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Ecosystem

Displaying 1761 - 1780 of 6068 results

Disturbance refugia – locations that experience less severe or frequent disturbances than the surrounding landscape – provide a framework to highlight not only where and why these biological legacies persist as adjacent areas change but also the…
Author(s): Meg A. Krawchuk, Garrett W. Meigs, Jennifer Cartwright, Jonathan D. Coop, Raymond J. Davis, Andrés Holz, Crystal A. Kolden, Arjan J. H. Meddens
Year Published:

The scope of wildfires over the previous decade has brought these natural hazards to the forefront of risk management. Wildfires threaten human health, safety, and property, and there is a need for comprehensive and readily usable wildfire…
Author(s): Cory W. Ott, Bishrant Adhikari, Simon P. Alexander, Paddington Hodza, Chen Xu, Thomas A. Minckley
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Previous estimates of greenhouse gas emissions from Australian savanna fires have incorporated on-ground dead wood but ignored standing dead trees. However, research from eucalypt woodlands in southern Queensland has shown that the two pools of dead…
Author(s): Garry D. Cook, Adam C. Liedloff, Carl P. Meyer, Anna E. Richards, Steven G. Bray
Year Published:

Studies of the chemical composition of atmospheric aerosols, rain water and snow in various regions of the globe quite often show the presence of pyridine and a number of its low mass derivatives. Nevertheless, the sources of those compounds in the…
Author(s): Dmitry S. Kosyakov, Nikolay V. Ul'yanovskii, Tomas B. Latkin, Sergey A. Pokryshkin, Valeria R. Berzhonskis, Olga V. Polyakova, Albert T. Lebedev
Year Published:

Recent decades have witnessed an escalation in the social, economic, and ecological impacts of wildfires worldwide. Wildfire losses stem from the complex interplay of social and ecological forces at multiple scales, including global climate change,…
Author(s): Ronald L. Schumann, Miranda H. Mockrin, Alexandra D. Syphard, Joshua Whittaker, Owen F. Price, Cassandra Johnson-Gaither, Christopher T. Emrich, Van Butsic
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As wildfire seasons have expanded in duration and intensity, the effort and dedication required of wildland firefighters have increased (Withen 2015). Firefighters now work from April, when fuels first become available for burning, until well into…
Author(s): Ben McLane
Year Published:

Wildfires can have severe and lasting impacts on the water quality of aquatic ecosystems. However, our understanding of these impacts is founded primarily from studies of small watersheds with well-connected runoff regimes. Despite the predominance…
Author(s): Craig A. Emmerton, Colin A. Cooke, Sarah Hustins, Uldis Silins, Monica B. Emelko, Ted Lewis, Mary K. Kruk, Nadine Taube, Dongnan Zhu, Brian Jackson, Micheal Stone, Jason G. Kerr, John F. Orwin
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The Fire Continuum Conference, co-sponsored by the Association for Fire Ecology and the International Association of Wildland Fire, was designed to cover both the biophysical and human dimensions aspects of fire along the fire continuum. This…
Author(s): Sharon M. Hood, Stacy Drury, Toddi A. Steelman, Ron Steffens
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Aim: Over the past several decades, wildfires have become larger, more frequent, and/or more severe in many areas. Simultaneously, anthropogenic ignitions are steadily growing. We have little understanding of how increasing anthropogenic ignitions…
Author(s): Megan E. Cattau, Carol A. Wessman, Adam L. Mahood, Jennifer Balch
Year Published:

Historically open oak and pine savannas and woodlands have transitioned to closed forests comprised of increased numbers of tree species throughout the eastern United States. We reviewed evidence for and against a suite of previously postulated…
Author(s): Brice B. Hanberry, Marc D. Abrams, Mary A. Arthur, J. Morgan Varner
Year Published:

The relationship between wildland fire spread rate and wind has been a topic of study for over a century, but few laboratory studies report measurements in controlled winds exceeding 5 m s−1. In this study, measurements of fire rate of spread, flame…
Author(s): Bret W. Butler, Steve Quarles, Christine Standohar-Alfano, Murray Morrison, Daniel M. Jimenez, Paul Sopko, Cyle E. Wold, Larry S. Bradshaw, Loren Atwood, Justin Landon, Joseph J. O'Brien, Benjamin Hornsby, Natalie S. Wagenbrenner, Wesley G. Page
Year Published:

In the southern hemisphere summer of 2019–20, Australia experienced its most severe bushfire season on record. Smoke from fires affected 80% of the population, with large and prolonged exceedances of the Australian National Air Quality Standard for…
Author(s): Sharon L. Campbell, Penelope J. Jones, Grant J. Williamson, Amanda J. Wheeler, Christopher Lucani, David M. J. S. Bowman, Fay H. Johnston
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Field studies that investigate sediment transport between debris‐flow producing headwaters and rivers are uncommon, particularly in forested settings, where debris flows are infrequent and opportunities for collecting data are limited. This study…
Author(s): Petter Nyman, Walter A.C. Box, Justin C. Stout, Gary J. Sheridan, Saskia D. Keesstra, Patrick N. J. Lane, Christoph Langhans
Year Published:

Research Highlights: This experiment compares a range of combinations of harvest, prescribed fire, and wildfire. Leveraging a 30-year-old forest management-driven experiment, we explored the recovery of woody species composition, regeneration of the…
Author(s): R. Kasten Dumroese, Martin F. Jurgensen, Deborah S. Page-Dumroese
Year Published:

Edaphic (i.e. soil dwelling) microarthropods play crucial roles in soil ecosystem services. Fire is a widespread form of disturbance with severe effects on soil invertebrates. Research on the effects of fire on soil arthropods, however, has been…
Author(s): Cristina Mantoni, Michele Di Musciano, Simone Fattorini
Year Published:

Significance: Wildfire emissions in the western United States have had increasingly larger impacts on air quality, health, and climate forcing in recent decades. However, our understanding of how wildfire plume composition evolves remains incomplete…
Author(s): Brett B. Palm, Qiaoyun Peng, Carley D. Fredrickson, Ben H. Lee, Lauren A. Garofalo, Matson A. Pothier, Sonia M. Kreidenweis, Delphine K. Farmer, Rudra P. Pokhrel, Yingjie Shen, Shane M. Murphy, Wade Permar, Lu Hu, Teresa L. Campos, Samuel R. Hall, Kirk Ullmann, Xuan Zhang, Frank Flocke, Emily V. Fischer, Joel A. Thornton
Year Published:

Prescribed fire is a vital tool for mitigating wildfire hazard and restoring ecosystems in many western North American forest types. However, there can be considerable variability in fuel consumption from prescribed burns, which affects both hazard…
Author(s): Jacob I. Levine, Brandon M. Collins, Robert A. York, Daniel E. Foster, Danny L. Fry, Scott L. Stephens
Year Published:

In subalpine forests of the western United States that historically experienced infrequent, high‐severity fire, whether fire management can shape 21st‐century fire regimes and forest dynamics to meet natural resource objectives is not known. Managed…
Author(s): Winslow D. Hansen, Diane Abendroth, Werner Rammer, Rupert Seidl, Monica G. Turner
Year Published:

Firebrands are a leading cause of ignitionat the wildland urban interface and a driver of rapid fire spread during wildfires. Current studies which seek to evaluate this risk are limited by a paucity of data relating to the firebrand dynamics from…
Author(s): Rory Hadden
Year Published:

Large and severe wildfires are an observable consequence of an increasingly arid American West. There is increasing consensus that human communities, land managers, and fire managers need to adapt and learn to live with wildfires. However, a myriad…
Author(s): Christopher J. Dunn, Christopher D. O'Connor, Jesse Abrams, Matthew P. Thompson, David E. Calkin, James D. Johnstone, Richard D. Stratton, Julie W. Gilbertson-Day
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