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Ecosystem

Displaying 2181 - 2200 of 6072 results

There is an urgent need for next-generation smoke research and forecasting (SRF) systems to meet the challenges of the growing air quality, health and safety concerns associated with wildland fire emissions. This review paper presents simulations…
Author(s): Yongqiang Liu, Adam K. Kochanski, Kirk R. Baker, William E. Mell, Rodman Linn, Ronan Paugam, Jan Mandel, Aimé Fournier, Mary Ann Jenkins, Scott L. Goodrick, Gary Achtemeier, Fengjun Zhao, Roger D. Ottmar, Nancy H. F. French, Narasimhan K. Larkin, Timothy J. Brown, Andrew T. Hudak, Matthew B. Dickinson, Brian E. Potter, Craig B. Clements, Shawn P. Urbanski, Susan J. Prichard, Adam C. Watts, Derek McNamara
Year Published:

Seed mixes used for postfire seeding in the Great Basin are often selected on the basis of short-term rehabilitation objectives, such as ability to rapidly establish and suppress invasive exotic annuals (e.g., cheatgrass, Bromus tectorum L.). Longer…
Author(s): Jeffrey E. Ott, Francis F. Kilkenny, Daniel D. Summers, Tyler W. Thompson
Year Published:

Woody‐plant encroachment represents a global threat to grasslands. Although the causes and consequences of this regime shift have received substantial attention, the processes that constrain reassembly of the grassland state remain poorly understood…
Author(s): Charles B. Halpern, Joseph A. Antos, Shan Kothari, Annette M. Olson
Year Published:

Wildfire, a primary natural disturbance in many forests, affects soil nutrient availability and spatial distributions of forest plants. However, post-fire changes in soil nutrients and spatial patterns of understory environments at fine scales are…
Author(s): Jian-jian Kong, Jian Yang, Bo Liu, Lin Qi
Year Published:

A new statistical model for predicting daily ground level fine scale particulate matter (PM2.5) concentrations at monitoring sites in the western United States was developed and tested operationally during the 2016 and 2017 wildfire seasons. The…
Author(s): Amy Marsha, Narasimhan K. Larkin
Year Published:

Species that are primarily seral may form stable (self‐sustaining) communities under certain disturbance regimes or environmental conditions, yet such populations may also be particularly vulnerable to ecological change. Aspen (Populus spp.) are…
Author(s): Douglas J. Shinneman, Susan K. McIlroy
Year Published:

Risk management typologies and their resulting archetypes can structure the many social and biophysical drivers of community wildfire risk into a set number of strategies to build community resilience. Existing typologies omit key factors that…
Author(s): Cody Evers, Alan A. Ager, Max W. Nielsen-Pincus, Palaiologos Palaiologou, Ken Bunzel
Year Published:

The landscape is an ideal spatial extent for managing forests because many ecological processes and disturbances occur on such scales. Moreover, landscape-level decision-making processes can improve the efficiency of forest management, as when many…
Author(s): A. Paige Fischer, Andrew Klooster, Lora Cirhigiri
Year Published:

Wildfires cause substantial environmental and socioeconomic impacts and threaten many Spanish forested landscapes. We describe how LiDAR-derived canopy fuel characteristics and spatial fire simulation can be integrated with stand metrics to derive…
Author(s): Jeremy Arkin, Nicholas C. Coops, Txomin Hermosilla, Lori D. Daniels, Andrew Plowright
Year Published:

Aim: Fire is a globally important disturbance that affects nearly all vegetated biomes. Previous regional studies have suggested that the predictable seasonal pattern of a climatic time series, or seasonality, might aid in the prediction of average…
Author(s): Michael V. Saha, Todd M. Scanlon, Paolo D'Odorico
Year Published:

Whitebark pine (Pinus albicaulis) forests have been declining throughout their range in Western North America from the combined effects of mountain pine beetle (Dendroctonus ponderosae) outbreaks, fire exclusion policies, and the exotic disease…
Author(s):
Year Published:

Wildfire is an essential earth‐system process, impacting ecosystem processes and the carbon cycle. Forest fires are becoming more frequent and severe, yet gaps exist in the modeling of fire on vegetation and carbon dynamics. Strategies for reducing…
Author(s): Jeffrey E. Stenzel, Kristina J. Bartowitz, Melannie D. Hartman, James A. Lutz, Crystal A. Kolden, Alistair M. S. Smith, Beverly E. Law, Mark E. Swanson, Andrew J. Larson, William J. Parton, Tara W. Hudiburg
Year Published:

Dry mixed-conifer forests are widespread in the interior Pacific Northwest, but their historical fire regimes are poorly characterized, in particular the relative mix of low- and high-severity fire. We reconstructed a multi-century history of fire…
Author(s): Emily K. Heyerdahl, Rachel A. Loehman, Donald A. Falk
Year Published:

There is a growing recognition that the social diversity of communities at risk from wildland fire may necessitate divergent combinations of policies, programs and incentives that allow diverse populations to promote fire adapted communities (FACs…
Author(s): Travis B. Paveglio, Catrin Edgeley, Matthew S. Carroll, Mark Billings, Amanda M. Stasiewicz
Year Published:

Predictive models of tree mortality and survival are vital for management planning and understanding fire effects in forests and woodlands, yet the underlying mechanisms of firecaused tree mortality remain poorly understood. This shortcoming limits…
Author(s): Sharon M. Hood, J. Morgan Varner, C. Alina Cansler
Year Published:

Bees require distinct foraging and nesting resources to occur in close proximity. However, spatial and temporal patterns in the availability and quantity of these resources can be affected by disturbances like wildfire. The potential for spatial or…
Author(s): Michael P. Simanonok, Laura A. Burkle
Year Published:

The Inventory & Monitoring Division of the U.S. National Park Service conducts long-term monitoring to provide park managers information on the status and trends in biological and environmental attributes including white pines. White pines are…
Author(s): Jonathan C. B. Nesmith, Micah Wright, Erik S. Jules, Shawn T. McKinney
Year Published:

Currently, as fire risk is considered a high-frequency and low-severity risk, actuarial and underwriting pricing and risk management methods have stuck to methods based purely on historical loss data. In the global context of both increasing fire…
Author(s): Bruno Guillaume, Bernard Porterie, Antonio Carlos Batista, Phil Cottle, Armand Albergel
Year Published:

The wildfires that burned in the Northern Rockies region of the USA during the 2017 fire season provided an opportunity to evaluate the suitability of using broadscale and temporally limited infrared data on hot spot locations to determine the…
Author(s): Wesley G. Page, Natalie S. Wagenbrenner, Bret W. Butler, David L. Blunck
Year Published:

Most of the previous investigations on the relationship between PM2.5 chemical characteristics and wildfire focused on the predictions of particle components concentrations or future pollution scenarios. Little research has focused on trends…
Author(s): Weeberb J. Requia, Brent A. Coull, Petros Koutrakis
Year Published: