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Displaying 2201 - 2220 of 5663

The Reburn Project was motivated by a need to better understand wildfires as fuel reduction treatments and to assess the impacts of decades of wildland fire suppression activities on forested landscapes. Our study examined three areas, located in…
Author(s): Susan J. Prichard, Paul F. Hessburg, Robert W. Gray, Nicholas A. Povak, R. Brion Salter, Camille Stevens-Rumann, Penelope Morgan
Year Published:

We examined spatial patterns of post-fire regenerating conifers in a Colorado, USA, dry conifer forest 11–12 years following the reintroduction of mixed-severity fire. We mapped and measured all post-fire regenerating conifers, as well as all other…
Author(s): Sparkle L. Malone, Paula J. Fornwalt, Michael A. Battaglia, Marin Chambers, Jose M. Iniguez, Carolyn Hull Sieg
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Crown projection area (CPA) is a critical parameter in assessing inter-tree competition and estimating biomass volume. A multi-layer seeded region growing-based approach to the fully automated assessment of CPA based on 3D-point-clouds derived from…
Author(s): Tim Ritter, Arne Nothdurft
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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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:

Fire and pathogen-induced tree mortality are the two dominant forms of disturbance in Western U.S. montane forests. We investigated the consequences of both disturbance types on the controls of microbial activity in soils from 56 plots across a…
Author(s): Rebecca A. Lybrand, Rachel E. Gallery, Nicole A. Trahan, David Moore
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Recurrent environmental changes often prompt animals to alter their behavior leading to predictable patterns across a range of temporal scales. The nested nature of circadian and seasonal behavior complicates tests for effects of rarer disturbance…
Author(s): Derek B. Spitz, Darren A. Clark, Michael J. Wisdom, Mary M. Rowland, Bruce K. Johnson, Ryan A. Long, Taal Levi
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With fuel moisture content and slope, wind velocity (UW) is one of the major physical parameters that most affects the behaviour of wildland fires. The aim of this short paper was to revisit the relationship between the rate of spread (ROS) and the…
Author(s): D. Morvan, N. Frangieh
Year Published:

Nowadays Earth observation satellites, in particular Landsat, provide a valuable help to forest managers in post-fire operations; being the base of post-fire damage maps that enable to analyze fire impacts and to develop vegetation recovery plans.…
Author(s): Carmen Quintano, Alfonso Fernández-Manso, O. Fernández-Manso
Year Published:

Drought stress is an important consideration for wildlife in arid and semi‐arid regions under climate change. Drought can impact plant and animal populations directly, through effects on their physiology, as well as indirectly through effects on…
Author(s): James F. Saracco, Stephen M. Fettig, George L. San Miguel, David W. Mehlman, Steven K. Albert
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Beginning in the late 1990s, the pine forests of Montana began to experience the largest mountain pine beetle outbreak in recorded history. Large swaths of forests began to turn red, then gray as the beetles ate their way through Pacific Northwest…
Author(s): Dan R. Loeffler, Nathaniel Anderson
Year Published:

Large, high-severity wildfires alter the physical and biological conditions that determine how catchments retain and release nutrients and regulate streamwater quality. The short-term water quality impacts of severe wildfire are often dramatic, but…
Author(s): Charles C. Rhoades, Alex T. Chow, Tim Covino, Timothy S. Fegel, Derek N. Pierson, Allison E. Rhea
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The complex interactions between the inclined terrain and the flow generated by the fire make the slope one of the most influencing factors on fire spread. In order to gain a deeper understanding of the mechanisms involved in wildfires spreading…
Author(s): Frederic Morandini, Xavier Silvani, Jean-Luc Dupuy, Arnaud Susset
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We present TerraClimate, a dataset of high-spatial resolution (1/24°, ~4-km) monthly climate and climatic water balance for global terrestrial surfaces from 1958–2015. TerraClimate uses climatically aided interpolation, combining high-spatial…
Author(s): John T. Abatzoglou, Solomon Z. Dobrowski, Sean A. Parks, Katherine C. Hegewisch
Year Published:

Detection of tree spatial patterns and structural attributes in a forest stand can provide critical information on occurring dynamics, and steer management decisions. However, since tree spatial distribution depends on factors that operate at…
Author(s): Marco Carrer, Daniele Castagneri, Ionel Popa, Mario Pividori, Emanuele Lingua
Year Published:

The biogeochemical and stoichiometric signature of vegetation fire may influence post-fire ecosystem characteristics and the evolution of plant ‘fire traits’. Phosphorus (P), a potentially limiting nutrient in many fire-prone environments, might be…
Author(s): Orpheus M. Butler, James J. Elser, Tom Lewis, Brendan Mackey, Chengrong Chen
Year Published:

In the western United States and elsewhere, the need to change society’s relationship with wildfire is well-recognized. Suppressing fewer fires in fire-prone systems is promoted to escape existing feedback loops that lead to ever worsening…
Author(s): Matthew P. Thompson, Donald G. MacGregor, Christopher J. Dunn, David E. Calkin, John Phipps
Year Published:

This work examines how to adjust the definition of 'dry lightning' in order to optimize the correlation between dry lightning flash count and the climatology of large (>400 km2) lightning‐ignited wildfires over the contiguous United States (CONUS…
Author(s): Brian Vant-Hull, Tollisha Thompson, William Koshak
Year Published:

In western North America ectomycorrhizal fungi are critical to establishment of conifers in low nitrogen soils. Fire can affect both ectomycorrhizal fungi and soil properties, and inoculation with ectomycorrhizal fungi is recommended when planting…
Author(s): Martha L. Jenkins, Cathy L. Cripps, Leslie Gains-Germain
Year Published:

Growing and widespread concern regarding the social and ecological impacts of wildfire has sparked multiple innovations in planning, preparation, and management. Among these innovations are new models of coproduction in which government fire…
Author(s): Emily Jane Davis, Jesse Abrams, James E. Meacham
Year Published: