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Ecosystem

Displaying 2201 - 2220 of 5960 results

Large amounts of carbon are stored in northern peatlands. There is concern that greater wildfire severity following projected increases in summer drought will lead to higher post-fire carbon losses. We measured soil carbon dynamics in a Calluna…
Author(s): Roger Grau-Andrés, Alan Gray, G. Matt Davies, E. Marian Scott, Susan Waldron
Year Published:

Like many of us at the Forest Service, I started my career in fire, and I have always relied on Smokey Bear. Fire prevention is part of our cultural DNA. It started with Gifford Pinchot, the first Forest Service Chief. In his 1905 Use Book for line…
Author(s): Vicki Christiansen
Year Published:

We have read Cruz and Alexander’s comments regarding our manuscript titled ‘‘Evaluating Crown Fire Rate of Spread Predictions from Physics-Based Models’’ [1] and appreciate the opportunity to respond to their comments. In our original manuscript [1…
Author(s): Chad M. Hoffman, J. Ziegler, R. R. Linn, J. Canfield, W. Mell, Carolyn Hull Sieg, F. Pimont
Year Published:

Wildland firefighter fatalities are not caused by one single factor. Catastrophic fires are on the rise, civilian and firefighter deaths are on the rise, particularly volunteer firefighters. The WUI is growing at a faster pace than ever recorded and…
Author(s): Anjeleeca M. Tomayko
Year Published:

Iron oxides are important pedogenic Cr(III)-bearing phases which experience high-temperature alteration via fire-induced heating of surface soil. In this study, we examine if heating-induced alteration of Cr(III)-substituted Fe oxides can…
Author(s): Edward D. Burton, Girish Choppala, Niloofar Karimian, Scott G. Johnston
Year Published:

Biomass burning is a major source of atmospheric particulate matter (PM) with impacts on health, climate, and air quality. The particles and vapors within biomass burning plumes undergo chemical and physical aging as they are transported downwind.…
Author(s): Anna L. Hodshire, Ali Akherati, Matthew J. Alvarado, Benjamin Brown-Steiner, Shantanu H. Jathar, Jose L. Jimenez, Sonia M. Kreidenweis, Chantelle R. Lonsdale, Timothy B. Onasch, Amber M. Ortega, Jeffrey R. Pierce
Year Published:

Wildfire has been a constant presence on the Earth since at least the Silurian period, and is a landscape-scale catalyst that results in a step-change perturbation for hydrologic systems, which ripples across burned terrain, shaping the geomorphic…
Author(s): Francis K. Rengers
Year Published:

Accurately modeling the duration and extent of soil heating from prescribed fires and wildfires is vital to predicting many second-order fire effects, including development of soil hydrophobicity and other biological, chemical, and physical effects…
Author(s): Peter R. Robichaud, William J. Massman, Anthony S. Bova, Antonio Girona-García, Mathew Lesiecki
Year Published:

Although there is convincing scientific research for the role of Indigenous fire practices in sustainable land management, Indigenous peoples' involvement in policy-making is limited. This paper presents findings from a fire management workshop…
Author(s): Bibiana A. Bilbao, Jayalaxshmi Mistry, Adriana Millán, Andrea Berardi
Year Published:

Resilience has become a common goal for science-based natural resource management, particularly in the context of changing climate and disturbance regimes. Integrating varying perspectives and definitions of resilience is a complex and often…
Author(s): Philip E. Higuera, Alexander L. Metcalf, Carol Miller, Brian Buma, Dave McWethy, Elizabeth C. Metcalf, Zak Ratjczak, Cara R. Nelson, Brian C. Chaffin, Richard C. Stedman, Sarah M. McCaffrey, Tania L. Schoennagel, Brian J. Harvey, Sharon M. Hood, Courtney Schultz, Anne E. Black, Dave Campbell, Julia H. Haggerty, Robert E. Keane, Meg A. Krawchuk, Judith C. Kulig, Rebekah Rafferty, Arika Virapongse
Year Published:

The current mountain pine beetle (MPB; Dendroctonus ponderosae Hopkins, 1902) outbreak has reached more than 25 million hectares of forests in North America, affecting pine species throughout the region and substantially changing landscapes. However…
Author(s): Julian Wittische, Jasmine K. Janes, Patrick M.A. James
Year Published:

Fuel treatments are designed with multiple management goals, including improving suppression capacity and restoring the historical structure of dry forests. Fuelbreaks are a class of fuel treatment that remove fuels within a wide strip of land, with…
Author(s): Maureen C. Kennedy, Morris C. Johnson, Kendra Fallon, Deborah Mayer
Year Published:

Understanding the factors that influence vegetation responses to disturbance is important because vegetation is the foundation of food resources, wildlife habitat, and ecosystem properties and processes. We integrated vegetation cover data derived…
Author(s): Brittany S. Barker, David S. Pilliod, Matthew Rigge, Collin Homer
Year Published:

We investigated the spatial-temporal patterns of spruce budworm (Choristoneura fumiferana (Clem.); SBW) defoliation within 57 plots over 5 years during the current SBW outbreak in Québec. Although spatial-temporal variability of SBW defoliation has…
Author(s): Mingke Li, David A. MacLean, Chris R. Hennigar, Jae Ogilvie
Year Published:

We studied the impacts of climate variability on low‐elevation forests in the U.S. northern Rocky Mountains by quantifying how post‐fire tree regeneration and radial growth varied with growing‐season climate. We reconstructed post‐fire regeneration…
Author(s): Lacey Hankin, Philip E. Higuera, Kimberley T. Davis, Solomon Z. Dobrowski
Year Published:

A two-dimensional three-phase mathematical model of forest fires constructed by the method of averaging over the height of the forest fuel layer is considered. The gas phase in the model is described by gas dynamics equations with the k − ε…
Author(s): Andrey A. Kuleshov, Elena E. Myshetskaya, Sergey E. Yakush
Year Published:

As forest fire activity increases worldwide, it is important to track changing patterns of burn severity (i.e., degree of fire‐caused ecological change). Satellite data provide critical information across space and time, yet how satellite indices…
Author(s): Brian J. Harvey, Robert A. Andrus, Sean C. Anderson
Year Published:

Like many of us at the Forest Service, I started my career in fire, and I have always relied on Smokey Bear. Fire prevention is part of our cultural DNA.
Author(s): Vicki Christiansen
Year Published:

In subalpine forests of the western United States that historically experienced infrequent, high‐severity fire, whether fire management can shape 21st‐century fire regimes and forest dynamics to meet natural resource objectives is not known. Managed…
Author(s): Winslow D. Hansen, Diane Abendroth, Werner Rammer, Rupert Seidl, Monica G. Turner
Year Published:

Many nonlinear phenomena, whose numerical simulation is not straightforward, depend on a set of parameters in a way which is not easy to predict beforehand. Wildland fires in presence of strong winds fall into this category, also due to the…
Author(s): Andrea Trucchia, Vera N. Egorova, Gianni Pagnini, M. C. Rochoux
Year Published: