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Articles 901 - 930 of 1018
Full-Text Articles in Ecology and Evolutionary Biology
Energy Values Of Nine Populus Clones, Terry F. Strong
Energy Values Of Nine Populus Clones, Terry F. Strong
Aspen Bibliography
Compares calorific values for components of nine Populus clones. The components include stem wood, stem bark, and branches. Also compares calorific values for clones of balsam poplar and black cottonwood parentages.
Northeastern Forest Experiment Station: Oak Site Index And Biomass Yield In Upland Oak And Cove Hardwood Timber Types In West Virginia, Harry V. Wiant, Michael S. Fountain
Northeastern Forest Experiment Station: Oak Site Index And Biomass Yield In Upland Oak And Cove Hardwood Timber Types In West Virginia, Harry V. Wiant, Michael S. Fountain
Aspen Bibliography
No abstract provided.
Ecology And Management Of Ruffed Grouse, Judith L. Landry
Ecology And Management Of Ruffed Grouse, Judith L. Landry
Aspen Bibliography
No abstract provided.
Propagation Of Quaking Aspen (Populus Tremuloides Michx.) From Root Cuttings, Karen Elizabeth Burr
Propagation Of Quaking Aspen (Populus Tremuloides Michx.) From Root Cuttings, Karen Elizabeth Burr
Aspen Bibliography
Lateral root cuttings were collected at five quaking aspen (Populus tremuloides Michx.) clones in Larimer County, Colorado on October 2, 1977 and May 30, 1978. The October 1977 root cuttings were stored eight months in air-tight plastic bags at 0 to 4°C. On June 1, 1978 the stored (October 1977) and the fresh (May 1978) root cuttings were planted in a greenhouse propagation bench. All sprouts that developed were allowed to grow on half of the 10-cm long root cuttings randomly selected as controls. On the remaining half of the root cuttings, designated pruned, all but the tallest sprout were …
A Biotic Analysis Of The Dobbs Park Natural Area With Emphasis On Spatial Distribution Of Trees In The Old-Growth Forest Section, Ronald L. Helms
A Biotic Analysis Of The Dobbs Park Natural Area With Emphasis On Spatial Distribution Of Trees In The Old-Growth Forest Section, Ronald L. Helms
All-Inclusive List of Electronic Theses and Dissertations
Dobbs Park is a 105-acre tract, located at the east edge of Terre Haute, Indiana. Community types range from grass-forb to a 14-acre mature deciduous forest. The tract was divided into 36 units from which 14 community types were developed. The large number of community types appears to be a product of discontinued tillage or grazing within various sections of the tract at different times. The mature forest is largely upland depressional, much of which is subject to periodic pending. Dominants among the 34 tree species present are elms (Ulmus americana, rubra and thomasii) and ashes (Fraxinus americana and pennsylvanica) …
Aspen-Birch Forest, Donald Rakstad, John R. Probst
Aspen-Birch Forest, Donald Rakstad, John R. Probst
Aspen Bibliography
No abstract provided.
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.
Aspen Forest (50-Year), Connie J. Pearson, John R. Probst
Aspen Forest (50-Year), Connie J. Pearson, John R. Probst
Aspen Bibliography
No abstract provided.
Aerial Stand Volume Table For Plains Cottonwood In Eastern Colorado, Carleton B. Edminster, James R. Getter
Aerial Stand Volume Table For Plains Cottonwood In Eastern Colorado, Carleton B. Edminster, James R. Getter
Aspen Bibliography
No abstract provided.
Long-Term Changes In Cottonwoods On A Grazed And An Ungrazed Plains Bottomland In Northeastern Colorado, Glenn L. Crouch
Long-Term Changes In Cottonwoods On A Grazed And An Ungrazed Plains Bottomland In Northeastern Colorado, Glenn L. Crouch
Aspen Bibliography
No abstract provided.
Fire-Decay: Interactive Roles Regulating Wood Accumulation And Soil Development In The Northern Rocky Mountains, A. E. Harvey, M. J. Larsen, M. F. Jurgensen
Fire-Decay: Interactive Roles Regulating Wood Accumulation And Soil Development In The Northern Rocky Mountains, A. E. Harvey, M. J. Larsen, M. F. Jurgensen
Aspen Bibliography
Decay and fire play interactive roles in recycling wood and other organic materials in forest ecosystems, and contribute to the development of high quality soils in the Northern Rocky Mountains. Decayed wood, charcoal, and other decomposed organic matter are the principal media for ectomycorrhizal and nonsymbiotic nitrogen fixing microbes. The activities of these microbes are critical to the growth of forest trees. The balance between decay and fire, as it affects the amount, distribution, and type of organic matter, controls the ability of forest soils to support the growth of trees.
Estimating The Volume Of Hardwood Crowns, Stems, And The Total Tree, Douglas R. Phillips, Noel D. Cost
Estimating The Volume Of Hardwood Crowns, Stems, And The Total Tree, Douglas R. Phillips, Noel D. Cost
Aspen Bibliography
No abstract provided.
Preliminary Classification For The Coniferous Forest And Woodland Series Of Arizona And New Mexico, Earle F. Layser, Gilbert H. Schubert
Preliminary Classification For The Coniferous Forest And Woodland Series Of Arizona And New Mexico, Earle F. Layser, Gilbert H. Schubert
Aspen Bibliography
The vegetation of southwestern United States, because of this geographic area's climatic patterns and extreme ranges in topographic relief, is complex and diverse.
Equations Predicting Primary Productivity (Biomass) Of Trees, Shrubs And Lesser Vegetation Based On Current Literature, W. Stanek, D. State
Equations Predicting Primary Productivity (Biomass) Of Trees, Shrubs And Lesser Vegetation Based On Current Literature, W. Stanek, D. State
Aspen Bibliography
No abstract provided.
Feeding Preference Of Penned White-Tailed Deer For Hybrid Popular Clones, Richard L. Verch
Feeding Preference Of Penned White-Tailed Deer For Hybrid Popular Clones, Richard L. Verch
Aspen Bibliography
No abstract provided.
Winter Diets Of Elk And Deer In The Blue Mountains, Oregon, Jon Skovlin, Martin Vavra
Winter Diets Of Elk And Deer In The Blue Mountains, Oregon, Jon Skovlin, Martin Vavra
Aspen Bibliography
No abstract provided.
Elk-Aspen Relationships On A Prescribed Burn, Joseph V. Basile
Elk-Aspen Relationships On A Prescribed Burn, Joseph V. Basile
Aspen Bibliography
No abstract provided.
Aspen Clearcut (2-Year), Connie J. Pearson, John R. Probst
Aspen Clearcut (2-Year), Connie J. Pearson, John R. Probst
Aspen Bibliography
No abstract provided.
Mature Aspen Forest, Donald Rakstad, John R. Probst
Mature Aspen Forest, Donald Rakstad, John R. Probst
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.
Conflict In Outdoor Recreation, Gerald R. Jacob
Conflict In Outdoor Recreation, Gerald R. Jacob
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The causes of conflict among users of outdoor recreation resources have received little attention from recreation researchers. Knowledge of factors responsible for conflict might assist recreation planners' attempts to reduce future instances of conflict and help management focus its conflict resolution efforts. A theory of conflict is offered as the first step in systematically procuring such knowledge. A definition and characteristics of outdoor recreation conflicts are presented; four comprehensive causes of user conflicts are proposed. Ten propositions are used to link these factors to conflict and suggest future research hypotheses. The social psychological dynamics of conflict, as described here, have …
Herbaceous Production In Burned-Cut Burned-Uncut And Control Areas Of A Chamaecyparis Thyoides (L.) Bsp (Cupressaceae) Stand In The Great Dismal Swamp, Caroline Elisabeth Mckinley
Herbaceous Production In Burned-Cut Burned-Uncut And Control Areas Of A Chamaecyparis Thyoides (L.) Bsp (Cupressaceae) Stand In The Great Dismal Swamp, Caroline Elisabeth Mckinley
Biological Sciences Theses & Dissertations
The herbaceous layer of an Atlantic white cedar (Chamaecyparis thyoides) stand in the Great Dismal Swamp was sampled to estimate the productivity of two burned areas and a control area. The herbaceous vegetation was sampled along three transects utilizing the harvest method and productivity values were estimated using peak biomass values for each individual species. The burned-cut area had the highest productivity (3623 kg ha-l yr-1) and was characterized by species of the Asteraceae, Poaceae, and Cyperaceae. The burned-uncut area had a productivity value of 1636 kg ha-1 yr-1 with similar species of the Asteraceae …
A Firm Stand For The Quaking Aspen, Robert F. Jones
A Firm Stand For The Quaking Aspen, Robert F. Jones
Aspen Bibliography
No abstract provided.
Assessment Of Regeneration Stocking Standards Used In Alberta: A Follow-Up, I. E. Bella, J. P. Defranceschi
Assessment Of Regeneration Stocking Standards Used In Alberta: A Follow-Up, I. E. Bella, J. P. Defranceschi
Aspen Bibliography
No abstract provided.
Equations For Estimating Stand Establishment, Release, And Thinning Costs In The Lake States, Jeffrey T. Olson, Allen L. Lundgreen, Dietmar Rose
Equations For Estimating Stand Establishment, Release, And Thinning Costs In The Lake States, Jeffrey T. Olson, Allen L. Lundgreen, Dietmar Rose
Aspen Bibliography
No abstract provided.
Characterizing The Growth Dynamics Of Lake States Aspen, Thomas Edward Burk
Characterizing The Growth Dynamics Of Lake States Aspen, Thomas Edward Burk
Aspen Bibliography
No abstract provided.
Aspen Sucker Production And Growth From Outplanted Root Cuttings, Donald A. Perala
Aspen Sucker Production And Growth From Outplanted Root Cuttings, Donald A. Perala
Aspen Bibliography
Aspen suckers from 1-m-long root cuttings survived and grew better than those from 12.5-cm-long cuttings. Sucker survival and growth were also inversely related to parent root diameter. Discusses the practical implications for aspen management.
Our Western Aspen Ecosystem: Quest For Management, Norbert V. Debyle
Our Western Aspen Ecosystem: Quest For Management, Norbert V. Debyle
Aspen Bibliography
No abstract provided.
Hypoxylon Mammatum Pathotoxin Responsible For Canker Formation In Quaking Aspen, Arthur L. Schipper, Jr.
Hypoxylon Mammatum Pathotoxin Responsible For Canker Formation In Quaking Aspen, Arthur L. Schipper, Jr.
Aspen Bibliography
No abstract provided.
Tree To Chips To Red Meat To Steaks, It Serves As Emergency Livestock Feed, Les Kamstra
Tree To Chips To Red Meat To Steaks, It Serves As Emergency Livestock Feed, Les Kamstra
Aspen Bibliography
We must be resourceful. Our "natural" resources are becoming scarcer every day, while waste products mushroom in dumps, along roadsides, in the water and air.