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Full-Text Articles in Life Sciences

Virus And Virus-Like Diseases Of Poplar: Are They Threatening Diseases?, S. Navratil Jan 1979

Virus And Virus-Like Diseases Of Poplar: Are They Threatening Diseases?, S. Navratil

Aspen Bibliography

No abstract provided.


Wildlife Habitat Investigations And Management Implications On The Bridger-Teton National Forest, G.E. Gruell, M.S. Boyce, L.D. Hayden Wing Jan 1979

Wildlife Habitat Investigations And Management Implications On The Bridger-Teton National Forest, G.E. Gruell, M.S. Boyce, L.D. Hayden Wing

Aspen Bibliography

Grazing impact by elk and moose has been a point of concern in Jackson Hole for many years. Concern has been primarily directed towards sparsely vegetated south aspects, aspen stands, and willow bottoms. Numerous transects have quantified heavy foliage utilization. Trend studies have been mostly inconclusive. Study of historical narratives have quantified heavy forage utilization. Trend studies have been mostly inconclusive. Study of historical narratives, early photographs and consideration of plant physiology, soils data, and fire ecology have aided interpretations of vegetal trend and plant succession in recent years. Photographs show little change on sparsely vegetated sites. Soils information on …


Aspen Forest (20-Year), Connie J. Pearson, John B. Probst Jan 1979

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.


Metric Site Index Curves For Aspen, Birch And Conifers In The Lake States, P.R. Laidly Jan 1979

Metric Site Index Curves For Aspen, Birch And Conifers In The Lake States, P.R. Laidly

Aspen Bibliography

No abstract provided.


A Trap To Measure Populus And Salix Seed Fall, J.C. Zasada, R. Densmore Jan 1979

A Trap To Measure Populus And Salix Seed Fall, J.C. Zasada, R. Densmore

Aspen Bibliography

No abstract provided.


Regeneration And Productivity Of Aspen [Populus Tremuloides] Grown On Repeated Short Rotations [In Minnesota], Donald A. Perala Jan 1979

Regeneration And Productivity Of Aspen [Populus Tremuloides] Grown On Repeated Short Rotations [In Minnesota], Donald A. Perala

Aspen Bibliography

No abstract provided.


Discoloured Wood Of Aspen Caused By Increment Boring, G. Laflamme Jan 1979

Discoloured Wood Of Aspen Caused By Increment Boring, G. Laflamme

Aspen Bibliography

No abstract provided.


Influence Of Fire On Vegetation Production In The Aspen Ecosystem In Western Wyoming, Dale L. Bartos, Walter F. Mueggler Jan 1979

Influence Of Fire On Vegetation Production In The Aspen Ecosystem In Western Wyoming, Dale L. Bartos, Walter F. Mueggler

Aspen Bibliography

One hundred and sixty hectares of the upper Gros Ventre elk winter range were burned to improve forage production and to rejuvenate the decadent aspen.


Aspen Clearcut (8-Year), Donald Rakstad, John R. Probst Jan 1979

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 Clearcut (2-Year), Connie J. Pearson, John R. Probst Jan 1979

Aspen Clearcut (2-Year), Connie J. Pearson, John R. Probst

Aspen Bibliography

No abstract provided.


Seasonal Variation In Soil Nutrients Under Six Rocky Mountain Vegetation Types, T. Weaver, F. Forcella Jan 1979

Seasonal Variation In Soil Nutrients Under Six Rocky Mountain Vegetation Types, T. Weaver, F. Forcella

Aspen Bibliography

No abstract provided.


Creating Stable Shrub Communities For Managed Openings In The Aspen Forest, Donald A. Perala, R.W. Sorensen Jan 1979

Creating Stable Shrub Communities For Managed Openings In The Aspen Forest, Donald A. Perala, R.W. Sorensen

Aspen Bibliography

No abstract provided.


Shrub Nesting Of The Red-Eyed Vireo [Vireo Olivaceous] In Relation To Structure Of Aspen [Populus Tremuloides] Forests [In Northern Minnesota], W.J. Mattson, Jr Jan 1979

Shrub Nesting Of The Red-Eyed Vireo [Vireo Olivaceous] In Relation To Structure Of Aspen [Populus Tremuloides] Forests [In Northern Minnesota], W.J. Mattson, Jr

Aspen Bibliography

No abstract provided.


A Classification Of Spruce-Fir And Mixed Conifer Habitat Types Of Arizona And New Mexico, William H. Moir, John A. Ludwig Jan 1979

A Classification Of Spruce-Fir And Mixed Conifer Habitat Types Of Arizona And New Mexico, William H. Moir, John A. Ludwig

Aspen Bibliography

Spruce-fir forests occupy less than 0.5% of Arizona and about 2% of New Mexico. Despite this limited distribution, these high elevation forests are important resources, providing major snow catchement and watershed areas and serving as focal points for winter and summer recreation. The subtending mixed conifer forests, covering about 3% and 4% of Arizona and New Mexico, respectively, are intensively utilized for timber, range and wildlife production, watershed management, and recreation. These forest types respond in complex ways to many man-caused and natural impacts and treatments such as timber harvesting, fire, recreation usage, and foraging by livestock and game.


Elk Pellet Group Distributions And Rates Of Deposition In Aspen And Lodgepole Pine Habitats, W.B. Collins, P.J. Urness Jan 1979

Elk Pellet Group Distributions And Rates Of Deposition In Aspen And Lodgepole Pine Habitats, W.B. Collins, P.J. Urness

Aspen Bibliography

No abstract provided.


Quaking Aspen--Seed Germination And Early Seedling Growth, Walter T. Mcdonough Jan 1979

Quaking Aspen--Seed Germination And Early Seedling Growth, Walter T. Mcdonough

Aspen Bibliography

No abstract provided.


Estimating The Volume Of Hardwood Crowns, Stems, And The Total Tree, Douglas R. Phillips, Noel D. Cost Jan 1979

Estimating The Volume Of Hardwood Crowns, Stems, And The Total Tree, Douglas R. Phillips, Noel D. Cost

Aspen Bibliography

No abstract provided.


Winter Diets Of Elk And Deer In The Blue Mountains, Oregon, Jon Skovlin, Martin Vavra Jan 1979

Winter Diets Of Elk And Deer In The Blue Mountains, Oregon, Jon Skovlin, Martin Vavra

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 Jan 1979

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.


Feeding Preference Of Penned White-Tailed Deer For Hybrid Popular Clones, Richard L. Verch Jan 1979

Feeding Preference Of Penned White-Tailed Deer For Hybrid Popular Clones, Richard L. Verch

Aspen Bibliography

No abstract provided.


Long-Term Changes In Cottonwoods On A Grazed And An Ungrazed Plains Bottomland In Northeastern Colorado, Glenn L. Crouch Jan 1979

Long-Term Changes In Cottonwoods On A Grazed And An Ungrazed Plains Bottomland In Northeastern Colorado, Glenn L. Crouch

Aspen Bibliography

No abstract provided.


Aerial Stand Volume Table For Plains Cottonwood In Eastern Colorado, Carleton B. Edminster, James R. Getter Jan 1979

Aerial Stand Volume Table For Plains Cottonwood In Eastern Colorado, Carleton B. Edminster, James R. Getter

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 Jan 1979

Preliminary Classification For The Coniferous Forest And Woodland Series Of Arizona And New Mexico, Earle F. Layser, Gilbert H. Schubert

Aspen Bibliography

No abstract provided.


Equations Predicting Primary Productivity (Biomass) Of Trees, Shrubs And Lesser Vegetation Based On Current Literature, W. Stanek, D. State Jan 1979

Equations Predicting Primary Productivity (Biomass) Of Trees, Shrubs And Lesser Vegetation Based On Current Literature, W. Stanek, D. State

Aspen Bibliography

No abstract provided.


Elk-Aspen Relationships On A Prescribed Burn, Joseph V. Basile Jan 1979

Elk-Aspen Relationships On A Prescribed Burn, Joseph V. Basile

Aspen Bibliography

No abstract provided.


Aspen-Birch Forest, Donald Rakstad, John R. Probst Jan 1979

Aspen-Birch Forest, Donald Rakstad, John R. Probst

Aspen Bibliography

No abstract provided.


Mature Aspen Forest, Donald Rakstad, John R. Probst Jan 1979

Mature Aspen Forest, Donald Rakstad, John R. Probst

Aspen Bibliography

No abstract provided.


Aspen Forest (50-Year), Connie J. Pearson, John R. Probst Jan 1979

Aspen Forest (50-Year), Connie J. Pearson, John R. Probst

Aspen Bibliography

No abstract provided.


Tree Rings And Kaibab North Deer Hunting Success, 1925-1975, C.E. Young Jan 1979

Tree Rings And Kaibab North Deer Hunting Success, 1925-1975, C.E. Young

Aspen Bibliography

Knowledge of the biotic and abiotic factors producing long and short-term changes in numbers provides the basis for managing wildlife populations. Frequently, evaluation of these factors over a long time period is impossible. the large, well-documented past fluctuations of mule deer (Odocoileus hemionus) numbers on Arizona's North Kaibab plateau (Rasmussen, 1941; Russo, 1964; Caughley, 1970; Burk, 1973) make it potentially useful for examining long-term effects.


Sucker Regeneration In A Utah Aspen Clone After Clearcutting, Partial Cutting, Scarification And Girdling, George A. Schier, Arthur D. Smith Jan 1979

Sucker Regeneration In A Utah Aspen Clone After Clearcutting, Partial Cutting, Scarification And Girdling, George A. Schier, Arthur D. Smith

Aspen Bibliography

No abstract provided.