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Ecosystem

Displaying 1781 - 1800 of 6066 results

Legacy effects from one disturbance may influence successional pathways by amplifying or buffering forest regeneration after the next disturbance. We assessed vegetation and tree regeneration in non-serotinous Sierra lodgepole pine (Pinus contorta…
Author(s): Lucas B. Harris, Stacy Drury, Alan H. Taylor
Year Published:

Boreal forest and tundra biomes are key components of the Earth system because the mobilization of large carbon stocks and changes in energy balance could act as positive feedbacks to ongoing climate change. In Alaska, wildfire is a primary driver…
Author(s): Tyler J. Hoecker, Philip E. Higuera, Ryan Kelly, Feng Sheng Hu
Year Published:

Monte Carlo simulations using wildland fire spread models have been conducted to produce numerical estimates of fire likelihood, project potential fire effects, and produce event sets of realistic wildfires (Parisien et al., 2019). The application…
Author(s): Marc-Andre Parisien, Alan A. Ager, Ana M. G. Barros, Denyse A. Dawe, Sandy Erni, Mark A. Finney, Charles W. McHugh, Carol Miller, Sean A. Parks, Karen L. Riley, Karen C. Short, Christopher A. Stockdale, Xianli Wang, Ellen Whitman
Year Published:

Increases in burned area across the western US since the mid‐1980’s have been widely documented and linked partially to climate factors, yet evaluations of trends in fire severity are lacking. Here, we evaluate fire severity trends and their…
Author(s): Sean A. Parks, John T. Abatzoglou
Year Published:

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:

Prescribed burning is used in Australia as a tool to manage fire risk and protect assets. A key challenge is deciding how to arrange the burns to generate the highest benefits to society. Studies have shown that prescribed burning in the wildland–…
Author(s): Veronique Florec, Michael P. Burton, David J. Pannell, Joel K. Kelso, George J. Milne
Year Published:

The Smoke and Roadway Safety Guide provides wildland fire personnel the tools and methods to effectively plan and forecast for roadway smoke impacts and to monitor, respond to, and mitigate smoke on roadways to reduce the risk to the public and fire…
Author(s): Gary M. Curcio, David Mueller, Peter Lahm, Mark Fitch, Joshua C. Hyde
Year Published:

With the past century of fire suppression in ponderosa pine (Pinus ponderosa) forests, there has been an accumulation of surface fuels, causing decreases in understory vegetation and increasing high severity fire risk. However, fire size and…
Author(s): Eva K. Strand, Jessie M. Dodge
Year Published:

Knowledge of how disturbances such as fire shape habitat structure and composition, and affect animal interactions, is fundamental to ecology and ecosystem management. Predators also exert strong effects on ecological communities, through top‐down…
Author(s): William L. Geary, Tim S. Doherty, Dale G. Nimmo, Ayesha I. T. Tulloch, Euan G. Ritchie
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Background: Wildfire events are increasing in prevalence in the western United States. Research has found mixed results on the degree to which exposure to wildfire smoke is associated with an increased risk of mortality. Methods: We tested for an…
Author(s): Annie Doubleday, Jill Schulte, Lianne Sheppard, Matthew C. Kadlec, Ranil Dhammapala, Julie Fox, Tania M. Busch Isaksen
Year Published:

Worldwide, regularly recurring wildfires shape many peatland ecosystems to the extent that fire‐adapted species often dominate plant communities, suggesting that wildfire is an integral part of peatland ecology rather than an anomaly. The most…
Author(s): Neal E. Flanagan, Hongjun Wang, Scott Winton, Curtis J. Richardson
Year Published:

Exotic grasses are a widespread set of invasive species that are notable for their ability to significantly alter key aspects of ecosystem function. Understanding the role and importance of these invaders in forested landscapes has been limited but…
Author(s): Becky K. Kerns, Claire Tortorelli, Michelle A. Day, Ty Nietupski, Ana M. G. Barros, John Kim, Meg A. Krawchuk
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Harnessing the fire data revolution, i.e., the abundance of information from satellites, government records, social media, and human health sources, now requires complex and challenging data integration approaches. Defining fire events is key to…
Author(s): Jennifer Balch, Lise A. St. Denis, Adam L. Mahood, Nathan Mietkiewicz, Travis M. Williams, Joe McGlinchy, Maxwell C. Cook
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Accumulating data indicate the importance of fire in rangeland systems. Mowing is a common management technique sometimes considered a surrogate for fire. However, direct comparisons of fire and mowing effects are limited. Our objective was to…
Author(s): Lance T. Vermeire, Dustin J. Strong, Emily A. Gates, Clayton B. Marlow, Richard C. Waterman
Year Published:

Climates—especially seasonal and long‐term droughts—and fuel loads combine to determine risks of wildfires across much of Australia. Here we illustrate how long‐term accumulations of fuel combined with a serious drought to drive the behaviour and…
Author(s): Mark A. Adams, Majid Shadmanroodposhti, Mathias Neumann
Year Published:

This work reports characteristics of embers generated by torching trees and seeks to identify the important physical and biological factors involved. The size of embers, number flux and propensity to ignite spot fires (i.e. number flux of ‘hot’…
Author(s): Tyler R. Hudson, Ryan B. Bray, David L. Blunck, Wesley G. Page, Bret W. Butler
Year Published:

Research Highlights: Our results suggest that weather is a primary driver of resource orders over the course of extended attack efforts on large fires. Incident Management Teams (IMTs) synthesize information about weather, fuels, and order resources…
Author(s): Jude Bayham, Erin J. Belval, Matthew P. Thompson, Christopher J. Dunn, Crystal S. Stonesifer, David E. Calkin
Year Published:

Following a wildfire, regeneration to forest can take decades to centuries and is no longer assured in many western U.S. environments given escalating wildfire severity and warming trends. After large fire years, managers prioritize where to…
Author(s): Nicholas A. Povak, Derek J. Churchill, C. Alina Cansler, Paul F. Hessburg, Van R. Kane, Jonathan T. Kane, James A. Lutz, Andrew J. Larson
Year Published:

Smouldering peat fires are reported across continents and their emissions result in regional haze crisis (large scale accumulation of smoke at low altitudes) and large carbon foot prints. Inorganic content (IC) and bulk density vary naturally in…
Author(s): Yuqi Hu, Wuquan Cui, Guillermo Rein
Year Published:

A substantial proportion of Italian students are unaware of the connection between what they learn at school and their work opportunities .This proportion would most likely increase if data were collected today, given the generation of a broad range…
Author(s): Stefania Amici, Marek Tesar
Year Published: