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Ecosystem

Displaying 1101 - 1120 of 5896 results

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
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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:

Exceptional events occur when air pollution in a specific location exceeds the National Ambient Air Quality Standards (NAAQS) due to an event that cannot be reasonably attributed to human activities, such as a wildland fire. Ground-level ozone (O3)…
Author(s): Liji M. David, A. R. Ravishankara, Steven J. Brey, Emily V. Fischer, John Volckens, Sonia M. Kreidenweis
Year Published:

Fire is a dominant driver of ecosystem patterns and processes across the Rocky Mountains. This chapter describes fire ecology and fire-related management for the major forest types in the Rocky Mountains. Major forest types included are ponderosa…
Author(s): Sharon M. Hood, Brian J. Harvey, Paula J. Fornwalt, Cameron Naficy, Winslow D. Hansen, Kimberley T. Davis, Michael A. Battaglia, Camille Stevens-Rumann, Victoria A. Saab
Year Published:

Exotic annual grass invasion and dominance of rangelands is a concern across western North America and other semiarid and arid ecosystems around the world. Postfire invasion and dominance by exotic annual grasses in sagebrush communities is…
Author(s): Kirk W. Davies, Jonathan D. Bates, Barry Perryman, Sergio Arispe
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:

Implementation of wildfire- and climate-adaptation strategies in seasonally dry forests of western North America is impeded by numerous constraints and uncertainties. After more than a century of resource and land use change, some question the need…
Author(s): R. Keala Hagmann, Paul F. Hessburg, Susan J. Prichard, Nicholas A. Povak, Peter M. Brown, Peter Z. Fule, Robert E. Keane, Eric E. Knapp, Jamie M. Lydersen, Kerry L. Metlen, Matthew J. Reilly, Andrew Sanchez Meador, Scott L. Stephens, Jens T. Stevens, Alan H. Taylor, Larissa L. Yocom, Michael A. Battaglia, Derek J. Churchill, Lori D. Daniels, Donald A. Falk, Paul Henson, James D. Johnston, Meg A. Krawchuk, Carrie R. Levine, Garrett W. Meigs, Andrew G. Merschel, Malcolm P. North, Hugh Safford, Thomas W. Swetnam, Amy E. M. Waltz
Year Published:

Firefighting is a mentally and physically demanding profession which is compounded by poor sleep due to shift schedules commonly used by fire departments. Compared to other professions, firefighters are at high risk for musculoskeletal injuries,…
Author(s): Chris Frost, Mike Toczko, Justin J. Merrigan, Joel R. Martin
Year Published: