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Ecosystem

Displaying 1781 - 1800 of 6073 results

Runoff increases after wildfires that burn vegetation and create a condition of soil-water repellence (SWR). A new post-fire watershed hydrological model, PFHydro, was created to explicitly simulate vegetation interception and SWR effects for four…
Author(s): Jun Wang, Michelle A. Stern, Vanessa M. King, Charles N. Alpers, Nigel W.T. Quinn, Alan L. Flint, Lorraine E. Flint
Year Published:

Globally, fire regimes are being altered by changing climatic conditions. New fire regimes have the potential to drive species extinctions and cause ecosystem state changes, with a range of consequences for ecosystem services. Despite the co-…
Author(s): Rachael H. Nolan, Chris J. Blackman, Víctor Resco de Dios, Brendan Choat, Belinda Medlyn, Ximeng Li, Ross A. Bradstock, Matthias M. Boer
Year Published:

Environmental decision-making requires an understanding of complex interacting systems across scales of space and time. A range of statistical methods, evaluation frameworks and modeling approaches have been applied for conducting structured…
Author(s): Trent D. Penman, Brett Cirulis, Bruce G. Marcot
Year Published:

Abrupt changes in wind direction and speed can dramatically impact wildfire development and spread. Most importantly, such changes can pose significant problems to firefighting efforts and have resulted in a number of fire fatalities over the years…
Author(s): Jordan G. Powers, Jim Bresch, Craig S. Schwartz, Janice L. Coen, Ryan A. Sobash
Year Published:

Policy approaches to rangelandfiremanagement may be most effective if they seek to utilize a full suite of options, including promoting the social and economic wellbeing of working ranches. One avenue for this includesthe administration of federal…
Author(s): Dennis Becker, Chloe B. Wardropper, Katherine Wollstein
Year Published:

Indigenous fire management is experiencing a resurgence worldwide. Northern Australia is the world leader in Indigenous savanna burning, delivering social, cultural, environmental and economic benefits. In 2016, a greenhouse gas abatement fire…
Author(s): Michelle McKemey, Emilie Ens, Yugul Mangi Rangers, Oliver Costello, Nick Reid
Year Published:

Fire exclusion has dramatically altered historically fire adapted forests across western North America. In response, forest managers reduce forest fuels with mechanical thinning and/or prescribed burning to alter fire behavior, with additional…
Author(s): Harold S. Zald, Becky K. Kerns, Michelle A. Day
Year Published:

The fire radiative power (FRP) of active fires (AFs) is routinely assessed with spaceborne sensors. MODIS is commonly used, and its 1 km nadir pixel size provides a minimum per-pixel FRP detection limit of ~5-8 MW, leading to undercounting of AF…
Author(s): Samuel Sperling, Martin J. Wooster, Bruce D. Malamud
Year Published:

An important aspect of predicting future wildland fire risk is estimating fire weather-weather conducive to the ignition and propagation of fire-under realistic climate change scenarios. Because the majority of area burned occurs on a few days of…
Author(s): Piyush Jain, Mari R. Tye, Debasish Paimazumder, Michael D. Flannigan
Year Published:

Using observations and model simulations (ESM 4.1) during 1988–2018, we show large year‐to‐year variability in western U.S. PM2.5 pollution caused by regional and distant fires. Widespread wildfires, combined with stagnation, caused summer PM2.5…
Author(s): Yuanyu Xie, Meiyun Lin, Larry W. Horowitz
Year Published:

Background: The Monitoring Trends in Burn Severity (MTBS) program has been providing the fire science community with large fire perimeter and burn severity data for the past 14 years. As of October 2019, 22 969 fires have been mapped by the MTBS…
Author(s): Joshua J. Picotte, Krishna Bhattarai, Danny Howard, Jennifer Lecker, Justin Epting, Brad Quayle, Nathan C. Benson, Kurtis J. Nelson
Year Published:

BACKGROUND: Fire has shaped the diversity of life on Earth for millions of years. Variation in fire regimes continues to be a source of biodiversity across the globe, and many plants, animals, and ecosystems depend on particular temporal and spatial…
Author(s): Luke T. Kelly, Katherine M. Giljohann, Andrea Duane, Núria Aquilué
Year Published:

Novel combinations of fire regime and forest type are emerging in areas affected by climate change, fire exclusion, and other stressors. Species interactions following wildfire in these areas are not well understood. In Sierra Nevada mixed‐conifer…
Author(s): Carmen L. Tubbesing, Robert A. York, Scott L. Stephens, John J. Battles
Year Published:

Land treatments in wildland-urban interface (WUI) areas are highly visible and subject to public scrutiny and possible opposition. This study examines a contested vegetation treatment-Forsythe II-in a WUI area of the Arapaho-Roosevelt National…
Author(s): Hannah Brenkert-Smith, Jody L. Jahn, Eric A. Vance, Juan Ahumada
Year Published:

The Great Basin can be defined floristically by plant communities dominated by species of sagebrush (Artemisia) and saltbush (Atriplex) in its southern portions and in its northern portions by sagebrush steppe and woodlands dominated by juniper (…
Author(s): Pamela E. Padgett
Year Published:

[from the text] The danger of catastrophic wildfires is increasing around the globe, with large fires occurring in Australia, Canada, Chile, Indonesia, Portugal, Russia, as well as in the United States over the past decade. A major driver globally…
Author(s): John R. Balmes
Year Published:

Comprehensive spatial coverage of forest canopy fuels is relied upon by fire management in the US to predict fire behavior, assess risk, and plan forest treatments. Here, a collection of light detection and ranging (LiDAR) datasets from the western…
Author(s): Christopher J. Moran, Van R. Kane, Carl A. Seielstad
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:

After a more than a century of fighting to keep fire out of forests, reintroducing it is now an important management goal. Yet changes over the past century have left prescribed burning with a big job to do. Development, wildfire suppression, rising…
Author(s): Sylvia Kantor, Becky K. Kerns, Michelle A. Day
Year Published: