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3,327 results found
Rural areas of the Pacific Northwest experienced a dramatic growth in population during the late 1980s to early 1990s. This growth was fueled by both push and pull factors, including environmental and natural resource based amenities. Such growth has not only stressed the capacity of rural counties…
Author(s): Stephen F. McCool, Linda E. Kruger
Keywords: Human migration, population growth, natural resource management, environmental amenities, social and environmental change, population dynamics
Source: Gen. Tech. Rep. PNW-GTR-580. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 19 p
Year: 2003
To assess values of air quality and visibility at risk from wildland fire in the United States, we generated a 40-year database that includes twice daily values of wind, mixing height, and a ventilation index that is the product of windspeed and mixing height. The database provides the first…
Author(s): Sue A. Ferguson, Steven J. McKay, David E. Nagel, Trent Piepho, Miriam L. Rorig, Casey Anderson, Lara Kellogg
Keywords: ventilation climate information system, ventilation index, air quality, visibility, mixing height, windspeed, wind direction, smoke
Source: Res. Pap. PNW-RP-550. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 59 p
Year: 2003
The National Wildfire Coordinating Group's (NWCG) Fire Use Working Team has assumed overall responsibility for sponsoring the development and production of this revised Smoke Management Guide for Prescribed and Wildland Fire (the "Guide"). The Mission Statement for the Fire Use Working Team…
Author(s): Colin C. Hardy, Roger D. Ottmar, Janice L Peterson, John E. Core, Paula Seamon
Keywords: smoke, prescribed fire, wildland fire
Source: PMS 420-2. NFES 1279. Boise, ID: National Wildfire Coodination Group. 226 p
Year: 2001
Small-log utilization or thinning operations followed by a fuel treatment such as prescribed fire can be used to change the composition and structure of fuelbeds, thereby mitigating deleterious fire effects and reducing the potential for catastrophic wildfires in some forested landscapes. We are…
Author(s): Roger D. Ottmar, Clinton S. Wright
Keywords: fuel characteristics, fuel loading, fire management, fire modeling, prescribed fire, small-log utilization, thinning
Source: In: Baumgartner, D.M.; Johnson, L.R.; DePuit, E.J., eds. Proceedings small diameter timber: resource management, manufacturing, and markets. [Pullman, WA]: [Washington State University Cooperative]: 63-73
Year: 2002
We compared two methods of detecting presence of swift fox: smoked-plate scent stations and spotlight counts. Tracks were counted on ten 1-mile (1.6-km) transects with bait/tracking plate stations every 0.1 mile (0.16 km). Vehicle spotlight counts were conducted on the same transects. Methods were…
Author(s): Daniel W. Uresk, Kieth E. Severson, Jody Javersak
Keywords: swift fox, Vulpes velox, monitoring techniques, track counts, spotlight counts, smoked plates, South Dakota
Source: Res. Pap. RMRS-RP-39. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 5 p.
Year: 2003
The BehavePlus fire modeling system is a program for personal computers that is a collection of mathematical models that describe fire and the fire environment. It is a flexible system that produces tables, graphs, and simple diagrams. It can be used for a multitude of fire management applications…
Author(s): Patricia L. Andrews, Collin D. Bevins, Robert C. Seli
Keywords: Fire behavior, fire spread, fire intensity, computer program
Source: Gen. Tech. Rep. RMRS-GTR-106 Revised. Ogden, UT: Department of Agriculture, Forest Service, Rocky Mountain Research Station. 132p.
Year: 2005
Natural ponderosa pine fuels can be safely burned with air temperatures between 55° and 75°
Author(s): Michael G. Harrington
Keywords: fuel reduction, hazard reduction, burning prescription, Pinus ponderosa var. arizonica
Source: Res. Note RM-RN-402. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 7 p.
Year: 1981
Arizona's natural ponderosa pine stands are characterized by open, mature groups and adjacent closed, dense thickets. The open structure of the mature groups permits a warm, dry environment, resulting in very low fuel moisture during much of the fire season and creating high ignition and fire…
Author(s): Michael G. Harrington
Keywords: fuel loadings, stand characteristics, fire behavior potential, Pinus ponderosa var. arizonica
Source: Res. Note RM-RN-418. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 6 p.
Year: 1982
The first volume of the Cerrado photo series is a collection of sites that represent a range of physiognomic forms of the Cerrado in central Brazil including campo limpo, campo sujo, cerrado ralo, cerrado sensu stricto, and cerrado denso. Sites include wide-angle and stereo pair…
Author(s): R.D. Ottmar, R.E. Vihnanek, H.S. Miranda, M.N. Sata, S.M. Andrade
Keywords: Cerrado, photo series, central Brazil
Source: [Brochure]. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.
Year: 2001
Meeting the needs of expanding human populations has changed land use worldwide and presented a biodiversity crisis. Emerging related concerns are threats to native species from homogenization of world flora and the spread of exotic species by human activities (Soule 1990, United States Congress,…
Author(s): Andrew B. Carey
Source: Renewable Resources Journal. 20(1): 13-17.
Year: 2002
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