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Ecosystem

Displaying 1261 - 1280 of 6016 results

Climate change is expected to increase fire activity in many regions of the globe, but the relative role of human vs. lightning-caused ignitions on future fire regimes is unclear. We developed statistical models that account for the spatiotemporal…
Author(s): Ana M. G. Barros, Michelle A. Day, Haiganoush K. Preisler, John T. Abatzoglou, Meg A. Krawchuk, Rachel M. Houtman, Alan A. Ager
Year Published:

Postfire shifts in vegetation composition will have broad ecological impacts. However, information characterizing postfire recovery patterns and their drivers are lacking over large spatial extents. In this analysis, we used Landsat imagery…
Author(s): Melanie K. Vanderhoof, Todd J. Hawbaker, Andrea Ku, Kyle E. Merriam, Erin Berryman, Megan E. Cattau
Year Published:

Fire regimes are shifting under climate change. Decadal-scale shifts in fire regime can disrupt the biogeochemical cycling of carbon (C), nitrogen (N), and phosphorus (P) within forest ecosystems, but the full extent of these disruptions is unknown…
Author(s): Orpheus M. Butler, Tom Lewis, Sarah C. Maunsell, Mehran Rezaei Rashti, James J. Elser, Brendan Mackey, Chengrong Chen
Year Published:

Dead fuel moisture content (DFMC) is a key driver for fire occurrence and is often an important input to many fire simulation models. There are two main approaches to estimating DFMC: empirical and process-based models. The former mainly relies on…
Author(s): Chanquan Fan, Binbin He
Year Published:

With an increase in the frequency and severity of wildfires across the globe and resultant changes to long-established fire regimes, the mapping of fire severity is a vital part of monitoring ecosystem resilience and recovery. The emergence of…
Author(s): Samuel Hillman, Bryan Hally, Luke Wallace, Darren Turner, Arko Lucieer, Karin J. Reinke, Simon D. Jones
Year Published:

Background: Fire suppression and anthropogenic land use have increased severity of wildfire in western U.S. dry conifer forests. Managers use fuels reduction methods (e.g., prescribed fire) to limit high-severity wildfire and restore ecological…
Author(s): Quresh Latif, Victoria A. Saab, Jonathan G. Dudley
Year Published:

Policy initiatives such as the Collaborative Forest Landscape Restoration Program (Rep. Holt, 2009) have emphasized landscape-scale (> 10,000 ac) fuel reduction treatments to mitigate adverse impacts of large, uncharacteristic wildfires in the…
Author(s): Chad M. Hoffman, William E. Mell, Russell A. Parsons, Seth A. Ex, Justin P. Ziegler
Year Published:

We estimated cardiopulmonary morbidity and mortality associated with wildfire smoke (WFS) fine particulate matter (PM2.5) in the Front Range of Colorado from 2010 - 2015. To estimate WFS PM2.5, we developed a daily kriged PM2.5 surface at a 15km X…
Author(s): Sheryl Magzamen, Ryan W. Gan, Jingyang Liu, Katelyn O'Dell, Bonne Ford Hotmann, Kevin Berg, Kirk Bol, Ander Wilson, Emily V. Fischer, Jeffrey R. Pierce
Year Published:

As the need for wildfire adaptation for human populations in the wildland-urban interface (WUI) intensifies in the face of changes that have increased the number of wildfires that exceed 100 thousand acres, it is becoming more important to come to a…
Author(s): Mark Billings, Matthew S. Carroll, Travis B. Paveglio, Kara Whitman
Year Published:

Following the 2020 wildfires in Australia an extremely large amount of smoke entered the stratosphere and was dispersed throughout the southern hemisphere stratosphere. However, the pathway and entry point of the smoke into the stratosphere and the…
Author(s): Leehi Magaritz-Ronen, Shira Raveh-Rubin
Year Published:

The purpose of this study was to investigate the merging behavior of small-scale buoyant flames that might be representative of flames from a leaf in a shrub. Zirconia felt pads soaked in n-heptane were suspended on thin rods and spaced both…
Author(s): Thomas H. Fletcher, Denver Haycock, Seth Tollefsen, David O. Lignell
Year Published:

This FEIS species review synthesizes information on the relationship of Lathyrus bijugatus (pinewoods sweetpea) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species…
Author(s): Janet L. Fryer
Year Published:

While fire is an important ecological process in the western United States, wildfire size and severity have increased over recent decades as a result of climate change, historical fire suppression, and lack of adequate fuels management. Due to the…
Author(s): Lisa Patrick Bentley, Brieanne Forbes
Year Published:

A typographical error in the original version of Table S1 as posted in 2012 has been brought to our attention. The coefficient in the Thomas (1963) equation (0.02665) is correct but the exponent should have read 0.667 and not 0.46. Any calculations…
Author(s): Martin E. Alexander, Miguel G. Cruz
Year Published:

Daily, fine-scale spatially explicit wildland fire occurrence prediction (FOP) models can inform fire management decisions. Many different data-driven modelling methods have been used for FOP. Several studies use multiple modelling methods to…
Author(s): Nathan Phelps, Douglas G. Woolford
Year Published:

Aim: Fine‐scale topography and canopy cover can play an important role in mediating effects of regional‐scale climate change on the below‐canopy environment in mountain forests. The aim of this study was to determine how below‐canopy temperatures in…
Author(s): Amanda R. Carlson, Jason S. Sibold, Jose F. Negron
Year Published:

Water supply impairment from increased contaminant mobilization and transport after wildfire is a major concern for communities that rely on surface water from fire-prone watersheds. In this article we present a Monte Carlo simulation method to…
Author(s): Benjamin Gannon, Yu Wei, Matthew P. Thompson, Joe H. Scott, Karen C. Short
Year Published:

Wildfires significantly influence ecosystem patterns and processes on a global scale. In many cases, they pose a threat to human lives and property. Through greenhouse gas emissions, wildfires also directly contribute to climate change. The…
Author(s): Michael Nolde, Simon Plank, Rudolf Richter, Doris Klein, Torsten Riedlinger
Year Published:

The objective of this work is to model and simulate aerial drops of fire retardants in dangerous fire environments. Specifically, the work develops a computational framework for a model problem combining: [1.] A meshless discrete element component…
Author(s): T. I. Zohdi
Year Published:

One of the main sources of greenhouse gases is forest fire, with carbon dioxide as its main constituent. With increasing global surface temperatures, the probability of forest fire events also increases. A method that enables rapid quantification of…
Author(s): Putri Setiani, Luhur Akbar Devianto, Fatwa Ramdani
Year Published: