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Ecosystem

Displaying 2961 - 2980 of 6066 results

Accurate prediction of fire-caused tree mortality is critical for making sound land management decisions such as developing burning prescriptions and post-fire management guidelines. To improve efforts to predict post-fire tree mortality, we…
Author(s): Sharon M. Hood, Duncan C. Lutes
Year Published:

Sagebrush ecosystems are complex and so are the efforts to conserve sage-grouse. Those who own or manage sage-grouse habitat play a critical role in conserving this species in Wyoming, and this guide is intended to provide a concise source of…
Author(s): Leanne L. Correll, Rebecca M. Burton, John Derek Scasta, Jeffrey L. Beck
Year Published:

Emissions of aerosols and gases from fires have been shown to adversely affect US air quality at local to regional scales as well as downwind regions far away from the source. In addition, smoke from fires negatively affects humans, ecosystems, and…
Author(s): Jeffrey R. Pierce, Maria Val Martin, Colette L. Heald
Year Published:

Major declines of whitebark pine forests throughout western North America from the combined effects of mountain pine beetle (Dendroctonus ponderosae) outbreaks, fire exclusion policies, and the exotic disease white pine blister rust (WPBR) have…
Author(s): Robert E. Keane, Lisa M. Holsinger, M. F. Mahalovich, Diana F. Tomback
Year Published:

Severe disturbance such as wildfire may create important opportunities for plant communities to reorganize in response to environmental change, including climate change. Disturbance may be particularly important in forests where the foundational…
Author(s): Derek J. N. Young, Andrew Latimer
Year Published:

In sagebrush (Artemisia tridentata Nutt.) ecosystems, expansion and infilling of conifers decreases the abundance of understory perennial vegetation and lowers ecosystem resilience and resistance of the once shrub grass − dominated state. We…
Author(s): Rachel E. Williams, Bruce A. Roundy, April Hulet, Richard F. Miller, Robin J. Tausch, Jeanne C. Chambers, Jeffrey Matthews, Robert Schooley, Dennis Eggett
Year Published:

Post-wildfire soil erosion can be caused by water or aeolian processes, yet most erosion research has focused on predominantly water-driven erosion. This study investigates the effectiveness of three agricultural mulches, with and without a…
Author(s): Peter R. Robichaud, Jyoti Jennewein, B.S. Sharratt, Sarah A. Lewis, Robert E. Brown
Year Published:

In the interior Pacific Northwest, extensive defoliation of mixed conifer forests during outbreaks of western spruce budworm (WSB) may leave the visual impression of a tinderbox with trees primed to burst into flame. But is this the case? We…
Author(s): Daniel G. Gavin, Aquila Flower, Greg M. Cohn, Russell A. Parsons, Emily K. Heyerdahl
Year Published:

In the wildland-urban interface, the imperative is often to protect life and property from destructive fires, while also conserving biodiversity. One potential tool for achieving this goal is the use of green firebreaks: strips of low flammability…
Author(s): Timothy J. Curran, George L.W. Perry, Sarah V. Wyse, Md Azharul Alam
Year Published:

We modeled the normal fire environment for occurrence of large forest wildfires (>40 ha) for the Pacific Northwest Region of the United States. Large forest wildfire occurrence data from the recent climate normal period (1971–2000) was used as…
Author(s): Raymond J. Davis, Zhiqiang Yang, Andrew Yost, Cole Belongie, Warren B. Cohen
Year Published:

Wildfire evacuation trigger points are prominent geographic features (e.g., ridge lines, rivers, and roads) utilized in timing evacuation warnings. When a fire crosses a feature, an evacuation warning is issued to the communities or firefighters in…
Author(s): Dapeng Li, Thomas J. Cova, Philip E. Dennison
Year Published:

Recent growth in the frequency and severity of US wildfires has led to more wildfire smoke and increased public exposure to harmful air pollutants. Populations exposed to wildfire smoke experience a variety of negative health impacts, imposing…
Author(s): Benjamin A. Jones, Robert P. Berrens
Year Published:

Wildfire is a key disturbance agent in forests worldwide, but recent large and costly fires have raised urgent questions about how different current fire regimes are from those of the past. Dendroecological reconstructions of historical fire…
Author(s): Lori D. Daniels, Larissa L. Yocom Kent, Rosemary L. Sherriff, Emily K. Heyerdahl
Year Published:

Following changes in vegetation structure and pattern, along with a changing climate, large wildfire incidence has increased in forests throughout the western United States. Given this increase, there is great interest in whether fuels treatments…
Author(s): Jamie M. Lydersen, Brandon M. Collins, Matthew L. Brooks, John R. Matchett, Kristen L. Shive, Nicholas A. Povak, Van R. Kane, Douglas F. Smith
Year Published:

Our understanding of how climate and fire have impacted quaking aspen (Populus tremuloides Michx.) communities prior to the 20th century is fairly limited. This study analysed the period between 4500 and 2000 cal. yr BP to assess the pre-historic…
Author(s): Vachel A. Carter, Andrea R. Brunelle, John D. Shaw, Thomas A. Minckley, R. Justin DeRose, Simon C. Brewer
Year Published:

Climate change is expected to result in substantial ecological impacts across the globe. These impacts are uncertain but there is strong consensus that they will almost certainly affect fire regimes and vegetation. In this study, we evaluated how…
Author(s): Sean A. Parks, Lisa M. Holsinger, Carol Miller, Marc-Andre Parisien
Year Published:

Deadwood in forests influences fire intensity, stores carbon and nutrients, and provides wildlife habitat. We used a 54-year-old density management experiment in Larix occidentalis Nutt. forests to evaluate density dependence of woody detritus…
Author(s): Michael S. Schaedel, Andrew J. Larson, Cullen J. Weisbrod, Robert E. Keane
Year Published:

We modeled the normal fire environment for occurrence of large forest wildfires (>40 ha) for the Pacific Northwest Region of the United States. Large forest wildfire occurrence data from the recent climate normal period (1971-2000) was used…
Author(s): Raymond J. Davis, Zhiqiang Yang, Cole Belongie, Warren B. Cohen
Year Published:

Larger, more frequent wildfires in arid and semi- arid ecosystems have been associated with invasion by non- native annual grasses, yet a complete understanding of fine fuel development and subsequent wildfire trends is lacking. We investigated the…
Author(s): David S. Pilliod, Justin L. Welty, Robert S. Arkle
Year Published:

The impacts of wildfires have increased in recent decades because of historical forest and fire management, a rapidly changing climate, and an increasingly populated wildland urban interface. This increasingly complex fire environment highlights the…
Author(s): Christopher J. Dunn, Matthew P. Thompson, David E. Calkin
Year Published: