Vulnerability to xylem cavitation and the distribution of Sonoran Desert vegetation

We studied 15 riparian and upland Sonoran desert species to evaluate how the limitation of xylem pressure (Ψx) by cavitation corresponded with plant distribution along a moisture gradient. Riparian species were obligate riparian trees (Fraxinus velutina, Populus fremontii, and Salix gooddingii), nat...

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Veröffentlicht in:	American journal of botany 2000-09, Vol.87 (9), p.1287-1299
Hauptverfasser:	Pockman, William T., Sperry, John S.
Format:	Artikel
Sprache:	eng
Schlagworte:	Air pressure Botany Cavitation flow comparative approach Deserts Drought Ecology Embolisms Flowers & plants Highlands Hydraulics Plants Safety factors Sonoran desert vegetation species distribution Transpiration USA, Arizona water relations Xylem xylem cavitation xylem conducting efficiency
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