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Ecosystem

Displaying 1301 - 1320 of 5894 results

Considerable research has explored homeowner wildfire-mitigation efforts identifying many salient factors that help predict acceptance and behaviors. A growing body of literature is unlocking the dynamics of formal associations’ roles in promoting…
Author(s): Eric Steffey, Megha Budruk, Christine A. Vogt
Year Published:

Globally, savanna ecosystems are shifting outside of “safe operating spaces” due to removal of their primary self-reinforcing feedback—fire—and subsequent erosion of disturbance legacies. Restoring savannas will require reinstating fire feedbacks.…
Author(s): Caleb P. Roberts, Victoria M. Donovan, Sarah M. Nodskov, Emma C. Keele, Craig D. Allen, David A. Wedin, Dirac Twidwell
Year Published:

In this study, we use simulations from seven global vegetation models to provide the first multi‐model estimate of fire impacts on global tree cover and the carbon cycle under current climate and anthropogenic land use conditions, averaged for the…
Author(s): Gitta Lasslop, Stijn Hantson, Sandy P. Harrison, Dominique Bachelet, Chantelle Burton, Matthias Forkel, Matthew Forrest, Fang Li, Joe R. Melton, Chao Yue, Sally Archibald, Simon Scheiter, Almut Arneth, Thomas Hickler, Stephen Sitch
Year Published:

Grasslands occur on all of the continents. They collectively constitute the largest ecosystem in the world, making up 40.5% of the terrestrial land area, excluding Greenland and Antarctica. Grasslands are not entirely natural because they have…
Author(s): Daniel G. Neary, Jackson M. Leonard
Year Published:

Culture influences how fire is perceived and managed in societies. An increasing risk of catastrophic wildfire has shifted political and academic attention on the use of Indigenous fire management (IFM) as an alternative to the common fire…
Author(s): William Nikolakis, Emma Roberts
Year Published:

Coupled fire-atmospheric modeling tools are increasingly used to understand the complex and dynamic behavior of wildland fires. Multiple research tools linking combustion to fluid flow use Navier-Stokes numerical solutions coupled to a thermodynamic…
Author(s): Rodman Linn, Scott L. Goodrick, Sara Brambilla, Martin J. Brown, R. S. Middleton, Joseph J. O'Brien, J. Kevin Hiers
Year Published:

Particularly in rural settings, there has been little research regarding the health impacts of fine particulate matter (PM2.5) during the wildfire season smoke exposure period on respiratory diseases, such as influenza, and their associated…
Author(s): Erin L. Landguth, Zachary A. Holden, Jonathan M. Graham, Benjamin Stark, Elham Bayat Mokhtari, Emily Kaleczyc, Stacey Anderson, Shawn P. Urbanski, William Matt Jolly, Erin O. Semmens, Dyer A. Warren, Alan Swanson, Emily Stone, Curtis W. Noonan
Year Published:

Fire interactions between multiple 1 m tall, 0.7 m diameter chamise shrubs was studied utilizing the Wildland-Urban Interface Fire Dynamics Simulator (WFDS, Mell et al., 2009). Two shrub arrangements were investigated. First, nine shrubs were placed…
Author(s): William Shannon, Chandana Anand, Babak Shotorban, Shankar M. Mahalingam
Year Published:

Municipal firefighters count on their protective garments to avoid skin burns caused by thermal and flame exposures. Typical firefighting garment consists of three layers of different fire-resistant fabrics named as outer shell, moisture barrier and…
Author(s): Ahmed Ghazy
Year Published:

As wildfire seasons have expanded in duration and intensity, the effort and dedication required of wildland firefighters have increased (Withen 2015). Firefighters now work from April, when fuels first become available for burning, until well into…
Author(s): Ben McLane
Year Published:

Wildfires can have severe and lasting impacts on the water quality of aquatic ecosystems. However, our understanding of these impacts is founded primarily from studies of small watersheds with well-connected runoff regimes. Despite the predominance…
Author(s): Craig A. Emmerton, Colin A. Cooke, Sarah Hustins, Uldis Silins, Monica B. Emelko, Ted Lewis, Mary K. Kruk, Nadine Taube, Dongnan Zhu, Brian Jackson, Micheal Stone, Jason G. Kerr, John F. Orwin
Year Published:

Background: Frequent-fire forests of the western United States have undergone remarkable changes in structure, composition, and function due to historical exclusion of naturally occurring fire. Mechanized tree thinning to reduce forest density and…
Author(s): David W. Huffman, John Paul Roccaforte, Judith D. Springer, Joseph E. Crouse
Year Published:

Wildfire danger assessment is essential for operational allocation of fire management resources; with longer lead prediction, the more efficiently can resources be allocated regionally. Traditional studies focus on meteorological forecasts and fire…
Author(s): Alireza Farahmand, E. Natasha Stavros, John T. Reager, Ali Behrangi
Year Published:

Late-1800s land surveys were used to reconstruct historical forest structure and fire over more than 235,000 ha in ponderosa pine and mixed conifer landscapes of the San Juan Mountains, Colorado, to further understand differences among regional…
Author(s): William L. Baker
Year Published:

Natural disastrous events are part and parcel of our times and do occur when we least expect it to strike us. Disasters which take place in the vicinity of human livelihood due to natural causes, such as forest fires, tsunami, earthquakes, floods,…
Author(s): Aditya Dhall, Akash Dhasade, Mohan Raj V.K., Vinay Kulkarni
Year Published:

Traditional methods for assessing fire danger often depend on meteorological forecasts, which have reduced reliability after ∼10 d. Recent studies have demonstrated long lead-time correlations between pre-fire-season hydrological variables such as…
Author(s): Alireza Farahmand, E. Natasha Stavros, John T. Reager, Ali Behrangi, James T. Randerson, Brad Quayle
Year Published:

The photoload technique provides a quick and accurate means of estimating the loadings of six wildland fuel components including 1 hr, 10 hr, 100 hr, and 1,000 hr downed dead woody, shrub, and herbaceous fuels. It involves visually comparing fuel…
Author(s): Christine Stalling, Robert E. Keane
Year Published:

In large-scale mass fires generated in forests or by a nuclear event, the area of the fire is large (diameter 1 or more kilometers) whereas the flame height is relatively small (less than 10 m) creating a large turbulent buoyant plume. This paper…
Author(s): Michael Delichatsios, Jianping Zhang
Year Published:

Wildfires are a serious threat to ecosystems and human life. Usually, smoke is generated before the flame, and due to the diffusing nature of the smoke, we can detect smoke from a distance, so wildfire smoke detection is especially important for…
Author(s): Guodong Zhu, Zhenxue Chen, Chengyun Liu, Xuewen Rong, Weikai He
Year Published:

Large outdoor fires are one of the prominent fire problems in the world. Spot fires, caused by firebrands, are known as a key mechanism of rapid fire spread. Firebrands ignite unburned fuels far ahead of the fire front. In large outdoor fires,…
Author(s): Sayaka Suzuki, Sam Manzello
Year Published: