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Ecosystem

Displaying 2421 - 2440 of 6066 results

A warming climate, fire exclusion, and land cover changes are altering the conditions that produced historical fire regimes and facilitating increased recent wildfire activity in the northwestern United States. Understanding the impacts of changing…
Author(s): Arjan J. H. Meddens, Crystal A. Kolden, James A. Lutz, John T. Abatzoglou
Year Published:

This research investigates the impact of wildfires on watershed flow regimes, specifically focusing on evaluation of fire events within specified hydroclimatic regions in the western United States, and evaluating the impact of climate and…
Author(s): Samuel Saxe, Terri S. Hogue, Lauren Hay
Year Published:

Whitebark pine (Pinus albicaulis Engelm.) forests play a prominent role throughout high-elevation ecosystems in the northern Rocky Mountains, however, they are vanishing from the high mountain landscape due to three factors: exotic white pine…
Author(s): Molly L. Retzlaff, Robert E. Keane, David L.R. Affleck, Sharon M. Hood
Year Published:

Landsat Normalized Difference Vegetation Index (NDVI) is commonly used to monitor post-fire green-up; however, most studies do not distinguish new growth of conifer from deciduous or herbaceous species, despite potential consequences for local…
Author(s): Melanie K. Vanderhoof, Todd J. Hawbaker
Year Published:

The development of frameworks for better-understanding ecological syndromes and putative evolutionary strategies of plant adaptation to fire has recently received a flurry of attention, including a new model hypothesizing that plants have diverged…
Author(s): Helen M. Poulos, Andrew M. Barton, Jasper A. Slingsby, David M. J. S. Bowman
Year Published:

Purpose of Review: I sought to review the contributions of recent literature and prior foundational papers to our understanding of drought and fire. In this review, I summarize recent literature on drought and fire in the western USA and discuss…
Author(s): Jeremy S. Littell
Year Published:

Non‐linear and interacting effects of fire severity and time since fire may help explain how pyrodiversity promotes biodiversity in fire‐adapted systems. We built on previous research on avian responses to fire by investigating how complex effects…
Author(s): Paul J. Taillie, Ryan D. Burnett, Lance J. Roberts, Brent R. Campos, M. Nils Peterson, Christopher E. Moorman
Year Published:

This chapter describes the ecology of important disturbance regimes in the Forest Service, U.S. Department of Agriculture (USFS) Northern Region and the Greater Yellowstone Area, hereafter called the Northern Rockies region, and potential shifts in…
Author(s): Rachel A. Loehman, Barbara J. Bentz, Gregg DeNitto, Robert E. Keane, Mary Manning, Jacob P. Duncan, Joel M. Egan, Marcus B. Jackson, Sandra Kegley, I. Blakley Lockman, Dean E. Pearson, James A. Powell, Steve Shelly, Brytten E. Steed, Paul J. Zambino
Year Published:

The paper reports visualization of the flow of smoke over a flat surface inside of a low-speed wind tunnel. A heating plate flush mounted on the wind tunnel floor simulated a spreading line fire that produces uniform heat flux under constant wind…
Author(s): Nikolay Gustenyov, Nelson K. Akafuah, Ahmad Salaimeh, Mark A. Finney, Sara S. McAllister, Kozo Saito
Year Published:

Extensive high‐severity wildfires have driven major losses of ponderosa pine and mixed‐conifer forests in the southwestern United States, in some settings catalyzing enduring conversions to non‐forested vegetation types. Management interventions to…
Author(s): Ryan B. Walker, Jonathan D. Coop, Sean A. Parks, Laura Trader
Year Published:

The Haines Index is used in wildland fire management to evaluate the potential for ‘large and/or erratic’ fire behaviour. Published in 1988 as the Lower Atmospheric Severity Index, it was widely adopted and has become popular among fire managers,…
Author(s): Brian E. Potter
Year Published:

Management practices since the late 19th century, including fire exclusion and harvesting, have altered the structure of ponderosa pine (Pinus ponderosa Douglas ex P. Lawson & C. Lawson) dominated forests across the western United States. These…
Author(s): Michael A. Battaglia, Benjamin Gannon, Peter M. Brown, Paula J. Fornwalt, Anthony S. Cheng, Laurie S. Huckaby
Year Published:

The boundary between woodlands and shrublands delineates the distribution of the tree biome in many regions across the globe. Woodlands and shrublands interface at multiple spatial scales, and many ecological processes operate at different spatial…
Author(s): Alexandra K. Urza
Year Published:

Weather is an important factor that determines smoke development, which is essential information for planning smoke field measurements. This study identifies the synoptic systems that would favor to produce the desired smoke plumes for the Fire and…
Author(s): Yongqiang Liu, Scott L. Goodrick, Gary Achtemeier
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
Year Published:

Mixed severity wildfires burn large areas in western North America forest ecosystems in most years and this is expected to continue or increase with climate change. Little is understood about vegetation recovery and changing fuel conditions more…
Author(s): Andrew T. Hudak, Beth A. Newingham, Eva K. Strand, Penelope Morgan
Year Published:

Human-started fires represent the vast majority of wildfires in Mediterranean countries. The current expansion of human settlements into fire-prone territories has led to the creation of landscapes where anthropogenic developments merge with…
Author(s): Leone D. Mancini, Mario Elia, Anna Barbati, Luca Salvati, Piermaria Corona, Raffaele Lafortezza, Giovanni Sanesi
Year Published:

Landsat-based fire severity maps have limited ecological resolution, which can hinder assessments of change to specific resources. Therefore, we evaluated the use of pre- and post-fire LiDAR, and combined LiDAR with Landsat-based relative…
Author(s): Michael S. Hoe, Christopher J. Dunn, Hailemariam Temesgen
Year Published:

Wildfire prevention advertisements featuring Smokey Bear represent the longest-standing and most successful government advertising and branding campaign in U.S. history. As the public face of U.S. fire control policy, Smokey Bear uses mass media to…
Author(s): Jesse Minor, Geoffrey A. Boyce
Year Published:

The socio-environmental dimension in wildland fire management is critical for moving towards a baseline of firewise planning. Wildland fire risk planning is a land use planning tool that should be able to keep pace with rapid rates of social and…
Author(s): David Martín Gallego, Eduard Plana Bach, Domingo Molina Terrén
Year Published: