Research and Publications
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Findings of this study supports other studies reporting negative impacts of oil and gas development on sage-grouse populations and our modeling approach allowed us to make inference to a longer time scale and larger spatial extent than in previous studies. In addition to sage-grouse, development may also negatively affect other sagebrush-obligate species, and active management of sagebrush habitats may be necessary to maintain some species.
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This study found two levels of hierarchical genetic subpopulation structure. These subpopulations occupy significantly different elevations and are surrounded by divergent vegetative communities with different dominant subspecies of sagebrush, each with its own chemical defense against herbivory. We propose five management groups reflective of genetic subpopulation structure. These genetic groups are largely synonymous with existing priority areas for conservation. On average, 85.8 % of individuals within each conservation priority area assign to a distinct subpopulation. Our results largely support existing management decisions regarding subpopulation boundaries.
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This technical manual provides regional accounts of historical and current uses of fire, and then discusses fire effects on wildlife and the challenges of using prescribed fire in each system.
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The Joint Fire Science Program (JFSP) digest gives background on Secretarial Order 3336, describes the role of JFSP research, collaborators and partnerships, and the the Great Basin Fire Science Exchange.
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This 2016 report highlights selected recent accomplishments of federal agencies and partners in conserving the sagebrush ecosystem and the more than 350 species, including the Greater sage-grouse, as well as the human traditions and livelihoods that depend on it.
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The Integrated Rangeland Fire Management Strategy outlined the need for coordinated, science-based adaptive management to achieve long-term protection, conservation, and restoration of the sagebrush (Artemisia spp.) ecosystem. A key component of this management approach is the identification of knowledge gaps that limit implementation of effective strategies to meet current management challenges. The tasks and actions identified in the Strategy address several broad topics related to management of the sagebrush ecosystem. This science plan is organized around these topics and specifically focuses on fire, invasive plant species and their effects on altering fire regimes, restoration, sagebrush and greater sage-grouse (Centrocercus urophasianus), and climate and weather.
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This paper reports that community results from burn treatments can mean an increase in patchy spatial distribution of ectomycorrhiza (EMF). Quick initiation of EMF recolonization is possible depending on the size of high intensity burn patches, proximity of low and unburned soil, and survival of nearby hosts. The importance of incorporating mixed fire effects in fuel management practices will help to provide EMF refugia for ponderosa pine forest regeneration.
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This research suggests that widespread environmental change within sagebrush ecosystems, especially the fire-cheatgrass cycle (e.g., invasion of cheatgrass and increased fire frequency) and human land disturbances, are directly and indirectly influencing ground squirrels and badgers.
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The paper concludes that though wildfire and invasion by exotic annual grasses may negatively affect other species, harvester ants may indeed be one of the few winners among a myriad of losers linked to vegetation state changes within sagebrush ecosystems.
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This study found that soil disturbance and plant community disturbance interact to promote the initial invasion of Bromus tectorum in Intermountain West valley ecosystems.