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Accueil du site → Master → Etats Unis → 2003 → Fine root growth dynamics of four Mojave Desert shrubs as related to soil moisture and microhabitat patches

University of Nevada, Reno (2003)

Fine root growth dynamics of four Mojave Desert shrubs as related to soil moisture and microhabitat patches

Wilcox, Carolyn Suzanne

Titre : Fine root growth dynamics of four Mojave Desert shrubs as related to soil moisture and microhabitat patches

Auteur : Wilcox, Carolyn Suzanne

Université de soutenance : University of Nevada, Reno

Grade : Master of Science (MS) 2003

Résumé
Water is generally considered to be the major limiting factor for perennial shrub growth in the Mojave Desert, USA. However, the responses of active fine roots to soil moisture and microsite differed among Ambrosia dumosa, Ephedra nevadensis, Larrea tridentata , and Lycium pallidum , suggesting differences in root foraging strategies. Ambrosia and Ephedra had a positive linear relationship between active fine root lengths and soil moisture and more roots under the canopy, whereas Larrea had a negative linear relationship and more roots in the interspace. Lycium did not show a significant root/water relationship or significant differences between canopy and interspace microsites.

Mots clés : California, Ecology, Lycium pallidum, Larrea tridentata, Ephedra nevadensis, Ambrosia dumosa Biological sciences, Nevada, Botany

Accès au document : Proquest Dissertations & Theses

Page publiée le 3 février 2015, mise à jour le 12 septembre 2018