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Displaying 5481 - 5500 of 5651

During the first 3 years after a severe wildfire in 1970, maximum concentrations of nitrate-N (NO3-N) in stream water increased from prefire levels of <0.016 to 0.$6 mg/liter on a burned, unfertilized watershed and to 0.54 and 1.47 mg/liter on…
Author(s): A. R. Tiedemann, J. D. Helvey, T. D. Anderson
Year Published:

ANNOTATION: Relationships between live and dead crown weight and DBH, crown length, tree height, and crown ratio are presented for 11 Rocky Mountain conifers. Also included are partitioned estimates of crown foliage and branchwood. This study shows…
Author(s): James K. Brown
Year Published:

In early September 1975, two clearcuts (14 and 17 acres; 5.7 and 6.9 ha), two sets of 4 small clearcuts (1.5 acres; 0.6 ha each), and one shelterwood cutting (22 acres; 8.9 ha) were broadcast burned principally for seedbed preparation and fuel…
Author(s): Donald K. Artley, Raymond C. Shearer, Robert W. Steele
Year Published:

In preparing a state-of-knowledge review for fire and fauna, our basic reference source was the chapter "Effects of Fire on Birds and Mammals," by J. F. Bendell (1974) in the book "Fire and Ecosystems". In addition to summarizing this 52-page paper…
Author(s): L. Jack Lyon, Hewlette S. Crawford, Eugene Czuhai, Richard L. Fredriksen, R. F. Harlow, Louis J. Metz, Henry A. Pearson
Year Published:

Development of equations for predicting fuel bed depth (called "bulk depth" herein) appropriate for modeling fire behavior in slash is described. Bulk depth (y) was correlated with the expected number of 1/4-to 1-inch-diameter particle…
Author(s): Frank A. Albini, James K. Brown
Year Published:

This report presents tables and equations for estimating total cubic volumes of wood, wood residue, and bark for ponderosa pine, western larch, and Douglas fir. The equations and tables provide a means for estimating wood and bark residue volumes…
Author(s): James L. Faurot
Year Published:

In an area of 21 km2 where fires have produced a mosaic of forest communities, including subalpine fir (Abies lasiocarpa), Engelman spruce (Picea engelmannii) and lodgepole pine, results from 255 track observations, 80 captures of 13 live-trapped…
Author(s): Gary M. Koehler, Maurice G. Hornocker
Year Published:

An improved version is presented of a method previously used [see FA 40, 169]. Instructions are given for: laying out transects; gathering stand data, including documenting fire-scarred trees; sampling fire-scarred trees; laboratory analysis of tree…
Author(s): Stephen F. Arno, Kathy M. Sneck
Year Published:

The purpose of this study which was conducted in 1974 and 1975 was to investigate the effects of the Fitz Creek fire of August, 1973 upon the benthic community of White Cap Creek which was partially surrounded by the bum. Study sections of White Cap…
Author(s): Deborah Cynthia Stefan
Year Published:

Twenty control burns performed with a wide range of fuel loadings and moisture conditions were used to study the effectiveness of old fuel reduction under standing Douglas-fir/larch forest. This paper reports the influence of burning on nutrient…
Author(s): Nellie M. Stark
Year Published:

In a western larch/Douglas-fir forest type in western Montana, 9 spring and 11 fall under story burns were conducted. Multiple regression equations related the number of Vaccinium globulare (blue huckleberry) stems present 1 and 2 years after fire…
Author(s): Melanie Miller
Year Published:

Prescribed burning under mature Larch/Douglas-fir forests produced changes in elemental uptake. Elemental analyses of individual species and existing biomass three years post-burn from hot, medium, and lightly burned sites and unburned controls…
Author(s): Nellie M. Stark, R. Steel
Year Published:

ANNOTATION: A pre-feasibility assessment is an early stage and limited analysis of the probable risks and returns of an investment. Focused on gathering preliminary information, it helps decision makers determine if there is a basis for investing…
Author(s): James K. Brown, J. A. Kendall Snell, David L. Bunnell
Year Published:

Toxicities of four chemical forest fire retardants, Fire-Trol 100 and 931 (ammonium sulfate or polyphosphate with an attapulgite clay thickener) and Phos-Chek 202 A and 259 (diammonium phosphate with a guar gum derivative thickener) were determined…
Author(s): W. W. Johnson, H. O. Sanders
Year Published:

This thesis documents the fire history and assesses the role of fire in the western larch/Douglas-fir forest of the Coram Experimental Forest in northwestern Montana. Primary attention was given to the frequency, areal spread, relative severity, and…
Author(s): Kathy M. Sneck
Year Published:

Guidelines are offered for safe, effective fire treatments in western larch/Douglas-fir forests. Describes procedures for estimating and limiting the scorching of tree crows. Provides a method for predicting percentage of the forest floor that will…
Author(s): Rodney A. Norum
Year Published:

Reviews current knowledge of the effects of intensive wood utilization, prescribed burning, or a combination of both treatments, on the microbial ecology of forest soils. Identifies additional research that must be done to fill voids in knowledge.
Author(s): Alan E. Harvey, Martin F. Jurgensen, Michael J. Larsen
Year Published:

Conventional statistical techniques are used to answer the question, "What is the necessary station density for a fire danger network?" The Burning Index of the National Fire-Danger Rating System is used as an indicator of fire danger.…
Author(s): Rudy M. King, R. William Furman
Year Published:

Description not entered
Author(s): Floyd A. Gordon
Year Published:

Presents frequencies, intensities, and influences of fire on stand structure and composition on the Bitterroot National Forest in west-central Montana. Three study areas were established, each having a wide range of elevations and forest types.…
Author(s): Stephen F. Arno
Year Published: