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Displaying 141 - 160 of 5651

An experimental study at a laboratory scale that aims to compare the fire behaviour in two configurations: a regular flat slope and a slope with an embedded canyon. In configurations of slope with an embedded canyon, a rapid increase in the rate of…
Author(s): André Rodrigues, Domingos Xavier Viegas, Miguel Almeida, Carlos Ribeiro, Jorge R. Raposo, Jorge André
Year Published:

Wildfire spread models that couple physical transport and chemical kinetics sometimes simplify or neglect gas-phase pyrolysis product oxidation chemistry. However, empirical evidence suggests that oxygen (O2) is available for gas-phase and solid-…
Author(s): Alexandra Howell, Erica Belmont, Sara S. McAllister, Mark A. Finney
Year Published:

Biodiversity is in chronic decline, and extreme events - such as wildfires - can add further episodes of acute losses. Fires of increasing magnitude will often overwhelm response capacity, and decision-makers need to make choices about what to…
Author(s): John C. Z. Woinarski, Phillipa C. McCormack, Jan McDonald, Sarah Legge, Stephen T. Garnett, Brendan A. Wintle, Libby Rumpff
Year Published:

As the 2023 fire season rages with unprecedented intensity in Canada, millions of people and countless animals across North America are exposed to wildfire smoke. Its harmful effects on human and animal health are only beginning to be explored in…
Author(s): Michael Gross
Year Published:

Background: Historically, reburn dynamics from cultural and lightning ignitions were central to the ecology of fire in the western United States (wUS), whereby past fire effects limited future fire growth and severity. Over millennia, reburns…
Author(s): Susan J. Prichard, R. Brion Salter, Paul F. Hessburg, Nicholas A. Povak, Robert W. Gray
Year Published:

Background: Reliable wildfire prediction and efficient controlled burns require a comprehensive understanding of physical mechanisms controlling fire spread behaviour. Earlier studies explored the intermittent nature of free-burning fires, but the…
Author(s): Abhinandan Singh, Reza M. Ziazi, Albert Simeoni
Year Published:

As a general disturbance in terrestrial ecosystems, fire can have far-reaching consequences on the carbon (C) cycle. Although soil respiration (SR) is important in regulating atmospheric CO2 concentrations, a general pattern of the response of SR to…
Author(s): Haoran Gui, Jiali Wang, Mengjun Hu, Zhenxing Zhou, Shiqiang Wan
Year Published:

The historical role of fire in sagebrush (Artemisia tridentata) landscapes remains poorly understood, yet is important to inform management and conservation of obligate species such as the threatened Gunnison Sage-grouse (GUSG; Centrocercus minimus…
Author(s): Petar Z. Simic, Jonathan D. Coop, Ellis Q. Margolis, Jessica R. Young, Manuel K. Lopez
Year Published:

Wildfires affect countries worldwide as global warming increases the probability of their appearance. Monitoring vast areas of forests can be challenging due to the lack of resources and information. Additionally, early detection of wildfires can be…
Author(s): Georgios Tzoumas, Lenka Pitonakova, Lucio Salinas, Charles Scales, Thomas Richardson
Year Published:

Increases in burned forest area across the western United States and southwestern Canada over the last several decades have been partially driven by a rise in vapor pressure deficit (VPD), a measure of the atmosphere's drying power that is…
Author(s): Kristina A. Dahl, John T. Abatzoglou, Carly A. Phillips, J. Pablo Ortiz-Partida, Rachel Licker, L. Delta Merner, Brenda Ekwurzel
Year Published:

Background: Further understanding of the effect of fuel structure on underlying physical phenomena controlling flame spread is required given the lack of a coherent porous flame spread theory. Aims: To systematically investigate the effect of fuel…
Author(s): Zakary Campbell-Lochrie, Carlos Walker-Ravena, Michael R. Gallagher, Nick Skowronski, Eric Mueller, Rory Hadden
Year Published:

Wildfire has been shown to increase, decrease, or have no detectable effect on actual evapotranspiration (ETa) fluxes in the western United States. Where disturbance-induced shifts are significant, source-water hydrology may be impacted as ETa…
Author(s): Natalie M. Collar, Brian A. Ebel, Samuel Saxe, Ashley J. Rust, Terri S. Hogue
Year Published:

As 21st-century climate and disturbance dynamics depart from historical baselines, ecosystem resilience is uncertain. Multiple drivers are changing simultaneously, and interactions among drivers could amplify ecosystem vulnerability to change.…
Author(s): Kristin H. Braziunas, Nathan G. Kiel, Monica G. Turner
Year Published:

Background: The models currently used to predict post-fire soil erosion risks are limited by high data demands and long computation times. An alternative is to map the potential hydrological and sediment connectivity using indices to express the…
Author(s): Joana Parente, João Pedro Nunes, J. E. M. Baartman, Dante Follmi
Year Published:

The Rothermel model, which has been widely used to predict the rate of forest fire spread, has errors that restrict its ability to reflect the actual rate of spread (ROS). In this study, the fuels from seven typical tree species in the Karst…
Author(s): Yunlin Zhang, Lingling Tian
Year Published:

Ambient wildfire smoke in the American West has worsened considerably in recent decades, while the number of individuals recreating outdoors has simultaneously surged. Wildfire smoke poses a serious risk to human health, especially during long…
Author(s): Matthew Clark, Alexander Killion, Matthew A. Williamson, Vicken Hillis
Year Published:

Disturbances are ubiquitous in ecological systems, and species have evolved a range of strategies to resist or rebound following disturbance. Understanding how the presence and complementarity of regeneration traits will affect community responses…
Author(s): T. Ramiadantsoa, Zakary Ratajczak, Monica G. Turner
Year Published:

With wildfires reaching unprecedented levels of severity, size and frequency, their impact on soil microbial communities is an important concern. Commencing just weeks following a wildfire in a Douglas-fir-Ponderosa pine forest, we collected surface…
Author(s): Erica E. Packard, Daniel M. Durall, Melanie D. Jones
Year Published:

Patterns of spatial heterogeneity in forests and other fire-prone ecosystems are increasingly recognized as critical for predicting fire behavior and subsequent fire effects. Given the difficulty in sampling continuous spatial patterns across scales…
Author(s): Chad M. Hoffman, Justin P. Ziegler, Wade T. Tinkham, J. Kevin Hiers, Andrew T. Hudak
Year Published:

One of the worst environmental catastrophes that endanger the Australian community is wildfire. To lessen potential fire threats, it is helpful to recognize fire occurrence patterns and identify fire susceptibility in wildfire-prone regions. The use…
Author(s): Abolfazl Abdollahi, Biswajeet Pradhan
Year Published: