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FY2017The Integrated Rangeland Fire Management Strategy Actionable Science Plan places a high priority on assessing control measures for invasive annual grasses, which provide fuel for rangeland fire and impede restoration of desirable perennials. Weed-suppressive strains of the bacterium Psuedomonas fluoresens (P.f.) are an emerging but yet untested tool for selectively reducing these annual grasses. P.f. may suppress annuals for approximately 2-5 years, bridging the short-term action of herbicides and long-term resistance provided as native bunchgrasses recover. In 2015-2016, the USGS responded to a request from the Idaho sage grouse action group to establish a series of field-based experiments to assess the efficacy...
This presentation is part of the Decision Support Tools for Natural Resource Managers in Sagebrush Communities and Across the Pacific Northwest Workshop Series, funded by the Great Basin Landscape Conservation Cooperative (LCC). Mike Gough with Conservation Biology Institute provides a rapid overview of the Sagebrush Climate Console. He demonstrates the new Nature’s Stage Climate Mapper. The objective of this session to show participants possible applications they can use in management decision-making.
Wind erosion and aeolian transport processes are under studied compared to rainfall-induced erosion and sediment transport on burned landscapes. Post-fire wind erosion studies have predominantly focused on near-surface sediment transport and associated impacts such as on-site soil loss and site fertility. Downwind impacts, including air quality degradation and deposition of dust or contaminants, are also likely post-fire effects; however, quantitative field measurements of post-fire dust emissions are needed for assessment of these downwind risks. A wind erosion monitoring system was installed immediately following a desert sagebrush and grass wildfire in southeastern Idaho, USA to measure wind erosion from the burned...
There is increasing interest in climate change adaptation, yet many fish and wildlife field staff remain uncertain how to put adaptation into practice. Our goal with this project is to bridge the gap between high-level climate adaptation guidance and the field staff who carry out a specific regulatory process, Habitat Conservation Planning under Section 10 of the Endangered Species Act. Following best practices from the literature on linking science and management, we began with a focus on what people do and are bringing climate considerations into that practice. Phase I of the process involved exploring HCP practices in USFWS Region 8 (primarily CA and NV) and writing a Quick Guide for Climate Smart HCPs; a series...
This Report provides a strategic approach for conservation of sagebrush ecosystems and Greater Sage- Grouse (sage-grouse) that focuses specifically on habitat threats caused by invasive annual grasses and altered fire regimes. It uses information on factors that influence (1) sagebrush ecosystem resilience to disturbance and resistance to invasive annual grasses and (2) distribution, relative abundance, and persistence of sage-grouse populations to develop management strategies at both landscape and site scales. A sage-grouse habitat matrix links relative resilience and resistance of sagebrush ecosystems with sage-grouse habitat requirements for landscape cover of sagebrush to help decision makers assess risks and...
Precipitation amount and seasonal timing determine the duration and distribution of water available for plant and microbial activity in the cold desert sagebrush steppe. In this study, we sought to determine if a sustained shift in the amount and timing of precipitation would affect soil microbial diversity, community composition, and soil carbon (C) storage. Field plots were irrigated (+200 mm) during the dormant or growing-season for 17 years. Microbial community responses were assessed over the course of a year at two depths (15–20 cm, 95–100 cm) by terminal restriction fragment length polymorphism (T-RFLP), along with co-occurring changes in plant cover and edaphic properties. Bacterial richness, Shannon Weaver...
On December 5, 2016, Marjorie Matocq, University of Nevada Reno, and John Kasbohm, Greater Sheldon-Hart Mountain National Wildlife Refuge, discussed functional continuity of habitat for the pygmy rabbit.Pygmy rabbits (Brachylagus idahoensis) are habitat specialists of sagebrush communities throughout the Great Basin. Overgrazing, altered fire regimes, invasive plants and energy development are expected to impact natural patterns of dispersal and gene flow among wildlife populations in sagebrush ecosystems, including pygmy rabbits. In turn, these impacts may reduce the adaptive potential and persistence of local populations. This study seeks to identify the spatial distribution of genetic variation in pygmy rabbits....
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FY2014Avoiding cheatgrass dominance following tree-reduction treatments on woodland-encroached sagebrush communities is a priority for managers in the Great Basin. Perennial herbaceous and weedy annual cover have been related to site resilience after treatment and associated with soil climate regimes and site physical characteristics. Additional investigation of site characteristics associated with vegetation response will allow us to better decide which sites to treat and whether seeding is needed or not in conjunction with tree reduction treatments. Site-level planning also requires an understanding of how climate change may influence vegetation response to treatments. We propose to associate site-measured soil...
map background search result map search result map Using Soil Climate and Geospatial Environmental Characteristics to Determine Plant Community Resilience to Fire and Fire Surrogate Treatments Evaluation of Weed-Suppressive Bacteria for Control of Exotic Annual Grasses Evaluation of Weed-Suppressive Bacteria for Control of Exotic Annual Grasses Using Soil Climate and Geospatial Environmental Characteristics to Determine Plant Community Resilience to Fire and Fire Surrogate Treatments