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Articles 1 - 11 of 11

Full-Text Articles in Life Sciences

Steens Mountain Aspen Assessment And Monitoring Final Report: Submitted To Bureau Of Land Management, Burns District Office And Steens-Alvord Coalition, Nick Otting, Danna Lytjen Dec 2003

Steens Mountain Aspen Assessment And Monitoring Final Report: Submitted To Bureau Of Land Management, Burns District Office And Steens-Alvord Coalition, Nick Otting, Danna Lytjen

Aspen Bibliography

No abstract provided.


A National Early Detection And Rapid Response System For Invasive Plants In The United States, Conceptual Design, Federal Interagency Committee For The Management Of Noxious And Exotic Weeds Sep 2003

A National Early Detection And Rapid Response System For Invasive Plants In The United States, Conceptual Design, Federal Interagency Committee For The Management Of Noxious And Exotic Weeds

All U.S. Government Documents (Utah Regional Depository)

No abstract provided.


Some Environmental Relationships Of Undergrowth Species In Aspen Communities Of The Intermountain West, W F. Mueggler Jun 2003

Some Environmental Relationships Of Undergrowth Species In Aspen Communities Of The Intermountain West, W F. Mueggler

Aspen Bibliography

This analysis results from an opportunity to explore plant-environmental relationships from data collected for a different purpose. Origin of the data is a study designed to develop an aspen community-type classification for southern Idaho, western Wyoming, Utah, and Nevada which resulted in the publication "Aspen Community Types of the Intermountain Region" GTR INT-250 by W.F. Mueggler (1988).


Species Pairwise Associations Over Nine Years Of Secondary Succession: Assessing Alternative Explanations And Successional Mechanisms, Lara R. Rozzell May 2003

Species Pairwise Associations Over Nine Years Of Secondary Succession: Assessing Alternative Explanations And Successional Mechanisms, Lara R. Rozzell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The importance and mechanisms of species interactions are undetermined in most successional systems. I used correlations and null modeling to detect pairwise species associations between 33 plant species in the first nine years of secondary succession after logging and burning in a western Oregon Cascade forest. I tested for correlations between each species and soil nutrients, nonvegetative ground cover, and surrounding vegetation. More positive than negative associations were found at all sampling times. The proportion of positive associations decreased and negative associations increased through time. Up to 42% of associations at a sampling time were explicable by shared positive correlations …


Catastrophic Wildfire Hazard Assessment In Pinyon-Juniper Woodlands Utilizing A Managerial Paradigm, Benjamin D. Baldwin May 2003

Catastrophic Wildfire Hazard Assessment In Pinyon-Juniper Woodlands Utilizing A Managerial Paradigm, Benjamin D. Baldwin

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The impetus for this research was the increasing threat of catastrophic wildfires resulting from the accumulation of fuels across the West. Guided by the priorities, goals, and guiding principles outlined by the national fire plan (NFP), the objective was to identify those areas within a pinyon-juniper woodland-dominated landscape with the highest hazard of catastrophic wildfire. The intent was to help managers prioritize proactive fuels management efforts outside of the wildland urban interface (WUI). Based on a management paradigm, constraints were placed on the data collection, analysis, and model development. A geographic information system (GIS) was used to create a hazard …


Restoration Of Aspen In Different Stages Of Mortality In Southern Utah, Seth Ray Ohms May 2003

Restoration Of Aspen In Different Stages Of Mortality In Southern Utah, Seth Ray Ohms

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Aspen clones of an aspen-dominated community in Southwestern Utah are declining, some having experienced high mortality coupled with in sufficient regeneration. The objectives of this study were to (I) determine if decadent, non-regenerating mature aspen stands could be regenerated through disturbance of the 111 auxin/cytokinin hormone relationship by clearcutting; (2) determine the extent of ungulate use of regenerating aspen ramets. Clearcuts were made in late summer of 2001 in 10 different clones that exhibited various levels of decline on a continuum from relatively healthy to extremely deteriorated. Nested wildlife/livestock exclosures were constructed in each clearcut plot, as well as in …


Models For The Distribution Of Quaking Aspen In Geographic And Potential Evapotranspiration Spaces Relevant To The Book Cliffs (Utah), 2000-2002, Joseph O. Sexton Jan 2003

Models For The Distribution Of Quaking Aspen In Geographic And Potential Evapotranspiration Spaces Relevant To The Book Cliffs (Utah), 2000-2002, Joseph O. Sexton

Aspen Bibliography

Quaking aspen is the most widely distributed tree species in North America and an asset to sociological, ecological, and hydrological land values in the western United States. In recognition of these values, land managers seek means to oppose a regional decline of aspen in the Intermountain West—a decline apparently in progress since the close of the Pleistocene and driven by climate change, fire suppression, and increasing ungulate densities. One location of special relevance to this decline is the Utah-Colorado Book Cliffs, a discrete boundary of quaking aspen’s geographic range and a potential biogeographic corridor between the sub-alpine communities of the …


Aspen Management Guidelines For Blm Lands In North-Central Nevada, Charles E. Kay Jan 2003

Aspen Management Guidelines For Blm Lands In North-Central Nevada, Charles E. Kay

Aspen Bibliography

No abstract provided.


Utah Forest Health Report : A Baseline Assessment 1999 - 2001, Colleen Keyes, Paul Rogers, Leon Lamadeleine, Vick Applegate, Dave Atkins Jan 2003

Utah Forest Health Report : A Baseline Assessment 1999 - 2001, Colleen Keyes, Paul Rogers, Leon Lamadeleine, Vick Applegate, Dave Atkins

The Bark Beetles, Fuels, and Fire Bibliography

This report addresses forest health in two ways: by discussion of forest-related issues and by data summaries in several appendices. FHM is a long-term monitoring program and therefore, the data presented in this report must be viewed in that light. This report presents a first-time, or baseline summary. Subsequent reports will address changes over time as plots and other detection surveys are conducted and re-measured.


Good Intentions May Doom Aspen Groves, James R. Fazio Jan 2003

Good Intentions May Doom Aspen Groves, James R. Fazio

Aspen Bibliography

If there were a Guiness Book of World Records for trees, quaking aspen would be in it - not once but probably several times.


Aspen Delineation Project 2003 Summary Report, David Burton Jan 2003

Aspen Delineation Project 2003 Summary Report, David Burton

Aspen Bibliography

The 2003 report summarizes the second year of the Aspen Delineation Project (ADP) as a project cosponsored by the Forest Service, Pacific Southwest Region; California State Office, Bureau of Land Management; and California Department of Fish and Game. David Burton, the Principal Investigator of the Aspen Delineation Project, works under the direction of Hugh Safford (FS), Ed Lorentzen (BLM), and Eric Loft (CDFG).