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Ecosystem

Displaying 1521 - 1540 of 6066 results

Purpose of Review: Science plays a critical role in natural resource management, and the use of science in decision-making is mandated by several policy initiatives. Other disciplines have documented the challenges associated with applying science…
Author(s): Molly E. Hunter, Melanie M. Colavito, Vita Wright
Year Published:

There has been an increasing interest in the economic health cost from smoke exposure from wildfires in the past 20 years, particularly in the north-western USA that is reflected in an emergent literature. In this review, we provide an overview and…
Author(s): Ruth Dittrich, Stuart McCallum
Year Published:

This study examines 95 lightning-initiated wildfires and 1170 lightning flashes in the western United States between May and October 2017 to characterize lightning and precipitation rates and totals near the time of ignition. Eighty-nine percent of…
Author(s): Brittany R. MacNamara, Christopher J. Schultz, Henry E. Fuelberg
Year Published:

The ‘Balbi model’ is a simplified steady-state physical propagation model for surface fires that considers radiative heat transfer from the surface area of burning fuel particles as well as from the flame body. In this work, a completely new version…
Author(s): Jacques Henri Balbi, François Joseph Chatelon, D. Morvan, Jean Louis Rossi, Thierry Marcelli, Frederic Morandini
Year Published:

The structure and composition of sagebrush‐dominated ecosystems have been altered by changes in fire regimes, land use, invasive species, and climate change. This often decreases resilience to disturbance and degrades critical habitat for species of…
Author(s): Lisa M. Ellsworth, J. Boone Kauffman, Schyler A. Reis, David B. Sapsis, Kendra Moseley
Year Published:

Large conflagrations of informal settlements occur regularly, leaving thousands of people homeless daily and taking tens of thousands of lives annually. Over the past few years, a large amount of data has been collected from a number of full-scale…
Author(s): Antonio Cicione, Lesley Gibson, Colleen Wade, Michael Spearpoint, Richard Walls, David Rush
Year Published:

Aerial Thermal Infrared (TIR) imagery has demonstrated tremendous potential to monitor active forest fires and acquire detailed information about fire behavior. However, aerial video is usually unstable and requires inter-frame registration before…
Author(s): M.M. Valero, Steven Verstockt, Christian Mata, Daniel M. Jimenez, Lloyd P. Queen, O. Rios, Elsa Pastor, Eulalia Planas
Year Published:

This is the first part of two papers concerning fire-spotting generated fires. In this part we deal with the impact of macroscale factors, such as the atmospheric stability, and in the second part we deal with mesoscale factors, such as the flame…
Author(s): Vera N. Egorova, Andrea Trucchia, Gianni Pagnini
Year Published:

A learning-based wildfire spread model was developed in this study to predict short-term wildfire spread. Real-time rate of spread (RoS) measurement was first conducted by calculating normal movements of fire fronts. Subsequently, machine learning…
Author(s): Chunjie Zhai, Siyu Zhang, Zhaolou Cao, Xinmeng Wang
Year Published:

Monitoring ecosystem events such as wildfires with remote sensing is fundamental to natural resources management. However, precisely delineating burned areas with remote sensing remains a challenge for post-fire ecological assessment. Burned area…
Author(s): Kudzai Shaun Mpakairi, Shamiso Lynette Kadzunge, Henry Ndaimani
Year Published:

Recent years have witnessed a growing number of stories about extreme wildfires that have had significant social impacts, from Australia to Portugal to California. Although this has heightened the call to find ways to better “coexist with fire,” it…
Author(s): Sarah M. McCaffrey, Tara K. McGee, Michael R. Coughlan, Fantina Tedim
Year Published:

Field measurements of surface dead fine fuel moisture content (FFMC) are integral to wildfire management, but conventional measurement techniques are limited. Automated fuel sticks offer a potential solution, providing a standardised, continuous and…
Author(s): Jane G. Cawson, Petter Nyman, Christian Schunk, Gary J. Sheridan, Thomas J. Duff, Kelsy E. Gibos, William D. Bovill, Marco Conedera, Gianni B. Pezzatti, Annette Menzel
Year Published:

Several recent studies have documented how fire severity affects the density and spatial patterns of tree regeneration in western North American ponderosa pine forests. However, less is known about the effects of fire severity on fine-scale tree…
Author(s): Suzanne M. Owen, Carolyn Hull Sieg, Peter Z. Fule, Catherine A. Gehring, L. Scott Baggett, Jose M. Iniguez, Paula J. Fornwalt, Michael A. Battaglia
Year Published:

Over the last decades, the different issues regarding the expansion of the wildland-urban interface (WUI) - particularly those related to fires - have spread around the world with particular exposure in the USA, Canada, Australia, and, more recently…
Author(s): A. Bento-Gonçalves, A. Vieira
Year Published:

A new global sensitivity analysis has been conducted of fuel-type-dependent input variables of the simplified physical fire spread model (PhyFire) to understand how the use of spatial averages, that is, fuel models, influences the results of PhyFire…
Author(s): María Isabel Asensio-Sevilla, M. Teresa Santos-Martín, David Álvarez-León, Luis Ferragut-Canals
Year Published:

A systematic visualisation system that can image the visible flame, invisible hot gas and the wood surface temperature, was applied to study self-sustained fire propagation in a wood rod at different inclination angles. It was found that the burned…
Author(s): Yufeng Lai, Xiao Wang, Thomas B.O. Rockett, Jon R. Willmott, Hangxu Zhou, Yang Zhang
Year Published:

Wildfire detection is a time-critical application as the difficulty to pinpoint ignition locations in a short time-frame often leads to the escalation of the severity of fire events. This problem has motivated considerable interest from expert…
Author(s): Maria João Sousa, Alexandra Moutinho, Miguel Almeida
Year Published:

Escape routes keep firefighters safe by providing efficient evacuation pathways from the fire line to safety zones. Effectively utilizing escape routes requires a precise understanding of how much time it will take firefighters to traverse them. To…
Author(s): Patrick R. Sullivan, Michael J. Campbell, Philip E. Dennison, Simon C. Brewer, Bret W. Butler
Year Published:

The first few years of the 21st century brought a series of unprecedented natural disturbances to the southwestern U.S. A severe drought, later tagged as a “global change type drought,” triggered the mortality of 1,000 of native trees. For some…
Author(s): Carolyn Hull Sieg, Rodman Linn, F. Pimont, Chad M. Hoffman, Joel D. McMillin, Judith Winterkamp, L. Scott Baggett
Year Published:

Wildfire increases the potential connectivity of runoff and sediment throughout watersheds due to greater bare soil, runoff and erosion as compared to pre‐fire conditions. This research examines the connectivity of post‐fire runoff and sediment from…
Author(s): Codie Wilson, Stephanie Kampf, Sandra E. Ryan-Burkett, Tim Covino, Lee H. MacDonald, Hunter Gleason
Year Published: