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Ecosystem

Displaying 261 - 280 of 5896 results

Wildfires in forested ecosystems are increasing in severity and extent. The adaptations many plants have acquired in response to their natural fire regime may not be sufficient to allow some species to persist. This could impact the forest…
Author(s): Emily Duivenvoorden, Benjamin Wagner, Craig R. Nitschke, Sabine Kasel
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Quaking aspen (Populus tremuloides Michx.) stands throughout the western United States provide valuable ecosystem services but can be lost via succession from aspen to conifer. Forest managers are cutting conifers, but disposal of cut wood can be…
Author(s): John-Pascal Berrill, Christa M. Dagley, Yoon G. Kim, J. Morgan Varner
Year Published:

Fuel treatments are commonly applied to increase resilience to wildfire in dry and historically frequent-fire forests of western North America. The long-term effects of fuel treatments on forest structure, fuel profiles (amount and configuration of…
Author(s): Don C. Radcliffe, Jonathan D. Bakker, Derek J. Churchill, Ernesto Alvarado, David L. Peterson, Madison M. Laughlin, Brian J. Harvey
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Background The record number of wildfires in the United States in recent years has led to an increased focus on developing tools to accurately forecast their impacts at high spatial and temporal resolutions. Aims The Warn-on-Forecast System for…
Author(s): Thomas Jones, Ravan Ahmadov, Eric James, Gabriel Pereira, Saulo Freitas, Georg Grell
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Background: The global human footprint has fundamentally altered wildfire regimes, creating serious consequences for human health, biodiversity, and climate. However, it remains difficult to project how long-term interactions among land use,…
Author(s): Sayedeh Sara Sayedi
Year Published:

Background: The capacity of forest fuel treatments to moderate the behavior and severity of subsequent wildfires depends on weather and fuel conditions at the time of burning. However, in-depth evaluations of how treatments perform are limited…
Author(s): Emily G. Brodie, Eric E. Knapp, Wesley R. Brooks, Stacy Drury, Martin W. Ritchie
Year Published:

Background: A clear understanding of the connectivity, structure, and composition of wildland fuels is essential for effective wildfire management. However, fuel typing and mapping are challenging owing to a broad diversity of fuel conditions and…
Author(s): Jennifer N. Baron, Paul F. Hessburg, Marc-Andre Parisien, Gregory A. Greene, Sarah E. Gergel, Lori D. Daniels
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Background: Wildland firefighters are likely to experience heightened risks to safety, health, and overall well-being as changing climates increase the frequency and intensity of exposure to natural hazards. Working at the intersection of natural…
Author(s): M. Bryan Held, Miranda Rose Ragland, Sage Wood, Amelia Pearson, Seth W. Pearson, Olivia Chenevert, Rachel M. Granberg, Robin M. Verble
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With climate change and the ever-drier climate, the issue of wildfires is becoming increasingly prominent, generating growing interest in the study of wildfires. The majority of the ongoing research is focused on surface wildland fuels with…
Author(s): Nikola Misic, Milan Protic, Artemi Cerda, Miomir Raos, Milan Blagojević
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Firebrand ignition of wildland fuels is an important pathway of initiation and propagation of wildland and wildland-urban interface fires. The ambient wind plays an important role in smouldering ignition of wildland fuels by firebrands, but its…
Author(s): Wei Fang, Jiuling Yang, Hiaxiang Chen, Linhe Zhang, Pengcheng Guo, Yukui Yuan
Year Published:

Following the destructive Lahaina Fire in Hawaii, our team has modeled the wind and fire spread processes to understand the drivers of this devastating event. The results are in good agreement with observations recorded during the event. Extreme…
Author(s): Timothy W. Juliano, Fernando Szasdi-Bardales, Neil P. Lareau, Kasra Shamsaei, Branko Kosović, Negar Elhami-Khorasani, Eric P. James, Hamed Ebrahimian
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Wildfire risk is increasing all over the world, particularly in the western United States and the communities in wildland-urban interface (WUI) areas are at the greatest risk of fire. Understanding the driving behavior of individuals to evacuate…
Author(s):
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Fire whirls cause strong wind damage in large outdoor fires such as wildland fires and urban fires. A model to predict the maximum tangential wind velocity in laboratory-scale fire whirls without flames in a crosswind is developed based on a…
Author(s): Masahiko Shinohara
Year Published:

n the Western US, area burned and fire size have increased due to the influences of climate change, long-term fire suppression leading to higher fuel loads, and increased ignitions. However, evidence is less conclusive about increases in fire…
Author(s): Rutherford Vance Platt, Teresa B. Chapman, Jennifer Balch
Year Published:

One of the primary tools used for determining the origin of a wildfire is analyzing burn patterns formed during the fire progression. These patterns, called fire pattern indicators, are interpreted and used to document the direction of fire movement…
Author(s): Keith Parker, Vytenis Babrauskas
Year Published:

Sagebrush shrublands in the Great Basin, USA, are experiencing widespread increases in wildfire size and area burned resulting in new policies and funding to implement fuel treatments. However, we lack the spatial data needed to optimize the types…
Author(s): Jeanne C. Chambers, Jessi L. Brown, Matthew C. Reeves, Eva K. Strand, Lisa M. Ellsworth, Claire Tortorelli, Alexandra K. Urza, Karen C. Short
Year Published:

Wildland fire incident commanders make wildfire response decisions within an increasingly complex socio-environmental context. Threats to human safety and property, along with public pressures and agency cultures, often lead commanders to emphasize…
Author(s): Molly C. Daniels, Kristin H. Braziunas, Monica G. Turner, Ting-Fung Ma, Karen C. Short, Adena R. Rissman
Year Published:

This paper presents a unique 15-year dataset of Incident Management Situation Reports (IMSR), which document daily wildland fire situations across ten geographical regions in the United States. The IMSR dataset includes summaries for each reported…
Author(s): Dung Tuan Nguyen, Erin J. Belval, Yu Wei, Karen C. Short, David E. Calkin
Year Published:

Public agencies and organizations often deliver financial assistance through cost sharing, in which recipients contribute some portion toward total costs. However, cost sharing might raise equity concerns if it reduces participation among…
Author(s): James R. Meldrum, Patricia A. Champ, Hannah Brenkert-Smith, Christopher M. Barth, Abby E. McConnell, Carolyn Wagner, Colleen Donovan
Year Published:

Fuel and restoration treatments seeking to mitigate the likelihood of uncharacteristic high-severity wildfires in forests with historically frequent, low-severity fire regimes are increasingly common, but long-term treatment effects on fuels,…
Author(s): Sharon M. Hood, Justin S. Crotteau, Cory Cleveland
Year Published: