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Ecosystem

Displaying 1581 - 1600 of 5896 results

Fire frequency has decreased in many shrub-steppe communities. Re-introducing fire may be needed to increase spatial and temporal variability in vegetation, but is often hindered by concerns of undesired vegetation shifts. These concerns arise, in…
Author(s): Kirk W. Davies, Jonathan D. Bates
Year Published:

In recent decades, as wildland fire occurrence has increased in the United States, concern about the emissions produced by wildland fires has increased as well. This growing concern is evidenced by an increase in scientific articles investigating…
Author(s): Heath D. Starns, Douglas R. Tolleson, Robert J. Agnew, Elijah G. Schnitzler, John R. Weir
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:

Elevated wildfire activity in many regions in recent decades has increased concerns about the short‐ and long‐term effects on water quantity, quality, and aquatic ecosystem health. Often, loss of canopy interception and transpiration, along with…
Author(s): Ryan J. Niemeyer, Kevin D. Bladon, Richard D. Woodsmith
Year Published:

Land managers often need to predict watershed-scale erosion rates after disturbance or other land cover changes. This study compared commonly used hillslope erosion models to simulate post-fire sediment yields (SY) at both hillslope and watershed…
Author(s): Stephanie Kampf, Benjamin Gannon, Codie Wilson, Freddy A. Saavedra, Mary Ellen Miller, Aaron Heldmyer, Ben Livneh, Peter A. Nelson, Lee H. MacDonald
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Runoff from wildfire affected areas typically carries high concentrations of fine burned residues or eroded sediment and deposits them in surface water bodies or on subsurface soils. Although the role of wildfire residues in increasing the…
Author(s): Renan Valenca, Kavita Ramnath, Timothy M. Dittrich, Robert E. Taylor, Sanjay K. Mohanty
Year Published:

Wildfires are exorbitantly cataclysmic disasters that lead to the destruction of forest cover, wildlife, land resources, human assets, reduced soil fertility and global warming. Every year wildfires wreck havoc across the globe. Therefore, there is…
Author(s): Harkiran Kaur, Sandeep K. Sood
Year Published:

Purpose of Review: Prescribed fire escapes continue to challenge most fire and land management agencies and many communities. This article considers the issue from knowledge management (KM) and organizational learning (OL) perspectives. We review…
Author(s): Anne E. Black, P. Hayes, R. Strickland
Year Published:

Background: Prairie-forest ecotones are ecologically important for biodiversity and ecological processes. While these ecotones cover small areas, their sharp gradients in land cover promote rich ecological interaction and high conservation value.…
Author(s): Penelope Morgan, Emily K. Heyerdahl, Eva K. Strand, Stephen C. Bunting, James P. Riser, John T. Abatzoglou, Max W. Nielsen-Pincus, Mara Johnson
Year Published:

Fire severity in forests is often defined in terms of post-fire tree mortality, yet the influences on tree mortality following fire are not fully understood. Pre-fire growth may serve as an index of vigour, indicating resource availability and the…
Author(s): Phillip J. van Mantgem, Donald A. Falk, Emma C. Williams, Adrian J. Das, Nathan L. Stephenson
Year Published:

Inhaling wildfire smoke can be harmful, but smoke from unintended wildfires may be worse than smoke from prescribed burns, according to a study published in 2019. That means the health risks from wildfires — like the ones that have destroyed…
Author(s): Casey Crownhart
Year Published:

Paleoecological records detailing fire and vegetation histories during previous interglacials are extremely rare. We present a unique, high-resolution, 10-m long record of fire from a high elevation conifer-dominated site - the Snowmastodon (Ziegler…
Author(s): R. Scott Anderson, Gonzalo Jiménez-Moreno, Monique Belanger, Christy E. Briles
Year Published:

We examined the seasonal distribution of lightning- and human-caused wildfires ≥ 2 ha in Canada for two time periods: 1959-2018 and 1981-2018. Furthermore, we investigated trends in seasonality, number of fires per year and number of days with fire…
Author(s): Sean C. P. Coogan, Xinli Cai, Piyush Jain, Michael D. Flannigan
Year Published:

A systematic visualisation system that can image the visible flame, invisible hot gas and the wood surface temperature, was applied to study self-sustained fire propagation in a wood rod at different inclination angles. It was found that the burned…
Author(s): Yufeng Lai, Xiao Wang, Thomas B.O. Rockett, Jon R. Willmott, Hangxu Zhou, Yang Zhang
Year Published:

There is limited research on recreationists’ responses to changes in resource conditions after wildfire. Existing studies often rely on presenting visitors with hypothetical wildfire scenarios or simulated changes in conditions. We completed a quick…
Author(s): Eric M. White, Terry R. Bergerson, Elliot T. Hinman
Year Published:

Forest fires are incidents of great importance in Mediterranean environments. Landsat data have proven to be suitable for evaluating post-fire vegetation damage and determining different levels of burn severity, which is crucial for planning post-…
Author(s): Carmen Quintano, Alfonso Fernández-Manso, Dar A. Roberts
Year Published:

With climate-driven increases in wildfires in the western U.S., it is imperative to understand how the risk to homes is also changing nationwide. Here, we quantify the number of homes threatened, suppression costs, and ignition sources for 1.6…
Author(s): Nathan Mietkiewicz, Jennifer Balch, Tania L. Schoennagel, Stefan Leyk, Lise A. St. Denis, Bethany A. Bradley
Year Published:

Changing disturbance regimes and climate can overcome forest ecosystem resilience. Following high-severity fire, forest recovery may be compromised by lack of tree seed sources, warmer and drier postfire climate, or short-interval reburning. A…
Author(s): Jonathan D. Coop, Sean A. Parks, Camille Stevens-Rumann, Shelley Crausbay, Philip E. Higuera, Matthew D. Hurteau, Alan J. Tepley, Ellen Whitman, Timothy J. Assal, Brandon M. Collins, Kimberley T. Davis, Solomon Z. Dobrowski, Donald A. Falk, Paula J. Fornwalt, Peter Z. Fule, Brian J. Harvey, Van R. Kane, Caitlin E. Littlefield, Ellis Q. Margolis, Malcolm P. North, Marc-Andre Parisien, Susan J. Prichard, Kyle Rodman
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:

Cheatgrass and other invasive annual grasses, such as medusahead and ventenata, are taking over America’s sagebrush rangelands, increasing wildfire size and frequency, reducing forage productivity, and threatening wildlife habitat and rural…
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