The use of essential oils as chemotaxonomic markers could be useful for the classification of Artemisia species and to caracterize biodiversity in the different populations. An analysis of the chemical composition of four essential oils from Italian populations of Artemisia alba Turra (collected in Sicily, Marche and Abruzzo) was investigated. In this paper an in depth study of the significant ...

Abstract Interannual variation, especially weather, is an often‐cited reason for restoration “failures”; yet its importance difficult to experimentally isolate across broad spatiotemporal extents, due correlations between weather and site characteristics. We examined post‐fire treatments within sagebrush‐steppe ecosystems ask: (1) Is following seeding efforts a primary why outcomes depart from ...

Principal Investigators Jeanne C. Chambers, E. Durant McArthur, Steven B. Monson, Susan E. Meyer, Nancy L. Shaw, and Robin J. Tausch – USDA Forest Service, Rocky Mountain Research Station Robert R. Blank – USDA Agricultural Research Station Steve Bunting – University of Idaho Richard R. Miller – Oregon State University Mike Pellant – USDI Bureau of Land Management Bruce A. Roundy – Brigham Youn...

The combined impacts of woody plant encroachment and climate variability have the potential to alter water balance in many sagebrush steppe ecosystems Western USA, leading reduced availability these already water-scarce regions. This study compared water-balance characteristics two adjacent semiarid watersheds central Oregon, USA: one dominated by big western juniper. Precipitation, springflow,...

First posted February 14, 2023 For additional information, contact: Director, Colorado Water Science CenterU.S. Geological SurveyBox 25046, Mail Stop 415Denver, CO 80225(303) 236-4882 Loss and degradation of sagebrush rangelands due to an accelerated invasive annual grass-wildfire cycle other stressors are significant management, conservation, economic issues in the western United States. These...