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Ecosystem

Displaying 3181 - 3200 of 5894 results

Rapid advances in cellular phone technology have transformed portable telephones into “smart” phones; powerful, portable personal computers equipped with Global Positioning System (GPS), cameras, and a suite of tools…
Author(s): Jim Riddering, Zachary A. Holden, William Matt Jolly, Allen Warren
Year Published:

Downscaled climate models provide projections of how climate change may exacerbate the local impacts of natural hazards. The extent to which people facing exacerbated hazard conditions understand or respond to climate-related changes to local…
Author(s): Hannah Brenkert-Smith, James R. Meldrum, Patricia A. Champ
Year Published:

Recent increases in area burned in the western U.S. have raised concerns about the resilience of forests to large wildfires, particularly in dry mixed-conifer forests, where climate change and 20th-century land management have altered species…
Author(s): Philip E. Higuera, Kerry Kemp
Year Published:

This FEIS species review synthesizes information on the relationship of Polystichum munitum (western sword fern) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species…
Author(s): Kris Zouhar
Year Published:

As the size and extent of wildfires has increased in recent decades, so has the cost and extent of post-fire management, including seeding and salvage logging. However, we know little about how burn severity, salvage logging, and post-fire seeding…
Author(s): Penelope Morgan, Marshell Moy, Christine A. Droske, Leigh B. Lentile, Sarah A. Lewis, Peter R. Robichaud, Andrew T. Hudak, Christopher Jason Williams
Year Published:

Burn severity as inferred from satellite-derived differenced Normalized Burn Ratio (dNBR) is useful for evaluating fire impacts on ecosystems but the environmental controls on burn severity across large forest fires are both poorly understood and…
Author(s): Donovan Birch, Penelope Morgan, Crystal A. Kolden, John T. Abatzoglou, Gregory K. Dillon, Andrew T. Hudak, Alistair M. S. Smith
Year Published:

The climate record of Priest River Experimental Forest has the potential to provide a century-long history of northern Rocky Mountain forest ecosystems. The record, which began in 1911 with the Benton Flat Nursery control weather station, included…
Author(s): Wade T. Tinkham, Robert Denner, Russell T. Graham
Year Published:

Fire is widely recognized as a critical ecological and evolutionary driver that needs to be at the forefront of land management actions if conservation targets are to be met. However, the prevailing view is that prescribed fire is riskier than other…
Author(s): Dirac Twidwell, Carissa L. Wonkka, Michael T. Sindelar, John R. Weir
Year Published:

Wildland fire management has risen to the forefront of land management and now receives greater social and political attention than ever before. As we progress through the 21st century, these areas of attention are continually presenting challenges…
Author(s):
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Modeling the behavior of crown fires is challenging due to the complex set of coupled processes that drive the characteristics of a spreading wildfire and the large range of spatial and temporal scales over which these processes occur. Detailed…
Author(s): Chad M. Hoffman, J. Ziegler, Rodman Linn, William E. Mell, Carolyn Hull Sieg, F. Pimont
Year Published:

The aims of this research were to develop and test a scale used to measure leadership in wildland firefighting using two samples of USA wildland firefighters. The first collection of data occurred in the spring and early summer and consisted of an…
Author(s): Alexis L. Waldron, David P. Schary, Bradley J. Cardinal
Year Published:

Climate change is likely to increase the threat of wild fires, and little is known about how wild fires affect health in exposed communities. A better understanding of the impacts of the resulting air pollution has important public health…
Author(s): Jia C. Liu, Gavin Pereira, Sarah A. Uhl, Mercedes Bravo, Michelle L. Bell
Year Published:

1. Anthropogenic global change compromises forest resilience, with profound impacts to ecosystem functions and services. This synthesis paper re flects on the current understanding of forest resilience and potential tipping points under environmental…
Author(s): Christopher P. O. Reyer, Niels Brouwers, Anja Rammig, Barry W. Brook, Jackie Epila, Robert F. Grant, Milena Holmgren, Fanny Langerwisch, Sebastian Leuzinger, Wolfgang Lucht, Belinda Medlyn, Marion Pfeifer, Jorg Steinkamp, Mark C. Vanderwel, Hans Verbeeck, Dora M. Villela
Year Published:

Analyses to identify and relate trends in wildfire activity to factors such as climate, population, land use or land cover and wildland fire policy are increasingly popular in the United States. There is a wealth of US wildfire activity data…
Author(s): Karen C. Short
Year Published:

Several post-wildfire debris flows and other landslides occurred after the extreme wildfire season of 2003 in the southern interior of British Columbia. Such events had not been previously reported in Canada, although they are common in lower…
Author(s): Peter Jordan
Year Published:

Hazardous fuel reduction treatments conducted both through prescribed fire and mechanical means are a critical part of the mitigation of wildland fire risk in the United States. The US Federal Government has spent an average of $500t million each…
Author(s): Eric Mueller, Nick Skowronski, Kenneth L. Clark, Robert L. Kremens, Michael R. Gallagher, Jan C. Thomas, M. El Houssami, Alexander I. Filkov, Bret W. Butler, John L. Hom, William E. Mell, Albert Simeoni
Year Published:

ABSTRACT Aim: Determine if differences in the climatic niche between conspecific adult and juvenile trees of the western Unites States vary by species traits and to assess if forest canopies moderate the sensitivity of juvenile trees to climatic…
Author(s): Solomon Z. Dobrowski, Alan Swanson, John T. Abatzoglou, Zachary A. Holden, Hugh Safford, Michael K. Schwartz, Daniel G. Gavin
Year Published:

We develop a novel risk assessment approach that integrates complementary, yet distinct, spatial modeling approaches currently used in wildfire risk assessment. Motivation for this work stems largely from limitations of existing stochastic wildfire…
Author(s): Matthew P. Thompson, Julie W. Gilbertson-Day, Joe H. Scott
Year Published:

Ecological niche models predict plant responses to climate change by circumscribing species distributions within a multivariate environmental framework. Most projections based on modern bioclimatic correlations imply that high-elevation species are…
Author(s): Virginia Iglesias, Teresa R. Krause, Cathy L. Whitlock
Year Published:

Many semi-arid plant communities in western North America are dominated by big sagebrush. These ecosystems are being reduced in extent and quality due to economic development, invasive species, and climate change. These pervasive modifications have…
Author(s): Daniel Schlaepfer, Kyle A. Taylor, Victoria E. Pennington, Kellen N. Nelson, Trace E. Martyn, Caitlin M. Rottler, William Lauenroth, John Bradford
Year Published: