Articles tagged with Forest Fires
Researchers discovered that certain microorganisms dominate burned soil after a wildfire, with some species increasing in abundance and others consuming charcoal. This finding could help revive megafire dead zones and provide insights into the human microbiome's response to stress.
A new study shows that midwinter dry spells accelerate snowmelt in burned areas, as wildfires increase sun exposure and reduce the snowpack's ability to reflect sunlight. This can lead to earlier snowmelt, affecting water availability and forecasting, with cascading impacts on hydrology.
A new framework incorporates plant physiology into fine-scale computer models of wildland fire, improving global fire forecasting. Plants' water and carbon dynamics influence combustion and heat transfer, affecting fire behavior and effects.
A recent study reveals that high-severity wildfires are increasing in Sierra Nevada and Southern Cascade forests, with the average annual area burned at high severity nearly quintupled since before Euro-American settlement. This trend is concerning as most affected forest types are adapted to low-to-moderate severity burning.
A new study reveals that re-burns in the western US, particularly in California, are fueled by climate change, seasonal factors, and human activity. Understanding these drivers can help land managers develop more effective fire management strategies, including prescribed burns and forest thinning.
A European consortium has successfully guided lightning using a high-power laser installed at the top of Mount Säntis in Switzerland, increasing the radius of protection from 120m to 180m. The Laser Lightning Rod (LLR) works even in poor weather conditions, such as fog.
A study found bird diversity and abundance increased in areas with high-severity burns, but some species showed lower abundance. The findings suggest that managing forests to promote shrubland bird species could be beneficial. Researchers hope the results can inform forest management strategies to benefit birds.
Researchers found that oscillations between extreme wetness and aridity in California were closely linked with wildfires during the 8.2-kiloyear event. The study suggests that hydroclimate fluctuations will become more common due to global warming, leading to an increase in wildfire activity.
A new study suggests that Native American tribes once used controlled burns to weaken climate's impact on wildfires. For roughly 400 years, cultural burning practices appear to have broken the link between climate conditions and fire activity in the southwestern United States. This ancient approach may hold lessons for modern wildfire ...
Scientists developed a first model to predict canopy water content during drought and heat waves. The model could enable fire danger forecasting models that include vegetation in their calculations, making it easier to predict the spread of fires.
Researchers used social media data to hindcast recreation visits before and after the fire, creating a complete picture of visitation changes. The approach holds promise for large, multi-ownership landscapes with inconsistent monitoring practices.
New research shows a strong link between atmospheric dryness and forest fire risk, with warmer temperatures increasing the drying power of fuels. The study found that over 30 million records of fire activity in the last 20 years reveal a predictable relationship between vapour pressure deficit and fire activity.
A recent study analyzing Amazon Rainforest fires from 2003-2020 reveals that most fires are caused by uncontrolled human use of fire for agriculture and deforestation. The study found that Brazil accounted for an average of 73% of detected fires, with pasturelands and natural grasslands being the main burned areas.
A new Concordia University study reveals that extreme weather events, such as hurricanes and heatwaves, have failed to drive government climate action. Despite the devastating economic and human costs of these disasters, governments have remained slow to enact meaningful reforms.
A team of CSU researchers has designed a model that can predict which buildings will survive a wildfire, allowing for more effective fire mitigation strategies. By analyzing community networks and incorporating graph theory, the model achieves accuracy rates of up to 86% in predicting building survival.
Researchers suggest that prescribed fire can help restore forest habitats less favorable to disease-carrying ticks, reducing their populations. Fire-driven forest modification can also suppress tick abundance and pathogen transmission by creating drier conditions and increasing wildlife predators of ticks.
Researchers studied post-wildfire regeneration in the northern Rocky Mountains, discovering that cool and moist conditions promote seedling growth. Burned trees provide vital functions, including shade and attracting woodpeckers, while seeds can survive even if the tree dies.
A new study reveals that western wildfires can strengthen storms in central US states, leading to heavier rain and flash flooding. The heat and airborne particles from wildfires intensify severe storms, with some cases bringing hailstones larger than baseballs.
Researchers study links between cyclones and forest fires, finding that cyclones can create conditions ripe for fires by damaging trees and altering microclimates. As climate change increases cyclone intensity, the risk of wildfires in previously fire-resistant ecosystems like rainforests grows.
A study by Oregon State University found that warmer stream temperatures in a burned-over watershed did not result in fewer trout. The researchers discovered that steelhead, cutthroat, and rainbow trout were resilient to the increased temperatures, which rose above 22 degrees Celsius during summer 2021. However, more research is needed...
A new resilience sensing system can identify areas in danger of collapse and measure the success of conservation efforts. Global average resilience has declined over the last 20 years, with regions such as the Amazon rainforest showing signs of loss of resilience.
A study reveals a significant increase in fire risk in Southern, Central, and Northern Europe, particularly in the Mediterranean region, linked to climate change. The increased fire risk threatens key carbon sinks like the Pyrenees and Alps, highlighting the need for effective forest management strategies.
New research highlights how climate change enhances wildfire risk globally, but human actions and policies can mitigate regional impacts. The study assesses 500 previous papers and examines future fire weather trends to provide insight into the success or failure of climate policies.
Researchers examine historical data and weather patterns to understand west-side wildfires' timing, size, and causes. They find that severe fires are normal for the region when looking at longer time scales, and conventional fire management tools may be less effective due to extreme winds.
Researchers at North Carolina State University designed new fire shelter prototypes to protect firefighters trapped in wildfires. The shelters showed improved thermal performance and longer survival times compared to the current industry standard, with temperatures remaining within survival limits for up to 60 seconds.
A new study finds that climate change is projected to increase the risks of tree death in US forests by 4-14 times by 2099, depending on carbon emissions scenarios. Human actions to tackle climate change can significantly reduce these risks.
A new study from McGill University finds that people living near regions prone to wildfires may have a higher incidence of lung cancer and brain tumors. Exposure to carcinogenic wildfire pollutants on a chronic basis increases the risk of certain cancers, according to researchers.
A study found that protected conservation areas in Madagascar experienced unprecedented spikes in fires during the COVID-19 pandemic, particularly when on-site management was suspended. The team suggests that governments should consider keeping some staff in protected areas to mitigate this impact.
Experts propose a consensus approach to address the impact of forest fires on human health. The method emphasizes controlled burns as a tool to reduce explosive wildfires and improve forest health. The approach also prioritizes inclusivity in decision-making, particularly for populations disproportionately affected by smoke exposure.
The UN Convention to Combat Desertification's Global Land Outlook 2 report warns that up to 40% of the planet's land is degraded, threatening half of humanity and roughly 1/2 of world GDP. The report offers hundreds of practical ways to restore land and ecosystem health.
A study by Portland State University researchers found that extreme winds were the primary driver of the devastating 2020 Oregon megafires, but topography and vegetation structure also significantly influenced burn severity. Younger trees and low canopy height were particularly susceptible to high mortality rates.
A new study reveals that deforestation has significant biophysical effects on climate, including changes in heat distribution and water cycles. Forests play a crucial role in dispersing heat and transferring water from the surface to the atmosphere, which affects regional hydrological cycles.
Researchers analyzed two peat cores to discover that higher concentrations of charcoal occurred between 9,000 to 4,000 years ago due to larger forest fires. Mangrove pollen found in the earlier period indicates rising sea levels and increased salt, contributing to dry conditions suitable for massive forest fires.
A new 30m resolution global map shows that wildfires caused 26-29% of global forest loss between 2001 and 2019, with primary tropical forests in Africa and Latin America being particularly affected. The researchers hope their map will improve climate modeling and inform forest management policies.
The European Union is projected to experience increased fire-prone areas, threatening biodiversity and carbon sinks. The IPCC report highlights the need for adaptation in addressing wildfires, focusing on fire and forest management to increase ecosystem resilience.
The Amazon rainforest is experiencing a decline in resilience, which could trigger dieback and have severe consequences for the environment. The study found that resilience has dropped consistently since the early 2000s, with parts of the forest losing resilience faster due to deforestation and climate change.
The number of wildfires is projected to increase by 50% by 2100 due to climate change and land-use changes. Governments are called to radically shift their investments to focus on prevention and preparedness.
The report projects a global increase in extreme fires by up to 50% by the end of the century, with a call for governments to shift their investments from reaction to prevention and preparedness. The authors recommend a 'Fire Ready Formula' with two-thirds of spending devoted to planning, prevention, and recovery.
Research led by Oregon State University contradicts the common narrative of wildfires igniting on remote public land before spreading to communities. The study found that fires crossing jurisdictional boundaries are primarily caused by people on private property, accounting for more than 60% of ignitions.
A new study suggests that wildfires can lead to increased soil carbon stocks in savannahs and grasslands, potentially offsetting short-term emissions. The research found that fires could store up to 90 million tonnes of carbon per year, but the breakdown rate of charcoal in soils remains uncertain.
A new Stanford University study reveals that communities near the West's wildland-urban interface are vulnerable to wildfires due to drought-sensitive ecosystems. The research identifies 18 'double-hazard' zones where plant-water sensitivity and atmospheric dryness create high wildfire risks.
A new study reveals that trees benefit from having more space, reducing competition and helping them recover from fire damage. By alleviating stress caused by neighbors competing for limited water resources, trees can fend off beetle attacks and heal after fire, increasing their chances of survival.
The 2020 wildfires in Brazil's Pantanal wetland resulted in the deaths of an estimated 16.9 million vertebrates, including lizards, birds, and primates. The study estimates that between 13.2 million and 18.8 million small vertebrates and 691,000 to 1.2 million medium-to-large vertebrates were killed.
UNM scientists found climate-driven tree mortality and fuel aridity are increasing fuel availability, leading to bigger, more intense wildfires. This is due to drought stress, insect outbreaks, and temperature increases causing large areas of tree mortality and rising temperatures drying out forest fuels.
A new OSU study found that snow cover plays a critical role in post-fire revegetation in the Pacific Northwest. Summer precipitation was the most important variable driving this process across four subregions, while snow cover frequency and prefire forest composition were also significant influencers.
Exposure to fire smoke from landscape fires during pregnancy is linked to low birth weights, a public health problem in LMICs. Newborns from families with lower average birthweights are most susceptible to the risks of pollution.
Researchers tracked black-tailed deer before, during, and after the Mendocino Complex Fire, finding that all 18 deer survived. Despite burned areas with no vegetation, most deer returned home within hours, potentially due to their loyalty to habitat. However, some deer's body condition declined as they expanded their range.
A Brazilian study reveals that forest fires and wildfires modify the freezing process of cloud droplets, altering natural cloud functioning and potentially impacting precipitation. The research used a large dataset to show that aerosols emitted by fires can affect cloud formation in southern Amazonia during the rainy season.
Mechanical thinning alone can moderate forest fire behavior, even in the absence of prescribed fires, according to OSU research. The study found that fuels built up after thinning declined dramatically, reducing the risk of severe wildfires.
Researchers developed DamageMap, an AI system that uses machine learning to identify building damage from post-wildfire images, achieving 92% accuracy. The system can analyze satellite and aerial photos to pinpoint damaged buildings, providing immediate results for first responders and fire victims.
Researchers analyzed past fires in Klamath Mountains, finding that weather and fuels impact non-reburns while reburn intensity mirrors previous fires. Prescribed fire and wildfire management can limit severe fire conditions, maintaining moderate weather for future fires.
An international study found Canadians have the highest relative risk of respiratory mortality resulting from wildfire pollution. Exposure to fine particulate matter from wildfires increased risks of all causes, cardiovascular, and respiratory mortality, with about 0.4 percent of total mortality attributable to wildfire smoke.
A new study quantifies the contribution of agricultural and forest fires to poor air quality in Southeast Asia, finding that preventing these fires could reduce premature deaths by an estimated 59,000 annually. The region's poorest communities are disproportionately exposed to air pollution from these fires.
Researchers combined VOD with remote sensing data from optical satellites to analyze the effects of fire on Amazon canopy dynamics. The study found that VOD provided a more accurate picture of photosynthetic and non-photosynthetic biomass changes, and that rainfall was close to average during the fire season.
A new study assesses the impact of environmental policies on Amazon biodiversity, finding that 40-73,400 square miles of rainforest have been affected by fires since 2001. The research highlights the need for strong antideforestation policies and recognition of Indigenous lands to protect the region's biodiversity.
Researchers studied Northern California residents' responses to wildfire smoke, finding that social norms and social support significantly influence protective health actions. The study aims to promote safer behavior by understanding how people interact with information and make decisions during smoke events.
A study found that fires in the Amazon's wettest areas destroy small and medium-sized trees, leading to a loss of biomass and carbon stocks. The destruction can last for decades, with saplings and bushes being among the first to die.
Researchers at KAUST developed a new method to simulate the spread of wildfires through forests, capturing complex dynamics involved. The model accurately predicts fire behavior at forest scale and can be used to optimize firebreaks and improve wildfire management.
Decades of fire suppression have eliminated valuable wildlife habitat, but allowing lightning fires to burn has restored a resilient ecosystem with increased plant and pollinator biodiversity. This approach also limits the severity of wildfires and increases water availability during droughts.
Research by University of Washington and US Forest Service scientists reveals a dramatic shift in nighttime air's drying power over the Western US, increasing wildfire activity. This shift is not captured in climate models, with some areas experiencing water loss doubling up on warmer nights.