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2009

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Articles 211 - 218 of 218

Full-Text Articles in Forest Sciences

Aspen Succession And Nitrogen Loading: A Case For Epiphytic Lichens As Bioindicators In The Rocky Mountains, Usa, Paul C. Rogers, Kori D. Moore, Ronald J. Ryel Jan 2009

Aspen Succession And Nitrogen Loading: A Case For Epiphytic Lichens As Bioindicators In The Rocky Mountains, Usa, Paul C. Rogers, Kori D. Moore, Ronald J. Ryel

Wildland Resources Faculty Publications

Question: Can lichen communities be used to assess shortand long-term factors affecting seral quaking aspen (Populus tremuloides) communities at the landscape scale? Location: Bear River Range, within the Rocky Mountains, in northern Utah and southern Idaho, USA. Method: Forty-seven randomly selected mid-elevation aspen stands were sampled for lichens and stand conditions. Plots were characterized according to tree species cover, basal area, stand age, bole scarring, tree damage, and presence of lichen species. We also recorded ammonia emissions with passive sensors at 25 urban and agricultural sites throughout an adjacent populated valley upwind of the forest stands. Nonmetric multidimensional scaling (NMS) …

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The Dandy Scroll, Winter 2009, University Of Maine Pulp And Paper Foundation Jan 2009

The Dandy Scroll, Winter 2009, University Of Maine Pulp And Paper Foundation

General University of Maine Publications

The Winter 2009 issue of The Dandy Scroll newsletter produced by the University of Maine Pulp and Paper Foundation.

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Aspen Regeneration On Log Decking Areas As Influenced By Season And Duration Of Log Storage, Kevin N. Renkema, Victor J. Lieffers, Simon M. Landhausser Jan 2009

Aspen Regeneration On Log Decking Areas As Influenced By Season And Duration Of Log Storage, Kevin N. Renkema, Victor J. Lieffers, Simon M. Landhausser

Aspen Bibliography

This study assessed aspen regeneration on decking areas as affected by season of log deck building and duration of log storage; as well as root wounding, soil com- paction, and slash depth. On former decking areas that were built after a summer harvest, aspen regeneration was 50% lower and root death 35% greater compared to former decking areas of a fall harvest. Duration of log storage after a fall harvest had little effect on aspen regeneration; short (1.5–3 months) or long (11 months) storage resulted in similar regeneration. Slash load was greatly increased on decking areas while root wounding and …

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Assessing Aspen Using Remote Sensing, Randy Hamilton, Kevin Megown, Jeff Dibenedetto, Dale Bartos, Anne Mikeck Jan 2009

Assessing Aspen Using Remote Sensing, Randy Hamilton, Kevin Megown, Jeff Dibenedetto, Dale Bartos, Anne Mikeck

Aspen Bibliography

Large areas of aspen (Populus tremuloides) have disappeared and continue to disappear from western forests due to successional decline and sudden aspen decline (SAD). This loss of aspen ecosystems negatively impacts watersheds, wildlife, plants, and recreation. Much can still be done to restore aspen if timely and appropriate action is taken. However, land managers often lack fundamental information on the location, quantity, and status of aspen stands. This information is needed to plan, implement, and defend aspen restoration activities, but it is often difficult and costly to obtain. Advances in remote sensing technologies can provide cost-effective ways to obtain spatial …

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2009 Report : A Multi-Refuge Program To Evaluate The Effect Of Ungulate Browsing On Habitat, Richard B. Keigley, Jeffrey Warren, Wayne J. King Jan 2009

2009 Report : A Multi-Refuge Program To Evaluate The Effect Of Ungulate Browsing On Habitat, Richard B. Keigley, Jeffrey Warren, Wayne J. King

Aspen Bibliography

No abstract provided.

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An Aspen Success Story : 2009 Aspen Monitoring Report, James L. Robertson Jan 2009

An Aspen Success Story : 2009 Aspen Monitoring Report, James L. Robertson

Aspen Bibliography

No abstract provided.

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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 Jan 2009

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 …

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Regeneration Of Aspen Following Partial And Strip Understory Protection Harvest In Boreal Mixedwood Forests, Alison D. Lennie, Simon M. Landsausser, Victor J. Lieffers, Derek Sidders Jan 2009

Regeneration Of Aspen Following Partial And Strip Understory Protection Harvest In Boreal Mixedwood Forests, Alison D. Lennie, Simon M. Landsausser, Victor J. Lieffers, Derek Sidders

Aspen Bibliography

Trembling aspen regeneration was studied in 2 types of partial harvest systems designed to harvest mature aspen but pro- tect immature spruce and encourage natural aspen regeneration. Two partial harvest systems, where the residual aspen was either left in strips or was dispersed uniformly, were compared to traditional clearcuts. After the first and second year since harvest, aspen sucker density and growth was similar between the 2 partial harvests, but was much lower than in the clearcuts. However, in the partial cuts the regeneration density was very much dependent on the location relative to residual trees. The density of regeneration …

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