Life Sciences Commons^™

Wildlife In Aspen: Ecology And Management In The Western United States, Norbert V. Debyle

Aspen Bibliography

Aspen forests provide important habitat for many species of wildlife (Gullion 1977b), especially in the West (see the appendix to this chapter). In the coniferous forests of the interior West, aspen groves may be the only source of abundant forage; in the grasslands they may be the sole source of cover. A primary value of the aspen ecosystem in the West during the past century has been production of forage for both wildlife and domestic livestock (see the FORAGE chapter).

Forage Quality Comparison Of Burned And Nonburned Aspen Communities, Deborah L. Blank

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The objectives of this study were to assess the effects of prescribed burning on herbaceous and browse forage quality in the aspen forest type for elk and domestic sheep.

Plant samples of selected forage species were taken from burned and nonburned plots within three different prescribed burns in southeastern Idaho. These samples were analyzed for in vitro dry matter digestibility, crude protein, calcium and phosphorus. Data were analyzed using the analysis of variance.

There was little improvement in forage quality as a result of prescribed burning, with some reduction in quality in 1983 exhibited by pinegrass (Calamagrostis rubescens). …

Aspen Management Guidelines For The Grand Mesa, Uncompahgre And Gunnison National Forest, Aspen Management Task Force

Aspen Bibliography

A task force was formed in late April 1983 for the purpose of developing guidelines for Aspen Management on the Grand Mesa, Uncompahgre and Gunnison National Forests.

Stand Characteristics Of Rocky Mountain Aspen, Wayne D. Shepperd

Aspen Bibliography

No abstract provided.

Aspen Clearcut (8-Year), Donald Rakstad, John R. Probst

Aspen Bibliography

This report includes a breeding-bird census, a list of dominant plant species, and brief physiographic data for a 8-year old aspen clearcut on the Chippewa National Forest, Michigan.

Elk-Aspen Relationships On A Prescribed Burn, Joseph V. Basile

Aspen Bibliography

No abstract provided.

Aspen Forest (20-Year), Connie J. Pearson, John B. Probst

Aspen Bibliography

This report includes a breeding-bird census, a list of dominant plant species, and brief physiographic data for a 20-year old aspen forest in Ontonagon, Michigan.

Density And Diversity Responses Of Summer Bird Populations To The Structure Of Aspen And Spruce-Fir Communities On The Wasatch Plateau, Utah, Janet Lee Young

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sixteen stands representing a range of structural variation in aspen, mixed aspen-conifer, and spruce-fir communities of the Wasatch Plateau, Utah, were censused by the sample count method. The stands were classified as eleven community types based on the understory dominants or indicator species and the cover types. Fifty bird species were recorded during the two seasons; thirty-two occurred in aspen cover, forty-four in mixed aspen-conifer cover, and twenty-two in spruce-fir.

Comparisons of the composition and density of bird populations were made between uniform stands of a single life form and more structurally complex stands of either single or mixed life …

A Comparison Of Dewpoint And Psychrometric Mode In Leaf Water Potential Measurements, Gladys Durand-Campero

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Leaf water potential of two maize plants (Zea mays L.) two chlorophytum plants (Chlorophytwn capense, Kuntze), a schefflera (Brassaia actinophylla) and one aspen (Populus tremuloides Michx.), were measured under laboratory conditions with aluminum block in situ leaf hygrometers and with stainless steel single junction chamber hygrometer using excised entire leaves. Plants were subjected to a drying cycle. The hygrometers were controlled with a dewpoint microvoltmeter and all readouts were recorded on a chart recorder. A typical reading and control schedule included 20 second cooling before a first psychrometric reading allowing the output to …

Field Studies Of Pine, Spruce And Aspen Periodically Subjected To Sulfur Gas Emissions, A.H. Legge, D.R. Jaques, R.G. Amundson, R.B. Walker

Aspen Bibliography

No abstract provided.

Forest Insect And Disease Management : Aspen Mortality At The Maroon Lake Campground, David W. Johnson, Thomas E. Hinds

Aspen Bibliography

At the request of the White River National Forest, Dave Johnson, Plant Pathologist, FI&DM and Tom Hinds, Plant Pathologist, RMFRES, made an evaluation of aspen mortality in the Maroon Lake Campground, Aspen Ranger District during June 13 to 15, 1977. Previously, Hinds (1976) reported accelerated aspen loss in 17 campgrounds, including Maroon Lake, located throughout Colorado and New Mexico (Fig. 1).

Effects Of Clear-Cutting On Nutrient Losses In Aspen Forests On Three Soil Types In Michigan, Curtis J. Richardson, Jeffrey A. Lund

Aspen Bibliography

The effects of clear-cutting on NO^-₃, NH⁺₄, PO^3-₄, K⁺, Ca²⁺, Na⁺, Fe²⁺, and Mg²⁺ losses were evaluated in three 60-year-old aspen stands in northern lower Michigan.

Yields From 18-Year-Old Aspen Via Total Tree Harvesting, M. K. Benson, D. W. Einspahr

Aspen Bibliography

Described are the results of harvesting the above-ground parts of an 18-year-old aspen stand and the observations made on the initial suckering of the new stand. The yields for the stand of 17.7 cunits per acre were greater than predicted yields of comparable material for the site at age 35. Suckering on the area the first year after cutting averaged 37,000 aspen stands per acre and 2.6 feet in height.

Waterfowl Habitat Trends In The Aspen Parkland Of Manitoba, W.H. Kiel, A.S. Hawkins, N.G. Perret

Aspen Bibliography

No abstract provided.

World Developments In Increased Forest Resources For The Pulp And Paper Industry, J. L. Keays

Aspen Bibliography

The present report reviews major trends in utilization of world forest resources for conversion to fiber products: pulp, paper, paperboard, composition board and fibreboard. Trends are reviewed from 1930 to the present and cover anticipated extension of these trends to the year 2000.

The Effect Of Cattle, Sheep, And Other Factors On Aspen (Populus Tremuloides) Reproduction After Clear-Cut Logging In Southern Utah, Paul A. Lucas

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Aspen is the most widespread deciduous tree of the western United States and the aspen type is important for water, forage, and wood products. Aspen reproduction on cutover areas was thought to be hindered by browsing and other factors, therefore a study was conducted to determine the effects of livestock, pocket gophers, disease, and snowpack damage on aspen reproduction during the first three years after clear-cutting. An enclosure was constructed and divided into nine paddocks. Controlled grazing by cattle and sheep was applied to six different paddocks during three summer periods. Three paddocks were protected from grazing. Results show that …

Exclosures And Natural Areas On Rangelands In Utah, W. A. Laycock

Aspen Bibliography

This exclosure on the Beaver District of the Fishlake National Forest is typical of the many two-part exclosures found throughout Utah. In this exclosure, cattle were excluded, while deer were permitted behind the fence in the area on the right. Both cattle and deer were excluded in the area on the left. Note lack of aspen reproduction where deer were permitted and abundant reproduction where they were excluded.

Ecological Aspects Of Air Pollution From An Iron Sintering Plant At Wawa, Ontario, A.G. Gordon, E. Gorham

Aspen Bibliography

At Wawa, in northern Ontario, vegetation has been damaged severely by sulphur dioxide pollution from an iron-sintering plant. Damage is mainly restricted to a narrow strip northeast from the sinter plant, since southwest winds are strongly predominant. It is traceable from the air for at least 20 mile in this direction and is estimated as severe within 11 miles and very severe within 5 miles. Within about 10 miles NE, from the sinter plant ground flora variety declines markedly, from about 20-40 species per 40 square meter quadrat beyond this distance to 0-1 species within 2 miles of the pollution …

Effect Of Grazing Upon Aspen Reproduction, Arthur W. Sampson

Aspen Bibliography

It is desirable that on lands bearing a stand of aspen (Populus tremuloides)¹ a proper balance be maintained between timber production and grazing.

Effects Of Varying Certain Cooking Conditions In Producing Soda Pulp From Aspen, Henry E. Surface

Aspen Bibliography

No abstract provided.

The Aspens: Their Growth And Management, William Grant Weigle, Earl Hazeltine Frothingham

Aspen Bibliography

The aspens, or "popple," as they are often collectively termed, occupy a peculiar position in the forests of North America. Growing up rapidly and in great abundance over areas which have been deforested, usually by fire, they attain only a small size, produce a soft, weak wood, extremely valuable for a limited number of uses, and die at a relatively early age.