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Accueil du site → Projets de développement → Projets de recherche pour le Développement → 2020 → ISLANDS OF OPPORTUNITY : TARGETED RESTORATION OF DEGRADED COLORADO SALT DESERT RANGELANDS WITHIN REMNANT AND RESTORED SHRUB ISLANDS

United States Department of Agriculture (USDA) 2020

ISLANDS OF OPPORTUNITY : TARGETED RESTORATION OF DEGRADED COLORADO SALT DESERT RANGELANDS WITHIN REMNANT AND RESTORED SHRUB ISLANDS

Restoration Salt Desert Rangelands Shrubs

United States Department of Agriculture (USDA) National Institute of Food and Agriculture

Titre : ISLANDS OF OPPORTUNITY : TARGETED RESTORATION OF DEGRADED COLORADO SALT DESERT RANGELANDS WITHIN REMNANT AND RESTORED SHRUB ISLANDS

Identification : 1022680

Pays : Etats Unis

Durée : START : 01 JUL 2020 TERM : 30 JUN 2023

Résumé
Salt desert and sagebrush ecosystems together are the largest rangeland type in the western U.S. Historic and current uses of these ecosystems include livestock grazing, energy/mineral development, and recreational use. These usescan, and have led to loss of ecosystem function, wildlife habitat, and long-term sustainability. These sensitive arid ecosystems have proven to be extremely difficult to restore once degraded.The goal of our project is to explore a newapproach for the restoration of these important ecosystems. Our approach will focus on small areas of surviving shrubs (referred to as "shrub islands") in these ecosystems. Previous restoration work in these ecosystems has focused onareas between these shrub islands that are often invaded by non-native plants. Shrun islands are often viewed by land managers as remnants of native species to be left alone during spraying and reseeding operations. However, our recent studies have found that beneath these shrub islands, there is often a lack of native pants that we would expect to find there. Our proposed restoration approach will be to focus on the understory of these shrub islands where we hope to establish a rich understory of native plants to benefit native wildlife and domestic livestock. If successful, these restored shrub islands could serve as a seed source for surrounding rangeland vegetation so that when non-native vegetation is controlled, the shrub islands can expand and improve native biodiversity in the surrounding ecosystem.

Objectifs
The overall objective of our research program is to develop improved methods for the restoration of native plant diversity in degraded salt desert rangelands in western Colorado. Specifically, we aim to address the following management questions:Can seeding native herbaceous species under shrub canopies facilitate establishment of some or all seeded species in degraded salt desert rangelands ?Is the strategy of seeding native herbaceous species under shrub canopies more effective in sagebrush or salt desert rangelands ?

Performing Institution : COLORADO STATE UNIVERSITY
Investigator : Paschke, MA, W. ; Jonas-Bratten, JA, .

Présentation : USDA (NIFA)

Page publiée le 28 novembre 2021