Treesearch

Presents procedures for deriving yield tables for managed stands of spruce-fir from data obtained on temporary plots, and the computer programs developed by Myers (1971).

Involving the public in resource decision making is a new way of life for federal agencies. Public demand for access to the decision-making process has been reinforced by statutes and administrative directives that call for public input as agencies make plans to use the resources they steward. Natural resource management now recognizes public input as a legitimate component of decision making, embraced in such broad policy guidelines as the President's Water Resources Council's (1962) statement which says: "All viewpoints--national, regional, state, and local-shall be fully considered and...

Yearling heifers grazing Sherman big bluegrass ranges in Colorado during the cold winter period gained weight during late fall with or without a protein supplement, but they gained less than animals that grazed native range and received 1/2-lb protein/day. During winter and early spring, animals lost weight in most pastures. Exposure as well as kind and quantity of forage and feed available evidently influenced livestock weights. Grazing was not detrimental to Sherman big bluegrass during any period from late fall to early spring, and stands improved during the study. For most effective...

Equations for predicting moisture in large fuels were developed from data gathered at Priest River Experimental Forest and Boise Basin Experimental Forest. The most important variables were beginning moisture content of the fuel, duration of precipitation, amount of precipitation, and the sum of the mean temperature of an observation period. Sensitivity and precision of the equations are weak. Predictions could be used as a guide. Moisture content of logs varied according to type of exposure.

In the cedar-hemlock-grand fir ecosystem clearcutting of units of varying size (2.6 to 44 ha) and subsequent disposal of slash by prescribed burning resulted in on-site stream water quality changes. But off-site changes were of less intensity. Two of three clearcut units responded in this manner; a third unit gave different results. The physical and chemical components discussed represent the mean concentration per unit volume of discharge (or precipitation input) over a timespan of 21 months following land treatment.

In May 1974, a review draft of the Forest Habitat Types of Montana (Pfister et al. 1974) was released for use by Forest Service personnel and others requiring a method of ecosystem classification as a means to stratify forest environments in Montana. With the use of this review draft in mind, an objective was outlined to develop a vegetation map of the Tenderfoot Creek Experimental Forest (TCEF), southeast of Great Falls.

The Tenderfoot Creek Experimental Forest in the west-central part of the Little Belt Mountains occupies a transition zone in the west-central part of the Mountains-a transition from rolling mountain parks with rounded peaks that rise about 500 feet above the upland of the range to deeply incised canyons that drain the west end of the Mountains. The Experimental Forest is bisected by Tenderfoot Creek, which is incised as deeply as 2400 feet into the upland. The steep inner canyon of Tenderfoot Creek opens upward onto narrow parks, which are rimmed on the north and south by, rounded peaks...

Climate, geology, soils, vegetation, and water yields are briefly described, followed by a review and discussion of watershed management research and problems unique to the Black Hills. Research needs with respect to water quality, data collection, and model development are highlighted.

Chemical analyses and apparent in vitro dry matter digestibilities were obtained for mule deer (Odocoileus hemionus) forages appearing in monthly diets. Relative values among individual forage species were calculated based upon nutrient contents and percentage composition in the diet. These data provide land managers with the means to more precisely assess some impacts of vegetation management practices upon mule deer habitat, and to aid in designing habitat improvements.

The east flank of the Continental Divide consists largely of open timber stands and grasslands. Soils erode easily after abuse. Precipitation ranges from 15 to 20 inches, about two-thirds from high-intensity storms from April to September. Guidelines are provided for maintaining satisfactorv watershed conditions. The 3- to 5-inch water yields are comparatively small in contrast to yields of 12 to 25 inches from the high-altitude subalpine forests, but are important to development along the Front Range. Watershed management practices can be expected to provide practical alternatives for...