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Ecosystem

Displaying 1741 - 1760 of 6067 results

Leader-and-follower behaviour is one of the most important behaviours during evacuation, as determining the effect of leader-and-follower behaviour in social networks on crowd evacuation during emergency situations is important for enhancing safety…
Author(s): Ning Ding, Chang Sun
Year Published:

Regulation of building standards and residential development practices in the wildland-urban interface (WUI) is increasingly advocated as a possible avenue for wildfire risk reduction. However, many documented instances of successful wildfire…
Author(s): Catrin Edgeley, Travis B. Paveglio, Daniel R. Williams
Year Published:

Climate change is transforming forest structure and function by altering the timing, frequency, intensity, and spatial extent of episodic disturbances. Wildland fire regimes in western U.S. coniferous forests are now characterized by longer fire…
Author(s): Elizabeth R. Pansing, Diana F. Tomback, Michael B. Wunder
Year Published:

Determining the age of natural conifer regeneration following wildfires is crucial to understanding ecological trajectories and predicting post-fire effects in conifer forests. However, traditional methods of determining seedling age via growth ring…
Author(s): Eva K. Strand, Darcy H. Hammond
Year Published:

The regular and consistent measurements provided by Earth observation satellites can support the monitoring and reporting of forest indicators. Although substantial scientific literature espouses the capabilities of satellites in this area, the…
Author(s): Samuel Hislop, Andrew Haywood, Simon D. Jones, Mariela Soto-Berelov, Andrew K. Skidmore, Trung H. Nguyen
Year Published:

Wildfire events have been impacting many parts of the United States. Of particular importance are the Wildland-Urban Interface (WUI) areas, where residential development exposes residents to increased risk from the threat of wildfire. However,…
Author(s): Benjamin Ghasemi, Gerard T. Kyle, James D. Absher
Year Published:

One goal of fuels treatments is to limit potential fire behavior by reducing overstory tree density, but this may precipitate regeneration, which contributes to increasing potential fire behavior over time. To understand factors that influence tree…
Author(s): Kathleen Fialko, Seth A. Ex, Brett Wolk
Year Published:

Air quality impacts from wildfires have been dramatic in recent years, with millions of people exposed to elevated and sometimes hazardous fine particulate matter (PM 2.5 ) concentrations for extended periods. Fires emit particulate matter (PM) and…
Author(s): Daniel A. Jaffe, Susan M. O'Neill, Narasimhan K. Larkin, Amara L. Holder, David L. Peterson, Jessica E. Halofsky, Ana G. Rappold
Year Published:

Globally, savanna ecosystems are shifting outside of “safe operating spaces” due to removal of their primary self-reinforcing feedback—fire—and subsequent erosion of disturbance legacies. Restoring savannas will require reinstating fire feedbacks.…
Author(s): Caleb P. Roberts, Victoria M. Donovan, Sarah M. Nodskov, Emma C. Keele, Craig D. Allen, David A. Wedin, Dirac Twidwell
Year Published:

Scholars, politicians, practitioners, and civil society increasingly call for sustainability transformations to cope with urgent social and environmental challenges. In sustainability transformations research, understandings of transformations are…
Author(s): David P. M. Lam, Elvira Hinz, Daniel J. Lang, Maria Tengö, Henrik von Wehrden, Berta Martín-López
Year Published:

As the fire research community develops multi-scale models to predict the spread of wildland fires, there is a need for well-controlled, small-scale experiments which provide benchmark data and fundamental understanding of the effects of key…
Author(s): A. S. Makowiecki, J. E. Steinbrenner, N. T. Wimer, J. F. Glusman, C. B. Lapointe, J. W. Daily, Peter E. Hamlington, G. B. Rieker
Year Published:

Aims: Wildfires in dry forest ecosystems in western North America are producing fire effects that are more severe than historical estimates, raising concerns about the resilience of these landscapes to contemporary disturbances. Despite increasing…
Author(s): William M. Downing, Meg A. Krawchuk, Jonathan D. Coop, Garrett W. Meigs, Sandra L. Haire, Ryan B. Walker, Ellen Whitman, Geneva W. Chong, Carol Miller, Claire Tortorelli
Year Published:

Coupled fire-atmospheric modeling tools are increasingly used to understand the complex and dynamic behavior of wildland fires. Multiple research tools linking combustion to fluid flow use Navier-Stokes numerical solutions coupled to a thermodynamic…
Author(s): Rodman Linn, Scott L. Goodrick, Sara Brambilla, Martin J. Brown, R. S. Middleton, Joseph J. O'Brien, J. Kevin Hiers
Year Published:

Understanding the detailed physical and social context surrounding wildfire and WUI fire fatalities is crucial in terms of ensuring effective emergency management policy and practice. Studies of fatalities over prolonged periods ensure changing…
Author(s): Katharine Haynes, Karen C. Short, Gavriil Xanthopoulos, Domingos Xavier Viegas, Luís M. Ribeiro, Raphaele M. Blanchi
Year Published:

In the present experiment we evaluated the impact of rapid heat stress on decision-making and neural function. Previous work has demonstrated that heat stress has an impact on cognitive and neural function. Here, we hypothesized that a rapid…
Author(s): Cory J. Coehoorn, Lynneth A. Stuart-Hill, Wande Abimbola, J. Patrick Neary, Olave E. Krigolson
Year Published:

Municipal firefighters count on their protective garments to avoid skin burns caused by thermal and flame exposures. Typical firefighting garment consists of three layers of different fire-resistant fabrics named as outer shell, moisture barrier and…
Author(s): Ahmed Ghazy
Year Published:

Local and regional species extirpations may become more common as changing climate and disturbance regimes accelerate species’ in situ range contractions. Identifying locations that function as both climate and disturbance refugia is critical for…
Author(s): William M. Downing, James D. Johnston, Meg A. Krawchuk, Andrew G. Merschel, Joseph H. Rausch
Year Published:

Smoke emissions from wildland fires contribute to concentrations of atmospheric particulate matter and greenhouse gases, influencing public health and climate. Prediction of emissions is critical for smoke management to mitigate the effects on…
Author(s): Maureen C. Kennedy, Susan J. Prichard, Donald McKenzie, Nancy H. F. French
Year Published:

The Wildfire Research Center (WiRe Center) works with wildfire practitioners seeking to create communities that are adapted to wildfire using an evidenced-based approach. Historically, immediate threats and wildfire suppression have garnered much…
Author(s): Hannah Brenkert-Smith, Patricia A. Champ, Jonathan Riley, Christopher M. Barth, Colleen Donovan, James R. Meldrum, Carolyn Wagner
Year Published:

A new burner is presented, designed to generate laminar and axisymmetric diffusion flames from wildland fuels. This burner consists of a porous sample holder where wildland fuel elements are deposited. The sample holder is mounted on a cylindrical…
Author(s): G. Severino, A. Cabrera, J. Contreras, P. Pinto, J.J. Cruz, A. Fuentes
Year Published: