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Full-Text Articles in Forest Sciences
Pando's Pulse: Vital Signs Signal Need For Course Correction At World-Renowned Aspen Forest, Paul C. Rogers
Pando's Pulse: Vital Signs Signal Need For Course Correction At World-Renowned Aspen Forest, Paul C. Rogers
Aspen Bibliography
Upland aspen (Populus spp.) forests contribute significantly to biodiversity in their circumboreal role as keystone species. As aspen ecosystems flourish or diminish, myriad dependent species follow suit. The 43-hectare Pando aspen (Populus tremuloides Michx.) clone in Utah, USA, is thought to be the largest living organism on earth, but is faltering due to chronic herbivory. Long-term resilience in aspen communities, including Pando, rests on successful recruitment of vegetative suckers that are nutritiously desirable to browsing ungulates. Here, I evaluate aspen reproduction alongside numerous vital indicators of Pando's status in the first trend assessment of this embattled iconic forest. …
Rapid Regeneration Offsets Losses From Warming-Induced Tree Mortality In An Aspen-Dominated Broad-Leaved Forest In Northern China, Pengwu Zhao, Chongyang Xu, Mei Zhou, Bo Zhang, Peng Ge, Nan Zeng, Hongyan Liu
Rapid Regeneration Offsets Losses From Warming-Induced Tree Mortality In An Aspen-Dominated Broad-Leaved Forest In Northern China, Pengwu Zhao, Chongyang Xu, Mei Zhou, Bo Zhang, Peng Ge, Nan Zeng, Hongyan Liu
Aspen Bibliography
Worldwide tree mortality as induced by climate change presents a challenge to forest managers. To successfully manage vulnerable forests requires the capacity of regeneration to compensate for losses from tree mortality. We observed rapid regeneration and the growth release of young trees after warming-induced mortality in a David aspen-dominated (Populus davidiana) broad-leaved forest in Inner Mongolia, China, as based on individual tree measurements taken in 2012 and 2015 from a 6-ha permanent plot. Warming and drought stress killed large trees 10–15 m tall with a total number of 2881 trees during 2011–2012, and also thinned the upper crowns. …
Suckering Response Of Aspen To Traffic-Induced-Root Wounding And The Barrier-Effect Of Log Storage, Kevin N. Renkema, Simon M. Landhausser, Victor J. Lieffers
Suckering Response Of Aspen To Traffic-Induced-Root Wounding And The Barrier-Effect Of Log Storage, Kevin N. Renkema, Simon M. Landhausser, Victor J. Lieffers
Aspen Bibliography
In a growth chamber, we tested how the seasonal timing of placing a physical barrier (simulating a possible effect of log storage) and inflicting root damage impacted aspen (Populus tremuloides Michx.) root systems and their suckering capability. Roots from 4-year-old saplings were used, and one half of these root systems had the above-ground portion cut in the winter (dormant) while the other half was cut during the growing season in the summer. Damage was inflicted to the roots by driving a large farm tractor over them, and a covering treatment was applied using a polystyrene board to prevent suckers from …
Does Moose Browsing Threaten European Aspen Regeneration In Koli National Park, Finland?, Sauli Harkonen, Kalle Eerikainen, Riikka Lahteenmaki, Risto Heikkila
Does Moose Browsing Threaten European Aspen Regeneration In Koli National Park, Finland?, Sauli Harkonen, Kalle Eerikainen, Riikka Lahteenmaki, Risto Heikkila
Aspen Bibliography
Large European aspen (Populus tremula) trees host hundreds of species of which many are threatened species of conifer-dominated, old-growth boreal forests. Aspen is also one of the deciduous tree species most intensively used by moose (Alces alces) in Finland. In conservation areas aspen regeneration is facilitated by large-scale disturbances, especially fires and windstorms, and also by mortality of individual trees and small-scale disturbances that create small openings. These aggregated patches of young aspens provide high quality feeding sites for moose. In Finland, it has been hypothesized that intense browsing pressure by moose on aspen may prevent new aspen cohorts from …
Restoration Of Aspen-Dominated Ecosystems In The Lake States, Douglas M. Stone, John D. Elioff, Donald V. Potter, Donald B. Peterson, Robert Wagner
Restoration Of Aspen-Dominated Ecosystems In The Lake States, Douglas M. Stone, John D. Elioff, Donald V. Potter, Donald B. Peterson, Robert Wagner
Aspen Bibliography
A reserve tree method (RTM) of harvesting was installed in six 70 to 75 year old aspen dominated stands to determine if retaining 10 to 15 dominant aspen per acre would decrease sucker density to facilitate restoration of a conifer component. A reserve shelterwood cut was applied to three additional stands to evaluate performance of white pine planted under 50% crown cover. After the first full growing season following harvest, 96% of the RTM harvested areas were stocked; sucker density averaged 27000 per acre versus 38.2 k per acre on a clearcut control, 41% greater. Basal diameter of dominant suckers …
Long-Term Aspen Exclosures In The Yellowstone Ecosystem, Charles E. Kay
Long-Term Aspen Exclosures In The Yellowstone Ecosystem, Charles E. Kay
Aspen Bibliography
Aspen has been declining in the Yellowstone Ecosystem for more than 80 years. Some authors have suggested that aspen is a marginal plant community in Yellowstone and that recent climatic variation has adversely affected aspen, while others contend that excessive browsing by native ungulates is primarily responsible for aspen’s widespread decline. To test these hypotheses, I measured all the long-term aspen exclosures (n = 14) in the Yellowstone Ecosystem. Aspen stands inside all exclosures successfully produced new stems greater than 2 m tall without fire or other disturbance, while few outside stands successfully regenerated due to repeated browsing. Understory species …
Clonal Propagation In Non-Aspen Popular Hybrids, Y.W. Chun
Clonal Propagation In Non-Aspen Popular Hybrids, Y.W. Chun
Aspen Bibliography
Species and hybrids of Populus are considered ideal species for pulpwood, lumber production, and woody biomass production because of their rapid growth, ease of establishment through stem or root cuttings, and relative ease of coppice regeneration [19].
Regeneration Of Aspen By Suckering On Burned Sites In Western Wyoming, D.L. Bartos, W.F. Mueggler, R.B. Campbell, Jr.
Regeneration Of Aspen By Suckering On Burned Sites In Western Wyoming, D.L. Bartos, W.F. Mueggler, R.B. Campbell, Jr.
Aspen Bibliography
Approximately 2.8 million ha of woodlands dominated by quaking aspen (Populus tremuloides Michx.) are scattered throughout the Western United States (Green and Van Hooser 1983).
Mixed Conifer And Aspen Regeneration In Small Clearcuts Within A Partially Harvested Arizona Mixed Conifer Forest, P.F. Ffolliott, G.J. Gottfried
Mixed Conifer And Aspen Regeneration In Small Clearcuts Within A Partially Harvested Arizona Mixed Conifer Forest, P.F. Ffolliott, G.J. Gottfried
Aspen Bibliography
Southwestern mixed conifer forests are found on high-elevation sites, generally above 8,000 feet, throughout Arizona, New Mexico, and southwestern Colorado.
A Survey Of The Harvesting Histories Of Some Poorly Regenerated Aspen Stands In Northern Minnesota, P.C. Bates, C.R. Blinn, A.A. Alm
A Survey Of The Harvesting Histories Of Some Poorly Regenerated Aspen Stands In Northern Minnesota, P.C. Bates, C.R. Blinn, A.A. Alm
Aspen Bibliography
No abstract provided.
Silviculture And Management Of Aspen In Canada: The Western Canada Scene, S. Navratil, I.E. Bella, E.B. Peterson
Silviculture And Management Of Aspen In Canada: The Western Canada Scene, S. Navratil, I.E. Bella, E.B. Peterson
Aspen Bibliography
No abstract provided.
Tall Shrub Dynamics In Northern Minnesota Aspen And Conifer Forests, J.C. Balogh, D.F. Grigal
Tall Shrub Dynamics In Northern Minnesota Aspen And Conifer Forests, J.C. Balogh, D.F. Grigal
Aspen Bibliography
No abstract provided.
Fire Effects In Northeastern Forests: Aspen, C. Rouse
Fire Effects In Northeastern Forests: Aspen, C. Rouse
Aspen Bibliography
No abstract provided.
Aspen Regeneration In 6- To 10-Year-Old Clearcuts In Southwestern Colorado, Glenn L. Crouch
Aspen Regeneration In 6- To 10-Year-Old Clearcuts In Southwestern Colorado, Glenn L. Crouch
Aspen Bibliography
No abstract provided.
Ruffed Grouse Habitat Relationships In Aspen And Oak Forests Of Central Wisconsin Usa, J.F. Kubisiak
Ruffed Grouse Habitat Relationships In Aspen And Oak Forests Of Central Wisconsin Usa, J.F. Kubisiak
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.
Effects Of Partial Cutting On Diseases, Mortality, And Regeneration Of Rocky Mountain Aspen Stands, James W. Walters, Thomas E. Hinds, David W. Johnson, Jerome Beatty
Effects Of Partial Cutting On Diseases, Mortality, And Regeneration Of Rocky Mountain Aspen Stands, James W. Walters, Thomas E. Hinds, David W. Johnson, Jerome Beatty
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.
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.
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.
Some Effects Of Prescribed Burning On Jack Pine Reproduction In Northeastern Minnesota, C.E. Ahlgren
Some Effects Of Prescribed Burning On Jack Pine Reproduction In Northeastern Minnesota, C.E. Ahlgren
Aspen Bibliography
No abstract provided.
Natural Regeneration Of White Spruce Under Spruce-Aspen Shelterwood, B-18a Forest Section, Alberta, J.C. Lees
Natural Regeneration Of White Spruce Under Spruce-Aspen Shelterwood, B-18a Forest Section, Alberta, J.C. Lees
Aspen Bibliography
No abstract provided.
Size Of Aspen Crop Trees Little Affected By Initial Sucker Density, R.W. Sorensen
Size Of Aspen Crop Trees Little Affected By Initial Sucker Density, R.W. Sorensen
Aspen Bibliography
No abstract provided.
The Influence Of Growth Media, Temperatures, And Light Intensities On Aspen Root And Top Growth, G.F. Gifford
The Influence Of Growth Media, Temperatures, And Light Intensities On Aspen Root And Top Growth, G.F. Gifford
Aspen Bibliography
Root and top growth of aspen cuttings in three soils (sand, loam, and clay) were studied in a controlled environmental chamber.
Influence Of Fire On Aspen Suckering, K.W. Horton, E.J. Hopkins
Influence Of Fire On Aspen Suckering, K.W. Horton, E.J. Hopkins
Aspen Bibliography
No abstract provided.
A Test Of Harvest Cutting Methods In Alberta's Spruce-Aspen Forest, J.C. Lees
A Test Of Harvest Cutting Methods In Alberta's Spruce-Aspen Forest, J.C. Lees
Aspen Bibliography
No abstract provided.
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 …
Vegetative Propagation Of Aspen By Greenwood Cuttings, Robert Edward Farmer Jr.
Vegetative Propagation Of Aspen By Greenwood Cuttings, Robert Edward Farmer Jr.
Aspen Bibliography
No abstract provided.
Some Aspects Of The Aspen-Birch-Spruce-Fir Type In Ontario, D.W. Maclean
Some Aspects Of The Aspen-Birch-Spruce-Fir Type In Ontario, D.W. Maclean
Aspen Bibliography
The mixedwood types of the Boreal Forest in Ontario occupy sites that have a high potential for the production of spruce and fir. These types are commonly made up of various mixtures of trembling aspen, white birch, black spruce, white spruce, and balsam fir2. In the unmanaged forest, this mixture of species usually results from fire, and the coniferous component is largely spruce. In the managed forest, fir rather than spruce is likely to be the main coniferous species in the next crop where measures are not employed to alter this trend in succession. This is a matter …
Regenerating Aspen By Suckering In The Southwest, Merylyn M. Larson
Regenerating Aspen By Suckering In The Southwest, Merylyn M. Larson
Aspen Bibliography
Although seeding is necessary for the spread of aspen into new localities, suckering (sprouting from adventitious buds on the roots) is the chief means of reproduction in established stands. Suckering can usually be induced by reducing or eliminating the aspen overstory. 2