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Ecosystem

Displaying 2061 - 2080 of 5896 results

Prescribed burning affects plant community composition including the abundance of peat-forming Sphagnum mosses. Understanding the processes by which fire impacts occur and the variability of impacts according to fire severity is important when…
Author(s): Alice Noble, Alistair Crowle, David J. Glaves, Sheila M. Palmer, Joseph Holden
Year Published:

The principal aim of this project was to project changes in fuels, fire dynamics, and associated responses of vegetation and breeding birds that might inform selection and prioritization of management actions in the Great Basin. Our original six…
Author(s): Erica Fleishman, Jennifer Balch, Bethany A. Bradley, Ned Horning, Matthias Leu
Year Published:

Climate change poses a serious threat to biodiversity and unprecedented challenges to the preservation and protection of natural landscapes. We evaluated how climate change might affect vegetation in 22 of the largest and most iconic protected area…
Author(s): Lisa M. Holsinger, Sean A. Parks, Marc-Andre Parisien, Carol Miller, Enric Batllori, Max A. Moritz
Year Published:

The quantity and condition of downed dead wood (DDW) is emerging as a major factor governing forest ecosystem processes such as carbon cycling, fire behavior, and tree regeneration. Despite this, systematic inventories of DDW are sparse if not…
Author(s): Christopher W. Woodall, Vicente J. Monleon, Shawn Fraver, Matthew B. Russell, Mark H. Hatfield, John L. Campbell, Grant M. Domke
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:

As a leader of a diverse set of formal and informal teams, the successful IC needs to be able to play a number of roles at different points in time—as executive, as innovator, as teacher, and as pastor. The IC supervises and directs a variety of…
Author(s): Anne E. Black, R. E. Boyatzis, K. Thiel, K. Rochford
Year Published:

Annual Land Use and Land Cover (LULC) maps are needed to identify the interaction between landscape changes and wildland fires. Objectives: In this work, we determined fire hazard changes in a representative Mediterranean landscape through the…
Author(s): Natalia Quintero, Olga Viedma, Itziar R. Urbieta, José M. Moreno
Year Published:

The devastating effects of wildfires cannot be overlooked; these include massive resettlement of people, destruction of property and loss of lives. The considerable distances over which wild fires spread and the rates at which these fires can spread…
Author(s): Nitish Chooramun, Peter J. Lawrence, Edwin R. Galea
Year Published:

Following high-severity wildfire, application of mulch on the soil surface is commonly used to stabilize slopes and limit soil erosion potential, protecting ecosystem values at risk. Despite the widespread use of mulch, relatively little is known…
Author(s): Jayne L. Jonas, Erin Berryman, Brett Wolk, Penelope Morgan, Peter R. Robichaud
Year Published:

Subalpine forests in the northern Rocky Mountains have been resilient to stand-replacing fires that historically burned at 100- to 300-year intervals. Fire intervals are projected to decline drastically as climate warms, and forests that reburn…
Author(s): Monica G. Turner, Kristin H. Braziunas, Winslow D. Hansen, Brian J. Harvey
Year Published:

Devastation of both natural and human habitats due to wildfires is becoming an increasingly prevalent global issue. Fire-adapted and fire-prone regions, such as California and parts of Australia, are experiencing more frequent and increasingly…
Author(s): Clare Stawski, Anna C. Doty
Year Published:

Presently, there is a need for a robust numerical simulation approach to investigate the influence of various parameters on fire spread in large open framed structures. CFD-based methods can already be used for analyzing the fire conditions but they…
Author(s): R. Kallada Janardhan, S. Hostikka
Year Published: