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Ecosystem

Displaying 1441 - 1460 of 5894 results

As the climate warms, drought will increasingly occur under elevated temperatures, placing forest ecosystems at growing risk of extensive dieback and mortality. In some cases, increases in tree density following early 20th-century fire suppression…
Author(s): Alan J. Tepley, Sharon M. Hood, Christopher R. Keyes, Anna Sala
Year Published:

Research Highlights: The effects of fire on birds in the most northern parts of the boreal forest are understudied. We found distinct differences in bird communities with increasing fire severity in two vegetation types with naturally different burn…
Author(s): Michelle Knaggs, Samuel Hache, Scott E. Nielson, Rhiannon F. Pankratz, Erin Bayne
Year Published:

Using a naturalistic quasi-experimental design and growth curve modeling techniques, a recently proposed climate change risk perception model was replicated and extended to investigate changes in climate change risk perception and climate policy…
Author(s): Karine Lacroix, Robert Gifford, Jonathan Rush
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:

Statistical analyses of wildfires demonstrate that vapor pressure deficit (VPD) allows for skillful predictions, likely because it reflects fuel moisture content. Soil moisture provides a potentially complimentary measure of water availability but…
Author(s): Angela J. Ridgen, Robert S. Powell, Aleyda Trevino, Kaighin A. McColl, Peter Huybers
Year Published:

Key points -Wildland firefighters do not wear respiratory protection while working long hours and can be exposed to elevated concentrations of smoke. -There is very limited research on long-term health of wildland firefighters from smoke exposure…
Author(s): Kathleen M. Navarro
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
Year Published:

Trees in dry forests often regenerate in episodic pulses when wet periods coincide with ample seed production. Factors leading to success or failure of regeneration pulses are poorly understood. We investigated the impacts of stand thinning on…
Author(s): Thomas E. Kolb, Kelsey Flathers, John Bradford, Caitlin M. Andrews, Lance A. Asherin, W.K. Moser
Year Published:

Restoration of non-sprouting shrubs after wildfire is increasingly becoming a management priority. In the western U.S., Wyoming big sagebrush (Artemisia tridentata Nutt. ssp. wyomingensis Beetle & Young) restoration is a high priority, but…
Author(s): Kirk W. Davies, Jonathan D. Bates, Chad S. Boyd
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Prescribed burning is an effective method to reduce hazardous fuels and restore ecological conditions across a variety of ecosystems. Twenty-one states have laws or policies that direct state agencies to oversee formal training programs to certify…
Author(s): Megan Matonis
Year Published:

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
Year Published:

Prescribed fire is an important tool for maintaining the resilience of fire-dependent ecosystems. Despite broad recognition of its value, however, prescribed fire application in the western US has not been applied at the necessary levels. Past…
Author(s): Northwest Fire Science Consortium
Year Published:

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:

Fire is an ecological process that also has socio-economic effects. To learn more about fire occurrence, I examined relationships between land classes and about 12,000 spatially delineated large wildfires (defined here as uncontrolled fires _200 ha…
Author(s): Brice B. Hanberry
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
Year Published:

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:

Red Flag Warnings (RFWs) issued by the National Weather Service in the United States (U.S.) are an important early warning system for fire potential based on forecasts of critical fire weather that promote increased fire activity, including the…
Author(s): Josh Clark, John T. Abatzoglou, Nicholas J. Nauslar, Alistair M. S. Smith
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:

One of the most ubiquitous cause of worldwide deforestation and devastation of wildlife is fire. To control fire and reach the forest area in time is not always possible. Consequently, the level of destruction is often high. Therefore, predicting…
Author(s): Richa Sharma, Shalli Rani, Imran Memon
Year Published: