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Ecosystem

Displaying 1081 - 1100 of 5893 results

This FEIS species review synthesizes information on the relationship of Lathyrus bijugatus (pinewoods sweetpea) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species…
Author(s): Janet L. Fryer
Year Published:

The idea that not all fire regimes are created equal is a central theme in fire research and conservation. Fire frequency (i.e., temporal scale) is likely the most studied fire regime attribute as it relates to conservation of fireadapted ecosystems…
Author(s): David Mason, Marcus A. Lashley
Year Published:

Because fire retardant can enter streams and harm aquatic species including endangered fish, agencies such as the U.S. Forest Service (USFS) must estimate the downstream extent of toxic effects every time fire retardant enters streams (denoted as an…
Author(s): Chris R. Rehmann, P. Ryan Jackson, Holly J. Puglis
Year Published:

Widespread fire activity taxes suppression resources and can compound wildfire hazards. We examine the geographic synchronicity of fire danger across western United States forests as a proxy for the strain on fire suppression resource availability.…
Author(s): John T. Abatzoglou, Caroline S. Juang, A. Park Williams, Crystal A. Kolden, Anthony L. Westerling
Year Published:

Fire behavior is well described by a fire’s direction, rate of spread, and its energy release rate. Fire intensity as defined by Byram (1959) is the most commonly used term describing fire behavior in the wildfire community. It is, however,…
Author(s): Gernot Ruecker, David Leimbach, Joachim Tiemann
Year Published:

Projected warming of global surface air temperatures will further exacerbate droughts, wildfires, and other agents of ecosystem stress. We use latewood blue intensity from high‐elevation Picea engelmannii to reconstruct late‐summer maximum air…
Author(s): Karen J. Heeter, Maegen L. Rochner, Grant Harley
Year Published:

Questions: Relative to a landscape with a mosaic of two sagebrush community types and increasing fire frequency, we asked: 1) Do vegetation characteristics vary significantly with number of times burned for each sagebrush community? 2) How do…
Author(s): Douglas J. Shinneman, Susan K. McIlroy, Marie-Anne de Graaff
Year Published:

Increased frequency and new types of disturbances caused by global change calls for deepened insights into possible alterations of successional pathways. Despite current interest in disturbance interactions there is a striking lack of studies…
Author(s): Lena Gustafsson, Victor Johansson, Alexandro B. Leverkus, Joachim Strengbom, Sofie Wikberg, Gustaf Granath
Year Published:

In response to large, severe wildfires across the western US, federal initiatives have been enacted to increase the pace, scale, and quality of ecological restoration in fire dependent forests. To address uncertainty and controversy in agreement…
Author(s): Kevin J. Barrett, Jeffery B. Cannon, Alex M. Schuetter, Anthony S. Cheng
Year Published:

Western North American fires have been increasing in magnitude and severity over the last few decades. The complex coupling of fires with the atmospheric energy budget and meteorology creates short-term feedbacks on regional weather altering the…
Author(s): Diana N. Bernstein, Douglas S. Hamilton, Rosalie Krasnoff, Natalie M. Mahowald, David S. Connelly, Simone Tilmes, Peter G. M. Hess
Year Published:

This feature explores topics of enduring ecological concern – fire regimes, climate change, and forest management of the North American West. The authors describe the dual challenges of past forest management legacies and fire exclusion confronted…
Author(s): David S. Schimel, Juan C. Corley
Year Published:

The loading of dissolved organic carbon (DOC) from soils to inland waters and ultimate transport to the ocean is a critical flux pathway in the terrestrial biosphere carbon cycle. Fires can significantly affect this flux through biogeochemical…
Author(s): Xinyuan Wei, Daniel J. Hayes, Ivan Fernandez
Year Published:

Every year, high numbers of firefighters are injured at fire incidents. A primary cause of moderate to severe injury can be linked to the protective garments worn by firefighters and understanding the limits of these protective garments is crucial…
Author(s): Thomas B. B. Clarke, Mark Walker, Frank Mendham
Year Published:

Exposure to wildfire smoke continues to be a growing threat to public health, yet the chemical components in wildfire smoke that primarily drive toxicity and associated disease are largely unknown. This study utilized a suite of computational…
Author(s): Julia E. Rager, Jeliyah Clark, Lauren A. Eaves, Vennela Avula, Nicole M. Niehoff, Yong Ho Kim, Ilona Jaspers, M. Ian Gilmour
Year Published:

Air pollution, particularly fine and ultrafine particulate matter aerosols, underlies a wide range of communicable and non-communicable disease affecting many systems including the cardiopulmonary and immune systems, and arises primarily from…
Author(s): Ira Leifer, Michael T. Kleinman, Donald R. Blake, David Tratt, Charlotte Marston
Year Published:

Strong and variable winds in thunderstorm outflow boundaries interact with wildland fires, often spreading flames faster to threaten firefighter safety and amplify economical destruction. These boundaries are difficult to detect in complex terrain…
Author(s): Katja Friedrich, Julie Lundquist
Year Published:

Fire frequency and severity in southern California and across the western United States is increasing, posing a concern to the safety and well-being of communities and ecosystems. Increased aridity coupled with water stressed vegetation from…
Author(s): Alicia M. Kinoshita, Brenton A. Wilder
Year Published:

Numerous studies have linked outdoor levels of PM2.5, PM10, NO2, O3, SO2, and other air pollutants to significantly higher rates of Covid 19 morbidity and mortality, although the rate in which specific concentrations of pollutants increase Covid 19…
Author(s): Luke Curtis
Year Published:

Smoke, as a prominent character of combustion, is widely regarded as a signal of forest fire. Existing in a video-based smoke root detection methods on rely the distance between smoke and the lens, which is one of the most challenging parts. In…
Author(s): Yu Gao, Pengle Cheng
Year Published:

Recent increases in destructive wildfires are driving a need for empirical research documenting factors that contribute to structure loss. Existing studies show that fire risk is complex and varies geographically, and the role of vegetation has been…
Author(s): Alexandra D. Syphard, Heather Rustigian-Romsos, Jon E. Keeley
Year Published: