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Ecosystem

Displaying 2761 - 2780 of 6067 results

New fire disturbance regimes under accelerating global environmental change can have unprecedented consequences for ecosystem resilience, lessening ecosystem natural regeneration. In the Mediterranean Basin, firedependent obligate seeder forests…
Author(s): Angela Taboada, Víctor Fernández-García, Elena Marcos, Leonor Calvo
Year Published:

Silvicultural thinning treatments to restore whitebark pine (Pinus albicaulis) are widely used in subalpine forests throughout the western United States (US) and Canada. The objectives of these treatments are to (1) improve the condition of…
Author(s): Colin T. Maher, Cara R. Nelson, Andrew J. Larson, Anna Sala
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Tree mortality is an important outcome of many forest fires. Extensive tree injuries from fire may lead directly to mortality, but environmental and biological stressors may also contribute to tree death. However, there is little evidence showing…
Author(s): Phillip J. van Mantgem, Donald A. Falk, Emma C. Williams, Adrian J. Das, Nathan L. Stephenson
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Each year wildland fires kill and injure trees on millions of forested hectares globally, affecting plant and animal biodiversity, carbon storage, hydrologic processes, and ecosystem services. The underlying mechanisms of fire-caused tree mortality…
Author(s): Sharon M. Hood, J. Morgan Varner, Phillip J. van Mantgem, C. Alina Cansler
Year Published:

The most direct way of deciphering the dynamics of an ecosystem is to examine its biotic and abiotic components based on analysis of living and dead organisms distributed above ground. The surface analysis method presented here provides a centennial…
Author(s): Vanessa Pilon, Serge Payette, Pierre-Luc Couillard, Jason Laflamme
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Vertical greenery systems (VGS) are getting popular as a green cladding material. However, they have not been adequately assessed in terms of fire safety. Lack of maintenance and improper irrigation systems will cause drying of plants in VGS,…
Author(s): Kalani C. Dahanayake, Cheuk Lun Chow
Year Published:

High-severity, infrequent fires in forests shape landscape mosaics of stand age and structure for decades to centuries, and forest structure can vary substantially even among same-aged stands. This variability among stand structures can affect…
Author(s): Kristin H. Braziunas, Winslow D. Hansen, Rupert Seidl, Werner Rammer, Monica G. Turner
Year Published:

Prescribed fire is widely applied in western US forests to limit future fire severity by reducing tree density, fuels, and excessive seedlings. Repeated prescribed burning attempts to simulate historical fire regimes in frequent-fire forests, yet…
Author(s): Douglas J. Westlind, Becky K. Kerns
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Before fire models can be understood, evaluated, and effectively applied to support decision making, model-based uncertainties must be analyzed. In this chapter, we identify and classify sources of uncertainty using an established analytical…
Author(s): Karen L. Riley, Matthew P. Thompson
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As climate change has contributed to longer fire seasons and populations living in fire-prone ecosystems increase, wildfires have begun to affect a growing number of people. As a result, interest in understanding the wildfire evacuation decision…
Author(s): Sarah M. McCaffrey, Robyn S. Wilson, Avishek Konar
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Traditional knowledge about fire and its effects held by indigenous people, who are connected to specific landscapes, holds promise for informing contemporary fire and fuels management strategies and augmenting knowledge and information derived from…
Author(s): Brooke Baldauf McBride, Fernando Sanchez-Trigueros, Stephen J. Carver, Alan E. Watson, Roian Matt, William T. Borrie, Linda Moon Stumpff
Year Published:

Ventenata is a nonnative, annual grass that is invasive in parts of the Pacific Northwest. A review of the literature and observational evidence shows that its establishment and spread is greatest in Palouse prairie and sagebrush communities and in…
Author(s): Janet L. Fryer
Year Published:

Since 2009, the US Department of Agriculture Forest Service has promoted an “all lands approach” to forest restoration, particularly relevant in the context of managing wildfire. To characterize its implementation, we undertook an inventory of what…
Author(s): Susan Charnley, Erin C. Kelly, Kendra L. Wendel
Year Published:

Mastication is becoming a common fuel treatment method in forests and shrublands of the United States, especially where prescribed fire or mechanical fuel removal is difficult. Such sites are often located in the wildland urban interface (WUI) where…
Author(s): Pamela G. Sikkink
Year Published:

1) The loss of foundational but fire-intolerant perennials such as sagebrush due to increases in fire size and frequency in semi-arid regions has motivated efforts to restore them, often with mixed or even no success. Seeds of sagebrush Artemisia…
Author(s): Martha M. Brabec, Matthew J. Germino, Bryce A. Richardson
Year Published:

Mountain big sagebrush is a widely distributed shrub native to the western United States. Mountain big sagebrush ecosystems support hundreds of plant and animal species, including several sagebrush obligates. The distribution of mountain big…
Author(s): Robin J. Innes
Year Published:

This project had three objectives. The first objective was to identify variation in discrimination of Δ13C and intrinsic water use efficiency (iWUE) in Ponderosa pine (Pinus ponderosa) tree rings from 1800 to 2012 at two Fire and Fire Surrogate…
Author(s): Alan H. Taylor, Soumaya Belmecheri, Lucas B. Harris
Year Published:

Conservation of imperiled species often demands addressing a complex suite of threats that undermine species viability. Regulatory approaches, such as the US Endangered Species Act (1973), tend to focus on anthropogenic threats through adoption of…
Author(s): Jeanne C. Chambers, Jeremy D. Maestas, David A. Pyke, Chad S. Boyd, Michael L. Pellant, Amarina Wuenschel
Year Published:

Aspen ecosystems are valued because they add biodiversity and ecological value to the landscape. They provide rich and productive habitats and increase aesthetic value. Climate change poses the risk of altering and disrupting these ecosystems, and…
Author(s): Janine Rice, Tim Bardsley, Pete Gomben, Dustin Bambrough, Stacey Weems, Allen Huber, Linda A. Joyce
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Recent studies have highlighted the potential of linking fire behaviour to plant ecophysiology as an improved route to characterising severity, but research to date has been limited to laboratory-scale investigations. Fine-scale fire behaviour…
Author(s): Aaron M. Sparks, Alistair M. S. Smith, Alan F. Talhelm, Crystal A. Kolden, Kara M. Yedinak, Daniel M. Johnson
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