Synthesis / Tech Report
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This study was designed to improve the understanding of both individual and community actions that homeowners currently do or might take to protect their home or property, and the barriers that impede homeowners from completing firewise treatments to their home or property.
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This review summarizes fire use in the forests and woodlands of North America and the current state of the practice, and explores challenges associated with the use of prescribed fire. Although new scientific knowledge has reduced barriers to prescribed burning, societal aversion to risk often trumps known, long-term ecological benefits. Broader implementation of prescribed burning and strategic management of wildfires in fire-dependent ecosystems will require improved integration of science, policy, and management, and greater societal acceptance through education and public involvement in land-management issues.
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The key findings of this synthesis are organized along nine topical areas: types of crown fires; crown fire initiation; crown fire propagation; crown fire rate of spread; crown fire intensity and flame zone characteristics; crown fire area and perimeter growth; crown fire spotting activity; models, systems, and other decision aids for predicting crown fire behavior; and implications for fire and fuel management.
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In this literature synthesis and meta-analysis, researchers found that the overall mean effect of fuel treatments on fire responses is large and significant, equating to a reduction in canopy volume scorch from 100% in an untreated stand to 40% in a treated stand, a reduction in scorch height from 30.5 m to 16.1 m, or an inferred reduction in flame length from 3.4 m to 2.1 m. But our synthesis demonstrates that fuel treatments vary widely in effectiveness, which is largely explained by vegetation and treatment type.
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This special report from the Ecological Restoration Institute at Northern Arizona University was presented to the U.S. Department of Interior, Office of Wildland Fire. The goal of this synthesis was to find, analyze and synthesize the best available evidence that policy makers need to make decisions about how to spend the limited money available to address the nation’s growing fire problem.
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This Research Strategy provides an outline of important research topics to ensure that science information gaps are identified and documented in a comprehensive manner. Further, by identifying priority topics and critical information needed for planning, research, and resource management, it provides a structure to help coordinate members of an expansive research and management community in their efforts to conduct priority research.
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This report found that big sagebrush recovery following fire over a broad regional scale suggests an average recovery time of 25 to 35+ years. However, there was much variation in recovery rate associated with the timing of precipitation relative to the particular fire event. We found that precipitation in the pre-fire growing season was positively related to post-fire recovery of mountain big sagebrush, and that precipitation in the late winter following fire was similarly positively related to recovery rate.
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In this review of recent literature and meta-analysis of seeding after wildfires, the authors found that seeding has little effect on erosion during the first year after fire and is highly dependent upon initial establishment and coverage of species in successive years. Older seedings were more likely to show reductions in invasives than younger seedings. Seedings with high plant establishment were more likely to reduce invasives than those with low establishment.
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This guide provides a set of tools that will help field biologists, land managers, and private landowners conduct rapid qualitative field assessments that address the kind of site and its current state. These tools include a list of questions to be addressed and a series of photographs, keys, tables, and figures to help evaluate a site. Conducting this assessment will help prioritize sites to be treated, select the best treatment, and predict outcomes.
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This guide describes the benefits, opportunities, and trade-offs concerning fuel treatments in the dry mixed conifer forests of northern California and the Klamath Mountains, Pacific Northwest Interior, northern and central Rocky Mountains, and Utah. It provides (1) exhaustive summaries and links to supporting guides and literature on the mechanics of fuel treatments, including mechanical manipulation, prescribed fire, targeted grazing and chemical use; (2) a decision tree to help managers select the best mechanical method for any situation in these regions; (3) discussion on how to apply prescribed fire to achieve diverse and specific objectives; (4) key principles for developing an effective monitoring plan; (5) economic analysis of mechanical fuel treatments in each region; and (6) discussion on fuel treatment longevity.