Climate Gradients Underlie Geographical Variations in iWUE and δ 15N Values of Encelia

• Published in: Plant-environment interactions (Hoboken, N.J. : 2018) Vol. 6; no. 4
• Main Authors: Lengyel, Tegan E., Karavan‐Jahromi, Iman, Driscoll, Avery W., Ehleringer, James R.
• Format: Journal Article
• Language: English
• Published: Hoboken John Wiley and Sons Inc 28.08.2025

This study assessed variations in leaf intrinsic water use efficiency (iWUE) and δ 15 N values among Encelia , a genus of drought‐deciduous shrubs distributed across arid regions of southwestern North America between 1972 and 1980 when climates were cooler than today. We hypothesized that geographic...