Life Sciences Commons^™

Existing And Potential Outdoor Recreation Resources In Bear Lake Valley, Utah And Idaho, Dennis H. Black

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Providing adequate outdoor recreational opportunities to the public is now a national problem. Of the many influences affecting the demand for recreation, increased income, population increase, sociological changes, and rapidly increasing technological developments are the more important. In the face of these factors, we must plan better to insure sufficient future needs. This will require evaluation and development of many recreation opportunities.

The Bear Lake are of northeastern Utah and southeastern Idaho is situated along U.S. 89 and within close driving distance of much of Utah's population. Up to the present there has been little orderly or planned development of …

Aspen-Elk Relationships On The Northern Yellowstone Winter Range, William J. Barmore Jr.

Aspen Bibliography

No abstract provided.

Forestry Bulletin No. 7: Films And Filmstrips On Forestry, N. T. Samson

Forestry Bulletins No. 1-25, 1957-1972

A bibliography of film and filmstrips covering forestry studies.

Cacodylic Acid As A Silvicide, Maurice W. Day

Aspen Bibliography

This report deals with the effectiveness of cacodylic acid (dimethylarsenic acid) as a silvicide for undesirable trees. Cacodylic acid has been used successfully as an herbicide for the destruction of grasses and weeds. Experimental work with this material was begun during the 1963 field season, and continued during 1964, to permit complete evaluation of the results. It appears that cacodylic acid has considerable potential as a silvicide.

Lucille Vinyard Journal 1965, Lucille Vinyard

Lucille Vinyard Journal Collection

No abstract provided.

Hypoxylon Canker Of Aspen: Seasonal Development Of Cankers And Ascospore Ejection In Winter, F.A. Wood, D.W. French

Aspen Bibliography

No abstract provided.

Preliminary Tables Of Some Chemical Elements In Seven Tree Species In Maine, H.E. Young, P.N. Carpenter, R.A. Altenberger

Aspen Bibliography

No abstract provided.

Growth And Change In Structure Of An Aspen Stand After A Harvest Cutting, E.C. Martin

Aspen Bibliography

No abstract provided.

Quaking Aspen (Populus Tremuloides, Michx.), R.O. Strothmann

Aspen Bibliography

Quaking aspen in the most widely distributed tree species in North America (66, 78);^2/ it has a transcontinental range which covers more than 110 degrees of longitude and 40 degrees of latitude. Other common names include quaking asp, aspen, golden aspen, mountain aspen, trembling aspen, Vancouver aspen, poplar, trembling poplar, and popple (44). The terms "quaking" and "trembling" come from the fact that the leaves tremble in the slightest breeze because the leaf petiole is flattened at right angles to the leaf blade. The term "golden" refers to the brilliant gold and yellow of the foliage in the autumn.

Growth And Yield Of Well-Stocked Aspen And Birch Stands In Alaska, Robert A. Gregory, Paul M. Haack

Aspen Bibliography

No abstract provided.

Aspen Snag Yields Record Bitterbrush Seed Cache, Edward R. Schneegas

Aspen Bibliography

No abstract provided.

Clear Cutting Alternate Strips And Scarifying In White Spruce And White Spruce-Trembling Aspen Stands To Induce Natural White Spruce Regeneration, Manitoba And Saskatchewan, V.S. Kolabinski

Aspen Bibliography

No abstract provided.

Distribution In Minnesota Of Acer Saccharum, Tilia Americana And Betula Lutea, Edward Flaccus

Journal of the Minnesota Academy of Science

The distribution in Minnesota of three tree species (Acer saccharum, Betula lutea and Tilia americana) of the northern hardwood type have been plotted, using data from the Third Forest Inventory of the Lake States' Forest Experiment Station, herbaria records and records of occurrence from personal and other's field work. Maps are presented that give more detailed distributions than have heretofore been available. All three species show concentration in a belt along the North Shore of Lake Superior. Acer saccharum and Tilia Americana show the expected close correspondence of distribution in this belt and in a broad extension westward, almost to …

Some Interpretations Of A Map On Minnesota Sawmilling, Lyda Belthuis

Journal of the Minnesota Academy of Science

Sawmilling in Minnesota started about the time of settlement and, until 1870, mainly consisted of small mills located in the southern half of the state. Mills along the Mississippi River were mainly in urban centers while the remainder were scattered and associated with the clearing of the land and the meeting of the needs of local communities. After 1870, mills become larger. Many were constructed in northern Minnesota. All used forests in the northern port of the state and reduced them so greatly that, by 1920, the mills closed and were replaced by portable sawmills.

Forestry Bulletin No. 6: Point-Sampling From Two Angles, Ellis V. Hunt Jr, Robert D. Baker, Lloyd A. Biskamp

Forestry Bulletins No. 1-25, 1957-1972

"Point-sampling is a valuable tool in the kit of the practicing forester. It is employed for permanent and temporary sampling and for growth studies. Since the concept of point-sampling is new in American forestry, different approaches have been employed to explain its application."

The Effect Of Variables On The Penetration Of Starch Applied At The Size Press, John Hartman

Paper Engineering Senior Theses

The literature from 1925 until the present was searched as it related to the above topic. It was organized into three areas. The first relates the reasons for surface sizing a sheet and how penetration affects them. The second topic states the beliefs as to which variables affect penetration and how they are believed to affect it. The last area concerns the work that has been done in this field. This work has been looking due to a lack of good procedure. Some work has been done on starch coating adhesives and this was searched for useable technique.

Preliminary Fresh And Dry Weight Tables For Seven Tree Species In Maine, Harold E. Young, Lars Strand, Russell Altenberger

Aspen Bibliography

Long range forecasts of the use of wood, independently prepared by the Forestry and Forest Products Division of the Food and Agriculture Organization in Rome and the Standard Research Institute in California, concluded that in the foreseeable future there will be only a slight increase in the consumption of lumber but a rapidly increasing use of products made from wood fiber such as paper and paperboard.

Since 1955 the use of weight as a basic unit of measurement for roundwood and chips has increased more rapidly than the consumption of products made from such material. In some portions of the …

Laminating Wood Components Of Varying Individual Thickness, Jere Murphy Cary

Graduate Student Research Papers

This paper deals with a new process in woodworking—one which overcomes some old woodworking problems in lamination. In the paper, the writer will justify and explain the process of lamination, the history of lamination and the justification of laminating wood components of varying individual thickness. The actual mechanical processes—the how to do it—is described as well as some possible uses of the process.

Use Of Microtome Sections To Determine The Effect Of Retention Aid On Filler Distribution, James Farrand

Paper Engineering Senior Theses

Two-sidedness of paper is an all too common problem in the paper industry. Most of the undesirable results are due to the uneven distribution of filler in the sheet. An accurate, reproduceable, method is needed to study this distribution gradient in order to find the effect of certain variables on this distribution. Although the following method has been used before, its reproducibility has not been demonstrated to any great extent, nor has much work been done as to the effect of variables on the distribution. In this study, the reproducibility of this method is demonstrated and the effect of retention …

Preliminary Investigation On Bamboo Pulping, Sushil Moona

Paper Engineering Senior Theses

A preliminary investigation on bamboo pulping by Semi-Keebra process reveals that a higher pulp yield than that obtained by most of the known methods of pulping bamboo can be attained by Semi-Keebra process.* The chemical requirement for pulping is lower than the conventional processes and the spent liquor also contains a higher per cent of solids. The pulp obtained by Semi-Keebra pulp would also require a considerable lesser time for obtaining the desired freeness value, resulting in lower power consumption for stock preparation, than that for the conventional sulphate bamboo pulp of bleachable grade. A comparison of the various hand-sheet …

A History Of Timber Resource Use In The Development Of Cache Valley, Utah, Douglas M. Bird

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

It has long been realized that the forests and forest products contributed very significantly toward the economic development of the Western United States. However, the extent of this contribution over a relatively small area has never been fully analyzed. Therein lies the primary justification for this paper. The author hopes that the readers of this paper will, through their reading, gain some appreciation of the major role the forest and its products played in the development of the western community.

Because of some important social differences between the area described in this paper and other western communities, the history herein …

The Effect Of Fiber Length And Degree Of Fibrillation On Water Removal By Wet Pressing, John C. Walkush

Paper Engineering Senior Theses

The amount of water ·in paper determines indirectly the strength of it by dictating what type of bonds are formed between fibers. The less water in paper the stronger it is. Wet pressing is considered in detail as one method of water removal to determine what factors affect the amount of water removal since this would indirectly affect the development of paper strength. Specifically, the effect of fiber length and the degree of fibrillation was studied. It was found that as fiber length decreases the amount of water that can be removed decreases and that as the degree of fibrillation …

Acrylic Resin Tubes For Studying Root Growth In Tree Seedlings, M. Victor Bilan

Faculty Publications

A new method was designed to study root growth of intact tree seedlings grown in acrylic resin tubes filled with soil.

Private Nonindustrial Ownership Of Forest Land: An Economic Theory Of Owner Motivation And Management Intensity, Robert O. Mcmahon

Yale School of the Environment Bulletin Series

No abstract provided.

Influence Of Fire On Aspen Suckering, K.W. Horton, E.J. Hopkins

Aspen Bibliography

No abstract provided.

A Simple Technique For Age Determination In Trembling Aspen, J.S. Maini, R.T. Coupland

Aspen Bibliography

No abstract provided.

A Test Of Harvest Cutting Methods In Alberta's Spruce-Aspen Forest, J.C. Lees

Aspen Bibliography

No abstract provided.

A Quick Method Of Determining Age Of Trembling Aspen, R.J. Lynn

Aspen Bibliography

No abstract provided.

A Study Of The Northern Upland Forest On The Islands Of The Whitefish Lake Chain, Minnesota, Roy K. Blowers

Journal of the Minnesota Academy of Science

During an investigation of the area of the Whitefish Lakes, it was noted that two definite types of forest communities existed, a conifer forest and a hardwood forest. It was also noted that each type appeared on different parent soil materials. The problem was actually divided into four parts as follows: How well did the vegetation and the parent material correlate? What was the plant succession in the area? How was the plant succession affected by the parent material? And, how was the resulting soil affected by the vegetation?

It was decided that a forest study of islands would give …

The Effect Of Thrust On The Development Of Strength With The Mead Refiner, G. Hayward

Paper Engineering Senior Theses

Several different thrust pressures were exerted on the plates of the Mead Laboratory Refiner and pulp samples were refined over a wide freeness range for each of the several pressures. The strength characteristics developed were measured and it was found that maximum burst and tensile strength was developed by a thrust pressure of 31.22 pounds. Maximum tearing strength was developed at a thrust pressure of 25.94 pounds.

The refining time required to reach a given freeness increased as as the thrust was reduced, but reached a maximum at 20.66 pounds and remained constant for lesser pressures.