Transpiration by dryland oaks: studies in the south-western United States and Northern Israel

• Published in: Journal of arid environments Vol. 55; no. 4; pp. 595 - 605
• Main Authors: Ffolliott, Peter F., Gottfried, Gerald J., Cohen, Yehezkel, Schiller, Gabriel
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.12.2003; Elsevier
• Subjects: Animal and plant ecology; Animal, plant and microbial ecology; Biological and medical sciences; Dryland oaks; Fundamental and applied biological sciences. Psychology; Heat pulse velocity method; Quercus; Sap flow; Synecology; Terrestrial ecosystems; Transpiration; Water use; Israel; Asia; United States; North America; Mediterranean Basin; America; USA; Water use; Transpiration; Dryland oaks; Sap flow; Quercus; Heat pulse velocity method; Community structure; Forest stand; Annual variation; Quercus ilex; Diurnal variation; Fagaceae; Quercus emoryi; Evergreen plant; Deciduous plant; Dicotyledones; Angiospermae; Hardwood forest tree; Spermatophyta
• ISSN: 0140-1963; 1095-922X
• DOI: 10.1016/S0140-1963(02)00290-2

Increased understanding of transpiration by dryland oaks in the woodlands of the south-western United States and northern Israel has been obtained from studies in the two countries. Transpiration was estimated in both studies by the heat pulse velocity (HPV) method in stands of Quercus emoryi, a drought-deciduous species growing in the south-western United States, and stands supporting Q. ithaburensis, a deciduous oak, and Q. calliprinos, an evergreen oak, in northern Israel. Estimates of daily transpiration rates by individual trees and annual transpiration amounts on a stand basis indicate that depending on the species and stand structure, 45–80% of the precipitation inputs to the stands sampled are represented by transpiration component of the respective hydrologic cycles.