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Ecosystem

Displaying 1141 - 1160 of 6072 results

As the need for wildfire adaptation for human populations in the wildland-urban interface (WUI) intensifies in the face of changes that have increased the number of wildfires that exceed 100 thousand acres, it is becoming more important to come to a…
Author(s): Mark Billings, Matthew S. Carroll, Travis B. Paveglio, Kara Whitman
Year Published:

Following the 2020 wildfires in Australia an extremely large amount of smoke entered the stratosphere and was dispersed throughout the southern hemisphere stratosphere. However, the pathway and entry point of the smoke into the stratosphere and the…
Author(s): Leehi Magaritz-Ronen, Shira Raveh-Rubin
Year Published:

The purpose of this study was to investigate the merging behavior of small-scale buoyant flames that might be representative of flames from a leaf in a shrub. Zirconia felt pads soaked in n-heptane were suspended on thin rods and spaced both…
Author(s): Thomas H. Fletcher, Denver Haycock, Seth Tollefsen, David O. Lignell
Year Published:

While fire is an important ecological process in the western United States, wildfire size and severity have increased over recent decades as a result of climate change, historical fire suppression, and lack of adequate fuels management. Due to the…
Author(s): Lisa Patrick Bentley, Brieanne Forbes
Year Published:

A typographical error in the original version of Table S1 as posted in 2012 has been brought to our attention. The coefficient in the Thomas (1963) equation (0.02665) is correct but the exponent should have read 0.667 and not 0.46. Any calculations…
Author(s): Martin E. Alexander, Miguel G. Cruz
Year Published:

Fire and fuel management is a high priority in North American sagebrush ecosystems where the expansion of piñon and juniper trees and the invasion of nonnative annual grasses are altering fire regimes and resulting in loss of sagebrush species and…
Author(s): Jeanne C. Chambers, Alexandra K. Urza, David Board, Richard F. Miller, David A. Pyke, Bruce A. Roundy, Eugene Schupp, Robin J. Tausch
Year Published:

Wildfire is increasing in frequency and size in the western United States with climate change and invasive species such as cheatgrass. This increase is also causing an increase in the need for restoration techniques, especially in low-elevation,…
Author(s): Madeline N. Grant-Hoffman, Heidi L. Plank
Year Published:

Across the globe, aircraft that apply water and suppressants during active wildfires play key roles in wildfire suppression, and these suppression resources can be highly effective. In the United States, US Department of Agriculture Forest Service (…
Author(s): Crystal S. Stonesifer, David E. Calkin, Matthew P. Thompson, Erin J. Belval
Year Published:

Wildfires are occurring more frequently and with greater severity domestically and around the globe. Across a series of studies, researchers at the University of Idaho set out to identify how and when climate variability affects wildfire frequency…
Author(s): Alex W. Kirkpatrick
Year Published:

Fire ecology has a long history of empirical investigation in rangelands. However, the science is inconclusive and incomplete, sparking increasing interest on how to advance the discipline. Here, we introduce a new framework for qualitatively and…
Author(s): Dirac Twidwell, Christine H. Bielski, Rheinhardt Scholtz, Samuel D. Fuhlendorf
Year Published:

Large, high‐severity wildfires are an important component of disturbance regimes around the world and can influence the structure and function of forest ecosystems. Climatic changes and anthropogenic disturbances have altered global disturbance…
Author(s): Elle J. Bowd, David Blair, David B. Lindenmayer
Year Published:

Emissions from a stand replacement prescribed burn were sampled using an unmanned aircraft system (UAS, or 'drone') in Fishlake National Forest, Utah, U.S.A. Sixteen flights over three days in June 2019 provided emission factors for a broad range of…
Author(s): Johanna Aurell, Brian K. Gullett, Amara L. Holder, F. Kiros, William Mitchell, Adam C. Watts, Roger D. Ottmar
Year Published:

Whitebark pine (WBP; Pinus albicaulis) is a critical keystone species of U.S. Northern Rocky Mountain subalpine ecosystems. There is growing concern that WBP may be eliminated from its current habitat over the next century due to cumulative impacts…
Author(s): Nickolas E. Kichas
Year Published:

Recent dramatic and deadly increases in global wildfire activity have increased attention on the causes of wildfires, their consequences, and how risk from wildfire might be mitigated. Here we bring together data on the changing risk and societal…
Author(s): Marshall Burke, Anne Driscoll, Sam Heft-Neal, Jiani Xue, Jennifer Burney, Michael Wara
Year Published:

Although increasing concern about climate change has raised awareness of the fundamental role of forest ecosystems, forests are threatened by human-induced impacts worldwide. Among them, wildfire risk is clearly the result of the interaction between…
Author(s): Ingrid Vigna, Angelo Besana, Elena Comino, Alessandro Pezzoli
Year Published:

Wildland fire activity and associated emission of particulate matter air pollution is increasing in the United States over the last two decades due primarily to a combination of increased temperature, drought, and historically high forest fuel…
Author(s): Jonathan Krug, Russell W. Long, Maribel Colón, Andrew Habel, Shawn P. Urbanski, Matthew S. Landis
Year Published:

The director of West Region Wildfire Council stood before council for the Town of Mountain Village in southwest Colorado with community social data in hand. Over the course of the next hour, Lilia Falk presented key points that refuted the dominant…
Author(s): Patricia A. Champ, Christopher M. Barth, Hannah Brenkert-Smith, Lilia C. Falk, Jamie Gomez, James R. Meldrum
Year Published:

A significant amount of research has examined what motivates people living in fire-prone areas to mitigate their wildfire risk (i.e. engage in activities that reduce vulnerability and the effects of a wildfire on an individual’s property). However,…
Author(s): Hugh D. Walpole, Sarah M. McCaffrey, Claire Rapp, Robyn S. Wilson
Year Published:

Background: Weather plays an integral role in fire management due to the direct and indirect effects it has on fire behavior. However, fire managers may not use all information available to them during the decision-making process, instead utilizing…
Author(s): Claire Rapp, Robyn S. Wilson, Eric L. Toman, William Matt Jolly
Year Published:

Atmospheric forcing and interactions between the fire and atmosphere are primary drivers of wildland fire behavior. The atmosphere is known to be a chaotic system that, although deterministic, is very sensitive to small perturbations to initial…
Author(s): Alexandra K. Jonko, Kara M. Yedinak, Juliana L. Conley, Rodman Linn
Year Published: