Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 5 of 5
Full-Text Articles in Forest Sciences
Minnesota Forest Resources In 2000, David E. Haugen, Manfred E. Mielke
Minnesota Forest Resources In 2000, David E. Haugen, Manfred E. Mielke
Aspen Bibliography
No abstract provided.
Site Index Conversion Equations For Mixed Trembling Aspen And White Spruce Stands In Northern British Columbia, Gordon Nigh
Site Index Conversion Equations For Mixed Trembling Aspen And White Spruce Stands In Northern British Columbia, Gordon Nigh
Aspen Bibliography
White spruce and trembling aspen are two important commercial species in British Columbia. They often grow in association, particularly in the Boreal White and Black Spruce and Sub-Boreal Spruce biogeoclimatic zones. Site index conversion equations are useful for estimating the site index of one species from the site index of another species. This study fills a need for site index conversion equations for mixed spruce/aspen stands. Seventy 0.01 ha study plots were established in mixed spruce/aspen stands. One site tree of each species was selected from each plot. The height and breast height ages of the site trees were measured …
Heartrot Fungi's Role In Creating Picid Nesting Sites In Living Aspen, J.H. Hart, D.L. Hart
Heartrot Fungi's Role In Creating Picid Nesting Sites In Living Aspen, J.H. Hart, D.L. Hart
Aspen Bibliography
To determine the number of cavity-containing aspens in old-growth (>80 years), we counted the number of stems containing cavities in 132 0.02-ha plots in Wyoming. There were 8.7 cavities/ha of aspen type. At least 84% of the cavity stems were alive when the initial cavity was constructed; 60% were alive when examined. Fruiting bodies and Phellinus tremulae (a heartrot fungus) were present on 71% of all cavity-bearing stems but on only 9.6% of all stems >15 cm d.b.h. Cavities were present in 7.7% and 0.2% of living stems with and without fruiting bodies, respectively. Average d.b.h. of cavity stems …
Landscape Dynamics Of Aspen And Conifer Forests, D.L. Bartos
Landscape Dynamics Of Aspen And Conifer Forests, D.L. Bartos
Aspen Bibliography
No abstract provided.
Aspen Ecosystems: Objectives For Sustaining Biodiversity, R.B. Campbell, D.L. Bartos
Aspen Ecosystems: Objectives For Sustaining Biodiversity, R.B. Campbell, D.L. Bartos
Aspen Bibliography
Recognizing the historical abundance of major vegetation cover types is the foundation for estimating the magnitude and significance of conversion from one cover type to another and the proportion of existing cover types that are in properly functioning condition. Techniques to determine desired conditions are discussed. Existing situations for the need to treat ecosystems where aspen (Populus tremuloides Michx.) occur are prioritized: highest—mixed-conifer with aspen but where conifers comprise greater than 50% of the canopy; high—aspen/sagebrush transition; and moderate—aspen dominated landscapes. Though aspen stands are evaluated, aspen landscapes are discussed in the context of aggregations of many stands. Within …