Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 91 - 120 of 132
Full-Text Articles in Forest Sciences
Rotations In Aspen: Ecology And Management In The Western United States, J.R. Jones, W.D. Shepperd
Rotations In Aspen: Ecology And Management In The Western United States, J.R. Jones, W.D. Shepperd
Aspen Bibliography
The rotation, in forestry, is the planned number of years between formation of a crop or stand and its final harvest at a specified stage of maturity (Ford-Robertson 1971).
Management Overview, J.R. Jones, R.P. Winokur, W.D. Shepperd
Management Overview, J.R. Jones, R.P. Winokur, W.D. Shepperd
Aspen Bibliography
No abstract provided.
Insects And Other Invertebrates In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle, D.M. Bowers
Insects And Other Invertebrates In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle, D.M. Bowers
Aspen Bibliography
No abstract provided.
Wood Resource In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle, R.P. Winokur
Wood Resource In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle, R.P. Winokur
Aspen Bibliography
Aspen has not been cut extensively in the West; in fact, it has been grossly underutilized. For example, as recently as 1975, the aspen harvest from National Forests in four Forest Service regions in the Rocky Mountain area was 7.64 million board feet.1 Additional minor volumes were cut on special-use permits for products such as fuel and corral poles. The total amount cut represented only 0.1% of the net volume available in these aspen forests.
Growth In Aspen: Ecology And Management In The Western United States, John R. Jones, George A. Schier
Growth In Aspen: Ecology And Management In The Western United States, John R. Jones, George A. Schier
Aspen Bibliography
No abstract provided.
Morphology In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle
Morphology In Aspen: Ecology And Management In The Western United States, J.R. Jones, N.V. Debyle
Aspen Bibliography
No abstract provided.
Survey Of Aspen Stands Treated With Herbicides In The Western United States, R.O. Harniss, D.L. Bartos
Survey Of Aspen Stands Treated With Herbicides In The Western United States, R.O. Harniss, D.L. Bartos
Aspen Bibliography
No abstract provided.
The Role Of Fire In Aspen Ecology, Norbert V. Debyle
The Role Of Fire In Aspen Ecology, Norbert V. Debyle
Aspen Bibliography
The tree with the widest range in North America, quaking aspen (Populus tremuloides), occurs on more than 7 million acres (2.86 million ha) in the nine interior Western States (Colorado, Utah, New Mexico, Wyoming, Arizona, Idaho, Montana, South Dakota, and Nevada). About 65 percent of the land is in public ownership; this includes many acres of wilderness at mid to high elevations.
Water And Watershed In Aspen: Ecology And Management In The Western United States, Norbert V. Debyle
Water And Watershed In Aspen: Ecology And Management In The Western United States, Norbert V. Debyle
Aspen Bibliography
No abstract provided.
Predicting Soil Moisture Depletion Beneath Trembling Aspen, D. Mital, E. Sucoff
Predicting Soil Moisture Depletion Beneath Trembling Aspen, D. Mital, E. Sucoff
Aspen Bibliography
No abstract provided.
Effect Of Small Aspen Clearcuts On Water Yield And Water Quality, Robert S. Johnston
Effect Of Small Aspen Clearcuts On Water Yield And Water Quality, Robert S. Johnston
Aspen Bibliography
No abstract provided.
Aspen Regeneration After Commercial Clearcutting In Southwestern Colorado, G.L. Crouch
Aspen Regeneration After Commercial Clearcutting In Southwestern Colorado, G.L. Crouch
Aspen Bibliography
No abstract provided.
Natural Variation In Merchantable Stem Biomass And Volume Among Clones Of Populus Tremuloides Michx, G.A. Lehn, K.O. Higginbotham
Natural Variation In Merchantable Stem Biomass And Volume Among Clones Of Populus Tremuloides Michx, G.A. Lehn, K.O. Higginbotham
Aspen Bibliography
No abstract provided.
An Approach To Functionalizing Key Environmental Factors Forage Production In Rocky Mountain Aspen Populus-Tremuloides Stands, J.P. Roise, D.R. Betters, B.M. Kent
An Approach To Functionalizing Key Environmental Factors Forage Production In Rocky Mountain Aspen Populus-Tremuloides Stands, J.P. Roise, D.R. Betters, B.M. Kent
Aspen Bibliography
No abstract provided.
Clone Expansion And Competition Between Quaking And Bigtooth Aspen Suckers After Clearcutting, Donald A. Perala
Clone Expansion And Competition Between Quaking And Bigtooth Aspen Suckers After Clearcutting, Donald A. Perala
Aspen Bibliography
The ability of quaking and bigtooth aspens (Populus tremuloids Michx., P. grandidentata Michx.) to vegetatively regenerate dense stands of root sprouts (suckers) is well documented (Brinkman and Roe 1975). Tens of thousands of suckers per hectare are commonly produced when stands are killed by fire or removed by clearcutting.
Estimating Plant Biomass For Undergrowth Species Of Northeastern Minnesota Forest Communities, L.F. Ohmann, D.F. Grigal, L.L. Rogers
Estimating Plant Biomass For Undergrowth Species Of Northeastern Minnesota Forest Communities, L.F. Ohmann, D.F. Grigal, L.L. Rogers
Aspen Bibliography
Knowledge of the plant biomass comprising a forest community is important to many aspects of multiple-use management. Direct measurement of biomass, however, is expensive and time-consuming to under-take each time biomass information would be useful. Fortunately, other measurements that can be made in the field less expensively or more easily can be used for estimating biomass.
Cryptosphaeria Canker And Libertella Decay Of Aspen, Thomas E. Hinds
Cryptosphaeria Canker And Libertella Decay Of Aspen, Thomas E. Hinds
Aspen Bibliography
A recently discovered, widely distributed canker disease of aspen and other poplars throughout the Rocky Mountain region is described. Inoculations with ascospore and conidial isolates of Cryptosphaeria populina show the fungus is capable of causing branch, sprout, and sapling mortality, trunk cankers, and the discoloration and decay of aspen stems previously associated with its imperfect stage, Libertella sp. The greatest average canker elongation 50 mo after September inoculations was 33.5 cm with sapwood decay and discoloration extending to 401 cm. The fungus caused an average weight loss of 13.5% in bark, 27.0% in sapwood, and 19.1% in heartwood blocks. Incidence …
Improving Aspen Poplar Populus-Tremuloides And Prickly Rose Rosa-Acicularis Covered Rangeland With Herbicides And Fertilizer, G. Bowes
Aspen Bibliography
No abstract provided.
Aspen Forest (20-Year), Connie J. Pearson, John B. Probst
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.
Aspen Clearcut (8-Year), Donald Rakstad, John R. Probst
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.
Forest Insect And Disease Management : Aspen Mortality At The Maroon Lake Campground, David W. Johnson, Thomas E. Hinds
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).
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
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.
Yields From 18-Year-Old Aspen Via Total Tree Harvesting, M. K. Benson, D. W. Einspahr
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.
Aspen Minnesota's No. 1 Tree, George Rossman, Bob Rossman, Allen Rossman
Aspen Minnesota's No. 1 Tree, George Rossman, Bob Rossman, Allen Rossman
Aspen Bibliography
For thousands of years after the last glaciers disappeared from northern Minnesota, the forces of nature worked to develop a magnificent forest of predominantly white and red pine. Stands of big pines covered more than 5 million acres.
Ecological Aspects Of Air Pollution From An Iron Sintering Plant At Wawa, Ontario, A.G. Gordon, E. Gorham
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 …
Field Guide To Aid In Recognition Of Natural Triploid Aspen, Philip N. Joranson, Dean W. Einspahr, J P. Van Buijtenen
Field Guide To Aid In Recognition Of Natural Triploid Aspen, Philip N. Joranson, Dean W. Einspahr, J P. Van Buijtenen
Aspen Bibliography
Swedish experience with the genetic improvement of the European aspen (Populus tremula L.), a species which is closely kin to our North American quaking aspen (P. tremuloides Michx.), suggests that the rate of volume increment and the length of fiber tracheids might both be increased in North American aspen by finding or producing trees which possess a triple set, rather than the usual double set, of "chromosomes". Chromosomes (Figure 1) are found within and inner region--the nucleus--of each of the millions of cells formed during the growth of a tree.
Enemies Of Aspen, Clyde M. Christensen, Ralph L. Anderson, A. C. Hodson, Paul O. Rudolf
Enemies Of Aspen, Clyde M. Christensen, Ralph L. Anderson, A. C. Hodson, Paul O. Rudolf
Aspen Bibliography
So long as aspen was considered primarily a weed species, there was little concern over the enemies which might injure or destroy it. Sometimes these enemies were actually considered "blessings in disguise. Now, however, that aspen not only is the most abundant "but also one of the most widely utilized tree species in the Lake States, there is increasing interest in anything that may affect its future supply. For that reason this brief summary of information on the enemies of aspen has been assembled.
Dimension Stock And Other Uses Of Aspen, Alexis J. Panshin
Dimension Stock And Other Uses Of Aspen, Alexis J. Panshin
Aspen Bibliography
Utilization of aspen for pulpwood, excelsior bolts, veneer logs and lumber has increased steadily during the past 10 years. This was particularly true during the war years when, because of the scarcity of other timber, aspen entered many new phases of utilization. In the lumber field alone the wider acceptance of aspen has been reflected in an increase in the annual production from 67 million board feet in 1941 to 152 million board feet in 1946. It is estimated, however, that aspen stands in the Lake States can provide an annual cut of at least 300 million board feet of …
Marketing Of Aspen, Zigmond A. Zasada
Marketing Of Aspen, Zigmond A. Zasada
Aspen Bibliography
The Lake States timber industry did a creditable job of producing and using considerable volumes of aspen during the war years. At that time it was shown that aspen could fill a variety of uses satisfactorily. However, improved marketing techniques are needed if present aspen stands are to be fully and profitably utilized. The aim of this paper is to call the attention of owners and producers of aspen to some of the points to be considered to improve marketing.
Aspen For Excelsior, Hereford Garland
Aspen For Excelsior, Hereford Garland
Aspen Bibliography
The use of aspen for the manufacture of excelsior is well established in the Lake States. The properties of the wood make it suitable for this general use, and there are adequate supplies available for increased productive capacity. The process of manufacturing excelsior is relatively uncomplicated, and the production equipment is simple and relatively low in cost. That the industry is not more extensive is obviously due to limitations in markets for excelsior. Expansion of the industry depends primarily upon the development of new uses and new products having excelsior as a base.