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Ecosystem

Displaying 2121 - 2140 of 6038 results

Epidemiologists use prediction models to downscale (i.e., interpolate) air pollution exposure where monitoring data is insufficient. This study compares machine learning prediction models for ground-level ozone during wildfires, evaluating the…
Author(s): Gregory L. Watson, Donatello Telesca, Colleen Reid, Gabriele G. Pfister, Michael Jerrett
Year Published:

Fire regimes are now recognized as the product of social processes whereby fire on any landscape is the product of human-generated drivers: climate change, historical patterns of vegetation manipulation, invasive species, active fire suppression,…
Author(s): Robert M. Scheller, Alec Kretchun, Todd J. Hawbaker, Paul D. Henne
Year Published:

Background: Wildfires, like many disturbances, can be catalysts for ecosystem change. Given projected climate change, tree regeneration declines and ecosystem shifts following severe wildfires are predicted. We reviewed scientific literature on post…
Author(s): Camille Stevens-Rumann, Penelope Morgan
Year Published:

Forests are an incredibly important resource across the globe, yet they are threatened by climate change through stressors such as drought, insect outbreaks, and wildfire. Trailing edge forests-those areas expected to experience range contractions…
Author(s): Sean A. Parks, Solomon Z. Dobrowski, John D. Shaw, Carol Miller
Year Published:

The persistence of wildlife species in fire‐prone ecosystems is under increasing pressure from global change, including alterations in fire regimes caused by climate change. However, unburned islands might act to mitigate negative effects of fire on…
Author(s): Jasper Steenvoorden, Arjan J. H. Meddens, Anthony Martinez, Lee J. Foster, W. Daniel Kissling
Year Published:

Burn probability maps produced by Monte Carlo methods involve repeated simulations of fire ignition and spread across a study area landscape to identify locations that burn more frequently than others. These maps have achieved broad acceptance for…
Author(s): Jennifer L. Beverly, Neal McLoughlin
Year Published:

Soil heating caused by prescribed or wildland fire commonly focuses on a single biological thermal threshold of 60 °C for the duration of one minute to represent organism death. This metric severely misrepresents the heterogeneity of the soil…
Author(s): Melissa R.A. Pingree, Leda N. Kobziar
Year Published:

During 2-5 December 2010, an area of 2500 ha in the Carmel forests was consumed by a severe wildfire, causing soil erosion from the exposed slopes. Whereas most studies show that post-fire erosion rates tend to decline after the second year, in this…
Author(s): Rami Zituni, Lea Wittenberg, Dan Malkinson
Year Published:

Recent prolonged droughts and catastrophic wildfires in the western United States have raised concerns about the potential for forest mortality to impact forest structure, forest ecosystem services, and the economic vitality of communities in the…
Author(s): Polly C. Buotte, Samuel Levis, Beverly E. Law, Tara W. Hudiburg, David E. Rupp, Jeffrey J. Kent
Year Published:

From the front line of the Camp Fire, the deadliest wildfire in California history, NOVA tells the stories of residents who had to flee for their lives during the 2018 fire season. Scientists racing to understand what’s behind the rise of record-…
Author(s):
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Exposure to wildfire smoke is a public health issue of increasing prominence in North America, particularly in western states and provinces. In this study, Aethalometer data collected at six sites in the Lower Fraser Valley (LFV), British Columbia,…
Author(s): Robert M. Healy, Jonathan M. Wang, Uwayemi Sofowote, Yushan Su, Jerzy Debosz, Michael Noble, Anthony Munoz, Cheol-Heon Jeong, Nathan Hilker, Greg J. Evans, Geoff Doerksen
Year Published:

Research Highlights: The impact of variation in fuels and fuel dynamics among forest cover types on the outcome of fuel treatments is poorly understood. This study investigated the potential effects of treatment placement with respect to cover type…
Author(s): Seth A. Ex, Justin P. Ziegler, Wade T. Tinkham, Chad M. Hoffman
Year Published:

Wildfire is the predominant natural disturbance in the boreal forests of western Canada. Natural disturbance-based forest management involves the use of retention harvesting to retain stand structural diversity post-harvest; however, this partial…
Author(s): Caroline Mary Adrianne Franklin, Scott E. Nielsen, S. Ellen Macdonald
Year Published:

The emergence of affordable unmanned aerial systems (UAS) creates new opportunities to study fire behavior and ecosystem pattern-process relationships. A rotor-wing UAS hovering above a fire provides a static, scalable sensing platform that can…
Author(s): Christopher J. Moran, Carl A. Seielstad, Matthew R. Cunningham, Valentijn Hoff, Russell A. Parsons, Lloyd P. Queen, Katie Sauerbrey, Tim Wallace
Year Published:

from text "In the recent manuscript by Collins et al. [1], the authors conclude that the manuscript sample (n = 9) of wildland firefighters (WLFFs) experienced changes in body composition across the 2017 season. However, the authors outline a…
Author(s): Brent Ruby
Year Published:

Fire and herbivory both remove aboveground biomass. Environmental factors determine the type and intensity of these consumers globally, but the traits of plants can also alter their propensity to burn and the degree to which they are eaten. To…
Author(s): Sally Archibald, Gareth P. Hempson, Caroline E. R. Lehmann
Year Published:

This paper provides analysis of international fire service siege wildfire suppression thresholds and reports on the effect of forest fuel structure, fire weather condition and terrain on the suitability of suppression strategies. Further, this study…
Author(s): Greg Penney, Daryoush Habibi, Marcus Cattani
Year Published:

Fuel loads in real-world fire scenarios often feature discrete elements, discontinuities, or inhomogeneities; however, most models for flame spread only assume a continuous, homogeneous fuel. Because discrete fuels represent a realistic scenario not…
Author(s): Jiang Lin, Zhao Zhao, Wei Tang, Colin H. Miller, Jin-Hua Sun, Michael J. Gollner
Year Published:

The extent of young postfire conifer forests is growing throughout western North America as the frequency and size of high‐severity fires increase, making it important to understand ecosystem structure and function in early seral forests.…
Author(s): Monica G. Turner, Timothy G. Whitby, William H. Romme
Year Published:

Purpose of Review: The objectives of this paper are to briefly review basic risk management and analytics concepts, describe their nexus in relation to wildfire response, demonstrate real-world application of analytics to support response decisions…
Author(s): Matthew P. Thompson, Yu Wei, David E. Calkin, Christopher D. O'Connor, Christopher J. Dunn, Nathaniel M. Anderson, John S. Hogland
Year Published: