Wildland Firefighter Exposure to Hydrocarbons: Research Brief

Wildland Firefighter Exposure to Hydrocarbons: Research Brief

Wildland firefighters suppressing wildland fires or conducting prescribed fires work long shifts and are exposed to high levels of smoke with no respiratory protection. This research measures firefighter exposure to smoke and pollutants and offers way to reduce this exposure.

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Parsing Ecosystem Responses: Divergent Fire-Climate Patterns for California Landscapes: Research Brief

Parsing Ecosystem Responses: Divergent Fire-Climate Patterns for California Landscapes: Research Brief

In an era of concern over climate change, it's important to understand how different kinds of fire-adapted of ecosystems in California may respond to climate change in relation to fire. This study categorized Californian ecosystems into three types and discusses how each may be affected by climate change and fire.

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Relative Importance of Building Materials on Structure Survival in San Diego County WUI Wildfires: Research Brief

 Relative Importance of Building Materials on Structure Survival in San Diego County WUI Wildfires: Research Brief

The design and materials used in construction is critical to preventing structure loss during wildland urban interface (WUI) fires. This research helps planners and homeowners by ranking specific construction materials by fire safety effectiveness, then comparing their use to landscape-scale design attributes.

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Pyrodiversity Promotes Avian Diversity in Semi-Arid Forests: Research Brief

Pyrodiversity Promotes Avian Diversity in Semi-Arid Forests: Research Brief

Overall, the results of this study add support to the existing theory that diverse fire increases biodiversity in certain ecosystems. Specifically, this study showed that higher diversity of fire severity patterns within a fire lead to more bird diversity, especially in the fire prone semi-arid forests of the Sierra Nevada.

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Photo: Nine years after the Moonlight fire in Plumas county, California, the landscape shows remarkable resilience with a diversity of habitat structure and birds. Photo courtesy Morgan Tingley.

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Convergent Evolution for Differing Mediterranean Type Ecosystems Biomes: Research Brief

Convergent Evolution for Differing Mediterranean Type Ecosystems Biomes: Research Brief

Five different Mediterranean Type Ecosystems (MTEs) around the world have evolutionarily converged in function with analogous vegetation types. With gorgeous photographic samplers to illustrate each type, we learn why these fire-adapted systems host more biodiversity than every other terrestrial ecosystem outside of the wet tropics.

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Which Came First, the Fire-prone Habitat or the Fire-adapted Trait?

Which Came First, the Fire-prone Habitat or the Fire-adapted Trait?

Just like soil and climate, fire has been shaping plant communities in fire-prone ecosystems around the world for millions of years. The proof is in the evolution of fire-adapted plant traits, a common theme for the following two research papers.

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Flammable Ecosystems Shaped Three Plant Syndromes

Flammable Ecosystems Shaped Three Plant Syndromes

Because the evidence for fire as an evolutionary force is so overwhelming, Pausas et al. (2016) conveniently organized fire-adapted plant species into three syndromes for better management. The resulting Non-Fast-Hot syndrome scheme shows how different plant species likely evolved to either resist or use three dimensions of flammability (ignitability, fire spread rate, and heat release) for higher fitness. 

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Two Historical Data Sets Tell Different Fire Stories: Research Brief

Two Historical Data Sets Tell Different Fire Stories: Research Brief

A comparison of two historical fire history data sets, the State of California Fire and Resource Protection (FRAP) database and a database based on annual state and federal written reports, found substantial differences between the two.

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Pyrodiversity Doesn’t Always Increase Biodiversity: An Example from Australia: Research Brief

Pyrodiversity Doesn’t Always Increase Biodiversity: An Example from Australia: Research Brief

Site-scale sampling methodologies could be misleading, especially for arid, geographically heterogeneous, biodiversity hotspots. These authors (Taylor et al. 2012) use a landscape-scale methodology to examine one such habitat, 'tree mallee' that has similar fire and ecologic traits to central and southern semi-arid habitats like chaparral. In addition, this study shows that postfire age class heterogeneity doesn’t increase avian species richness in this semi-arid habitat with long fire return intervals.

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Drought and Fire in California: Research Synthesis

Drought and Fire in California: Research Synthesis

The likely effects of drought associated with climate change in the United States have recently been synthesized by James M. Vose, James S. Clark, Charles H. Luce and Toral Patel-Weynand. Here we summarize their conclusions as they apply to drought and fire and provide examples of how these conditions are affecting different ecosystems in California.

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Old-forest Species Threatened by Megafires: Research Brief

Old-forest Species Threatened by Megafires: Research Brief

The King Fire burned through an area used for a long-term (23 years) demography study of spotted owls in the central Sierra Nevada, allowing the authors to compare the number and distribution of owls both before and one year after the fire. 

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Strategic Land Purchases for Private Land Conservation to Reduce Fire Risk: Research Briefs

Strategic Land Purchases for Private Land Conservation to Reduce Fire Risk: Research Briefs

In Southern California,  fuel treatment strategies often put fire risk reduction and biodiversity conservation goals at odds with each other. In response to this conflict, two of our briefs (Syphard et al. 2016; Butsic et al. 2016) explore a novel new approach. 

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Increased fire area and severity in the Sierra Nevada warrant fuels reductions and wildland fire use

Increased fire area and severity in the Sierra Nevada warrant fuels reductions and wildland fire use

The authors assessed relative and absolute changes in wildfire area and severity in seven forest types arrayed along an elevational gradient in the Sierra Nevada and adjacent forested mountains. Findings suggest that there is a major fire “deficit” in the greater Sierra Nevada Region, across all major forest types. However, the nature of this deficit differs among forest types.

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Shrub control associated with reforestation in high-severity burn areas promotes understory diversity: Research Brief

Shrub control associated with reforestation in high-severity burn areas promotes understory diversity: Research Brief

Bohlman et al. conducted a study looking at the effects of post-fire reforestation on understory plant species richness and composition, as well as stand structure. Three different aged fires were selected to assess the role of time since fire on the different stand components.

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Influence of post-fire vegetation and fuels on fire severity patterns in reburns: Research Brief

Influence of post-fire vegetation and fuels on fire severity patterns in reburns: Research Brief

Results from a 2016 study by Coppoletta and others suggests that in areas where fire regimes and forest structure have been dramatically altered, contemporary fires have the potential to set forests on a positive feedback trajectory with successive reburns, one in which extensive stand-replacing fire could promote more stand-replacing fire.

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Predicting Future Fire Regimes: Still a Long Way to Go: Research Brief

Predicting Future Fire Regimes: Still a Long Way to Go: Research Brief

In a review article by Jon Keeley and Alex Syphard, examples from California show that fire regimes are sensitive to geographic and seasonal variation in the climate signal and that many factors will confound the ability to model future conditions.

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Wildfires Differences among Agencies and Ecoregions in the Sierra Nevada: Research Brief

Wildfires Differences among Agencies and Ecoregions in the Sierra Nevada: Research Brief

A 2012 study by Miller and others suggests that fire management approaches used by the National Park Service in Yosemite National Park could assist in the restoration and maintenance of Sierra Nevada forest ecosystems.

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