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- Aspen (36)
- Populus tremuloides (30)
- Climate change (15)
- Quaking aspen (9)
- Boreal forest (7)
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- Herbivory (6)
- Biodiversity (5)
- Climate (5)
- Populus tremula (5)
- Trembling aspen (5)
- Trophic cascade (5)
- Wildfire (5)
- Boreal mixedwoods (4)
- Drought (4)
- Elk (4)
- European aspen (4)
- Fire ecology (4)
- Remote sensing (4)
- White spruce (4)
- Biomass (3)
- Competition (3)
- Fire (3)
- Fire regimes (3)
- Forest (3)
- Gene flow (3)
- Individual-based model (3)
- Keystone species (3)
- Lodgepole pine (3)
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Articles 271 - 293 of 293
Full-Text Articles in Agriculture
Influence Of Fire On Aspen, K. W. Horton, E. J. Hopkins
Influence Of Fire On Aspen, K. W. Horton, E. J. Hopkins
Aspen Bibliography
No abstract provided.
Review Of Silvicultural Research: White Spruce And Trembling Aspen Cover Types, Mixedwood Forest Section, Boreal Forest Region, Alberta-Saskatchewan-Manitoba, J. M. Jarvis, G. A. Steneker, R. M. Waldron, J. C. Lees
Review Of Silvicultural Research: White Spruce And Trembling Aspen Cover Types, Mixedwood Forest Section, Boreal Forest Region, Alberta-Saskatchewan-Manitoba, J. M. Jarvis, G. A. Steneker, R. M. Waldron, J. C. Lees
Aspen Bibliography
The Department of Forestry has been carrying on silvicultural research in the white spruce (Picea glauca (Moench) Voss) and trembling aspen (Populus tremuloides Michx.) cover types in the Mixedwood Forest Section of Alberta, Saskatchewan and Manitoba for about 40 years. Because of the needs of industry most of this research has been focused on spruce, and only as small portion on aspen. Much of the research is concerned with basic problems and the findings in one area may be applied directly or with minor modification throughout the entire Mixedwood Forest Section. Only a minor part of the total …
Aspen-Elk Relationships On The Northern Yellowstone Winter Range, William J. Barmore Jr.
Aspen-Elk Relationships On The Northern Yellowstone Winter Range, William J. Barmore Jr.
Aspen Bibliography
No abstract provided.
Cacodylic Acid As A Silvicide, Maurice W. Day
Cacodylic Acid As A Silvicide, Maurice W. Day
Aspen Bibliography
This report deals with the effectiveness of cacodylic acid (dimethylarsenic acid) as a silvicide for undesirable trees. Cacodylic acid has been used successfully as an herbicide for the destruction of grasses and weeds. Experimental work with this material was begun during the 1963 field season, and continued during 1964, to permit complete evaluation of the results. It appears that cacodylic acid has considerable potential as a silvicide.
Aspen Snag Yields Record Bitterbrush Seed Cache, Edward R. Schneegas
Aspen Snag Yields Record Bitterbrush Seed Cache, Edward R. Schneegas
Aspen Bibliography
No abstract provided.
Volume Tables For Aspen In Colorado, Geraldine Peterson
Volume Tables For Aspen In Colorado, Geraldine Peterson
Aspen Bibliography
No abstract provided.
Some Aspects Of Regeneration Silviculture In Spruce-Aspen Stands In Alberta, L. A. Smithers
Some Aspects Of Regeneration Silviculture In Spruce-Aspen Stands In Alberta, L. A. Smithers
Aspen Bibliography
Surveys of spruce-aspen stands in Northern Alberta have shown that natural regeneration of white spruce is generally a failure on areas which have been logged but not burned (Candy 1951).
Growth Of Alberta White Spruce After Release From Aspen Competition, L. A. Smithers, G Ontkean
Growth Of Alberta White Spruce After Release From Aspen Competition, L. A. Smithers, G Ontkean
Aspen Bibliography
At the present time spruce sawtimber is the most important single commodity produced from the forests of Alberta.
Aspen Leaf Blight In The Intermountain Region, James L. Mielke
Aspen Leaf Blight In The Intermountain Region, James L. Mielke
Aspen Bibliography
No abstract provided.
The Growth And Yield Of Aspen In Saskatchewan, C. L. Kirby, W. S. Bailey, J. G. Gilmour
The Growth And Yield Of Aspen In Saskatchewan, C. L. Kirby, W. S. Bailey, J. G. Gilmour
Aspen Bibliography
No abstract provided.
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.
Early Release From Aspen Improves Yield Of Pine Plantations, E.I. Roe
Early Release From Aspen Improves Yield Of Pine Plantations, E.I. Roe
Aspen Bibliography
No abstract provided.
