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Ecosystem

Displaying 1561 - 1580 of 5949 results

Whitebark pine (Pinus albicaulis) is a critical forest species of Northern Rocky Mountain upper subalpine ecosystems, yet little is known about the physiological response of whitebark pine to disturbance (e.g. fire, bark beetles, and pathogens)…
Author(s): Nickolas E. Kichas, Sharon M. Hood, Gregory T. Pederson, Richard G. Everett, Dave McWethy
Year Published:

Questions: Increased wildfire activity is resulting in plant community‐type conversions worldwide. In some regions, fire‐sensitive forests are being replaced by flammable fire‐resilient communities, increasing the likelihood of reburning due to…
Author(s): Jennifer B. Landesmann, Florencia Tiribelli, Juan Paritsis, Thomas T. Veblen, Thomas Kitzberger
Year Published:

Context: Fire in forested wildland urban interface (WUI) landscapes is increasing throughout the western United States. Spatial patterns of fuels treatments affect fire behavior, but it is unclear how fire risk and fuel treatment effectiveness will…
Author(s): Kristin H. Braziunas, Rupert Seidl, Werner Rammer, Monica G. Turner
Year Published:

This paper describes a new dataset mined from the public archive (1999–2014) of the U.S. National Incident Management System/Incident Command System Incident Status Summary Form (a total of 124,411 reports for 25,083 incidents, including 24,608…
Author(s): Lise A. St. Denis, Nathan Mietkiewicz, Karen C. Short, Mollie Buckland, Jennifer Balch
Year Published:

A simple, easy-to-evaluate, surrogate model was developed for predicting the particle emission source term in wildfire simulations. In creating this model, we conceptualized wildfire as a series of flamelets, and using this concept of flamelets, we…
Author(s): Alexander J. Josephson, Troy M. Holland, Sara Brambilla, Michael J. Brown, Rodman Linn
Year Published:

Improving decision processes and the informational basis upon which decisions are made in pursuit of safer and more effective fire response have become key priorities of the fire research community. One area of emphasis is bridging the gap between…
Author(s): Francisco Rodriguez y Silva, Christopher D. O'Connor, Matthew P. Thompson, Juan Ramón Molina Martínez, David E. Calkin
Year Published:

Developing standardised classification of post-fire responses is essential for globally consistent comparisons of woody vegetation communities. Existing classification systems are based on responses of species growing in fire-prone environments. To…
Author(s): Lynda D. Prior, David M. J. S. Bowman
Year Published:

Burning firebrands generated by wildland or prescribed fires may lead to the initiation of spot fires and fire escapes. At the present time, there are no methods that provide information on the thermal characteristics and number of such firebrands…
Author(s): Sergey Prohanov, Alexander I. Filkov, Denis P. Kasymov, Mikhail Agafontsev, Vladimir V. Reyno
Year Published:

Shifting fire regimes are substantially changing North American forests. It is thus critical to understand how wildfires affect forest wildlife, especially for species managed for harvest and for species at risk of extinction. In particular, many…
Author(s): Logan A. Volkmann, Jenna Hutchen, Karen E. Hodges
Year Published:

Forest fires at the wildland-urban interface are generating increasing losses due to the expansion of cities into adjacent forests. At the same time, urban green open spaces are highly valuable as sources of recreational, educational and aesthetic…
Author(s): Yaella Depietri, Daniel E. Orenstein
Year Published:

The objective of this work is to illustrate how to algorithmically integrate Machine-Learning Algorithms (MLA's) with multistage/multicomponent fire spread models. In order to tangibly illustrate this process, this work develops a framework for a…
Author(s): T. J. Zohdi
Year Published:

Increasing temperatures and irregular precipitation associated with climate change, along with increasing frequency and severity of wildfires, contribute to increased downstream transport of sediment and total organic carbon (TOC), with potential…
Author(s): Danielle Loiselle, Xinzhong Du, Daniel S. Alessi, Kevin D. Bladon, Monireh Faramarzi
Year Published:

Recent years have witnessed a growing number of stories about extreme wildfires that have had significant social impacts, from Australia to Portugal to California. Although this has heightened the call to find ways to better “coexist with fire,” it…
Author(s): Sarah M. McCaffrey, Tara K. McGee, Michael R. Coughlan, Fantina Tedim
Year Published:

Field measurements of surface dead fine fuel moisture content (FFMC) are integral to wildfire management, but conventional measurement techniques are limited. Automated fuel sticks offer a potential solution, providing a standardised, continuous and…
Author(s): Jane G. Cawson, Petter Nyman, Christian Schunk, Gary J. Sheridan, Thomas J. Duff, Kelsy E. Gibos, William D. Bovill, Marco Conedera, Gianni B. Pezzatti, Annette Menzel
Year Published:

Sutherland et al. (2020) used simulations from a physics-based numerical fire behaviour model to investigate the effect of the ignition protocol (namely length, direction and rate of ignition) on the spread rates measured in experimental fires. They…
Author(s): Miguel G. Cruz, Andrew L. Sullivan, Rachel Bessell, James S. Gould
Year Published:

Land treatments in wildland-urban interface (WUI) areas are highly visible and subject to public scrutiny and possible opposition. This study examines a contested vegetation treatment-Forsythe II-in a WUI area of the Arapaho-Roosevelt National…
Author(s): Hannah Brenkert-Smith, Jody L. Jahn, Eric A. Vance, Juan Ahumada
Year Published:

Climate change is projected to increase fire severity and frequency in the boreal forest, but it could also directly affect post-fire recruitment processes by impacting seed production, germination, and seedling growth and survival. We reviewed…
Author(s): Dominique Boucher, Sylvie Gauthier, Nelson Thiffault, William Marchand, Martin P. Girardin, Morgane Urli
Year Published:

Drought and warming increasingly are causing widespread tree die-offs and extreme wildfires. Forest managers are struggling to improve anticipatory forest management practices given more frequent, extensive, and severe wildfire and tree die-off…
Author(s): Jason P. Field, David D. Breshears, John Bradford, Darin J. Law, Xiao Feng, Craig D. Allen
Year Published:

Wildfire is a natural component of sagebrush (Artemisia spp.) steppe rangelands that induces temporal shifts in plant community physiognomy, ground surface conditions, and erosion rates. Fire alteration of the vegetation structure and ground cover…
Author(s): Samantha P. Vega, C. Jason Williams, Erin S. Brooks, Frederick B. Pierson, Eva K. Strand, Peter R. Robichaud, Robert E. Brown, Mark S. Seyfried, Kathleen A. Lohse, Kayla Glossner, Jennifer L. Pierce, Clay Roehner
Year Published:

Escape routes keep firefighters safe by providing efficient evacuation pathways from the fire line to safety zones. Effectively utilizing escape routes requires a precise understanding of how much time it will take firefighters to traverse them. To…
Author(s): Patrick R. Sullivan, Michael J. Campbell, Philip E. Dennison, Simon C. Brewer, Bret W. Butler
Year Published: