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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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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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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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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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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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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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Highlights
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Fall prescribed burns combusted more surface soil carbon than spring burns.
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Fall burns stimulated microbial respiration, slowing soil carbon recovery.
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Microbial respiration was lower after spring burns, allowing soil C to…
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Background
Vegetation fire risk is increasing in temperate regions like the UK, yet understanding of surface and synoptic weather controls on fire is limited.
Aims
We examined seasonal relationships between (i) synoptic weather patterns and surface…
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Background
Climate change is expected to alter fire return intervals in cold and wet forests in the northwestern United States. This coupled with an expected rise in prescribed fires to restore healthy forests, disproportionately increases risk to…
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Background
Reducing fuels in overly dense, arid forests of the Western US is a prominent fire mitigation strategy. Fuel treatments, including thinning and prescribed burning, are a means of reintroducing fire to fire-dependent forests and…
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Abstract
Ponderosa pine forests are experiencing large-scale mortality and inadequate natural regeneration across the American Southwest. High-quality nursery-grown ponderosa pine (Pinus ponderosa Douglas ex C. Lawson) seedlings for reforestation…
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Thermal radiation from the flame to the unburned fuel plays a key role in horizontal concurrent flame spread by heating the fuel surface and influencing the spread of the flame. This work investigates thermal radiation in horizontal concurrent flame…
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