Aspen Management Problems Of The Lake States, Z.A. Zasada
Aspen Management Problems Of The Lake States, Z.A. Zasada
Aspen Bibliography
No abstract provided.
How To Control Undesirable Trees And Shrubs, Maurice W. Day
How To Control Undesirable Trees And Shrubs, Maurice W. Day
Aspen Bibliography
No abstract provided.
Aspen Defiberization And Refining Of Product, Robert Craig Jr.
Aspen Defiberization And Refining Of Product, Robert Craig Jr.
Aspen Bibliography
Because of the great demand for wood fiber and because there is an abundance of aspen available1/ for this purpose, its conversion into a usable fiberized material offers possibilities. It also affords an outlet for low-quality bolts developed in any aspen logging operation or from land of poor quality.
Aspen Properties And Uses, Zigmond A. Zasada
Aspen Properties And Uses, Zigmond A. Zasada
Aspen Bibliography
Because of the large demand for lumber during the last 10 years, and particularly during the war period, aspen has entered many new fields of use. At present there is widespread interest in the possibilities of building new industries and extending the life of old ones by increased use of aspen. Many people are interested in becoming familiar with this wood. This report has been prepared to give general information on the properties and present uses of aspen and also to help in correcting some of the existing erroneous ideas about this wood.
Seeding Grass On Deteriorated Aspen Range, A. Perry Plummer, George Stewart
Seeding Grass On Deteriorated Aspen Range, A. Perry Plummer, George Stewart
Aspen Bibliography
The herbaceous undercover on much of the aspen range in the Intermountain region is badly deteriorated. These areas, naturally highly productive, when revegetated can contribute greatly towards a much needed supply of range forage. One of the major obstacles to successful seeding has been the difficulty of getting the seeds covered with soil since both standing and fallen trees interfere with the use of drills, harrows, or other machinery. In the search for methods to overcome this difficulty, it was found that for open aspen stands the covering of seeds is unnecessary when the right precautions are taken in other …
How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse
How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse
Aspen Bibliography
Additional low cost forage is urgently needed by Utah's range livestock industry. Seeding of depleted tracts in accordance with recently developed methods and principles will help supply this forage and is entirely feasible. Where the value of the increased forage will repay the cost of planting, careful reseeding of selected sites is fully justified.
The important part that reseeding can play in restoring ranges to their former capacity has been demonstrated. Although satisfactory results can be obtained on many sites during average or better years, much more study is needed to insure consistent success in abnormal years and to extend …
The Effect Of Fomes Ignarius On Populus Tremuloides In The Gallatin National Forest Of Montana, Marvin F. Kelly
The Effect Of Fomes Ignarius On Populus Tremuloides In The Gallatin National Forest Of Montana, Marvin F. Kelly
Aspen Bibliography
No abstract provided.
Weather And Plant-Development Data As Determinants Of Grazing Periods On Mountain Range, David F. Costello, Raymond Price
Weather And Plant-Development Data As Determinants Of Grazing Periods On Mountain Range, David F. Costello, Raymond Price
Aspen Bibliography
Fundamental in economical range-resource management is the determination of proper grazing periods. It is of prime importance to be able to establish a date in the spring when the range has produced sufficient feed to keep livestock in thrifty condition, when it is reasonably safe from excessive trampling and packing of the soil, and when the more important key forage plants have attained sufficient development to withstand grazing use. Such opening dates, as well as the time to defer and rotate grazing and to remove livestock from the range, are dependent in part on the prevailing weather conditions and on …
Grazing Periods And Forage Production On The National Forests, Arthur W. Sampson, Harry E. Malmsten
Grazing Periods And Forage Production On The National Forests, Arthur W. Sampson, Harry E. Malmsten
Aspen Bibliography
Stockmen in the West have always had confidence in the adequacy of the native forage crop to provide pasturage for their livestock. Indeed, under normal climatic conditions this enormous natural resource has not failed the grazier, except where it has been called upon to meet unreasonable demands. The productivity of the range has declined sharply, however, wherever the requirements of plant growth have been disregarded for many years in succession. Where there has been too early or too frequent and to heavy grazing, undue trampling, or some other unsatisfactory feature of range use, the results have been uniformly bad. Many …
Climate And Plant Growth In Certain Vegetative Associations, Arthur W. Sampson
Climate And Plant Growth In Certain Vegetative Associations, Arthur W. Sampson
Aspen Bibliography
The relation of climate to the growth and development of vegetation is of profound importance in both practical and experimental agriculture. It is extremely useful to know the cause of successful growth and establishment, or of partial success or failure, of various species in different plant associations and under widely contrasted climatic conditions. The climatic requirements of various plant types are largely responsible for the results obtained in the case of experimental seedings and plantings of most species. Once the adverse climatic factors are definitely known, failures with plants may be largely avoided by the judicious selection of sites or …
The Story Of Aspen, Enos Mills