Product Type: Journal Article
Author(s): Reynolds, L.V. and D.J. Cooper
Reynolds, L.V. and D.J. Cooper. 2010. Environmental tolerance of an invasive riparian tree and its potential for continued spread in the southwestern US. Journal of Vegetation Science 21(4): 733-743.
This publication is distributed by John Wiley & Sons, Ltd. .
Questions: Exotic plant invasion may be aided by facilitation and broad tolerance of environmental conditions, yet these processes are poorly understood in species-rich ecosystems such as riparian zones. In the southwestern United States (US) two plant species have invaded riparian zones: tamarisk (Tamarix ramosissima, T. chinensis, and their hybrids) and Russian olive (Elaeagnus angustifolia). We addressed the following questions: (1) is Russian olive able to tolerate drier and shadier conditions than cottonwood and tamarisk? (2) Can tamarisk and cottonwood facilitate Russian olive invasion? Location: Arid riparian zones, southwestern US. Methods: We analyzed riparian tree seedling requirements in a controlled experiment, performed empirical field studies, and analyzed stable oxygen isotopes to determine the water sources used by Russian olive...