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Ecosystem

Displaying 1661 - 1680 of 6068 results

Extreme fires have substantial adverse effects on society and natural ecosystems. Such events can be associated with the intense coupling of fire behaviour with the atmosphere, resulting in extreme fire characteristics such as pyrocumulonimbus cloud…
Author(s): Mercy N. Ndalila, Grant J. Williamson, Paul Fox-Hughes, J. Sharples, David M. J. S. Bowman
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:

Thermal heterogeneity provides options for organisms during extreme temperatures that can contribute to their fitness. Sagebrush (Artemisia spp.) communities exhibit vegetation heterogeneity that creates thermal variation at fine spatial scales.…
Author(s): Christopher R. Anthony, Christian A. Hagen, Katie M. Dugger, R. Dwayne Elmore
Year Published:

The photoload technique provides a quick and accurate means of estimating the loadings of six wildland fuel components including 1 hr, 10 hr, 100 hr, and 1,000 hr downed dead woody, shrub, and herbaceous fuels. It involves visually comparing fuel…
Author(s): Christine Stalling, Robert E. Keane
Year Published:

Restoration and rehabilitation treatments that manipulate vegetation can be expensive to implement but are infrequently evaluated to determine whether spending more improves intended outcomes. We assessed commonly implemented vegetation treatments…
Author(s): Seth Munson, Ethan O. Yackulic, Lucas S. Bair, Stella M. Copeland, Kevin L. Gunnell
Year Published:

Wildfire is a natural component of sagebrush (Artemisia spp.) steppe rangelands that induces temporal shifts in plant community physiognomy, ground surface conditions, and erosion rates. Fire alteration of the vegetation structure and ground cover…
Author(s): Samantha P. Vega, C. Jason Williams, Erin S. Brooks, Frederick B. Pierson, Eva K. Strand, Peter R. Robichaud, Robert E. Brown, Mark S. Seyfried, Kathleen A. Lohse, Kayla Glossner, Jennifer L. Pierce, Clay Roehner
Year Published:

Understanding the social acceptability of managing forest fuels to reduce wildfire risk is essential to achieving long-term investment in fuel management that is supported publicly and politically. Integrative Complexity Theory (ICT) examines how…
Author(s): Melinda R. Mylek, Jacki Schirmer
Year Published:

Large outdoor fires are one of the prominent fire problems in the world. Spot fires, caused by firebrands, are known as a key mechanism of rapid fire spread. Firebrands ignite unburned fuels far ahead of the fire front. In large outdoor fires,…
Author(s): Sayaka Suzuki, Sam Manzello
Year Published:

This review examines the impact of prescribed fire on the water quality variables (a) sediment load and (b) limiting macronutrients in forested environments globally. We aim to characterize the forested environments subject to prescribed fire, to…
Author(s): Kipling Klimas, Patrick Hiesl, Donald L. Hagan, Dara Park
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To inform future restoration efforts, we reviewed the known effects of fire and habitat management and restoration on hummingbirds in four key habitat types in North America. We examined seven species that most commonly occur west of the Rocky…
Author(s): John D. Alexander, Elizabeth Williams, Caitlyn R. Gillespie, Sarahy Contreras-Martínez, Deborah M. Finch
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, Scott L. Stephens
Year Published:

Previous research has suggested that prescribed fire will become more necessary in the northern Great Plains of the United States as woody encroachment and invasive plant species cover increase. Prescribed fire will likely become a more frequent…
Author(s): Katherine C. Kral-O'Brien, Kevin K. Sedivec, Benjamin A. Geaumont, Amanda L. Gearhart
Year Published:

Globally accelerating frequency and extent of wildfire threatens the persistence of specialist wildlife species through direct loss of habitat and indirect facilitation of exotic invasive species. Habitat specialists may be especially prone to…
Author(s): Shawn T. O'Neil, Peter S. Coates, Brianne E. Brussee, Mark A. Ricca, Shawn Espinosa, Scott C. Gardner, David J. Delehanty
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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:

High severity wildfires impact hillslope processes, including infiltration, runoff, erosion, and sediment delivery to streams. Wildfire effects on these processes can impair vegetation recovery, producing impacts on headwater and downstream water…
Author(s): Ryan P. Cole, Kevin D. Bladon, Joseph W. Wagenbrenner, Drew B. R. Coe
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:

Disasters have become increasingly common, calling for the need to more fully understand the impacts of such events. This article presents a scoping review of the psychosocial impacts of wildland fires on children, adolescents and family functioning…
Author(s): Judith C. Kulig, Julia Dabravolskaj
Year Published:

Stand-replacing fires burned at 100 to 300-year intervals for millennia in subalpine conifer forests of western North America, but forests are burning more frequently as climate warms. Postfire tree regeneration is reduced when young forests reburn…
Author(s): Tyler J. Hoecker, Winslow D. Hansen, Monica G. Turner
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: