Water relations of crok-oak (Quercus suber L.) under natural conditions

✍ Scribed by Oliveira, G. ;Correia, O. A. ;Martins-Lou��o, M. A. ;Catarino, F. M.

• Publisher: Springer-Verlag
• Year: 1992
• Tongue: English
• Weight: 555 KB
• Volume: 99-100
• Category: Article
• ISSN: 1573-5052
• DOI: 10.1007/bf00118226

✦ Synopsis

Daily and annual courses of leaf transpiration, stomatal conductance and shoot water potential of four Quercus suber individuals were compared in a semi-natural stand in southwest Portugal, from spring 1989 to early summer 1990.

The trees investigated showed annual patterns typical of evergreen sclerophyllous species but varied in their range of stomatal operation. This appeared to be related to differences in hydraulic conductivity in the root-to-leaf pathway.

Maximum stomatal conductance and transpiration rates occurred from March to June.