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Displaying 101 - 120 of 186

In the case of ongoing wildfire events, timely information on current fire parameters is crucial for informed decision making. Satellite imagery can provide valuable information in this regard, since thermal sensors can detect the exact location and…
Author(s): Michael Nolde, Simon Plank, Torsten Riedlinger
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:

Assessing wildfire risk presents several challenges due to uncertainty in fuel flammability and ignition potential. Live fuel moisture content (LFMC) - the mass of water per unit dry biomass in vegetation - exerts a direct control on fuel…
Author(s): Krishna Rao, A. Park Williams, Jacqueline Fortin Flefil, Alexandra G. Konings
Year Published:

We compare the use of post-fire aerial imagery to ground-based assessment for identifying building destruction and damage at the 2012 Colorado Waldo Canyon Fire. We also compare active-fire defensive actions identified via manual and automated post-…
Author(s): Derek McNamara, William E. Mell, Alexander Maranghides
Year Published:

Methods to accurately estimate spatially explicit fuel consumption are needed because consumption relates directly to fire behavior, effects, and smoke emissions. Our objective was to quantify sparkleberry (Vaccinium arboretum Marshall) shrub fuels…
Author(s): Andrew T. Hudak, Akira Kato, Benjamin C. Bright, E. Louise Loudermilk, Christie M. Hawley, Joseph C. Restaino, Roger D. Ottmar, Gabriel A. Prata, Carlos Cabo, Susan J. Prichard, Eric Rowell, David R. Weise
Year Published:

Site-specific information concerning fuel hazard characteristics is needed to support wildfire management interventions and fuel hazard reduction programs. Currently, routine visual assessments provide subjective information, with the resulting…
Author(s): Luke Wallace, Bryan Hally, Samuel Hillman, Simon D. Jones, Karin J. Reinke
Year Published:

Wildfire, a natural part of many ecosystems, has also resulted in significant disasters impacting ecology and human life in Australia. This study proposes a prototype of fire propagation prediction as an extension of preceding research; this system…
Author(s): Mitsuhiro Ozaki, Jagannath Aryal, Paul Fox-Hughes
Year Published:

Species distribution models (SDMs) that rely on regional‐scale environmental variables will play a key role in forecasting species occurrence in the face of climate change. However, in the Anthropocene, a number of local‐scale anthropogenic…
Author(s): Juan M. Requena-Mullor, Kaitlin C. Maguire, Douglas J. Shinneman, T. Trevor Caughlin
Year Published:

As forest fire activity increases worldwide, it is important to track changing patterns of burn severity (i.e., degree of fire‐caused ecological change). Satellite data provide critical information across space and time, yet how satellite indices…
Author(s): Brian J. Harvey, Robert A. Andrus, Sean C. Anderson
Year Published:

Simulations of wildland fire risk are dependent on the accuracy and relevance of spatial data inputs describing drivers of wildland fire, including canopy fuels. Spatial data are freely available at national and regional levels. However, the spatial…
Author(s): Peder S. Engelstad, Michael J. Falkowski, Peter T. Wolter, Aaron J. Poznanovic, Patty Johnson
Year Published:

Across the world, millions of hectares of forest are burned by wildfires each year. Satellite remote sensing, particularly when used in time series, can describe complex disturbance‐recovery processes, but is underutilized by ecologists. This study…
Author(s): Samuel Hislop, Simon D. Jones, Mariela Soto-Berelov, Andrew K. Skidmore, Andrew Haywood, Trung H. Nguyen
Year Published:

We mapped yearly (2000–2016) estimates of annual grass percent cover for much of the sagebrush ecosystem of the western United States using remotely sensed, climate, and geophysical data in regression-tree models. Annual grasses senesce and cure by…
Author(s): Stephen P. Boyte, Bruce K. Wylie, Donald J. Major
Year Published:

Fire has a diverse range of impacts on Earth's physical and social systems. Accurate and up to date information on areas affected by fire is critical to better understand drivers of fire activity, as well as its relevance for biogeochemical cycles,…
Author(s): Emilio Chuvieco, Florent Mouillot, Guido R. Van der Werf, Jesus San Miguel, Mihai A. Tanase, Nikos Koutsias, Mariano Garcia, Marta Yebra, Marc Padilla, Ioannis Z. Gitas, Angelika Heil, Todd J. Hawbaker, Louis Giglio
Year Published:

Satellite-derived spectral indices such as the relativized burn ratio (RBR) allow fire severity maps to be produced in a relatively straightforward manner across multiple fires and broad spatial extents. These indices often have strong relationships…
Author(s): Sean A. Parks, Lisa M. Holsinger, Michael J. Koontz, Luke Collins, Ellen Whitman, Marc-Andre Parisien, Rachel A. Loehman, Jennifer L. Barnes, Jean-François Bourdon, Jonathan Boucher, Yan Boucher, Anthony C. Caprio, Adam Collingwood, Ronald J. Hall, Jane Park, Lisa B. Saperstein, Charlotte Smetanka, Rebecca J. Smith, Nicholas O. Soverel
Year Published:

Background: Few studies have examined post-fire vegetation recovery in temperate forest ecosystems with Landsat time series analysis. We analyzed time series of Normalized Burn Ratio (NBR) derived from LandTrendr spectral-temporal segmentation…
Author(s): Benjamin C. Bright, Andrew T. Hudak, Robert E. Kennedy, Justin D. Braaten, Azad Henareh Khalyani
Year Published:

Understanding the factors that influence vegetation responses to disturbance is important because vegetation is the foundation of food resources, wildlife habitat, and ecosystem properties and processes. We integrated vegetation cover data derived…
Author(s): Brittany S. Barker, David S. Pilliod, Matthew Rigge, Collin Homer
Year Published:

Fire severity mapping is conventionally accomplished through the interpretation of aerial photography or the analysis of moderate- to coarse-spatial-resolution pre- and post-fire satellite imagery. Although these methods are well established, there…
Author(s): Jeremy Arkin, Nicholas C. Coops, Txomin Hermosilla, Lori D. Daniels, Andrew Plowright
Year Published:

Recent shifts in global forest area highlight the importance of understanding the causes and consequences of forest change. To examine the influence of several potential drivers of forest cover change, we used supervised classifications of…
Author(s): Kyle Rodman, Thomas T. Veblen, Sara Saraceni, Teresa B. Chapman
Year Published:

Annual Land Use and Land Cover (LULC) maps are needed to identify the interaction between landscape changes and wildland fires. Objectives: In this work, we determined fire hazard changes in a representative Mediterranean landscape through the…
Author(s): Natalia Quintero, Olga Viedma, Itziar R. Urbieta, José M. Moreno
Year Published:

After wildfire, hillslope and channel erosion produce large amounts of sediment and can contribute significantly to long‐term erosion rates. However, pre‐erosion high‐resolution topographic data (e.g. lidar) is often not available and determining…
Author(s): Nicholas G. Ellett, Jennifer L. Pierce, Nancy F. Glenn
Year Published: