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Ecosystem

Displaying 2561 - 2580 of 6067 results

Historical evidence suggests natural disturbances could allow more forest persistence, than expected from models, over 40 yr of transition to the net‐zero emissions needed to limit warming to <2.0°C (e.g., Paris Agreement). Forests must…
Author(s): William L. Baker
Year Published:

The NWCG Smoke Management Guide for Prescribed Fire contains information on prescribed fire smoke management techniques, air quality regulations, smoke monitoring, modeling, communication, public perception of prescribed fire and smoke, climate…
Author(s): Janice L. Peterson, Peter Lahm, Mark Fitch, Michael H. George, Dennis V. Haddow, Mark A. Melvin, Joshua C. Hyde, Ellen Eberhardt
Year Published:

In the northern Rocky Mountains of the U.S. and Canada, whitebark pine (Pinus albicaulis Engelm.) is a functionally important species in treeline communities. The introduced fungal pathogen Cronartium ribicola, which causes white pine blister rust,…
Author(s): Aaron C. Wagner, Diana F. Tomback, Lynn M. Resler, Elizabeth R. Pansing
Year Published:

Statistically defensible information on vegetation conditions is needed to guide rangeland management decisions following disturbances such as wildfire, often for heterogeneous pastures. Here we evaluate sampling effort needed to achieve a robust…
Author(s): Cara Applestein, Matthew J. Germino, David S. Pilliod, Matthew R. Fisk, Robert S. Arkle
Year Published:

This work investigates gap winds in a steep, deep river canyon prone to wildland fire. The driving mechanisms and the potential for forecasting the gap winds are investigated. The onset and strength of the gap winds are found to be correlated to the…
Author(s): Natalie S. Wagenbrenner, Jason M. Forthofer, Chris Gibson, Abby Indreland, Brian K. Lamb, Bret W. Butler
Year Published:

Fire radiative energy density (FRED, J m−2) integrated from fire radiative power density (FRPD, W m−2) observations of landscape-level fires can present an undersampling problem when collected from fixed-wing aircraft. In the present study, the…
Author(s): C. Klauberg, Andrew T. Hudak, Benjamin C. Bright, Luigi Boschetti, Matthew B. Dickinson, Robert L. Kremens, C. A. Silva
Year Published:

Most ecotones include structural and taxonomic elements from both adjacent communities, but it remains unclear how these elements function and interact within ecotones. We investigated long‐term plant community responses to wildfire in a 7000‐km2…
Author(s): Lauren M. Porensky, Justin D. Derner, David W. Pellatz
Year Published:

People have inhabited the Northern Rocky Mountains of the United States since the close of the last Pleistocene glacial period, some 14,000 years B.P. (Fagan 1990; Meltzer 2009). Evidence of this ancient and more recent human occupation is found…
Author(s): Carl M. Davis
Year Published:

Stand structure and fuel mass were measured in 2011, 13 years after logging of a seasonally dry, ponderosa pine-dominated forest that had burned severely in the 1996 Summit Wildfire, Malheur National Forest, northeastern Oregon, U.S.A. Data are…
Author(s): James D. McIver, Roger D. Ottmar
Year Published:

Understanding how annual climate variation affects population growth rates across a species' range may help us anticipate the effects of climate change on species distribution and abundance. We predict that populations in warmer or wetter parts of a…
Author(s): Andrew R. Kleinhesselink, Peter B. Adler
Year Published:

The purpose of this study was to examine the pattern of urinary protein excretion induced by 3 consecutive days of wildland firefighting. Eighteen male active-duty military personnel served as the participants. All testing on the 3 consecutive days…
Author(s): N. Yasuda, B.C. Ruby
Year Published:

Historically, the ponderosa and dry mixed-conifer forests of the Colorado Front Range were more open and grassy, and trees of all size classes were found in a grouped arrangement with sizable openings between the clumps. As a legacy of fire…
Author(s): Susan Miller, Rob Addington, Gregory H. Aplet, Michael A. Battaglia, Anthony S. Cheng, Jonas A. Feinstein, Jeffrey L. Underhill
Year Published:

For millennia, wildfires have markedly influenced forests and non-forested landscapes of the western United States (US), and they are increasingly seen as having substantial impacts on society and nature. There is growing concern over what kinds and…
Author(s): Max A. Moritz, Christopher Topik, Craig D. Allen, Paul F. Hessburg, Penelope Morgan, Dennis C. Odion, Thomas T. Veblen, Ian M. McCullough
Year Published:

Faster than real-time wildland fire simulators are being increasingly adopted by land managers to provide decision support for tactical wildfire management and assist with strategic risk planning. These simulators are typically based on simple…
Author(s): Thomas J. Duff, Jane G. Cawson, Brett Cirulis, Petter Nyman, Gary J. Sheridan, Kevin G. Tolhurst
Year Published:

Acute and chronic exposure to wildfire smoke can cause numerous documented cardiopulmonary effects, although determining the casual components within the thousands of different chemicals found in both the particle and gas phases remains a…
Author(s): M. Ian Gilmour, Yong Ho Kim, Mark Higuchi, Michael Hays, Aimen Farraj, David DeMarini
Year Published:

Wildfires naturally occur worldwide, however the potential disruption to ecosystem services from subsequent post-fire flooding and erosion often necessitates a response from land managers. The impact of high severity wildfire on infiltration and…
Author(s): Sierra S. Larson-Nash, Peter R. Robichaud, Frederick B. Pierson, Corey A. Moffet, C. Jason Williams, Kenneth E. Spaeth, Robert E. Brown, Sarah A. Lewis
Year Published:

Wireless Sensor Networks (WSNs) have experienced phenomenal growth over the past decade. They are typically deployed in human-inaccessible terrains to monitor and collect time-critical and delay-sensitive events. There have been several studies on…
Author(s): Mian Ahmad Jan, Priyadarsi Nanda, Xiangjian He, Ren Ping Liu
Year Published:

Purpose – This paper aims to focus on research regarding organizational learning (OL) and knowledge management (KM), and to specifically investigate whether OL has been conceptually absorbed by KM. Design/methodology/approach – This study is based…
Author(s): Delio Ignacio Castaneda, Luisa Fernanda Manrique, Sergio Cuellar
Year Published:

Accordingly, the average annual risk of a wildfire destroying a home in the WUI was less than 1 onehundredth of 1 percent. Of course, the risk is much higher in fire-prone parts of the South and West, but so are expectations that government…
Author(s): Hutch Brown
Year Published:

Whitebark pine (Pinus albicaulis Engelm.), an ecologically important tree species in high-elevation ecosystems of western North America, is threatened by white pine blister rust (Cronartium ribicola Fischer) and increased pressure from mountain pine…
Author(s): Jeremy T. Amberson, Megan P. Keville, Cara R. Nelson
Year Published: