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Ecosystem

Displaying 5781 - 5800 of 6066 results

Safety and danger are usually seen as opposites that exclude one another in practice. Safety is often seen as the absence of danger, and danger is often seen as the absence of safety. This book, however, argues that the two conditions are…
Author(s): Aaron Wildavsky
Year Published:

Summarizes recent literature on the effects of fire on sagebrush-grass vegetation. Also outlines procedures and considerations for planning and conducting prescribed fires and monitoring effects. Includes a comprehensive annotated bibliography of…
Author(s): Stephen C. Bunting, Bruce M. Kilgore, Charles L. Bushey
Year Published:

Postfire succession in juniper and pinyon-juniper is primarily dependent upon the potential of the site, the preburn plant community and the characteristics of the fire. The successful use of prescribed burning is dependent upon the appropriate…
Author(s): Stephen C. Bunting
Year Published:

A moderate August 1984 rainstorm produced substantial debris flows from tributaries of Beaver Creek, a small Missouri River tributary located near Helena, Montana. The debris flows occurred only in the parts of the drainage that had been burned by…
Author(s): C. Parrett
Year Published:

Nearly all wildfires are extinguished when they are still small. The 3-5% that get out of control cause 95% of all wildfire-related costs and damages (Dodge 1972, Wilson 1985). There are two ways to deal with these problem fires. One practice is to…
Author(s): James M. Saveland
Year Published:

Forty-six debris flows in a fifth-order basin in the Oregon Coast Range, U.S.A., were studied to determine the role and significance of debris flows in sediment routing. Dating of charcoal from basal colluvium in three bedrock hollows and in one…
Author(s): Lee E. Benda, Thomas Dunne
Year Published:

Summarizes the objectives, prescriptions, and techniques used in prescribed burning beneath the canopy of ponderosa pine stands, and stands of ponderosa pine mixed with western larch, Douglas-fir, and grand fir. Information was derived from 12…
Author(s): Bruce M. Kilgore, George A. Curtis
Year Published:

Includes more than 90 papers bringing together research accomplishments of the last 10 years including ongoing research on the ecology and management of pinyon-juniper ecosystems. Scientist and management points of view are presented.
Author(s): Richard L. Everett
Year Published:

This paper contains information from diverse sources on the regeneration capabilities, response to fire, and utilization of shrub species important or common to dry forest habitat types in Montana and Idaho. Response to fire is classified by…
Author(s): Nonan V. Noste, Charles L. Bushey
Year Published:

Vegetational recovery was compared on firelines constructed in three ground fuel cover types, using conventional hand tools and two types of fireline explosives. Measurement of ground coverage of shrub and herb species before and after disturbance…
Author(s): Timothy E. Paysen, Richard J. Barney
Year Published:

Duration and intensity of western spruce budworm (Christoneura occidentalis Freeman) outbreaks have increased with the decrease in forest fire frequency in Montana since 1910. Frequency of budworm outbreaks, however, was not affected. Feeding…
Author(s): Leslie Anderson, Clinton E. Carlson, Ronald H. Wakimoto
Year Published:

Discusses fire as an ecological factor for forest habitat types occurring in central Idaho. Identifies "Fire Groups" of habitat types based on fire's role in forest succession. Considerations for fire management are suggested.
Author(s): Marilyn F. Crane, William C. Fischer
Year Published:

Means, standard deviations, and quartiles of fuel loadings were determined for litter, for downed woody material of 0 to one-fourth inch, one-fourth to 1 inch, 0 to 1 inch, and 1 to 3 inches, for herbaceous vegetation, and for shrubs by cover types…
Author(s): James K. Brown, Collin D. Bevins
Year Published:

Describes a method for appraising fuels and fire behavior potential in aspen forests to guide the use of prescribed fire and the preparation of fire prescriptions. Includes an illustrated classification of aspen fuels; appraisals of fireline…
Author(s): James K. Brown, Dennis Simmerman
Year Published:

This issue of Fire Management Notes contains articles on fire shelters, fire behavior, the Butte Fire (Idaho 1985), crew mobilization, and using prescribed fire. Forest Fire Shelters Save Lives Art, Jukkala and Ted Putnam Methods for Predicting…
Author(s):
Year Published:

An increment borer is a precision instrument specially designed to extract a thin cylinder of wood from a tree, shrub, log or pole. It is available in a variety of sizes ranging in length from 4 inches to 40 inches. Although the increment borer is…
Author(s): James K. Agee, Mark H. Huff
Year Published:

Field experiments were conducted to examine the effects of disturbance frequency on invertebrates and periphyton colonizing bricks in a third order Rocky Mountain (USA) stream. After an initial colonization period (30 days), sets of bricks were…
Author(s): Christopher T. Robinson, G. Wayne Minshall
Year Published:

More intensive management could be applied to many young stands in conifer forests of the Northern Rockies. Vast areas are stocked with stands that contain a mixture of conifer species. An important mixed species cover type in…
Author(s): Dennis M. Cole, Wyman C. Schmidt
Year Published:

Whitebark pine (Pinusa albicaulis)s found at timberline and in subalpine forests from central California and western Wyoming north to British Columbia and Alberta. This speciesh as been of little interest for commercial timber, but in recent years…
Author(s): Stephen F. Arno
Year Published:

Two mathematical models are given to determine the best locations for initial attack resources in terms of travel time: a linear programming model and a statistical model. An example for the Clearwater National Forest in Idaho illustrates some of…
Author(s): Romain Mees
Year Published: