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Displaying 561 - 580 of 5651

Context:Landscape and local factors govern tree regeneration across heterogeneous post-fire forest environments. But their relative influence is unclear—limiting the degree that managers can consider landscape context when delegating resources to…
Author(s): Jamie L. Peeler, Erica A. H. Smithwick
Year Published:

Objective:To identify physiologic stressors related to cardiovascular disease via changes in metabolic, inflammatory, and oxidative stress biomarkers during 2 weeks of preseason training in wildland firefighters (WLFFs). Methods:Participants were…
Author(s): Shae Gurney, Katherine Christison, Cassie M. Williamson-Reisdorph, Joseph A. Sol, Tiffany S. Quindry, John C. Quindry, Charles L. Dumke
Year Published:

Western North American sagebrush shrublands and steppe face accelerating risks from fire-driven feedback loops that transition these ecosystems into self-reinforcing states dominated by invasive annual grasses. In response, sagebrush conservation…
Author(s): Thomas J. Rodhouse, Jeffrey Lonneker, Lisa Bowersock, Diana Popp, Jamela C. Thompson, Gordon H. Dicus, Kathryn M. Irvine
Year Published:

Fuel mapping is key to fire propagation risk assessment and regeneration potential. Previous studies have mapped fuel types using remote sensing data, mainly at local-regional scales, while at smaller scales fuel mapping has been based on general-…
Author(s): Elena Aragoneses, Emilio Chuvieco
Year Published:

North American forests are threatened by changes in climate and disturbance dynamics. Current efforts to model future vegetation and fire dynamics are challenged by the lack of mechanistic representation of ecological processes, the spatial…
Author(s): Kristen Emmett, Katherine M. Renwick, Ben Poulter
Year Published:

Private landowners are important actors in landscape-level wildfire risk management. Accordingly, wildfire programs and policy encourage wildland–urban interface homeowners to engage with local organizations to properly mitigate wildfire risk on…
Author(s): James R. Meldrum, Hannah Brenkert-Smith, Patricia A. Champ, Jamie Gomez, Hilary Byerly, Lilia C. Falk, Christopher M. Barth
Year Published:

In recent decades, climate change has lengthened wildfire seasons globally and doubled the annual area burned. Thus, capturing fire dynamics is critical for projecting Earth system processes in warmer, drier, more fire prone future. Recent advances…
Author(s): Erin J. Hanan, Maureen C. Kennedy, Jianning Ren, Morris C. Johnson, Alistair M. S. Smith
Year Published:

Wildfires were a frequent source of disturbance in forests of the Western United States prior to Euro-American settlement. Following a series of catastrophic wildfires in the Northern Rockies in 1910, the U.S. Forest Service adopted a broad wildfire…
Author(s): Andrea Watts, Frederick C. Meinzer, Thomas A. Spies, Andrew G. Merschel, Steven L. Voelker
Year Published:

Increasing wildfire activity in western North America has the potential to remove forest canopy cover over large areas, increasing the vulnerability of understory plants and juvenile trees to microclimatic extremes. To understand the impacts of…
Author(s): Kyra D. Wolf, Philip E. Higuera, Kimberley T. Davis, Solomon Z. Dobrowski
Year Published:

Charcoal identification and the quantification of its abundance in sedimentary archives is commonly used to reconstruct fire frequency and the amounts of biomass burning. There are, however, limited metrics to measure past fire temperature and fuel…
Author(s): S. Yoshi Maezumi, William D. Gosling, Judith Kirschner, Manuel Chevalier, Henk L. Cornelissen, Thilo Heinecke, Crystal H. McMichael
Year Published:

Wildland fire management across the US is under intense scrutiny as it faces challenges of extreme wildfire seasons, a warming climate and increasing pressures on natural resources. As he ends his term as President of the Student Association for…
Author(s): Lars Filson
Year Published:

A new instrument to quantify firebrand dynamics during fires with particular focus on those associated with the Wildland-Urban Interface (WUI) has been developed. During WUI fires, firebrands can ignite spot fires, which can rapidly increase the…
Author(s): Simone Zen, Jan C. Thomas, Eric Mueller, Bhisham Dhurandher, Michael R. Gallagher, Nick Skowronski, Rory Hadden
Year Published:

We live in a changing world where climate change, built-up fuels, and human ignitions are causing fires to increase in size, frequency, and severity. In this changing world, managers are charged with stewarding resilient landscapes under the…
Author(s): Erica A. H. Smithwick, Jamie L. Peeler
Year Published:

Complexity is the main feature of many fire-prone environments, in which the fire regime is driven by climate and socio-economic development on short and long timescales. In this study, the interaction between social and forest environments is…
Author(s): Nadia Ursino
Year Published:

Violent fire-driven convection can manifest as towering pyrocumulus (pyroCu) or pyrocumulonimbus (pyroCb) clouds, which can have devastating impacts on the environment and society. Their associated fire spread is erratic, unpredictable and not…
Author(s): Rachel Badlan, J. Sharples, Jason P. Evans, Richard H. D. McRae
Year Published:

Smoke detection is of great significance for fire location and fire behavior analysis in a fire video surveillance system. Smoke image classification methods based on a deep convolution network have achieved high accuracy. However, the combustion of…
Author(s): Zhipeng Ding, Yaqin Zhao, Ao Li, Zhaoxiang Zheng
Year Published:

A conceptual model based on the balance of energy in a system composed of a burning cigarette, ambient flow and a porous fuel bed is proposed to study the burning of a single cigarette and the process of fuel bed dehydration, pyrolysis and its…
Author(s): Domingos Xavier Viegas, Ricardo Oliveira, Miguel Almeida, Donghyun Kim
Year Published:

Background: Evidence from previous studies suggests that women firefighters have greater risk of some adverse reproductive outcomes. The purpose of this study was to investigate whether women firefighters had greater risk of miscarriage compared to…
Author(s): Alesia M. Jung, Sara A. Jahnke, Leslie K. Dennis, Melanie L. Bell, Jefferey L. Burgess, Nattinee Jitnarin, Christopher M. Kaipust, Leslie V. Farland
Year Published:

To support improved wildfire incident decision-making, in 2017 the US Forest Service (Forest Service) implemented risk-informed tools and processes, together known as Risk Management Assistance (RMA). The Forest Service is developing tools such as…
Author(s): Courtney Schultz, Lauren Miller, S. Michelle Greiner, Chad Kooistra
Year Published:

Anthropogenic climate change is expected to cause an increase in fire danger over south-eastern Australia during the 21st century, primarily driven by increased surface temperature. Studies of future fire weather in Victoria, Australia, have so far…
Author(s): Scott Clark, Graham A. Mills, Timothy J. Brown, Sarah Harris, John T. Abatzoglou
Year Published: