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Ecosystem

Displaying 2481 - 2500 of 6073 results

Prescribed fires are regulated by states and are always subject to strict air-quality standards. Their use must be planned carefully to keep the smoke they produce at acceptable levels. Managers can predict the direction of smoke plumes by relying…
Author(s): Carrie Berger, Stephen A. Fitzgerald, Daniel Leavell, Janice L. Peterson
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Dead woody material (DWM) plays numerous important roles in forest ecosystems; however, through the process of decomposition, it undergoes structural and chemical changes that progressively alter its function in these roles. Much remains unknown…
Author(s): Shawn Fraver, Mehdi Tajvidi, Anthony W. D'Amato, Daniel I. Lindner, Jodi A. Forrester, Amy M. Milo
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Fire is a dynamic ecological process in forests and impacts the carbon (C) cycle through direct combustion emissions, tree mortality, and by impairing the ability of surviving trees to sequester carbon. While studies on young trees have demonstrated…
Author(s): Aaron M. Sparks, Crystal A. Kolden, Alistair M. S. Smith, Luigi Boschetti, Daniel M. Johnson, Mark A. Cochrane
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Previous reviews of wildfires where a fatal firefighter burnover occurred have found that the incidents usually share similar characteristics in terms of the fire environment, such as steep slopes and complex topography (e.g. box canyons). Despite…
Author(s): Wesley G. Page, Bret W. Butler
Year Published:

The capacity of wildland fire science and technology in Canada is not keeping pace with the growing complexity of wildland fire. Fire seasons are becoming longer, fire events are becoming more severe, and experts predict that the area burned on an…
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The Joint Fire Science Program (JFSP) Fire Science Exchange Network is composed of 15 Exchanges that act as boundary organizations tasked with improving fire science use within their respective regions. A longitudinal survey conducted annually…
Author(s): Lisa D. Maletsky, William P. Evans, Loretta Singletary, Lorie L. Sicafuse
Year Published:

As wildland fires have had increasing negative impacts on a range of human values, in many parts of the United States (U.S.) and around the world, collaborative risk reduction efforts among agencies, homeowners, and fire departments are needed to…
Author(s): Rachel S. Madsen, Hylton J. G. Haynes, Sarah M. McCaffrey
Year Published:

Shifting climates and annual grass invasions have contributed to the increased number and size of fires in the western United States costing millions of dollars in fire suppression and post-fire rehabilitation. Post-fire rehabilitation implements…
Author(s): Beth A. Newingham, Eva K. Strand
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Statistically defensible information on vegetation conditions is needed to guide rangeland management decisions following disturbances such as wildfire, often for heterogeneous pastures. Here we evaluate sampling effort needed to achieve a robust…
Author(s): Cara Applestein, Matthew J. Germino, David S. Pilliod, Matthew R. Fisk, Robert S. Arkle
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The Coanda effect is the phenomenon in which a jet entering quiescent fluid attaches to a nearby solid object due to inhibited entrainment of ambient fluid near the solid. Little is known about the influence of the Coanda effect on wildland fire…
Author(s): Jonathan R. Gallacher, Brad Ripa, Bret W. Butler, Thomas H. Fletcher
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Understanding the impacts of mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins) on fire behavior is important from both an ecological and land management viewpoint. However, numerous uncertainties exist in the linkages of MPB-caused tree…
Author(s): Sharon M. Hood, Robert E. Keane, Helen Y. Smith, Joel M. Egan, Lisa M. Holsinger
Year Published:

Wildfires are increasing in size and severity in forested landscapes across the Western United States. Not only do fires alter land surfaces, but they also affect the surface water quality in downstream systems. Previous studies of individual fires…
Author(s): Ashley J. Rust, Terri S. Hogue, Samuel Saxe, John McCray
Year Published:

The retrospective study of abrupt and sustained increases in the radial growth of trees (hereinafter ‘releases’)b y tree-ring analysis is an approach widely used for reconstructing past forest disturbances. Despite the range of dendrochronological…
Author(s): Volodymyr Trotsiuk, Neil Pederson, Daniel L. Druckenbrod, David A. Orwig, Daniel A. Bishop, Audrey Barker-Plotkin, Shawn Fraver, Dario Martin-Benito
Year Published:

The water balance in a watershed can be disrupted by forest disturbances such as harvests and fires. Techniques to accurately and efficiently map forest cover changes due to disturbance are evolving quickly, and it is of interest to ask how useful…
Author(s): Alexander J. Hernandez, Sean P. Healey, Hongsheng Huang, R. Douglas Ramsey
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This study introduces a large fire containment strategy that builds upon recent advances in spatial fire planning, notably the concept of potential wildland fire operation delineations (PODs). Multiple PODs can be clustered together to form a “box”…
Author(s): Yu Wei, Matthew P. Thompson, Jessica R. Haas, Gregory K. Dillon, Christopher D. O'Connor
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Wildland fire managers in the United States currently utilize the gridded forecasts from the National Digital Forecast Database (NDFD) to make fire behavior predictions across complex landscapes during large wildfires. However, little is known about…
Author(s): Wesley G. Page, Natalie S. Wagenbrenner, Bret W. Butler, Jason M. Forthofer, Chris Gibson
Year Published:

This Species Review covers two varieties of ponderosa pine, Pinus ponderosa var. benthamiana and P. p. var. ponderosa. 'Ponderosa pine' refers to both varieties. Ponderosa pine adapted to dry environments but occupies a wide variety of sites. It…
Author(s): Janet L. Fryer
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Paleofire research is the study of past fire regimes using a suite of proxies (frequency, area burned, severity, intensity, etc.). Charcoal preserved in sedimentary archives constitutes one of the most ubiquitous measures of past fire regimes along…
Author(s): Julie C. Aleman, Andy Hennebelle, Boris Vannière, Olivier Blarquez, Global Paleofire Working Group
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The natural cycle of landscape fire maintains the ecological health of the land, yet adverse health effects associated with exposure to emissions from wildfire produce public health and clinical challenges. Systematic reviews conclude that a…
Author(s): Wayne E. Cascio
Year Published:

Changing climate and increasing area burned pose a challenge to forest carbon (C) storage, which is compounded by an elevated risk of high‐severity wildfire due to long‐term fire suppression in the western US. Restoration treatments that reduce tree…
Author(s): Shuang Liang, Matthew D. Hurteau, Anthony L. Westerling
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