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Articles 10621 - 10650 of 11528
Full-Text Articles in Life Sciences
Breeding Birds And Vegetation Of The Central Illinois Floodplain Forest, Daniel Edward Varland
Breeding Birds And Vegetation Of The Central Illinois Floodplain Forest, Daniel Edward Varland
Masters Theses
No abstract provided.
Report Of Progress To The National Science Foundation For Grant, James A. Macmahon
Report Of Progress To The National Science Foundation For Grant, James A. Macmahon
Aspen Bibliography
No abstract provided.
Frost Damage In Poplar On The Prairies, Harry Zalasky
Frost Damage In Poplar On The Prairies, Harry Zalasky
Aspen Bibliography
Frost cankers in poplar are freeze-killed areas of bark and wood around which woody calluses develop and form buris and frost ribs. Frost dieback is a freeze-killed segment of the stem at the base, tip, or mid-portion of a branch or leader. It may or may not enhance natural pruning or poplar branches depending on whether the basal parts are damaged or alive and able to form abscission layers. In addition to abscission, low temperature affects increment, growth patterns, and vigor of poplar. Tree become stunted from persistent leader dieback. Suckers, crooks, and sweeps also characterize many stands of poplar. …
Effects Of Clear-Cutting On Nutrient Losses In Aspen Forests On Three Soil Types In Michigan, Curtis J. Richardson, Jeffrey A. Lund
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, PO3-4, K+, Ca2+, Na+, Fe2+, and Mg2+ losses were evaluated in three 60-year-old aspen stands in northern lower Michigan.
Odum's Ecosystem Attributes: Testing An Hypothesis, James A. Macmahon
Odum's Ecosystem Attributes: Testing An Hypothesis, James A. Macmahon
Aspen Bibliography
No abstract provided.
Some Properties And Characteristics Of Aspen That Affect Utilization In The Rocky Mountains, E.M. Wengert
Some Properties And Characteristics Of Aspen That Affect Utilization In The Rocky Mountains, E.M. Wengert
Aspen Bibliography
No abstract provided.
Colorado Steers And Aspen Bark, J.A. Fullinwider
Colorado Steers And Aspen Bark, J.A. Fullinwider
Aspen Bibliography
No abstract provided.
Processing Low Quality Trees By The Sholo Approach, Vern P. Yerkes
Processing Low Quality Trees By The Sholo Approach, Vern P. Yerkes
Aspen Bibliography
No abstract provided.
Aspen Potential - A Land Manager's Viewpoint, Bruce B. Hronek
Aspen Potential - A Land Manager's Viewpoint, Bruce B. Hronek
Aspen Bibliography
From a land manager's viewpoint, the management of aspen has been lacking. However, the potentials of aspen as a viable and meaningful species that will contribute much to the forest environment and economics is both possible and practical.
Estimating Water Yield Differences Between Hardwood And Pine Forests: An Application Of Net Precipitation Data, Elon S. Verry
Estimating Water Yield Differences Between Hardwood And Pine Forests: An Application Of Net Precipitation Data, Elon S. Verry
Aspen Bibliography
No abstract provided.
Kiln Drying Characteristics Of Studs From Rocky Mountain Aspen And Wisconsin Aspen, James C. Ward
Kiln Drying Characteristics Of Studs From Rocky Mountain Aspen And Wisconsin Aspen, James C. Ward
Aspen Bibliography
Aspen studs, 7/4-inch thick, from Rocky Mountain and Wisconsin trees will dry to required moisture contents within similar periods of time under conventional and high temperature kiln schedules. Bacterial wetwood occurs in both Rocky Mountain and Wisconsin aspen and causes severe drying problems from wet pockets, collapse, honeycomb, and ring failure. Presorting green lumber is a suggested solution to the wetwood problem.
Sawflies Of The Holarctic Genus Platycampus Schioedte (Hymenoptera:Tenthredinidae), D.R. Smith
Sawflies Of The Holarctic Genus Platycampus Schioedte (Hymenoptera:Tenthredinidae), D.R. Smith
Aspen Bibliography
No abstract provided.
Upland Aspen/Birch And Black Spruce Stands And Their Litter And Soil Properties In Interior Alaska, J.L. Troth, F.J. Deneke, L.M. Brown
Upland Aspen/Birch And Black Spruce Stands And Their Litter And Soil Properties In Interior Alaska, J.L. Troth, F.J. Deneke, L.M. Brown
Aspen Bibliography
No abstract provided.
Water Quality Of A Range Watershed In Southwestern Alberta Prior To Aspen Clearing, T. Singh, Y.P. Kalra
Water Quality Of A Range Watershed In Southwestern Alberta Prior To Aspen Clearing, T. Singh, Y.P. Kalra
Aspen Bibliography
No abstract provided.
Understory Production Not Predictable From Aspen Basal Area Or Density, K.E. Severson, J.J. Kranz
Understory Production Not Predictable From Aspen Basal Area Or Density, K.E. Severson, J.J. Kranz
Aspen Bibliography
Analysis of effects of aspen basal area and density on production of understory vegetation revealed no useful predictive relationships using the model log Y = a + bX. However, as the proportion of ponderosa pine basal area increased in aspen-pine stands, understory production declined in a predictable manner. Root biomass, total biomass, and/or growth rate of aspen may be more closely related to understory production than measures of aspen overstory.
Utilization And Marketing As Tools For Aspen Management In The Rocky Mountains: Proceedings Of The Symposium, Sept. 8-9, 1976, Fort Collins, Colorado. Panel Iii. Market Opportunities And Limitations For Rocky Mountain Aspen, G.K. Runyon, M.S. Koepke, E.M. Wengert, R.J. Auchter, T.J. Loring, G. Blackwell
Utilization And Marketing As Tools For Aspen Management In The Rocky Mountains: Proceedings Of The Symposium, Sept. 8-9, 1976, Fort Collins, Colorado. Panel Iii. Market Opportunities And Limitations For Rocky Mountain Aspen, G.K. Runyon, M.S. Koepke, E.M. Wengert, R.J. Auchter, T.J. Loring, G. Blackwell
Aspen Bibliography
No abstract provided.
Effects Of Clear-Cutting On Nutrient Losses In Aspen Forests On Three Soil Types In Michigan, Curtis J. Richardson, Jeffrey A. Lund
Effects Of Clear-Cutting On Nutrient Losses In Aspen Forests On Three Soil Types In Michigan, Curtis J. Richardson, Jeffrey A. Lund
Aspen Bibliography
No abstract provided.
Rocky Mountain Aspen For Pulp: Some Market Opportunities And Limitations, Thomas J. Loring
Rocky Mountain Aspen For Pulp: Some Market Opportunities And Limitations, Thomas J. Loring
Aspen Bibliography
No abstract provided.
Aspen Market Opportunities: Lumber, Excelsior And Residue, Mark S. Koepke
Aspen Market Opportunities: Lumber, Excelsior And Residue, Mark S. Koepke
Aspen Bibliography
No abstract provided.
Applying Research Information To Aspen Management Decisions--National Forests, David L. Hessel
Applying Research Information To Aspen Management Decisions--National Forests, David L. Hessel
Aspen Bibliography
No abstract provided.
Aspen Mortality In Rocky Mountain Campgrounds, Thomas E. Hinds
Aspen Mortality In Rocky Mountain Campgrounds, Thomas E. Hinds
Aspen Bibliography
Aspens die from canker disease infections as a result of mechanical injuries to the live bark inflicted by thoughtless campers. Dead trees usually are cut to reduce camper hazard. Aspen loss is related to campground age. A desirable aspen-type camp unit can be degraded to a treeless site of grass, forbs, and shrubs within 10 to 20 years. The management of aspen campgrounds must be altered if the resource is to be maintained.
Response Of Aspen To Various Harvest Techniques, Howard R. Hittenrauch
Response Of Aspen To Various Harvest Techniques, Howard R. Hittenrauch
Aspen Bibliography
No abstract provided.
Utilization And Marketing As Tools For Aspen Management In The Rocky Mountains, D.L. Hessel, D.R. Betters, T.J. Loring, L.D. Porter, J.E. Bennett
Utilization And Marketing As Tools For Aspen Management In The Rocky Mountains, D.L. Hessel, D.R. Betters, T.J. Loring, L.D. Porter, J.E. Bennett
Aspen Bibliography
No abstract provided.
Problems And Opportunities Associated With Aspen Logging Systems, Wendell H. Groff
Problems And Opportunities Associated With Aspen Logging Systems, Wendell H. Groff
Aspen Bibliography
The opportunities in equipment selection, production ranges and specialization available to a logger producing volume from a coniferous species in many cases are not available to an aspen logger. The logger must identify the limiting factors and design a logging system accordingly.
Aspen Stands As Wildfire Fuel Breaks, Gilbert H. Fechner, Jack S. Barrows
Aspen Stands As Wildfire Fuel Breaks, Gilbert H. Fechner, Jack S. Barrows
Aspen Bibliography
No abstract provided.
Bird Populations Of Aspen Forests In Western North America, J.A. Douglas Flack
Bird Populations Of Aspen Forests In Western North America, J.A. Douglas Flack
Aspen Bibliography
The patterning of populations of plants and animals is probably the result of selection over time of organisms according to their individual physiological tolerances, behavioral adaptations to an environmental complex, and geographical availability (Gleason 1926).
Genetics Of Quaking Aspen, Dean W. Einspahr, Lawson L. Winton
Genetics Of Quaking Aspen, Dean W. Einspahr, Lawson L. Winton
Aspen Bibliography
No abstract provided.
Aspen Resource In The Southwest, Darrell W. Crawford
Aspen Resource In The Southwest, Darrell W. Crawford
Aspen Bibliography
There is a relatively large source of unused aspen in the Southwest. If markets can be developed, there are challenging opportunities to utilize more of this fiber. Most aspen in the Southwest is classified in the marginal component because of steep slopes, accessibility and low market values. To meet the logging constraints of this component is a real challenge to prospective purchasers. However, commercial opportunities are feasible on the Carson, Santa Fe, Apache and Kaibab National Forests.
Guidelines For Aspen Management, David R. Betters
Guidelines For Aspen Management, David R. Betters
Aspen Bibliography
No abstract provided.
Hypoxylon Canker Of Aspen Associated With Saperda Inornata Galls, N.A. Anderson, M.E. Ostry, G.W. Anderson
Hypoxylon Canker Of Aspen Associated With Saperda Inornata Galls, N.A. Anderson, M.E. Ostry, G.W. Anderson
Aspen Bibliography
No abstract provided.