Life Sciences Commons^™

Management For Deer, John D. Byelich, Jack L. Cook, Ralph I. Blouch

Aspen Bibliography

Deer in the Lake States are declining. Early stages of second growth forest following the logging era favored deer. Aging and successional changes toward more tolerant types are causing range deterioration. Aspen is the major deer-producing forest type. Commercial harvest of aspen improved deer range, but not enough is taking place to reverse the downward trend of deer or to save the type from conversion. Additional efforts to cut of otherwise treat aspen stands specifically for deer have been of token size. Michigan has earmarked a deer license increase for range improvement and is now embarked on a large scale …

Stemflow In A Multi-Storied Aspen Community, J.R. Clements

Aspen Bibliography

This report presents results of a stemflow study in a 5-year-old, dense, sucker stand of largetooth aspen [Populus grandidentata Michx.]. The purposes of this study were to determine the relation of stemflow volume per tree to gross rain per storm, to determine the proportion of gross rain reaching the ground as stemflow, and to derive an equation to predict rain equivalent of stemflow from gross rain for use in other studies of water relations of this sucker stand.

Altitudinal Variation Of Chlorophyll Concentration And Reflectance Of The Bark Of Populus Tremuloides, W.W. Covington

Aspen Bibliography

No abstract provided.

Breeding And Establishment - And Promising Hybrids, Miles K. Benson

Aspen Bibliography

No abstract provided.

Forage And Woody Sprout Establishment On Cleared, Unbroken Land In Central Alberta, A.R. Bailey

Aspen Bibliography

No abstract provided.

The Relationship Of The Abundance Of Saperda Inornata And Oberea Schaumii (Coleoptera: Cerambycidae) In Large Trembling Aspen, Populus Tremuloides, To Site Quality, J.C. Nord, F.B. Knight

Aspen Bibliography

No abstract provided.

Genetic Control Of Susceptibility To Hypoxylon Mammatum In Native Aspens, F.A. Valentine, P.D. Manion

Aspen Bibliography

Hypoxylon canker, caused by Hypoxylon mammatum (Wahl.) Mill. (sy., H. pruinatum (Slot.) Cke.) is one of the more serious diseases of trembling aspen (Populus tremuloides Michx.) but is rare on bigtooth aspen (P. grandidentata Michx.) (Graham et al., 1963).

Guide To The Identification Of Poplar Cultivars On The Prairies, K. J. Roller, D. H. Thibault, V. Hildahl

Aspen Bibliography

This paper provides those who work with poplars in the prairies region of Canada with an easy-to-use leaf and twig key and detailed morphological descriptions of the more commonly planted cultivars. Recommendations for their use, notes on growth, natural pruning, susceptibility to insects and diseases, and tolerance to climatic extremes are also provided.

Aspen: Symposium Proceedings, Usda Forest Service

Aspen Bibliography

These are the proceedings of the Aspen: Symposium.

Economic Operability - Factors Affecting Harvest And Transport Costs, Dennis P. Bradley, Frank E. Biltonen

Aspen Bibliography

No abstract provided.

Size And Suckering Of Trembling Aspen Clones In Manitoba, Gustav A. Steneker

Aspen Bibliography

No abstract provided.

Effect Of An Aspen Clearcutting On Water Yield And Quality In Northern Minnesota, Elon S. Verry

Aspen Bibliography

The impact of different forest types on streamflow or groundwater recharge must be considered in evaluating multiple-use alternatives. The impact of species conversion on streamflow has been directly measured at the Coweeta Experimental Watersheds in North Carolina. However, the use of net precipitation¹ data, with appropriate cautions, provides a practical basis for estimating water yield differences between forest types where long-term streamflow comparisons are not available.

The Effects Of Deer And Domestic Livestock On Aspen Regeneration In Utah, Arthur D. Smith, Paul A. Lucas, Calvin O. Baker, George W. Scotter

Aspen Bibliography

No abstract provided.

Growth And Yield Of Managed Stands, Bryce E. Schlaegel

Aspen Bibliography

No abstract provided.

Estimating Woody Dry Matter Loss Resulting From Defoliation, D.F.W. Pollard

Aspen Bibliography

No abstract provided.

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

Aspen Bibliography

No abstract provided.

Silvics And Ecology In Canada, J.S. Maini

Aspen Bibliography

No abstract provided.

Mortality Of Aspen On The Gros Ventre Elk Winter Range, R.G. Krebill

Aspen Bibliography

No abstract provided.

Projecting The Aspen Resource In The Lake States [Usa], W.A. Leuschner

Aspen Bibliography

No abstract provided.

Effects Of Thinning On Growth And Yield, John W. Hubbard

Aspen Bibliography

No abstract provided.

Vegetation Survey Of Floodplain Forests Along The Wabash River, Philip E. Phillippe

Masters Theses

No abstract provided.

Woody Vegetation Survey Of Rocky Branch Nature Preserve, Clark County, Illinois, James T. Hughes

Masters Theses

No abstract provided.

Variance Analysis Of Basis Weight Variation On The Pilot Machine, Timothy A. Armstrong

Paper Engineering Senior Theses

The purpose of this study was to determine the significance of the variations of the pilot machine of the Department of Paper Science and Engineering at Western Michigan University by variance analysis conducted on basis weight profiles obtained from the Industrial Nucleonics scanning basis weight gauge. The profiles obtained from the basis weight gauge were subjected to a computer program which computed the cross-direction, machine-direction, and random component variations and determined F-ratios. The F-ratio shows the significance of the component variation. Cross-direction variation was found to decrease with speed. Machine-direction variation showed no significant trend and the random variation decreased …

Addition Of Ba (Oh)2 To A Closed White Water System As A Means Of Controlling Acidity And Sulfate Ion Build Up, Charles R. Tobey

Paper Engineering Senior Theses

In an effort to reduce the intake of fresh water into a mill a greater quantity of white water must be recycled to meet the demands of production. Unless some action is taken, continued reuse of the water produces a badly deteriorated paper-making system.

It is believed that the buildup of free acid and sulfate ions from the addition of paper-maker's alum causes the degradation. A bench trial using a Noble and Wood hand-sheet maker capable of recirculating white water was used to duplicate such a deteriorated system and then to restore it with the introduction of Ba(OH)₂. …

The Comparison Of A Primary And Secondary Amine As Collectors In Froth Flotation Techniques For Primary Clarification Of Paper Mill Effluent, Gerard M. Marshall

Paper Engineering Senior Theses

The following investigation deals with primary clarification by use of froth flotation techniques. A primary amine was compared to a secondary amine in their collection properties at three pH values. pH variation was found to have an effect on the water content in the foam and the amount of solids collected. A higher pH showed less water content in the foam resulting in higher solids content.

The study indicated that sedimentation had better percent solids coupled with it being a less expansive operation enables it to continue while more efficient methods in flotation are sought out.

Texas Forestry Paper No. 10, Seymour I. Somberg, Richard E. Haas

Texas Forestry Papers, No. 1-29, 1970-1976

"Heavy thinnings can increase income from east texas loblolly pine stands"

Texas Forestry Paper No. 8, J. David Lenhart

Texas Forestry Papers, No. 1-29, 1970-1976

"Site index curves for old field loblolly pine plantations in the interior west gulf coastal plain"

Texas Forestry Paper No. 9, J. J. Stransky

Texas Forestry Papers, No. 1-29, 1970-1976

"Managing for quail and timber in longleaf pine forests"

"The Application Of Zeta Potential For The Effective Retention Of Titanium Dioxide In Chemically Modified Systems", John W. Clapp

Paper Engineering Senior Theses

This study was done to determine how to obtain maximum effective filler retention in a fiber and titanium dioxide system. Retention of fillers in a fibrous system is greatly influenced through the use of high molecular weight polymers. It was found that by using cationic and anionic polymers in the same system, a synergistic effect results which yields a higher effective retention than if either polymers were used along. Furthermore, by precisely controlling the amounts of each polymer so as to obtain the isoelectric point in zeta potential; the peak effective retention is reached.

The Effect Of Filler Distribution On Sheet Optical Properties, David T. Rasley

Paper Engineering Senior Theses

It is becoming increasingly important to the paper industry to be able to produce paper with high brightness and opacity. Good formation is also highly important. For these reasons, the industry is investigating the way the fines, fiber, and filler are distributed using the different types of paper machines.

Through this thesis work, it will be investigated how the filler distribution affects the optical properties of a sheet and what filler distribution will give maximum scattering power, brightness and opacity. From this it may be possible to suggest what paper machine variables will give filler distributions with improved optical properties.