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Ecosystem

Displaying 2621 - 2640 of 5960 results

Social science offers rich descriptions of relationships between wildland–urban interface residents and wildfire, but syntheses across different contexts might gloss over important differences. We investigate the potential extent of such differences…
Author(s): James R. Meldrum, Hannah Brenkert-Smith, Patricia A. Champ, Lilia C. Falk, Pamela Wilson, Christopher M. Barth
Year Published:

Accordingly, the average annual risk of a wildfire destroying a home in the WUI was less than 1 onehundredth of 1 percent. Of course, the risk is much higher in fire-prone parts of the South and West, but so are expectations that government…
Author(s): Hutch Brown
Year Published:

Laboratory and field experiments focused on pyrolysis and ignition coupled with sufficient description of fuel characteristics and physics-based modeling are being used to improve our understanding of combustion processes in mixed (heterogeneous)…
Author(s): David R. Weise, Thomas H. Fletcher, Timothy J. Johnson, Wei Min Hao, Mark Dietenberger, M. Princevac, Bret W. Butler, Sara S. McAllister, Joseph O’Brien, E. Louise Loudermilk, Roger D. Ottmar, Andrew T. Hudak, Akira Kato, Babak Shotorban, Shankar M. Mahalingam, William E. Mell
Year Published:

Factors affecting wildland-fire size distribution include weather, fuels, and fire suppression activities. We present a novel application of survival analysis to quantify the effects of these factors on a sample of sizes of lightning-caused fires…
Author(s): Piers-Olivier Tremblay, Thierry Duchesne, Steve G. Cumming
Year Published:

The NWCG Smoke Management Guide for Prescribed Fire contains information on prescribed fire smoke management techniques, air quality regulations, smoke monitoring, modeling, communication, public perception of prescribed fire and smoke, climate…
Author(s): Janice L. Peterson, Peter Lahm, Mark Fitch, Michael H. George, Dennis V. Haddow, Mark A. Melvin, Joshua C. Hyde, Ellen Eberhardt
Year Published:

Soils are an important natural capital and can be negatively affected by high severity fires. The capacity of soil to recover from the degradation caused by fire disturbance depends on fire history, ash properties, topography, post-fire weather,…
Author(s): Paulo Pereira, Marcos Francos, Eric C. Brevik, Xavier Ubeda, Igor Bogunovic
Year Published:

Abundant stocks of woody biomass that are associated with active forest management can be used as fuel for bioenergy in many applications. Though factors driving large-scale biomass use in industrial settings have been studied extensively, small-…
Author(s): Jesse Young, Nathaniel Anderson, Helen T. Naughton, Katrina Mullan
Year Published:

Large wildfires with uncharacteristically high severity are occurring more frequently in western U.S. forests. The increasing size and severity of wildfires has been attributed to both an increase in weather conducive to fire spread and changes to…
Author(s): Brandon M. Collins, Jamie M. Lydersen, Van R. Kane, Nicholas A. Povak, Matthew L. Brooks, Douglas F. Smith
Year Published:

Mastication is the process of chipping or shredding components of the tree canopy or above-ground vegetation to reduce the canopy, alter fire spread rates, and reduce crown fire potential. Mastication as a fuel treatment, either alone or in…
Author(s): Faith A. Heinsch, Pamela G. Sikkink, Helen Y. Smith, Molly L. Retzlaff
Year Published:

Structurally diverse forests provide resilience to an array of disturbances and are a mainstay of multiple-resource management. Silviculture based on natural disturbance can increase structural heterogeneity while providing other ecological and…
Author(s): Justin S. Crotteau, Christopher R. Keyes, Sharon M. Hood, Andrew J. Larson, Elaine Kennedy Sutherland, David K. Wright, Joel M. Egan
Year Published:

People have inhabited the Northern Rocky Mountains of the United States since the close of the last Pleistocene glacial period, some 14,000 years B.P. (Fagan 1990; Meltzer 2009). Evidence of this ancient and more recent human occupation is found…
Author(s): Carl M. Davis
Year Published:

Wildland fires are generally classified into three categories: ground fires, surface fires, and crown fires (Fig. 1). Soils are described worldwide by the various layers that have formed or been deposited on top of bedrock or other parent material.…
Author(s): David R. Weise, J. Cobian-Iniguez, M. Princevac
Year Published:

This study proposes an explanation for textual performance grounded in communicative relationality. Specifically, genre is theorized as a form of textual agency whereby generic texts and organizational actors form agential-performative relationships…
Author(s): Jody L. Jahn
Year Published:

Large fires account for the majority of burned area and are an important focus of fire management. However, ‘large’ is typically defined by a fire size threshold, minimizing the importance of proportionally large fires in less fire-prone ecoregions…
Author(s): R. Chelsea Nagy, Emily J. Fusco, Bethany A. Bradley, John T. Abatzoglou, Jennifer Balch
Year Published:

Today’s extended fire seasons and large fire footprints have prompted state and federal land-management agencies to devote increasingly large portions of their budgets to wildfire management. As fire costs continue to rise, timely and comprehensive…
Author(s): William Toombs, Keith T. Weber, Tesa Stegner, John L. Schnase, Eric Lindquist, Frances Lippitt
Year Published:

The lightning-ignited Lolo Peak fire in the Selway-Bitterroot Wilderness was discovered on July 12, 2017, burning in an area of high tree mortality and rugged terrain. During the field trip, which was held as part of the May 2018 Fire Continuum…
Author(s): Linda Mutch
Year Published:

A newer generation of models that interactively couple the atmosphere with fire behavior have shown an increased potential to understand and predict complex, rapidly changing fire behavior. This is possible if they capture intricate, time-varying…
Author(s): Janice L. Coen
Year Published:

To test the hypothesis that wildfire smoke can cool summer river and stream water temperatures by attenuating solar radiation and air temperature, we analyzed data on summer wildfire smoke, solar radiation, air temperatures, precipitation, river…
Author(s): Aaron T. David, J. Eli Asarian, Frank K. Lake
Year Published:

Throughout much of the 20th century, the heights of young quaking aspen (Populus tremuloides) in Yellowstone National Park’s northern ungulate winter range were suppressed due to intensive herbivory by Rocky Mountain elk (Cervus elaphus). However,…
Author(s): Robert L. Beschta, Luke E. Painter, William J. Ripple
Year Published:

Wildfire increases the likelihood of runoff, erosion, and downstream sedimentation in many of the watersheds that supply water for Colorado’s Front Range communities. The objectives of this study were to: (1) identify rainfall intensity thresholds…
Author(s): Codie Wilson, Stephanie Kampf, Joseph W. Wagenbrenner, Lee H. MacDonald
Year Published: