Forest Sciences Commons^™

Effect Of Container Size And Harvest Date On The Growth Of Quaking Aspen Populus-Tremuloides Seedlings, L. A. Erhard, J. T. Fisher

Aspen Bibliography

Quaking Aspen (Populus tremuloides Michaux) were
greenhouse grown in four sizes of paraffin-coated containers: 185 cubic centimeters (11 cubic inches), 492 cubic centimeters (30 cubic inches), 1132 cubic centimeters (68 cubic inches), and 1472 cubic centimeters (90cubic inches).

Natural Variation In Merchantable Stem Biomass And Volume Among Clones Of Populus Tremuloides Michx, G.A. Lehn, K.O. Higginbotham

Aspen Bibliography

No abstract provided.

Fire Behaviour In Aspen Slash Fuels As Related To The Canadian Fire Weather Index, M.E. Alexander

Aspen Bibliography

The characteristics and short-term results of experimental prescribed fires in 2-year-old trembling aspen (Populus tremuloides Michx.) logging slash in northern Minnesota have been described by D. A. Perala (1974. Can. J. For. Res. 4: 222-228). The associated burning conditions are expressed here in terms of the weather-dependent numerical fuel moisture codes and fire behavior indexes of the Canadian system of forest fire danger rating.

Rare Vascular Plants Of Maine : A Critical Areas Program Report, Susan C. Gawler, L. M. Eastman

Maine Collection

Rare Vascular Plants of Maine : A Critical Areas Program Report

Based on Rare Vascular Maine Plants (1978) with Additional Herbarium Data and Rare Plants Information by L.M. Eastman.

Introduction, Criteria, Annotated Rare Plant List, Species Accounts, Additional Herbarium Data, County & Town Index Editing by Susan C. Gawler.

Executive Department, State Planning Office, 189 State Street, Augusta, Maine, 04333 (June 1981).

Contents: Acknowledgements / List of Tables / List of Figures / Part One: Introduction / Part Two: List of the Rare Vascular Plants of Maine / Part Three: Species Accounts / Part Four: Subspecific Taxa / Appendices / …

Improving Aspen Poplar Populus-Tremuloides And Prickly Rose Rosa-Acicularis Covered Rangeland With Herbicides And Fertilizer, G. Bowes

Aspen Bibliography

No abstract provided.

Utilization Of Aspen Populus-Tremuloides Trees As A Ruminant Feed Component, M. Singh, L.D. Kamstra

Aspen Bibliography

When traditional roughages are in short supply or high in price, other fibrous feed sources for ruminants should be considered if available at a competitive price. One such fibrous material shown to have potential as a ruminant feed is the aspen tree (Populus tremuloides Michx.) harvested in its entire form to include bark, leaves and trunk. The aspen tree is the most widespread tree species in North America and the least utilized. Estimates exceed 6 million acres of mature trees in an area which would include the Black Hills (58,000 acres), the Great Lakes region and the Rocky …

An Examination Of The Leaf Quaking Adaptation And Stomatal Distribution In Populus-Tremuloides, J.W. Rushin, J.E. Anderson

Aspen Bibliography

The leaves of quaking aspen (Populus tremuloides Michx.) have a flattened petiole that allows them to quake (oscillate and roll) under low wind velocities. It was hypothesized that this adaptation might enable the plant to respond to windy conditions that would increase transpirational losses. No effects of wind with or without leaf quaking on stomatal resistance were observed under controlled conditions in the field. If wind and leaf quaking affect stomatal resistance, such effects must be small in comparison to those caused by other factors such as leaf water potential and ambient humidity.

Aspen leaves are hypostomatal with stomata …

Biomass And Production Of An Aspen-Mixed Hardwood-Spodosol Ecosystem In Northern Wisconsin, John Pastor, J.G. Bockheim

Aspen Bibliography

No abstract provided.

Cryptosphaeria Canker And Libertella Decay Of Aspen, Thomas E. Hinds

Aspen Bibliography

A recently discovered, widely distributed canker disease of aspen and other poplars throughout the Rocky Mountain region is described. Inoculations with ascospore and conidial isolates of Cryptosphaeria populina show the fungus is capable of causing branch, sprout, and sapling mortality, trunk cankers, and the discoloration and decay of aspen stems previously associated with its imperfect stage, Libertella sp. The greatest average canker elongation 50 mo after September inoculations was 33.5 cm with sapwood decay and discoloration extending to 401 cm. The fungus caused an average weight loss of 13.5% in bark, 27.0% in sapwood, and 19.1% in heartwood blocks. Incidence …

Effects Of Storage Temperature And Moisture Stress On Seed Germination And Early Seedling Development Of Trembling Aspen Populus-Tremuloides, G.H. Fechner, K.E. Burr, J.F. Myers

Aspen Bibliography

No abstract provided.

An Approach To Functionalizing Key Environmental Factors Forage Production In Rocky Mountain Aspen Populus-Tremuloides Stands, J.P. Roise, D.R. Betters, B.M. Kent

Aspen Bibliography

No abstract provided.

Aspen Resource Of Minnesota Usa, P.J. Jakes

Aspen Bibliography

No abstract provided.

Observations On The Ecology And Evolution Of Quaking Aspen, Populus Tremuloides, In The Colorado Front Range, Jeffry B. Mitton, Michael C. Grant

Aspen Bibliography

No abstract provided.

Effects Of Annual Burning On Grassland In The Aspen Parkland Of East-Central Alberta, Howard G. Anderson, Arthur W. Bailey

Aspen Bibliography

Annual early spring burning has markedly altered the physiognomy and species composition of aspen parkland vegetation of east-central Alberta. Burning was conducted in April for at least 24 years when soil moisture was normally high. The number of herbaceous species per quadrat doubled while a number of woody species declined slightly.

Fire Temperatures In Grass, Shrub And Aspen Forest Communities Of Central Alberta, A.W. Bailey, M.L. Anderson

Aspen Bibliography

No abstract provided.

The Forest Vegetation At Higher Altitudes In The Chiricahua Mountains Arizona Usa, D.A. Sawyer, T.B. Kinraide

Aspen Bibliography

No abstract provided.

Allelochemic Interference By Quaking Aspen Leaf Litter On Selected Herbaceous Species, P.D. Younger, R.G. Koch, L.A. Kapustka

Aspen Bibliography

No abstract provided.

Effects Of Fertilization On Hypoxylon Canker Of Trembling Aspen, G.E. Teachman, D.J. Frederick, W.E. Perkis, M.F. Jurgensen

Aspen Bibliography

No abstract provided.

Biomass Productivity Of Young Aspen Stands In Western Canada, I.E. Bella, J.P. Defranceschi

Aspen Bibliography

No abstract provided.

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

Aspen Bibliography

No abstract provided.

Brush Control On Sandy Rangelands In Central Alberta, A.W. Bailey, H.G. Anderson

Aspen Bibliography

No abstract provided.

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

Aspen Bibliography

No abstract provided.

Hypoxylon Canker Incidence On Pruned And Unpruned Aspen, Michael E. Ostry, G.W. Anderson

Aspen Bibliography

This sturdy was designed to measure the relation between the incidence of Hypoxylon canker, Hypoxylon mammatum Wahl. Mill., and the presence of branches on an aspen stem.

Phytoalexin Production By Aspen (Populus Tremuloides Michx.) In Response To Infection By Hypoxylon Mammatum (Wahl.) Mill. And Alternaria Spp, G. Flores, M. Hubbes

Aspen Bibliography

Freshly wounded stem sections of P. tremuloides Michx. produce phytoalexin when inoculated with mycelium of Hypoxylon mammatum (Wahl.) Mill., and Alternaria sp. These exudates are inhibitory against spore germination of these two fungi and, although inhibitory against mycelial growth of Alternaria sp., have no effect on the mycelial growth of H. mammatum. It was possible to correlate the amount of phytoalexin elicited by different strains with the inhibitory activity.

Biomass And Nutrient Distribution In Aspen, Pine, And Spruce Stands On The Same Soil Type In Minnesota, David H. Alban, Donald A. Perala, Bryce E. Schlaegel

Aspen Bibliography

Vegetation and soils were sampled in adjacent 40-year-old stands of red pine (Pinus resinosa Ait.), jack pine (Pinus banksiana Lamb.), white spruce (Picea glauca (Moench.) Voss), and aspen (Populus tremuloides Michx., P. grandidentata Michx.) on a very fine sandy loam soil in north-central Minnesota. Total tree biomass was greatest for red pine followed by by aspen, spruce, and jack pine. Nutrient weights (N, P, K, Ca, Mg) in the trees were greatest in aspen followed generally by spruce, red pine, and jack pine. Particularly large proportions of biomass and nutrients were found in aspen bark and …

Changes In Aspen Parkland Habitats Bordering Alberta Sloughs, G. Merriam

Aspen Bibliography

No abstract provided.

Spatial Pattern And Population Dynamics Of Populus-Tremuloides In A Saskatchewan Canada Aspen Grove, O.W. Archibold, M.R. Wilson

Aspen Bibliography

The spatial pattern of nine 5-yr age-classes of trees in a grove of Trembling Aspen (Populus tremuloides) was studied by applying nearest-neighbor analysis to a transect.

The Effect Of Browsing By Cattle And Sheep On Trees And Bushes, J. Buttenschon, R.M. Buttenschon

Aspen Bibliography

No abstract provided.

Litter Fall And Chemical Cycling In An Aspen (Populus Tremuloides) Woodland Ecosystem In The Canadian Rockies, J.B. Cragg, A. Carter, C. Leischner, E.B. Peterson, G.N. Sykes

Aspen Bibliography

No abstract provided.

Indicator Value Of Plants In Jack Pine Stands, Henry L. Hansen

Journal of the Minnesota Academy of Science

No abstract provided.