Weather Impacts on Fire Thresholds: A Recipe for Big Fire: Research Brief

Weather Impacts on Fire Thresholds: A Recipe for Big Fire: Research Brief

In this important concept paper, Pausas and Keeley (2021) outline the mechanistic flow of complex drivers of wildfire for fire prone ecosystems. In brief, with ignitions, fuel continuity, and drought saturation points simultaneously lowered by the right weather, wildfire will be triggered.

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Mixed-conifer forest resilience: from theory to practice: Research Synthesis

Mixed-conifer forest resilience: from theory to practice: Research Synthesis

This synthesis summaries a set of papers the explore the relationship between landscape-level forest resilience and disturbance regimes and provides strategies for the effective forest management of Sierra Nevada mixed-conifer forests

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Blister rust, beetles, and fire threaten white pines: Research Brief

Blister rust, beetles, and fire threaten white pines: Research Brief

In recent decades white pine blister rust, mountain pine beetle, and fire have increased in extent and caused tree mortality across the western USA. This study used long-term monitoring plots to determine mortality of four white pine species in Sequoia and Kings Canyon National Parks.

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Fire and climate change: conserving seasonally dry forests is still possible: Research Brief

Fire and climate change: conserving seasonally dry forests is still possible: Research Brief

A recent paper by Scott Stephens and co-authors asserts that conservation of western forests is still possible, and describes sensible, evidence-based strategies to improve forest ecosystem resilience.

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Burn weather and fuel structure help to determine post-fire tree mortality: Research Brief

Burn weather and fuel structure help to determine post-fire tree mortality: Research Brief

Understanding post-fire tree mortality is important for planning restoration fire treatments that modify fire behavior and effects and models that reflect multiple spatial and temporal scales are effective tools.

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Forest Restoration and Fuels Reduction: Convergent or Divergent? Research Brief

Forest Restoration and Fuels Reduction: Convergent or Divergent? Research Brief

Do fuel reduction treatments result in restored conditions that align with those found in historically frequent-fire forests of the west? A recent paper sets out to answer that question by examining the principles behind fuel reduction and forest restoration projects and identifying situations where the two approaches align and where they may diverge.

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Forest mid-story interactions with prescribed fire behavior: Research Brief

Forest mid-story interactions with prescribed fire behavior: Research Brief

The study used models to predict fire behavior differences according to two primary factors: mid-story density (i.e. the ladder fuel layer) and live fuel moisture. This is relevant for prescribed burns because both of these factors can be modified when conducting burns.

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Drought and bark beetle induced tree mortality elevates wildfire severity of California’s Sierra Nevada forests: Research Brief

 Drought and bark beetle induced tree mortality elevates wildfire severity of California’s Sierra Nevada forests: Research Brief

This article uses field data from two wildfires (the 2015 Rough Fire and 2016 Cedar Fire) that burned in areas of recent severe tree mortality to examine whether and under what conditions the pre-fire tree mortality affected wildfire severity.

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Post-fire Restoration Framework for California’s National Forests: Research Brief

Post-fire Restoration Framework for California’s National Forests: Research Brief

Restoration of landscapes affected by uncharacteristically large and severe wildfires in California requires a science-based framework to address a complexity of issues and concerns. The authors describe a set of ecological restoration principles, a landscape assessment process, and a framework for decision-making to plan and implement restoration projects.

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Longer-term impacts of fuels reduction treatments in the Lake Tahoe Basin: Research Brief

Longer-term impacts of fuels reduction treatments in the Lake Tahoe Basin: Research Brief

Employing a robust before-after-control-impact (BACI) study design, researchers assessed how thinning in forests altered forest structural conditions in the short- and longer-term in the Sierra Nevada.

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Linking diverse terminology to vegetation type-conversion, a complex emergent property: Research Synthesis

Linking diverse terminology to vegetation type-conversion, a complex emergent property: Research Synthesis

A variety of terms are applied to changes in ecosystems around the world to describe some aspect of long-lasting changes in plant communities. Here we evaluate a representative list of analogous terms for processes and patterns involved in vegetation type-conversion, highlighting similarities and differences.

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Forest recovery following extreme drought in California: Research Brief

Forest recovery following extreme drought in California: Research Brief

This study compares post-drought forests to historical forests to understand if the recent tree mortality event shifted forests closer to or further from resilient conditions.

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Photo credit: Historic conditions in a ponderosa pine stand circa 1917. Source: Sierra National Forest Photo HP0313

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Interactions Between Fire and Climate in the California Sierra Nevada: Research Synthesis

Interactions Between Fire and Climate in the California Sierra Nevada: Research Synthesis

Given the changing disturbance regimes and climate, there is a critical need to take decisive and extensive actions in the next 1-2 decades to conserve Sierra Nevada forests. This synthesis provides a summary of how climate change and fire are impacting our Sierra Nevada Mixed Conifer forests and how active management can help mitigate some of these impacts.

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Treatments and Planting Location Affect Post-Burn Restoration: Research Brief

Treatments and Planting Location Affect Post-Burn Restoration: Research Brief

On a burned site in the northeastern Mojave Desert that is conservation-priority habitat for federally listed desert tortoises, a field experiment was conducted to test different treatments for outplanting greenhouse-propagated seedlings of the native perennial brittlebush (Encelia virginensis).

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