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Ecosystem

Displaying 661 - 680 of 6016 results

Forest biological disturbance agents (BDAs) are insects, pathogens, and parasitic plants that affect tree decline, mortality, and forest ecosystems processes. BDAs are commonly thought to increase the likelihood and severity of fire by converting…
Author(s): David C. Shaw, Peter A. Beedlow, E.Henry Lee, David R. Woodruff, Garrett W. Meigs, Stephen J. Calkins, Matthew J. Reilly, Andrew G. Merschel, Steven P. Cline, Randy L. Comeleo
Year Published:

Wildland fires are a major source of gases and aerosols, and the production, dispersion, and transformation of fire emissions have significant ambient air quality impacts and climate interactions. The increase in wildfire area burned and severity…
Author(s): Shawn P. Urbanski, Russell W. Long, Hannah Halliday, Emily Lincoln, Andrew Habel, Matthew S. Landis
Year Published:

Background: Wildland fires are fundamentally landscape phenomena, making it imperative to evaluate wildland fire strategic goals and fuel treatment effectiveness at large spatial and temporal scales. Outside of simulation models, there is limited…
Author(s): Sharon M. Hood, J. Morgan Varner, Theresa B. Jain, Jeffrey M. Kane
Year Published:

As 21st-century climate and fire activity depart from historical baselines, effects on forests are uncertain. Forest managers need to predict and monitor forest recovery and fuel accumulation to anticipate future fire behavior and plan appropriate…
Author(s): Kristin H. Braziunas, Monica G. Turner
Year Published:

Bark beetle outbreaks and wildfires are two of the most prevalent disturbances that influence tree mortality, regeneration, and successional trajectories in western North American forests. Subboreal forests have experienced broad overlaps in these…
Author(s): Anna C. Talucci, Garrett W. Meigs, Anders Knudby, Meg A. Krawchuk
Year Published:

Background: Remotely sensed burned area products are critical to support fire modelling, policy, and management but often require further processing before use. Aim: We calculated fire history metrics from the Landsat Burned Area Product (1984-2020…
Author(s): Melanie K. Vanderhoof, Todd J. Hawbaker, Casey Teske, Joe Nobel, Jim Smith
Year Published:

This review synthesizes the scientific literature on fuel treatment economics published since 2013 with a focus on its implications for land managers and policy makers. We review the literature on whether fuel treatments are financially viable for…
Author(s): Molly E. Hunter, Michael H. Taylor
Year Published:

The biogeochemical signature of fire shapes the functioning of many ecosystems. Fire changes nutrient cycles not only by volatilizing plant material, but also by altering organic matter decomposition—a process regulated by soil extracellular enzyme…
Author(s): Yong Zhou, Arielle Biro, Michelle Y. Wong, Sarah A. Batterman, A. Carla Staver
Year Published:

Postfire recovery of fire-adapted forests remains uncertain as climate and fire regimes continue to change. Areas of poor postfire tree regeneration following late-20th-century fires may reveal characteristics associated with increased vulnerability…
Author(s): Nathan G. Kiel, Monica G. Turner
Year Published:

Smouldering peat fires are responsible for regional haze episodes and cause environmental, social and health crises. Owing to the unique burning characteristics of smouldering peat, identifying and detecting this kind of fire remains a challenge.…
Author(s): Yuqi Hu, Guillermo Rein
Year Published:

Background Advances in fire modeling help quantify and map various components and characterizations of wildfire risk and furthermore help evaluate the ability of fuel treatments to mitigate risk. However, a need remains for guidance in designing…
Author(s): Matthew P. Thompson, Kevin C. Vogler, Joe H. Scott, Carol Miller
Year Published:

Almost half of all Americans (45 percent) reported that their lives were affected a lot by COVID-19 pandemic conditions in 2020 and experienced a lot of worry and stress on a daily basis (Gallup, Inc. 2021). Nevertheless, even more said that they…
Author(s): Emily Haire
Year Published:

We examined the financial efficiency and effectiveness of landscape versus community protection fuel treatments to reduce structure exposure and loss to wildfire on a large fire-prone area of central Idaho (USA). The study area contained 63,707…
Author(s): Fermin Alcasena-Urdiroz, Alan A. Ager, Pedro Belavenutti, Meg A. Krawchuk, Michelle A. Day
Year Published:

Negative imagery of destruction may induce or inhibit action to reduce risks from climate-exacerbated hazards, such as wildfires. This has generated conflicting assumptions among experts who communicate with homeowners: half of surveyed wildfire…
Author(s): Hilary Byerly Flint, Patricia A. Champ, James R. Meldrum, Hannah Brenkert-Smith
Year Published:

The fire-exotic annual grass cycle is a severe threat to shrub-steppe rangelands, and a greater understanding of how livestock grazing relates to the problem is needed to guide effective management interventions. Grazing effects vary throughout…
Author(s): Christopher R. Anthony, Matthew J. Germino
Year Published:

Accurate assessment of burn severity is a critical need for an improved understanding of fire behavior and ecology and effective post-fire management. Although NASA Landsat satellites have a long history of use for remotely sensed mapping of burn…
Author(s): Alexander A. Howe, Sean A. Parks, Brian J. Harvey, Saba Saberi, James A. Lutz, Larissa L. Yocom
Year Published:

The number and size of wildfires in the western United States have increased dramatically in the last 30 years. The rising cost of wildfire suppression has become a significant concern for all levels of government, although most attention has been…
Author(s): Chelsea P. McIver, Philip S. Cook, Dennis Becker
Year Published:

Forests mitigate climate change by sequestering massive amounts of carbon, but recent increases in wildfire activity are threatening carbon storage. Currently, our understanding of wildfire impacts on forest resilience and the mechanisms controlling…
Author(s): Kelsey N. Bryant, Jeffrey E. Stenzel, Justin Mathias, Hyojung Kwon, Crystal A. Kolden, Laurel Lynch, Tara W. Hudiburg
Year Published:

Wildfires are a perennial event globally, and the biogeochemical underpinnings of soil responses at relevant spatial and temporal scales are unclear. Soil biogeochemical processes regulate plant growth and nutrient losses that affect water quality,…
Author(s): Alexander S. Honeyman, Timothy S. Fegel, Henry F. Peel, Nicole A. Masters, David C. Vuono, William Kleiber, Charles C. Rhoades, John R. Spear
Year Published:

Remotely piloted aircraft systems (RPAS) are providing fresh perspectives for the remote sensing of fire. One opportunity is mapping tree crown scorch following fires, which can support science and management. This proof-of-concept shows that crown…
Author(s): Christopher J. Moran, Valentijn Hoff, Russell A. Parsons, Lloyd P. Queen, Carl A. Seielstad
Year Published: