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Ecosystem

Displaying 5101 - 5120 of 5893 results

The 1988 fires in Yellowstone National Park provided an opportunity to study effects of a large infrequent disturbance on a natural community. This study addressed two questions: (1) How does prefire heterogeneity of the landscape affect postfire…
Author(s): Monica G. Turner, William H. Romme, Robert H. Gardner
Year Published:

Prescribed fire is used as a site treatment after timber harvesting. These fires result in spatial patterns with some portions consuming all of the forest floor material (duff) and others consuming little. Prior to the burn, spatial sampling of duff…
Author(s): Peter R. Robichaud, S. M. Miller
Year Published:

This FEIS species review synthesizes information on the relationship of Amelanchier utahensis (Utah serviceberry) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species…
Author(s): Elena Zlatnik
Year Published:

This FEIS species review synthesizes information on the relationship of Pascopyrum smithii (western wheatgrass) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species…
Author(s): D. A. Tirmenstein
Year Published:

This FEIS species review synthesizes information on the relationship of Elymus glaucus (blue wildrye) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species'…
Author(s): Kathleen A. Johnson
Year Published:

In this chapter, Kantor and Ober introduce a model for dealing with conflicts that arise when employees are resistant to organizational change. Change situations are high stakes situations that cause greater fear and anxiety than low stakes…
Author(s): David Kantor, Steven Ober
Year Published:

This FEIS species review synthesizes information on the relationship of Danthonia intermedia (timber oatgrass) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species…
Author(s): D. A. Tirmenstein
Year Published:

This assessment of Montana used data collected from Forest Inventory and Analysis (FIA) plots across Montana and summarized by forest type, density, and structure. The focus of the analysis was on ponderosa pine/Douglas fir/ dry mixed conifer…
Author(s): Carl E. Fiedler, Charles E. Keegan, Daniel P. Wichman, Stephen F. Arno
Year Published:

National forests of the dry, interior portion of the western United States that are managed by the Department of Agriculture's Forest Service have undergone significant changes over the last century and a half, becoming much denser, with fewer…
Author(s): United States General Accounting Office
Year Published:

Hedysarum (Hedysarum spp.) roots are a primary food of grizzly bears (Ursus arctos) in the Front Ranges of the Canadian Rocky Mountains. I studied the effects of recent forest fire on yellow hedysarum (H. sulphurescens) habitat by comparing root…
Author(s): David Hamer
Year Published:

The “Harvard Method,” as it is sometimes called, emphasizes the importance of easy two-way communication. Yet in both negotiations and daily life, for good reasons or bad, we often don’t talk to each other, and don’t want to. And sometimes when we…
Author(s): Douglas Stone, Bruce Patton, Sheila Heen
Year Published:

Plant mortality and productivity in semiarid grasslands may be affected by the length of time grazing is excluded during the postfire regeneration period. The degree of grazing tolerance for the semiarid bunchgrass species, Festuca idahoensis and…
Author(s): Stephen C. Bunting, Ronald Robberecht, Guillermo E. Defosse
Year Published:

The term riverine landscape implies a holistic geomorphic perspective of the extensive interconnected series of biotopes and environmental gradients that, with their biotic communities, constitute fluvial systems. Natural disturbance regimes…
Author(s): J. V. Ward
Year Published:

This FEIS species review synthesizes information on the relationship of Poa arida (plains bluegrass) to fire--how fire affects the species and its habitat, and fire management considerations. Information is also provided on the species'…
Author(s): Janet L. Howard
Year Published:

Laboratorys studies were conducted to determine the acute toxicity of three fire retardants (Fire‐Trol GTS‐R, Fire‐Trol LCG‐R, and Phos‐Chek D75‐F), and two fire‐suppressant foams (Phos‐Chek WD‐881 and Ansul Silv‐Ex) to early life stages of chinook…
Author(s): Kevin J. Buhl, Steven J. Hamilton
Year Published:

Fuel and vegetation spatial data layers required by the spatially explicit fire growth model FARSITE were developed for all lands in and around the Selway-Bitterroot Wilderness Area in Idaho and Montana. Satellite imagery and terrain modeling were…
Author(s): Robert E. Keane, Janice L. Garner, Kirsten M. Schmidt, Donald G. Long, James P. Menakis, Mark A. Finney
Year Published:

Stream nutrient data were collected both during a wildfire and over a subsequent five-year period. Sampling was from a series of paired watersheds located within and outside of the wildfire. Phosphorus and nitrogen concentrations increased from 5 to…
Author(s): F. Richard Hauer, Craig N. Spencer
Year Published:

Miller Creek, on the Flathead National Forest in northwest Montana, is a demonstration forest, showing up to 30 years of forest change after clearcutting and a wide range of fire treatments in 1967 and 1968. Differences in tree regeneration and…
Author(s): Penelope A. Latham, Raymond C. Shearer, Kevin L. O'Hara
Year Published:

We have developed a spatial database of historic natural fire regimes for the eleven western States to provide information in support of expected national increases in prescribed burning. Fire regimes are described in terms both of frequency and…
Author(s): Colin C. Hardy, James P. Menakis, Donald G. Long, James K. Brown, David L. Bunnell
Year Published:

This policy statement has been prepared in response to plans by some Federal, tribal and State wildland owners/managers to significantly increase the use of wildland and prescribed fires to achieve resource benefits in the wildlands. Many wildland…
Author(s): U.S. Environmental Protection Agency
Year Published: