Nadezhdina
  • C. De Canniere
  • R. Ceulemans
Brief Communication


Sap flow and potential evapotranspiration rates were analyzed for two coniferous tree species (Douglas-fir and Scots pine) and one broadleaf species (sessile oak) in a mixed Carpineto-Quercetum forest during the growing season 2005. The relationship between sap flow and potential evapotranspiration rates, effective crown area as a measure of the relative transpiration and daily relative proportion of the storage water used for transpiration were used as indicators of the tree water dynamics. These indicators were determined on four consecutive days and all three showed good reliability concerning tree water dynamics.

Additional key words

Quercus petraea Pinus sylvestris Pseudotsuga menziesii transpiration rate water balance water deficit 



effective crown area


day of year


potential evapotranspiration


PET extrapolated at tree level


tree sap flow rate


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The authors thank V. Nadezhdin for technical assistance. Funding was provided by the Bilateral Exchange Programme of the Flemish Community and the Czech Republic (Contract No. BWS-BOF-2004), by the Project of the Ministry of Education, Youth and Sports of the Czech Republic (MSM 6215648902) and by Project NAZV QG 60063 on “Douglas-fir the most important introduced species in sustainable forestry”.


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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • R. Bequet
    • 1
    Email author
  • J. Čermák
    • 2
  • N. Nadezhdina
    • 2
  • C. De Canniere
    • 3
  • R. Ceulemans
    • 1
  1. 1.Department of BiologyUniversity of AntwerpWilrijkBelgium
  2. 2.Mendel University of Agriculture and ForestryBrnoCzech Republic
  3. 3.Ecole Interfacultaire de BioingénieursUniversité Libre de BruxellesBruxellesBelgium

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