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Ecosystem

Displaying 1121 - 1140 of 5896 results

Despite the increasing challenges wildfires are posing around the globe, and the flourishing production of high-quality wildfire scientific knowledge, the ability of fire science to impact knowledge on the ground, for people, society, economy, and…
Author(s): Fantina Tedim, Sarah M. McCaffrey, Vittorio Leone, Carmen Vazquez-Varela, Yaella Depietri, Petra Buergelt, Raffaella Lovreglio
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
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Due to the increased concern for the environment, sustainable construction materials are getting increased attention. Wood is considered a renewable, sustainable construction material. The problem with wood is that it is a fire-prone material. With…
Author(s): Sayaka Suzuki, Sam Manzello
Year Published:

As global warming continues, wildland lightning fires have exhibited an increasing trend. The phenomenon of lightning ignition and a model are urgent research fields. In this study, an impulse current generator was used to study artificial lightning…
Author(s): Junwei Feng, Hao Shen, Dong Liang
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:

Wildfire is a dynamic natural process that continually shapes the structure and composition of landscapes. However, due to a combination of factors including climate change, management decisions and population growth, this natural process is having…
Author(s): Brooke R. Saari, Sonia A. Hall
Year Published:

Mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins) causes extensive tree mortality in whitebark pine (Pinus albicaulis Engelm) forests. Previous studies conducted in lodgepole pine (Pinus contorta Douglas), Douglas-fir (Pseudotsuga…
Author(s): Curtis A. Gray, Chelsea Toone, Michael J. Jenkins, Sarah E. Null, Larissa L. Yocom
Year Published:

The effectiveness of a fuelbreak, created in a homogeneous grassland on a flat terrain, was studied numerically. The analysis relies on 3D numerical simulations that were performed using a detailed physical-fire-model (FIRESTAR3D) based on a…
Author(s): N. Frangieh, Gilbert Accary, Jean Louis Rossi, D. Morvan, Sofiane Meradji, Thierry Marcelli, François Joseph Chatelon
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:

The current COVID-19 pandemic has demonstrated the vulnerability of healthcare systems worldwide. When combined with natural disasters, pandemics can further strain an already exhausted healthcare system. To date, frameworks for quantifying the…
Author(s): Emad M. Hassan, Hussam Mahmoud
Year Published:

Motivation. The World Health Organization declared COVID-19 a global pandemic on March 11, 2020 just as the southwestern region begins to see increased fire activity. The project PIs had been collaborating on other wildfire projects but also had…
Author(s): Jude Bayham, Erin J. Belval, Matthew P. Thompson
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:

We present an analysis of the spatio-temporal trends derived from long-term burned area (BA) data series. Two global BA products were included in our analysis, the FireCCI51 (2001-2019) and the FireCCILT11 (1982-2018) datasets. The former was…
Author(s): Gonzalo Otón, Jose M. C. Pereira, João M. N. Silva, Emilio Chuvieco
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:

Changing climatic conditions prompt concerns about vegetation response to disturbance under future compared to past conditions. In this long‐term study, we examined soil climate and vegetation differences at lower, mid, and upper elevations in two…
Author(s): Bruce A. Roundy, Jeanne C. Chambers
Year Published:

Grazing and fire are both independently important drivers of plant community dynamics; however, their interactive effects may be even more influential. Little is known about prefire grazing effects on postfire plant community dynamics. We…
Author(s): Kirk W. Davies, Jonathan D. Bates, Chad S. Boyd, Rory O'Connor, Stella M. Copeland
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:

The fire plume height (smoke injection height) is an important parameter for calculating the transport and lifetime of smoke particles, which can significantly affect regional and global air quality and atmospheric radiation budget. To develop an…
Author(s): Ziming Ke, Yuhang Wang, Yufei Zou, Yongjia Song, Yongqiang Liu
Year Published:

Improving the accuracy of fire behavior prediction requires better understanding of live fuel, the dominant component of tree crowns, which dictates the consumption and energy release of the crown fire flame-front. Live fuel flammability is not well…
Author(s): Oleg M. Melnik, Stephen A. Paskaluk, Mark Y. Ackerman, Katharine O. Melnik, Dan K. Thompson, Sara S. McAllister, Michael D. Flannigan
Year Published:

With the increasing frequency and severity of fire, there is an increasing desire to better manage fuels and minimize, as much as possible, the impacts of fire on soils and other natural resources. Piling and/or burning slash is one method of…
Author(s): William J. Massman
Year Published: