Abstract
A boundary line analysis of the scatterplot relating pre-dawn leaf water potential to pre-dawn minus minimum leaf water potential was applied to study the efficiency of the Mediterranean evergreen oak species to buffer the effects of variability in water resources. The results are discussed in term of stomatal regulation and changes in soil-to-leaf hydraulic conductance of water flow, both induced by changes in leaf water potential. For this purpose, we used data for leaf water potential measured in three stands of Quercus ilex across a soil water availability gradient in Southern France, and two others obtained in California and Arizona for Quercus turbinella and Portugal for Quercus coccifera. A classification of plant responses from mesic to xeric sites is proposed.
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Rambal, S. (1992). Quercus ilex facing water stress: a functional equilibrium hypothesis. In: Romane, F., Terradas, J. (eds) Quercus ilex L. ecosystems: function, dynamics and management. Advances in vegetation science, vol 13. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2836-2_15
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DOI: https://doi.org/10.1007/978-94-017-2836-2_15
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