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Displaying 521 - 540 of 5651

Wildfires emit smoke particles and gaseous pollutants that greatly aggravate air quality and cause adverse health impacts in the western US (WUS). This study evaluates how wildfire impacts on air pollutants and air toxics evolve from the present…
Author(s): Cheng-En Yang, Joshua S. Fu, Yongqiang Liu, Xingyi Dong, Yang Liu
Year Published:

The COVID-19 global pandemic created dramatic change in nearly every facet of life, including how the Forest Service worked to fulfill its mission despite facing multiple unknowns fraught with risks. Preparing for and responding to wildland fire…
Author(s): Matthew P. Thompson, Donald G. MacGregor, David E. Calkin, Joel O. Iverson
Year Published:

Night-time provides a critical window for slowing or extinguishing fires owing to the lower temperature and the lower vapour pressure deficit (VPD). However, fire danger is most often assessed based on daytime conditions1,2, capturing what promotes…
Author(s): Jennifer Balch, John T. Abatzoglou, Maxwell B. Joseph, Michael J. Koontz, Adam L. Mahood, Joe McGlinchy, Megan E. Cattau, A. Park Williams
Year Published:

Fire is one of Earth's most potent agents of ecological change. This Special Issue comes in the wake of a series of extreme wildfires across the world, from the Amazon, to Siberia, California, Portugal, South Africa and eastern Australia (Duane et…
Author(s): Dale G. Nimmo, Alan N. Andersen, Sally Archibald, Matthias M. Boer, Lluis Brotons, Catherine L. Parr, Morgan W. Tingley
Year Published:

Representations of fire in the U.S. are often tinged with nostalgia: for unburned landscapes, for less frequent fires, for more predictable fire behavior, or for a simpler, more harmonious relationship between human communities and wildfire. Our…
Author(s): Jennifer Ladino, Leda N. Kobziar, Jack Kredell, Teresa Cavazos Cohn
Year Published:

Wildland fire incident management teams (IMTs) require sustained and coordinated decision-making across levels of authority during dynamic and high-risk events. Trust between team members is important for maintaining the efficient flow of…
Author(s): Claire Rapp, Robyn S. Wilson
Year Published:

We investigated the relative importance of daily fire weather, landscape position, climate, recent forest and fuels management, and fire history to explaining patterns of remotely-sensed burn severity – as measured by the Relativized Burn Ratio – in…
Author(s): C. Alina Cansler, Van R. Kane, Paul F. Hessburg, Jonathan T. Kane, Sean M.A. Jeronimo, James A. Lutz, Nicholas A. Povak, Derek J. Churchill, Andrew J. Larson
Year Published:

Background: Extreme, prolonged wildfire smoke (WFS) events are becoming increasingly frequent phenomena across the Western United States. Rural communities, dependent on contributions of nature to people’s quality of life, are particularly hard hit…
Author(s): Anna Humphreys, Elizabeth Walker, Gregory N. Bratman, Nicole A. Errett
Year Published:

Forests are currently a substantial carbon sink globally. Many climate change mitigation strategies leverage forest preservation and expansion, but rely on forests storing carbon for decades to centuries. Yet climate-driven disturbances pose…
Author(s): Oriana S. Chegwidden, Grayson Badgley, Anna T. Trugman, William R.L. Anderegg, Danny Cullenward, John T. Abatzoglou, Jeffrey A. Hicke, Jeremy Freeman, Joseph J. Hamman
Year Published:

The western U.S. is experiencing increasing wildfire activity and warmer, drier climate conditions, with declining post-fire tree regeneration observed in many areas in recent years. Seedlings of mixed-conifer and subalpine forest species are…
Author(s): Kyra D. Wolf, Kimberley T. Davis, Philip E. Higuera
Year Published:

Since their introduction two decades ago, Community Wildfire Protection Plans (CWPPs) have become a common planning tool for improving community preparedness and risk mitigation in fire-prone regions, and for strengthening coordination among federal…
Author(s): Emily Palsa, Matt Bauer, Cody Evers, Matthew Hamilton, Max W. Nielsen-Pincus
Year Published:

The increasing incidence of wildfires across the southwestern United States (US) is altering the contemporary forest management template within historically frequent-fire conifer forests. An increasing fraction of southwestern conifer forests have…
Author(s): Jens T. Stevens, Collin M. Haffey, Jonathan D. Coop, Paula J. Fornwalt, Larissa L. Yocom, Craig D. Allen, Anne F. Bradley, Owen T. Burney, Dennis Carril, Marin Chambers, Teresa B. Chapman, Sandra L. Haire, Matthew D. Hurteau, Jose M. Iniguez, Ellis Q. Margolis, Christopher Marks, Laura A. Marshall, Kyle Rodman, Camille Stevens-Rumann, Andrea E. Thode, Jessica J. Walker
Year Published:

A 106 acre (43 ha) aspen clone lives in the Fishlake National Forest in south-central Utah. Clones are comprised of multiple aspen stems, called ramets, which are genetically identical. This particular colony of ramets was named “Pando” (Latin for “…
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:

The globe is struggling with concurrent planetary health emergencies: COVID-19 and wildfires worsened by human activity. Unfortunately, a lack of awareness of climate change as a health issue, as well as of the interconnections between biodiversity…
Author(s): Attila J. Hertelendy, Courtney Howard, Roberto de Almeida, Kate Charlesworth, Lwando Maki
Year Published:

Subalpine coniferous forests are adapted to cycles of fire and successional development, but increasing fire frequency and severity are altering historical stand structure, composition, and plant diversity. For instance, conifer regeneration has…
Author(s): Andrew J. Andrade, Diana F. Tomback, Timothy R. Seastedt, Sabine Mellmann-Brown
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:

Recent extreme wildfire seasons in the United States (US) have rekindled policy debates about the underlying drivers and potential role forest management can play in reducing fuels and future wildfire. Most US western national forests face a…
Author(s): Pedro Belavenutti, Woodam Chung, Alan A. Ager
Year Published:

Pyrogenic carbon (PyC) is a ubiquitous legacy of wildfire in terrestrial soils, yet how it affects the growth and function of regenerating plants has received little research attention. We examined responses to a natural gradient of PyC deposition 5…
Author(s): Nigel V. Gale, Sean C. Thomas
Year Published:

Strong and variable winds in thunderstorm outflow boundaries interact with wildland fires, often spreading flames faster to threaten firefighter safety and amplify economical destruction. These boundaries are difficult to detect in complex terrain…
Author(s): Katja Friedrich, Julie Lundquist
Year Published: