Life Sciences Commons^™

Influence Of Aspen, Young Lodgepole Pine, And Open Grassland Types Upon Factors Affecting Water Yield, E.G. Dunford, C.H. Niederhof

Aspen Bibliography

Burned and cutover lands in the Rocky Mountains present a distinct problem in watershed management. Many of these areas support a cover of grass or aspen rather than their original stand of lodgepole pine or spruce. Generally the new cover provides adequate protection from erosion, but there has been question regarding its other watershed qualities. In order to evaluate some of these qualities this preliminary study was undertaken in Colorado. The results indicate that, from the standpoint of water available for streamflow, aspen and grass are probably superior to a dense coniferous forest.

How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse

Aspen Bibliography

Additional low cost forage is urgently needed by Utah's range livestock industry. Seeding of depleted tracts in accordance with recently developed methods and principles will help supply this forage and is entirely feasible. Where the value of the increased forage will repay the cost of planting, careful reseeding of selected sites is fully justified.

The important part that reseeding can play in restoring ranges to their former capacity has been demonstrated. Although satisfactory results can be obtained on many sites during average or better years, much more study is needed to insure consistent success in abnormal years and to extend …

Suitability Of Birch, Aspen And Sugarberry For Rayon Pulp: Results Of Certain Sulfite Pulping And Bleaching Experiments, H. Nihlen, J.N. Mcgovern

Aspen Bibliography

No abstract provided.

Report On Sanitation And Fertilization Tests In Aspen Stands On Bright Angel Point, Grand Canyon National Park, Stuart R. Andrews

Aspen Bibliography

No abstract provided.

A Study Of The Ring-Necked Pheasant (Phasianus Colchicus Torquatus Gmelin) In Northern Utah, William T. Mckean

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Purpose of Study. The ring-necked pheasant (Phasianus colchicus torquatus Gmelin) is well enough known to need no introduction. It is at present undoubtedly the most abundant and most important gallinaceous game bird in northern Utah. Its abundance and its occurrence in agricultural areas has stimulated much general interest. Yet, aside from two food habits studies, both conducted in Utah County, no intensive research has been made into its ecological relationships or its general life history in Utah.

In order to formulate sound management plans for the pheasant in Utah, the Utah Cooperative Wildlife Research Unit has felt the need …

The Effect Of Fomes Ignarius On Populus Tremuloides In The Gallatin National Forest Of Montana, Marvin F. Kelly

Aspen Bibliography

No abstract provided.

Restoring Conifers To Aspen Lands In The Lake States, Hardy Lomax Shirley

Aspen Bibliography

With the advent of commercial logging and land clearing in the Lake States, some 70 years ago, aspen and brush began a rapid

Studies In Forest Pathology. Iii. Hypoxylon Canker Of Poplar, J.E. Bier

Aspen Bibliography

It is generally accepted that the economic importance of poplar is increasing, and a more detailed knowledge of the diseases affecting the various species is urgently needed.

This investigation deals with a canker disease found on aspen poplar (Populus tremuloides Michx. and P. grandidentata Michx.) resulting from the attack of the fungus Hypoxylon pruinatum (Klotzsch) Cooke. The heavy mortality due to Hypoxylon canker in widely separated regions clearly indicates this to be a most destructive disease of young aspen. Lorenz and Christensen (15) after making a survey of the disease in the Lake States mention that "Hypoxylon pruinatum …

The Ecology Of Agropyron Inerme On Protected And Heavily Grazed Range Land In Cache Valley, Utah, Wallace R. Hanson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

During the past decade much attention has been attracted to the great range lands of the West. The inherently low productivity of these arid lands coupled with abnormal drought and constantly heavy use by livestock because of lack of grazing control, have caused these lands to become greatly depleted over most of the West. That the vegetation on most range land in the intermountain states is depleted appreciably is evident to the careful observer. Undoubtedly the vegetation of much of the range has decreased in quantity, but more serious in many cases is the decrease in quality. Valuable forage species …

Weather And Plant-Development Data As Determinants Of Grazing Periods On Mountain Range, David F. Costello, Raymond Price

Aspen Bibliography

Fundamental in economical range-resource management is the determination of proper grazing periods. It is of prime importance to be able to establish a date in the spring when the range has produced sufficient feed to keep livestock in thrifty condition, when it is reasonably safe from excessive trampling and packing of the soil, and when the more important key forage plants have attained sufficient development to withstand grazing use. Such opening dates, as well as the time to defer and rotate grazing and to remove livestock from the range, are dependent in part on the prevailing weather conditions and on …

Forest Fire Damage Studies In The Northeast--I. Bark-Beetles And Fire Damaged Hardwoods, Paul W. Stickel

The Bark Beetles, Fuels, and Fire Bibliography

In reporting the damage to trees scorched lightly at the base by fire the average fire warden and even the technically trained forester is given to stating that little harm has been done providing the tree crowns remain green. Such a statement is far from being correct, failing as it does to take into account the aftermath of insect and fungus damage which invariably follows even the lightest of surface fires. In the case reported herein, over 50 per cent of the fire-scorched hardwoods showed signs of the presence of ambrosia-beetles, whose work, even if the trees continue to live, …

Poplars, Principal Tree Willows And Walnuts Of The Rocky Mountain Region, George B. Sudworth

Aspen Bibliography

No abstract provided.

Biotic Communities Of The Aspen Parkland Of Central Canada, Ralph D. Bird

Aspen Bibliography

No abstract provided.

Aspen : Availability, Properties, And Utilization, R.P.A. Johnson, Joseph Kittredge, Henry Schmitz

Aspen Bibliography

No abstract provided.

Quaking Aspen: A Study In Applied Forest Pathology, E.P. Meinecke

Aspen Bibliography

In the management of quaking aspen (Populus tremuloides Michaux.), as well as of any other species of forest tree, two factors are of decisive influence, namely, the possibility of securing the maximum volume production in sustained yield on a given area and on the other hand that of reducing to a minimum the loss from decay and other injurious factors.

Forest Possibilities Of Aspen Lands In The Lake States, Joseph Kittredge, Jr, Suren Rubenian Gevorkiantz

Aspen Bibliography

No abstract provided.

Heartrot Of Aspen : With Special Reference To Forest Management In Minnesota, Henry Schmitz, Lyle W.R. Jackson

Aspen Bibliography

No abstract provided.

Grazing Periods And Forage Production On The National Forests, Arthur W. Sampson, Harry E. Malmsten

Aspen Bibliography

Stockmen in the West have always had confidence in the adequacy of the native forage crop to provide pasturage for their livestock. Indeed, under normal climatic conditions this enormous natural resource has not failed the grazier, except where it has been called upon to meet unreasonable demands. The productivity of the range has declined sharply, however, wherever the requirements of plant growth have been disregarded for many years in succession. Where there has been too early or too frequent and to heavy grazing, undue trampling, or some other unsatisfactory feature of range use, the results have been uniformly bad. Many …

Aspen In The Central Rocky Mountain Region, Frederick S. Baker

Aspen Bibliography

The detailed studies reported in this bulletin were carried out chiefly on the Ephraim Canyon watershed of the Manti National Forest in central Utah.

Observations On Cytospora Chrysosperma In The Northeast, E.E. Hubert

Aspen Bibliography

The weather conditions during the unusually dry summers of 1917, 1918, and 1919 were influential factors in the widespread and abundant appearance of Cytospora chrysosperma (Pers.) Fr. upon certain forest, shade and ornamental trees in the Northwest.

Notes On Some Diseases Of Aspen, Carl Hartley, Glenn G. Hahn

Aspen Bibliography

No abstract provided.

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.

Climate And Plant Growth In Certain Vegetative Associations, Arthur W. Sampson

Aspen Bibliography

The relation of climate to the growth and development of vegetation is of profound importance in both practical and experimental agriculture. It is extremely useful to know the cause of successful growth and establishment, or of partial success or failure, of various species in different plant associations and under widely contrasted climatic conditions. The climatic requirements of various plant types are largely responsible for the results obtained in the case of experimental seedings and plantings of most species. Once the adverse climatic factors are definitely known, failures with plants may be largely avoided by the judicious selection of sites or …

The Story Of Aspen, Enos Mills

Aspen Bibliography

No abstract provided.

Aspen As A Permanent Forest Type, James M. Fetherolf

Aspen Bibliography

In an article on the "Stability of Aspen as a Type," published in the January, 1916, issue of the Proceedings of the Society, the author seems to infer that all aspen is temporary as a type, but refers to the prevalence of a different view in District 4 from that held by himself. In presenting this other view, I intend to bring out the more permanent features of aspen as a type. The importance of a clear understanding regarding this from the management and forestation standpoints is admittedly great. Any information that may be supplied or stimulus added to research …

The Stability Of Aspen As A Type, Arthur W. Sampson

Aspen Bibliography

No abstract provided.

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.

Practical Information On The Scolytid Beetles On North American Forests I. Barkbeetles Of The Genus Dendroctonus, Andrew Delmar Hopkins

The Bark Beetles, Fuels, and Fire Bibliography

During the writer's investigations of extensive insect depredations in the forests of West Virginia, from 1890 to 1902, he was forcibly impressed with the importance of the forest-insect problem in connection with any future efforts toward the successful management of the forests of this country, and was thus led to give special attention to the subject. It was soon realized that among the principal groups of insect enemies of forest trees the scolytid bark and wood boring beetles must occupy first rank, both in economic importance and systematic interest. Subsequent investigations in West Virginia, in connection with the work of …