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Ecosystem

Displaying 2341 - 2360 of 5896 results

Accurate characterization of Carbon (C) consequences of forest disturbances and management is critical for informed climate mitigation and adaptation strategies. While research into generalized properties of the forest C cycle informs policy and…
Author(s): Feng A. Zhao, Sean P. Healey, Chengquan Huang, James P. McCarter, Chris Garrard, Sara A. Goeking, Zhiliang Zhu
Year Published:

Grid-independent rate of spread results from a physics-based simulation are presented. Previously, such a numerical benchmark has been elusive owing to computational restrictions. The grid-converged results are used to systematically construct…
Author(s): K. A. M. Moinuddin, W. Mell
Year Published:

Averaging tree-ring measurements from multiple individuals is one of the most common procedures in dendrochronology. It serves to filter out noise from individual differences between trees, such as competition, height, and micro-site effects, which…
Author(s): Mario Trouillier, Marieke van der Maaten-Theunissen, Jill E. Harvey, David Wurth, Martin Schnittler, Martin Wilmking
Year Published:

To enhance understanding of how climate and humans influenced historical fire occurrence in the montane forests of Jasper National Park, we crossdated fire-scar and tree age samples from 172 plots. We tested effects of drought and climatic variation…
Author(s): Raphael D. Chavardes, Lori D. Daniels, Ze'ev Gedalof, David W. Andison
Year Published:

Wildfires, insect outbreaks, and windstorms are increasingly common forest disturbances. Post-disturbance management often involves salvage logging, i.e., the felling and removal of the affected trees; however, this practice may represent an…
Author(s): Alexandro B. Leverkus, José María Rey Benayas, Jorge Castro, Dominique Boucher, Stephen Brewer, Brandon M. Collins, Daniel C. Donato, Shawn Fraver, Barbara E. Kishchuk, Eun-Jae Lee, David B. Lindenmayer, Emanuele Lingua, Ellen Macdonald, Raffaella Marzano, Charles C. Rhoades, Alejandro A. Royo, Simon Thorn, Joseph W. Wagenbrenner, Kaysandra Waldron, Thomas Wohlgemuth, Lena Gustafsson
Year Published:

An experimental and numerical study was carried out to assess the performance of the different submodels and parameters used to describe the burning dynamics of wildfires. A multiphase formulation was used and compared to static fires of dried pitch…
Author(s): M. El Houssami, A. Lamorlette, D. Morvan, Rory Hadden, Albert Simeoni
Year Published:

This coarse-resolution assessment suggests that much of the West’s wildfire problem traces to the deteriorated condition of its dry ponderosa pine sites.
Author(s): Jerry T. Williams, Matthew Panunto
Year Published:

We present a direct broadcast (DB) rapid response burned area mapping algorithm for Visible Infrared Imaging Radiometer Suite (VIIRS) data that combines products driven by the spectral signal of fire-affected areas from both emissive and reflective…
Author(s): Shawn P. Urbanski, Bryce L. Nordgren, Carl Albury, Brenna Schwert, David Peterson, Brad Quayle, Wei Min Hao
Year Published:

Large fires have tremendous effects on the characteristics of water-producing watersheds and the quality of the water coming out of them. This article discusses the effects of wildland fires on water quality and suggests ways of managing fire-prone…
Author(s): Aregai Tecle, Daniel G. Neary
Year Published:

Fire regimes are needed for healthy forest ecosystems, but citizens who live parallel to public forests do not always understand or favour the mechanisms land managers use for fire prevention and preparation. One way that land managers and citizens…
Author(s): Lauren Remenick
Year Published:

Designer niches in which environmental variables are controlled are useful in forest restoration to enhance survival of planted tree seedlings. Here, we evaluate particular manipulated habitats, on site variables, and pre-seedling conditions…
Author(s): Cathy L. Cripps, Genoa Alger, Robert Sissons
Year Published:

A dimensional analysis was performed to correlate the fuel bed fire rate of spread data previously reported in the literature. Under wind condition, six pertinent dimensionless groups were identified, namely dimensionless fire spread rate,…
Author(s): Jiann C. Yang
Year Published:

The 2010 Church’s Park Fire burned beetle-killed lodgepole pine stands in Colorado, including recently salvage-logged areas, creating a fortuitous opportunity to compare the effects of salvage logging, wildfire and the combination of logging…
Author(s): Charles C. Rhoades, Kristen Pelz, Paula J. Fornwalt, Brett Wolk, Anthony S. Cheng
Year Published:

Habitat suitability models can inform forest management for species of conservation concern. Models quantify relationships between known species locations and environmental attributes, which are used to identify areas most likely to support species…
Author(s): Quresh Latif, Victoria A. Saab, Jessica R. Haas, Jonathan G. Dudley
Year Published:

Building resilience to natural disturbances is a key to managing forests for adaptation to climate change. To date, most climate adaptation guidance has focused on recommendations for frequent‐fire forests, leaving few published guidelines for…
Author(s): Joshua S. Halofsky, Daniel C. Donato, Jerry F. Franklin, Jessica E. Halofsky, David L. Peterson, Brian J. Harvey
Year Published:

Increasing air temperature, through its influence on soil moisture, is expected to cause gradual changes in the abundance and distribution of tree, shrub, and grass species throughout the Northern Rockies, with drought tolerant species becoming more…
Author(s): Robert E. Keane, M. F. Mahalovich, Barry Bollenbacher, Mary Manning, Rachel A. Loehman, Theresa B. Jain, Lisa M. Holsinger, Andrew J. Larson
Year Published:

Executive summary: Wildfires are a fact of life for westerners. They mark the beginning of the spring season and have been a keystone architect of biodiverse ecosystems for millennia. While wildfires are not eco-catastrophes, they are a health…
Author(s): Dominick A. DellaSala, Timothy Ingalsbee, Chad T. Hanson
Year Published:

The air quality and fire management communities are faced with increasingly difficult decisions regarding critical fire management activities, given the potential contribution of wildland fires to fine particulate matter (PM2.5). Unfortunately, in…
Author(s): Kelley C. Barsanti, Brian K. Lamb, Robert J. Yokelson
Year Published:

Our knowledge of what animals do when humans aren’t around has steadily increased over the last 50 years. For example, we know now that animals use tools in their daily lives. Chimps use twigs to fish for termites; sea otters break open shellfish on…
Author(s): George Nicholas
Year Published:

Fuel-reduction treatments have been used effectively in dry, fire-adapted forests to reduce risk of high-severity crown fire, but it is less certain if they achieve their ecosystem restoration objectives. To date, there has not been a comprehensive…
Author(s): Jonathan D. Bakker, Charles B. Halpern, Richy J. Harrod, Lauren S. Urgenson, Allison K. Rossman, David W. Peterson
Year Published: