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Ecosystem

Displaying 2501 - 2520 of 6073 results

Reestablishment of perennial vegetation is often needed after wildfires to limit exotic species and restore ecosystem services. However, there is growing body of evidence that questions if seeding after wildfires increases perennial vegetation and…
Author(s): Kirk W. Davies, Jonathan D. Bates, Chad S. Boyd
Year Published:

Climate influences the ecosystem services we obtain from forest and rangelands. Climate is described by the long-term characteristics of precipitation, temperature, wind, snowfall, and other measures of weather that occur over a long period in a…
Author(s): Linda A. Joyce, Marian Talbert, Darrin Sharp, Jeffrey T. Morrisette, John Stevenson
Year Published:

Wildfire in declining whitebark pine forests can be a tool for ecosystem restoration or an ecologically harmful event. This document presents a set of possible wildfire management practices for facilitating the restoration of whitebark pine across…
Author(s): Robert E. Keane
Year Published:

Key message: We describe a modeling system that enables detailed, 3D fire simulations in forest fuels. Using data from three sites, we analyze thinning fuel treatments on fire behavior and fire effects and compare outputs with a more commonly used…
Author(s): Russell A. Parsons, F. Pimont, Lucas Wells, Greg M. Cohn, William Matt Jolly, Francois P. deColigny, Eric Rigolot, Jean-Luc Dupuy, William E. Mell, Rodman Linn
Year Published:

Climate change is increasing drought and fire activity in many fire-prone regions including the western USA and circumpolar boreal forest. These changes highlight the need for improved understanding of how multiple disturbances impact trees in these…
Author(s): Aaron M. Sparks, Alan F. Talhelm, Raquel Partelli Feltrin, Alistair M. S. Smith, Daniel M. Johnson, Crystal A. Kolden, Luigi Boschetti
Year Published:

The use of distributed temperature sensing (DTS) for ecological applications has increased rapidly in the last 6 years. Here we demonstrate the first use of DTS to measure soil temperatures during a fuel reduction burn – in an urban grassy Tuart–…
Author(s): Ryan Tangney, Nader A. Issa, David J. Merritt, John N. Callow, Ben P. Miller
Year Published:

Knowledge of historical forest conditions and disturbance regimes improves our understanding of landscape dynamics and provides a frame of reference for evaluating modern patterns, processes, and their interactions. In the western United States,…
Author(s): R. Keala Hagmann, Jens T. Stevens, Jamie M. Lydersen, Brandon M. Collins, John J. Battles, Paul F. Hessburg, Carrie R. Levine, Andrew G. Merschel, Scott L. Stephens, Alan H. Taylor, Jerry F. Franklin, Debora L. Johnson, K. Norman Johnson
Year Published:

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:

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
Year Published:

Downed woody material (DWM) is a key component in forest ecosystems with age, structure, and disturbance described as primary factors that influence DWM dynamics. In particular, much emphasis is placed on large coarse woody debris (CWD). Fine woody…
Author(s): Andrew D. Giunta, John D. Shaw
Year Published:

Background: Soil properties have important effects on fire occurrence and spread, but soils are often overlooked in fire prediction models. Quantifying soil−fire linkages is limited by information in conventional soil maps, but digital soil mapping…
Author(s): Matthew R. Levi, Brandon T. Bestelmeyer
Year Published:

The structures, patterns, and processes of the forests of the world develop from ecological interactions among hugely diverse types of organisms interacting with environmental factors at specific places and times on the Earth’s surface. The science…
Author(s): Dan Brinkley, Mark A. Adams, Todd Fredericksen, Jean Paul Laclau, Harri Mäkinen, Cindy E. Prescott
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:

This synthesis summarizes information available in the scientific literature on historical patterns and contemporary changes in fuels and fire regimes in mountain big sagebrush communities. This literature suggests that presettlement fires in the…
Author(s): Robin J. Innes
Year Published:

Whitebark pine (Pinus albicaulis Engelm.) is a foundation species of high elevation forest ecosystems in the Cascade Mountain Range of Oregon, Washington, and British Columbia. We examined fire evidence on 55 fire history sites located in the…
Author(s): Michael P. Murray, Joel Siderius
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
Year Published:

The National Association of State Foresters (NASF) and the Coalition of Prescribed Fire Councils (CPFC) worked collaboratively to produce the 2018 National Prescribed Fire Use Survey Report. Since 2012, this report has been compiled every three…
Author(s): Mark A. Melvin
Year Published:

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
Year Published:

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:

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: