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Wildfires are crucial in shaping forest ecosystems globally, influencing structure, biodiversity, and ecosystem services. However, the interaction of climate change, reduced grazing, fuel accumulation, and human-caused ignitions has led to a…
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Wildland fire smoke has long been recognized as primarily a mixture of gases and particulate matter with the potential to impact air quality and human health. New research has revealed that smoke also carries elevated concentrations of viable…
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Abstract
Background
In response to record-breaking wildfire seasons worldwide, wildfire researchers are increasingly called upon to conduct research to better understand the drivers and impacts of “megafires.” However, there is limited attention to…
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Background
Wildfires have burned large areas of forest in Central Europe in recent years, and the risk of fires is predicted to increase. However, this region is still underrepresented in fire ecology research. To help to fill this knowledge gap, we…
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To restore ecosystem health and reduce the negative impacts of wildfire, scientists and land managers argue that more prescribed fire is needed on the land. However, a lack of effectively trained personnel in the role of “burn boss” is a barrier to…
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As wildfire activity increases globally, understanding how soil microbial communities vary in young postfire forests and the effect of short fire-return intervals on these communities becomes increasingly important for anticipating postfire…
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Highlights
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Understory plant diversity showed a U-shaped trend across successional stages.
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Beta diversity was driven by species turnover, with no trend across succession.
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Structural heterogeneity (deadwood, canopy, tree size) enhanced…
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As wildfire activity increases globally, understanding how soil microbial communities vary in young postfire forests and the effect of short fire-return intervals on these communities becomes increasingly important for anticipating postfire…
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Background
Horizontally continuous fuel types such as pine litter can sustain flame spread along individual fuel particles, but little is known about how wind affects flame behavior at this fine scale.
Aims
We conducted experiments to examine flame…
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Background
Changes in climate and vegetation, in combination with fire exclusion, are altering and homogenizing fire regime attributes compared to historical conditions. Fire regime changes are commonly quantified using departure metrics based on…
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The relationships between chronic exposure to wildfire smoke PM2.5 (particulate matter with aerodynamic diameter of ≤2.5 μm) and mortality remain poorly understood, with causal evidence being particularly scarce. In this ecological study, we used a…
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Background: In response to record-breaking wildfire seasons worldwide, wildfire researchers are increasingly called upon to conduct research to better understand the drivers and impacts of “megafires.” However, there is limited attention to the…
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Background
Despite growing attention to wildland firefighter safety, little is known about the full scope of environmental health hazards experienced occupationally. Previous research has documented exposures to carcinogens and combustion byproducts…
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Decades of fire suppression have increased fuel loads and fire severity, leading to the “fire suppression paradox”—by suppressing fires, we potentially make fires harder to put out in the future. However, in a new paper, the authors show a separate…
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Background
Experimental forests present unrivaled opportunities to understand the factors influencing vegetation structure many decades after silvicultural treatments or natural disturbances. In this study, we use the western larch-dominated moist…
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Background
Silvicultural treatments that modify forest structure and reduce fuel loads can help mitigate future wildfire effects, but treatment efficacy declines over time. In 2021, we remeasured a southern Sierra Nevada mixed conifer forest 13…
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It has long been recognized that antecedent weather and climate conditions strongly modulate wildfire activity across a wide range of ecosystems and vegetation types. On short timescales, low humidity and high wind conditions can favor fast-…
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This research assesses the effect of two common assumptions in simplified flame spread models: (i) that the pyrolysis front propagates in one dimension and (ii) that ignition time () and heat release rate per unit area (HRRPUA) values measured at…
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Forest ecosystems, as vital natural resources, are increasingly endangered by wildfires. Effective forest fire management relies on the accurate and early detection of small–scale flames and smoke. However, the complex and dynamic forest environment…
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A portable and integrated monitoring device was developed to digitally assess both water levels and surrounding fire-related conditions in forest firefighting water buckets using multi-sensor fusion. The system integrates a hydrostatic liquid-level…
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