Index Catalog // ScholarsArchive@OSU

The effects of forest fuel reduction on fire severity and long-term carbon storage

Creator:: Mitchell, Stephen Richard
Abstract:: Two forest management objectives being debated in the context of federally managed landscapes in the US Pacific Northwest involve a perceived trade-off between fire restoration and C sequestration. The former strategy would reduce fuel (and therefore C) that has accumulated through a century of fire suppression and exclusion that has...
Resource Type:: Dissertation
Full Text:: Mitchell for the degree of Doctor of Philosophy in Forest Science presented on March 5, 2009. Title

Nutritional value of several Opuntia species

Creator:: Ben-Thlija, Abdellaziz
Abstract:: Little is known about cactus nutrients, their proportions in different species and the variability of these proportions with season. In the scant literature available on Opuntia species, no systematic survey has been published to document and compare the nutritional qualities of different species. Also, no studies have been done to...
Resource Type:: Masters Thesis
Full Text:: : Redacted for Privacy Williap/C. Krieger Little is known about cactus nutrients, their proportions in

Restructuring of land and community in the remote rural west : the case of Wallowa County, Oregon

Creator:: Abrams, Jesse
Abstract:: Since at least the 1970s, rural areas in the western United States, as elsewhere across the country and world, have been subject to social, economic, and political forces that have resulted in novel demographic and land tenure trends when compared to previous decades. Collectively, these processes of restructuring have created...
Resource Type:: Dissertation
Full Text:: : ___________________________________________________________________ John C. Bliss Since at least the 1970s, rural areas in the western United States, as

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

Creator:: Schantz, Merilynn C.
Abstract:: Biological plant invasions are diminishing the ecological integrity and function of ecosystems worldwide. A primary example of this is in the Great Basin of the United States, where invasive annual grasses, like cheatgrass (Bromus tectorum L.) and medusahead (Taeniatherum caput-medusae L. Nevski), are dominating many sagebrush-steppe ecosystems. In these invaded...
Resource Type:: Dissertation
Full Text:: , A. Jolles, and C. E. Mitchell 2009. Direct and indirect effects of viral pathogens and the

New perspectives on evolutionary relationships within Pinus (Pinaceae) and within subsection Ponderosae (subgenus Pinus)

Creator:: Willyard, Ann Nachreiner
Abstract:: A fossil-calibrated phylogenetic framework based on exemplars from each of the four taxonomic sections within Pinus was created using multiple nuclear and chloroplast loci. Calibration at the well-defined subgeneric split within Pinus with either fossil leaves and cones (ca. 45 million years ago) or fossil wood (ca. 85 million years...
Resource Type:: Dissertation
Full Text:: Richard C. Cronn A fossil-calibrated phylogenetic framework based on exemplars from each of the

Quaking aspen persistence in three Oregon landscapes

Creator:: Seager, S. Trent
Abstract:: Quaking aspen (Populus tremuloides) is an important tree species in the western United States and there has been much concern about its persistence. In this thesis, I report on aspen in a portion of its range that has not been previously evaluated: the eastern and western slopes of the Central...
Resource Type:: Masters Thesis
Full Text:: the mid 1980s and continued into the 1990s (Mitchell and Preisler, 1998; Williams and Liebhold, 2002

Spatial patterns of tree effects on pasture production in open canopied agroforests

Creator:: Harris, Norman Rex
Resource Type:: Masters Thesis
Full Text:: C. 76 TABLE OF CONTENTS (Continued) Page CONCLUSIONS 78 REFERENCES 81 CHAPTER 4

Strategies for machine harvesting of mature coffee (Coffea arabica L.) fruits

Creator:: Tongumpai, Peeradet
Abstract:: Greenhouse and field grown coffee plants were used to study the synchronization of flowering and fruiting. The purpose of these studies was to develop methods of improving the selective harvesting of mature coffee fruits by machine. The studies were divided into 4 parts: 1) Synchronization of flowering, 2) Synchronization of...
Resource Type:: Dissertation
Full Text:: Ripe Coffee Fruits 162 C. Effect of NAA on Fruit Removal Force of Coffee 164 D. Effect of Shoot

Greater sage-grouse reproductive ecology : linkages among habitat resources, maternal nutrition, and chick survival

Creator:: Gregg, Michael A.
Abstract:: Greater sage-grouse (Centrocercus urophasianus) populations declined range wide during the past 50 years. Grouse populations were 2-3 times larger than the current population as recently as the early 1970's. In addition to habitat loss and fragmentation, declines were attributed habitat degradation that caused reduced productivity. Because chick survival remains the...
Resource Type:: Dissertation
Full Text:: 190 DISCUSSION 191 ACKNOWLEDGMENTS 196 LITERATURE CITED 196 APPENDIX C: SENSITIVITY ANALYSIS FOR

Directing ecological succession : the role of competition in restoring semi-arid grasslands dominated by invasive plants

Creator:: Mangla, Seema
Abstract:: Successful ecosystem restoration requires an understanding of the ecological processes directing succession. One of the challenges in the semi-arid grasslands of western United States is replacement of native species by invasive annual grasses. Solutions to this problem require identifying and manipulating ecological processes that direct succession to favor desired vegetation....
Resource Type:: Dissertation
Full Text:: ., Campbell, C., Affeldt, R., 2006. Control of Medusahead and Cheatgrass in. Central Oregon Rangelands Using

ScholarsArchive@OSU

The effects of forest fuel reduction on fire severity and long-term carbon storage

Nutritional value of several Opuntia species

Restructuring of land and community in the remote rural west : the case of Wallowa County, Oregon

Role of propagule pressure and priority effects on plant establishment during restoration of invaded shrub-steppe

New perspectives on evolutionary relationships within Pinus (Pinaceae) and within subsection Ponderosae (subgenus Pinus)

Quaking aspen persistence in three Oregon landscapes

Spatial patterns of tree effects on pasture production in open canopied agroforests

Strategies for machine harvesting of mature coffee (Coffea arabica L.) fruits

Greater sage-grouse reproductive ecology : linkages among habitat resources, maternal nutrition, and chick survival

Directing ecological succession : the role of competition in restoring semi-arid grasslands dominated by invasive plants

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