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Ecosystem

Displaying 4781 - 4800 of 6073 results

The ponderosa pine ecosystems of the West have change dramatically since Euro-American settlement 140 years ago due to past land uses and the curtailment of natural fire. Today, ponderosa pine forests contain overabundance of fuel, and stand…
Author(s): Stephen A. Fitzgerald
Year Published:

This state-of-knowledge review about the effects of fire on soils and water can assist land and fire managers with information on the physical, chemical, and biological effects of fire needed to successfully conduct ecosystem management, and…
Author(s): Daniel G. Neary, Kevin C. Ryan, Leonard F. DeBano
Year Published:

ANNOTATION: This document synthesizes the relevant scientific knowledge that can assist fuel-treatment projects on national forests and other public lands and contribute to National Environmental Policy Act (NEPA) analyses and other assessments. It…
Author(s): David L. Peterson, Morris C. Johnson, James K. Agee, Theresa B. Jain, Donald McKenzie, Elizabeth D. Reinhardt
Year Published:

Quantitative fire risk analysis depends on characterizing and combining fire behavior probabilities and effects. Fire behavior probabilities are different from fire occurrence statistics (historic numbers or probabilities of discovered ignitions)…
Author(s): Mark A. Finney
Year Published:

Accident investigators at any level are challenged with identifying causal factors and making preventative recommendations. This task can be particularly complicated considering that 70-80% of accidents are associated with human error. Due to…
Author(s): Michelle Ryerson, Chuck Whitlock
Year Published:

Habitats and populations of greater sage-grouse (Centrocercus urophasianus) have declined throughout western North America in response to a myriad of detrimental land uses. Successful restoration of this species' habitat, therefore, is of keen…
Author(s): Michael J. Wisdom, Mary M. Rowland, Miles A. Hemstrom, Barbara C. Wales
Year Published:

This paper is an executive summary of concepts presented in a slide show presentation by Ted Putnam at the 8th Annual Wildland Fire Safety Summit in Missoula, Montana (April 2005). Putnam reviews the eastern notion of the mind, and makes suggestions…
Author(s): Ted Putnam
Year Published:

Successful fire exclusion in the 20th century has created severe fire problems across the West. Not every forest is at risk of uncharacteristically severe wildfire, but drier forests are in need of active management to mitigate fire hazard. We…
Author(s): James K. Agee, Carl N. Skinner
Year Published:

Quaking aspen (Populus tremuloides Michx.) is a long-lived clonal species in which many genetically identical stems (ramets) arise from a common root system. Establishment by seed is extremely rare in the Rocky Mountain region, where most…
Author(s): William H. Romme, Monica G. Turner, Gerald A. Tuskan, Rebecca A. Reed
Year Published:

The Scripps Experimental Climate Prediction Center has been routinely making regional forecasts of atmospheric elements and fire danger indices since 27 September 1997. This study evaluates these forecasts using selected remote automated weather…
Author(s): Hauss J. Reinbold, John O. Roads, Timothy J. Brown
Year Published:

Prescribed burning in Theodore Roosevelt National Park has played an important role in maintaining a natural ecosystem. However, changes in plant community dynamics caused by burning may have led to an invasion of weedy species such as Canada…
Author(s): Andrea J. Travnicek, Rodney G. Lym, Chad Prosser
Year Published:

The moist, cold, and dry forests of the Inland Northwest occupy approximately 144 million acres. Ponderosa pine, lodgepole pine, western white pine, western larch, and Douglas-fir are usually the preferred commercial species of the area. These early…
Author(s): Russell T. Graham, Theresa B. Jain, Phil Cannon
Year Published:

Solar radiation has long been recognized as a major component of the energy budget of streams, and modeling of stream temperature across stream basins requires estimates of riparian stream shade over extensive areas. A variety of methods are…
Author(s): Charles H. Luce, B. Gutierrez-Teira, David E. Nagel
Year Published:

Whitebark pine (Pinus albicaulis Engelm.), an important component of high elevation ecosystems in the western United States and Canada, is declining due to fire exclusion, white pine blister rust (Cronartium ribicola J.C. Fisch.), and mountain pine…
Author(s): Kristen M. Waring, Diana L. Six
Year Published:

We examined home range size of Black-backed Woodpeckers (Picoides arcticus) in burned ponderosa pine (Pinus ponderosa) / Douglas-fir (Pseudotsuga menziesii) forests of southwestern Idaho during 2000 and 2002 (6 and 8 years following fire). Home…
Author(s): Jonathan G. Dudley
Year Published:

Hillside hollows which produced bulking debris flows in southwestern Idaho in 2003-2005 consistently show a stair-step morphology with vertical risers and planar, roughly horizontal treads. We propose a process model of step formation by plunging…
Author(s): C. W. Welcker, John M. Buffington, Charles H. Luce, J. A. McKean
Year Published:

Threat from wildfire can be greatly minimized through proactive efforts that reduce and slow spread through use of green strips or fuel breaks, and decrease fire volatility by reducing fuel load. This results in greater safety to fire fighters and…
Author(s): Jennifer L. Vollmer
Year Published:

A series of syntheses were commissioned by the USDA Forest Service to aid in fuels mitigation project planning. This synthesis focuses on research addressing aesthetic considerations of fuels management. A general finding is that fuels management…
Author(s): Robert L. Ryan
Year Published:

Alternative silvicultural treatments such as thinning can restore the productivity and diversity of forested watersheds and reduce wildfire hazards, but the hydrologic effects of these treatments are not well defined. We evaluated the effect of even…
Author(s): Scott W. Woods, Ward W. McCaughey, Robert S. Ahl, Jason Sappington
Year Published:

This FEIS species review synthesizes information on the relationship of Galium aparine (stickywilly) to fire--how fire affects the species and its habitat, effects of the species on fuels and fire regimes, and fire management considerations.…
Author(s): Corey L. Gucker
Year Published: