Search by keywords, or use filters to narrow down results by type, topic, or ecosystem.

Document Type

Topic

Ecosystem

Displaying 2221 - 2240 of 6068 results

For wildland firefighters, the ability to efficiently evacuate the fireline is limited by terrain, vegetation, and fire conditions. The impacts of terrain and vegetation on evacuation time to a safety zone may not be apparent when considering…
Author(s): Michael J. Campbell, Wesley G. Page, Philip E. Dennison, Bret W. Butler
Year Published:

Subalpine forests in the northern Rocky Mountains have been resilient to stand-replacing fires that historically burned at 100- to 300-year intervals. Fire intervals are projected to decline drastically as climate warms, and forests that reburn…
Author(s): Monica G. Turner, Kristin H. Braziunas, Winslow D. Hansen, Brian J. Harvey
Year Published:

Background:Short-term post-fire field studies have shown that native shrub cover in chaparral ecosystems negatively affects introduced cover, which is influenced by burn severity, elevation, aspect, and climate. Using the southern California 2003…
Author(s): April G. Smith, Beth A. Newingham, Andrew T. Hudak, Benjamin C. Bright
Year Published:

Background Fuel treatments are widely used to alter fuels in forested ecosystems to mitigate wildfire behavior and effects. However, few studies have examined long-term ecological effects of interacting fuel treatments (commercial harvests, pre-…
Author(s): Jessie M. Dodge, Eva K. Strand, Andrew T. Hudak, Benjamin C. Bright, Darcy H. Hammond, Beth A. Newingham
Year Published:

Fire is a necessary ecosystem process in many biomes and is best viewed as a natural disturbance that is beneficial to ecosystem functioning. However, increasingly, we are seeing human interference in fire regimes that alters the historical range of…
Author(s): Jon E. Keeley, Juli G. Pausas
Year Published:

A modelling framework to spatially score the impacts from wildland fire effects on specific resources and assets was developed for and applied to the province of Ontario, Canada. This impact model represents the potential ‘loss’, which can be used…
Author(s): Colin B. McFayden, Den Boychuk, Douglas G. Woolford, Melanie J. Wheatley, Lynn Johnston
Year Published:

Robust tree regeneration following high‐severity wildfire is key to the resilience of subalpine and boreal forests, and 21st century climate could initiate abrupt change in forests if postfire temperature and soil moisture become less suitable for…
Author(s): Winslow D. Hansen, Monica G. Turner
Year Published:

Western juniper occurs in the Pacific Northwest, California, and Nevada. Old-growth western juniper stands that established in presettlement times (before the 1870s) occur primarily on sites of low productivity such as claypan soils, rimrock,…
Author(s): Janet L. Fryer, D. A. Tirmenstein
Year Published:

Under conditions of increased fire season length and area affected by fire, stocks of carbon stored in forests are at increased risk of burning. While much research has investigated the immediate loss of above ground and below ground carbon stocks…
Author(s): E. Stirling, Lynne M. Macdonald, Ron J. Smernik, T. R. Cavagnaro
Year Published:

High severity stand-replacing wildfires can deeply affect forest ecosystems whose composition includes plant species lacking fire-related traits and specific adaptations. Land managers and policymakers need to be aware of the importance of properly…
Author(s): Enrico Marcolin, Raffaella Marzano, Alessandro Vitali, Matteo Garbarino, Emanuele Lingua
Year Published:

These proceedings summarize the results of a symposium designed to address current issues of agencies with wildland fire protection responsibility at the federal and state levels in the United States as well as agencies in the international…
Author(s): Armando Gonzalez-Caban, José J. Sánchez
Year Published:

Mulching with forest residues has proved to be highly effective in reducing post‐fire soil losses at the plot scale. However, its effectiveness has not been quantified at the application rates that are typically used in operational post‐fire land…
Author(s): Sergio A. Prats, Oscar González-Pelayo, Flávio C. Silva, K. J. Bokhorst, J. E. M. Baartman, Jan J. Keizer
Year Published:

We report a fine scale assessment of cross-boundary wildfire events for the western US. We used simulation modeling to quantify the extent of fire exchange among major federal, state, and private land tenures and mapped locations where fire…
Author(s): Palaiologos Palaiologou, Alan A. Ager, Cody Evers, Max W. Nielsen-Pincus, Michelle A. Day, Haiganoush K. Preisler
Year Published:

Background: Surface fuel loadings are some of the most important factors contributing to fire intensity and fire spread. In old-growth forests where fire has been long excluded, surface fuel loadings can be high and can include woody debris ≥100 cm…
Author(s): C. Alina Cansler, Mark E. Swanson, Tucker J. Furniss, Andrew J. Larson, James A. Lutz
Year Published:

The estimated cost of fire in the United States is about $329 billion a year, yet there are gaps in the literature to measure the effectiveness of investment and to allocate resources optimally in fire protection. This article fills these gaps by…
Author(s): Adam Behrendt, Vineet M. Payyappalli, Jun Zhuang
Year Published:

Improved predictions of tree species mortality and growth metrics following fires are important to assess fire impacts on forest succession, and ultimately forest growth and yield. Recent studies have shown that North American conifers exhibit a '…
Author(s): Wade D. Steady, Raquel Partelli Feltrin, Daniel M. Johnson, Aaron M. Sparks, Crystal A. Kolden, Alan F. Talhelm, James A. Lutz, Luigi Boschetti, Andrew T. Hudak, Andrew S. Nelson, Alistair M. S. Smith
Year Published:

Natural disturbances are critical for supporting biodiversity in many ecosystems, but subsequent management actions can influence the quality of habitat that follow these events. Post-disturbance salvage logging has negative consequences on certain…
Author(s): Sara M. Galbraith, James H. Cane, Andrew R. Moldenke, James W. Rivers
Year Published:

One of the first significant developments in wildfire modeling research was to introduce heat flux as wildfire line intensity (kW·m–1). This idea could be adapted to using weather station measurements, topography, and fuel properties to estimate…
Author(s): A. Bakhshaii, E. A. Johnson
Year Published:

This synthesis reviews current knowledge of pinyon and juniper ecosystems, in both persistent and newly expanded woodlands, for managers, researchers, and the interested public. We draw from a large volume of research papers to centralize…
Author(s): Richard F. Miller, Jeanne C. Chambers, Louisa Evers, C. Jason Williams, Keirith A. Snyder, Bruce A. Roundy, Frederick B. Pierson
Year Published:

Wildfires can drastically alter belowground processes such as organic matter (OM) decomposition. We used wood stakes of two different tree species, trembling aspen (Populus tremuloides Michx.) and loblolly pine (Pinus taeda L.), placed at three soil…
Author(s): Deborah S. Page-Dumroese, Martin F. Jurgensen, Chris A. Miller, James B. Pickens, Joanne M. Tirocke
Year Published: