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Ecosystem

Displaying 901 - 920 of 6037 results

At a fundamental level, smoke from wildland fire is of scientific concern because of its potential adverse effects on human health and social well-being. Although many impacts (e.g., evacuations, property loss) occur primarily in proximity to the…
Author(s): Sarah M. McCaffrey, Ana G. Rappold, Mary Clare Hano, Kathleen M. Navarro, Tanya F. Phillips, Jeffrey P. Prestemon, Ambarish Vaidyanathan, Karen L. Abt, Colleen Reid, Jason D. Sacks
Year Published:

Fire is a natural agent with a paramount role in ecosystem functioning and biodiversity maintenance. Still, it can also act as a negative force against many ecosystems. Despite some knowledge of the interactions of fire and vegetation, there is no…
Author(s): Tania Marisol González, Juan David González-Trujillo, Alberto Muñoz, Dolors Armenteras
Year Published:

Earth's rapidly warming climate is propelling us towards an increasingly fire-prone future. Currently, knowledge of the extent and characteristics of animal mortality rates during fire remains rudimentary, hindering our ability to predict how animal…
Author(s): Chris J. Jolly, Christopher R. Dickman, Tim S. Doherty, Lily M. van Eeden, William L. Geary, Sarah Legge, John C. Z. Woinarski, Dale G. Nimmo
Year Published:

An analysis of a dataset (n = 58) of high-intensity wildfire observations in cured grasslands from southern Australia revealed a simple relationship suitable for quickly obtaining a first approximation of a fire’s spread rate under low dead fuel…
Author(s): Miguel G. Cruz, Martin E. Alexander, Musa Kilinc
Year Published:

Although bull trout (Salvelinus confluentus) and tailed frogs (Ascaphus montanus) have co-existed in forested Pacific Northwest streams for millennia, these iconic cold-water specialists are experiencing rapid environmental change caused by a…
Author(s): David S. Pilliod, Robert S. Arkle, Russell F. Thurow, Daniel J. Isaak
Year Published:

Wildland fire suppression presents a working environment that often exceeds an energy expenditure of 20 MJ/day. Despite high levels of chronic physical exertion, we have noted maladaptive alterations in adiposity and blood lipids in a small cohort…
Author(s): Alejandro M. Rosales, Patrick S. Dodds, Walter S. Hailes, Joseph A. Sol, R.H. Coker, John C. Quindry, Brent Ruby
Year Published:

Background:Exposure to inhaled smoke, pollutants, volatile organic compounds, and polycyclic aromatic hydrocarbons in the firefighting environment has been associated with detrimental respiratory and cardiovascular effects, making firefighters a…
Author(s): Catherine Vanchiere, Rithika Thirumal, Aditya Hendrani, Parinita Dherange, Angela Bennett, Runhua Shi, Rakesh Gopinathannair, Brian Olshansky, Denise L. Smith, Paari Dominic
Year Published:

We evaluated the effects of postfire management on forest structure in mixed-conifer forests of northeastern Washington, USA. Postfire treatments were harvest-only, harvest combined with planting, planting-only, and postfire prescribed fire. We used…
Author(s): C. Alina Cansler, Van R. Kane, Bryce N. Bartl-Geller, Derek J. Churchill, Paul F. Hessburg, Nicholas A. Povak, James A. Lutz, Jonathan T. Kane, Andrew J. Larson
Year Published:

The use of Unmanned Aerial Vehicles (UAVs), colloquially known as drones, has grown rapidly over the past two decades and continues to expand at a rapid pace. This has resulted in the production of many research papers addressing the use of UAVs in…
Author(s): Ihab L. Hussein Alsammak, Moamin A. Mahmoud, Hazleen Aris, Muhana AlKilabi, Mohammed Najah Mahdi
Year Published:

Aim: Climate warming is expected to drive upward and poleward shifts at the leading edge of tree species ranges. Disturbance has the potential to accelerate these shifts by altering biotic and abiotic conditions, though this potential is likely to…
Author(s): Katherine Nigro, Monique E. Rocca, Michael A. Battaglia, Jonathan D. Coop, Miranda Redmond
Year Published:

Peatland wildfire frequency and severity are increasing globally owing to climate change. The direct risk of elevated greenhouse gas emissions from peat burning receives much attention, yet the risks to vegetation composition or peat decomposition…
Author(s): Abbey L. Marcotte, Juul Limpens, Cathelijine Stoof, Jetse J. Stoorvogel
Year Published:

Background and objectives: The Great Basin Desert with its critical sage grouse habitat is at a “tipping point” wherein fires that were rare and patchy historically are increasing in frequency, size and severity. Wildfire is now the largest driver…
Author(s): Branda Nowell
Year Published:

After a century of intensive logging, federal forest management policies were developed in the 1990s to protect remaining large trees and old forests in the western US. Today, due to rapidly changing ecological conditions, new threats and…
Author(s): Paul F. Hessburg, Susan Charnley, Andrew N. Gray, Thomas A. Spies, David W. Peterson, Rebecca L. Flitcroft, Kendra L. Wendel, Jessica E. Halofsky, Eric M. White, John D. Marshall
Year Published:

This work experimentally investigates the fire spread of discrete fuels by using fuel beds of laser-cut cardboards in a wind tunnel. Two distinct particle ignition modes are identified: under lower wind speed and packing ratio, a part of the tilted…
Author(s): Qianqian He, Naian Liu, Xiaodong Xie, Linhe Zhang, Jaio Lei, Yang Zhang, Di Wu
Year Published:

In ecosystems where trees and grasses coexist, some grass species are found only in open habitats and others persist under trees. The persistence of shade intolerant grasses in ecosystems such as open woodlands and savannas depends on recurrent…
Author(s): Xiulin Gao, Dylan W. Schwilk
Year Published:

This paper presents a phenomenological framework for forecasting the area-integrated fire radiative power from wildfires. In the method, a region of interest is covered with a regular grid, whose cells are uniquely and independently parameterized…
Author(s): Tero M. Partanen, Mikhail Sofiev
Year Published:

Emission measurements are available in the literature for a wide variety of field burns and laboratory experiments, although previous studies do not always isolate the effect of individual features such as fuel moisture content (FMC). This study…
Author(s): Priya Garg, Thomas Roche, Matthew Eden, Jacqueline Matz, Jessica Oakes, Chiara Bellini, Michael J. Gollner
Year Published:

The goal of decreasing wildfire hazard as much as possible, using minimal fuel treatments, has led to increasing scholarly interest in fuel reduction spatial optimisation. Most models in the field rest on the assumption of a known wind direction and…
Author(s): Assaf Shmuel, Eyal Heifetz
Year Published:

Wildfires produce a mosaic of burned and unburned patches across varying temporal and spatial scales and provide a range of essential ecosystem services. Fire perimeters mark the separation between the burned and unburned matrix of a fire. Analysis…
Author(s): Kiera A. P. Macauley, Neal McLoughlin, Jennifer L. Beverly
Year Published:

While there is a large literature on how individual homeowners perceive location-specific wildfire hazard, there is only one study specific to U.S. family forest owners. Using respondents from the United States Department of Agriculture (USDA)…
Author(s): Brian Danley, Jesse Caputo, Brett J. Butler
Year Published: