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Ecosystem

Displaying 1181 - 1200 of 5953 results

Wildland firefighters are exposed to smoke-containing particulate matter (PM) and volatile organic compounds (VOCs) while suppressing wildfires. From 2015 to 2017, the U.S. Forest Service conducted a field study collecting breathing zone…
Author(s): Kathleen M. Navarro, Molly West, Katelyn O'Dell, Paro Sen, I-Chen Chen, Emily V. Fischer, Rebecca S. Hornbrook, Eric C. Apel, Alan J. Hills, Alex Jarnot, Paul DeMott, Joseph W. Domitrovich
Year Published:

The fuel packing ratio () significantly influences the fire spread in discrete fuels; however, the underlying mechanism remains unclear. This study performed experiments using laser-cut cardboards with different packing ratios to explore the heat…
Author(s): Qianqian He, Naian Liu, Xiaodong Xie, Linhe Zhang, Yang Zhang, Weidong Yan
Year Published:

As we learn to sustainably coexist with wildfire, there is an urgent need to improve our understanding of its multidimensional impacts on society. To this end, we undertake a nationwide study to estimate how megafires (wildfires > 100,000 acres…
Author(s): Benjamin A. Jones, Shana McDermott
Year Published:

A 30 × 30m-resolution gridded dataset of forest plot identifiers was developed for the conterminous United States (CONUS) using a random forests machine-learning imputation approach. Forest plots from the US Forest Service Forest Inventory and…
Author(s): Karen L. Riley, Isaac C. Grenfell, Mark A. Finney, Jason M. Wiener
Year Published:

here is increasing discussion in the academic and agency literature, as well as popular media, about the need to address the existing deficit of beneficial fire on landscapes. One approach allowable under United States federal wildland fire policy…
Author(s): Stephen D. Fillmore, Sarah M. McCaffrey, Alistair M. S. Smith
Year Published:

Extreme wildfires are a major environmental and socioeconomic threat across many regions worldwide. The limits of fire suppression-centred strategies have become evident even in technologically well-equipped countries, due to high-cost and a legacy…
Author(s): Sven Wunder, David E. Calkin, Val Charlton, Sarah Feder, Inazio Martinez de Arano, Peter F. Moore, Francisco Rodriguez y Silva, Luca Tacconi, Cristina Vega-García
Year Published:

Ongoing changes in fire regimes have the potential to drive widespread shifts in Earth’s vegetation. Plant traits and vital rates provide insight into vulnerability to fire‐driven vegetation shifts because they can be indicators of the ability of…
Author(s): Kyle Rodman, Thomas T. Veblen, Robert A. Andrus, Neal J. Enright, Joseph B. Fontaine, Angela D. Gonzalez, Miranda Redmond, Andreas P. Wion
Year Published:

Identifying meaningful measures of ecological change over large areas is dependent on the quantification of robust relationships between ecological metrics and remote sensing products. Over the past several decades, ground observations of wildfire…
Author(s): Joshua J. Picotte, C. Alina Cansler, Crystal A. Kolden, James A. Lutz, Carl H. Key, Nathan C. Benson, Kevin M. Robertson
Year Published:

Extreme wildfires are a major environmental and socioeconomic threat across many regions worldwide. The limits of fire suppression-centred strategies have become evident even in technologically well-equipped countries, due to high-cost and a legacy…
Author(s): Sven Wunder, David E. Calkin, Val Charlton, Sarah Feder, Inazio Martinez de Arano, Peter F. Moore, Francisco Rodriguez y Silva, Luca Tacconi, Cristina Vega-García
Year Published:

Evacuation is considered by many to be the safest action for residents to take when threatened by a wildfire. However, not all residents agree and evacuate in the face of an approaching wildfire, instead preferring to stay and defend their…
Author(s): Alex W. Kirkpatrick
Year Published:

An automated burned area extraction routine that attempts to overcome the particular difficulties of remote sensing applications in complex landscapes is presented and tested in the mountainous region of northwest Yunnan, China. In particular, the…
Author(s): David Fornacca, Guopeng Ren, Wen Xiao
Year Published:

A new approach to characterize airborne firebrands during Wildland-Urban Interface (WUI) fires is detailed. The approach merges the following two imaging techniques in a single field-deployable diagnostic tool: (1) 3D Particle Tracking Velocimetry (…
Author(s): Nicolas Bouvet, Eric Link, Stephen A. Fink
Year Published:

Airborne fine particulate matter (PM2.5) represents the greatest ambient air pollution risk to health. Wildfires and managed burns, together referred to hereafter as ‘landscape’ fires, are a significant PM2.5 source in many regions worldwide, able…
Author(s): Gareth Roberts, Martin J. Wooster
Year Published:

A combination of bibliometric and science mapping methods was carried out to explore characteristics of scientific production on the application of orbital remote sensing in fire ecology. The performance analyzes made it possible to identify the…
Author(s): Mariana M. M. de Santana, Eduardo Mariano-Neto, Rodrigo N. de Vasconcelos, Pavel Dodonov, José M. M. Medeiros
Year Published:

Climate warming and increased frequency and severity of wildfires have the potential to undermine forest resilience to wildfires. Species demography implies that vegetation responses to fires depend on a series of population filters, including adult…
Author(s): Kyra D. Wolf, Philip E. Higuera, Kimberley T. Davis
Year Published:

Determining whether forest landscapes can maintain their resilience to fire – that is, their ability to rebound and sustain – given rapid climate change and increasing fire activity is a pressing challenge throughout the American West. Many western…
Author(s): Monica G. Turner
Year Published:

Sexual regeneration is increasingly recognized as an important regeneration pathway for aspen in the western U.S., a region previously thought to be too dry for seedling establishment except for during unusually wet periods. Due to this historical…
Author(s): Mark R. Kreider, Larissa L. Yocom
Year Published:

Dead fuel moisture content (DFMC) is a key driver for fire occurrence and is often an important input to many fire simulation models. There are two main approaches to estimating DFMC: empirical and process-based models. The former mainly relies on…
Author(s): Chanquan Fan, Binbin He
Year Published:

With an increase in the frequency and severity of wildfires across the globe and resultant changes to long-established fire regimes, the mapping of fire severity is a vital part of monitoring ecosystem resilience and recovery. The emergence of…
Author(s): Samuel Hillman, Bryan Hally, Luke Wallace, Darren Turner, Arko Lucieer, Karin J. Reinke, Simon D. Jones
Year Published:

Background: Fire suppression and anthropogenic land use have increased severity of wildfire in western U.S. dry conifer forests. Managers use fuels reduction methods (e.g., prescribed fire) to limit high-severity wildfire and restore ecological…
Author(s): Quresh Latif, Victoria A. Saab, Jonathan G. Dudley
Year Published: