Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2003 → NATIVE PLANT RECRUITMENT AND POPULATION STRUCTURE AS INFLUENCED BY WEEDY INVASIONS IN TEMPERATE ARID RANGELANDS

United States Department of Agriculture (USDA) 2003

NATIVE PLANT RECRUITMENT AND POPULATION STRUCTURE AS INFLUENCED BY WEEDY INVASIONS IN TEMPERATE ARID RANGELANDS

Native Plant Weedy Invasions

United States Department of Agriculture (USDA) Research, Education & Economics Information System (REEIS)

Titre : NATIVE PLANT RECRUITMENT AND POPULATION STRUCTURE AS INFLUENCED BY WEEDY INVASIONS IN TEMPERATE ARID RANGELANDS

Identification : WYO-384-03

Pays : Etats Unis

Durée : Dec 1, 2003 à Nov 30, 2008

Domaine : Plant Genetic Resources ; Weeds Affecting Plants ; Rangelands and grasslands, general

Partenaire : UNIVERSITY OF WYOMING 1000 E UNIVERSITY AVE DEPARTMENT 3434 LARAMIE,WY 82071-2000

Objectifs
This study will assess native plant stand composition, recruitment and establishment relative to invasive species common to temperate arid rangelands in western North America. We will evaluate a series of native species and their response to invasion relative to weed density, soil cover, microsites and variability in climatic conditions.

Descriptif
Using field studies in the Intermountain West combined with greenhouse examination of germination and establishment we will document native shrub, forb and grass species response to invasion to determine thresholds of weed impact on population structure. We will initiate studies with Bromus tectorum (invader) and Ceratoides lanata (native shrub) and expand our model to other native forb and graminoid species.

Présentation : USDA

Page publiée le 16 décembre 2015, mise à jour le 31 octobre 2017