Index Catalog // ScholarsArchive@OSU

The effects of density and proportion on spring wheat and Lolium multiflorum Lam

Creator:: Concannon, Julie Ann
Abstract:: This thesis consists of four chapters. Literature is reviewed in Chapter 1. Chapter 2 describes an addition series experiment to determine the influence of species density and proportion on vegetative and reproductive yield of spring wheat and Lolium multiflorum. Chapter 3 consists of a growth analysis experiment to determine whether...
Resource Type:: Masters Thesis
Full Text:: WHEAT AND LOLIUM MULTIFLORUM LAM. Abstract approved: Redacted for Privacy Steven R. Radosevich This

The role of density and proportion in allometric equations of Douglas-fir and red alder seedlings

Creator:: Cooke, Pamela T.
Abstract:: Allometric equations are useful tools for predicting tree biomass when direct measurements are impractical. Any factor affecting plant growth can be a significant variable in allometric equations. Density and species proportion are spatial variables that influence tree growth and should be considered when developing allometric equations. This consideration is especially...
Resource Type:: Masters Thesis

Competition among lodgepole pine seedlings and plant species in a Sitka-alder dominated shrub community in the southern interior of British Columbia

Creator:: Simard, Suzanne W.
Abstract:: Sitka alder (Alnus sinuata (Regel) Rydb.) dominates many lodgepole pine (Pinus contorta ssp. latifolia Dougl.) sites following clearcutting in the Montane Spruce zone of the southern interior of British Columbia. The objectives of this study were to examine the effects of the sitka alder-dominated shrub community on the performance of...
Resource Type:: Masters Thesis

Database development and application to characterize juvenile Douglas-fir (Pseudotsuga menziesii [Mirb] and understory vegetation in the Oregon and Washington Coast Range Mountains

Creator:: Shula, Robert G.
Abstract:: The Regional Vegetation Management Model (RVMM) predicts the effects of associated vegetation on the growth and yield of young Douglas-fir (age [less than or equal to] 20 years) in the Pacific Northwest, and is a 'front-end' growth model for existing rotation-age growth models. Objectives of this thesis are to: (a)...
Resource Type:: Masters Thesis

Agroforestry farming in American Samoa : a classification and assessment

Creator:: Tuitele-Lewis, Jeannette D.
Abstract:: Agroforestry is a traditional farming practice in American Samoa that has helped to sustain the livelihood of the native population for centuries. These once self-sufficient islands have become economically dependent on U.S monies and other external resources during the past century. Dependency has caused a shift in the carrying capacity...
Resource Type:: Masters Thesis
Full Text:: redacted for privacy. Steven R. Radosevich Agroforestry is a traditional farming practice in American

The biology and ecology of Potentilla recta in the Blue Mountains of northeastern Oregon

Creator:: Tuitele-Lewis, Jamison
Abstract:: Two experiments were conducted on the invasive plant species Potentilla recta in northeastern Oregon to investigate both biological and ecological characteristics of the species. Growth analysis was conducted on the plant at three sites over a period of two years (2002 and 2003). Relative growth rate (RGR) was calculated for...
Resource Type:: Masters Thesis
Full Text:: / / -,ignature redacted for privacy. 7 Steven R. Radosevich Two experiments were conducted on the invasive

Natural regeneration of Douglas-fir in uneven-aged stands in southwest Oregon

Creator:: Gerstein, Jared M.
Abstract:: The response to various levels of stand density by natural Douglas-fir regeneration, shrub and sprouting hardwood species was studied in the mixed-evergreen-forests of southwest Oregon. Partial-cut old growth (harvested 22-31 years prior) and thinned evenaged (harvested 9-17 years prior) stand types were used as surrogates for intentionally managed uneven-aged stand...
Resource Type:: Masters Thesis

Big huckleberry (Vaccinium membranaceum Dougl.) ecology and forest succession, Mt. Hood National Forest and Warm Springs Indian Reservation, Oregon

Creator:: Anzinger, Dawn
Abstract:: This thesis is an observational study that examines relationships between disturbance, forest stand development, and big huckleberry (Vaccinium membranaceum) fruit productivity and growth by combining ecological methods with the traditional ecological knowledge of Warm Springs ceremonial huckleberry pickers. Shrub fields of fruiting big huckleberry develop in early seral subalpine environments...
Resource Type:: Masters Thesis

Crop rotation effects on the seed bank and population dynamics of annual bluegrass (Poa annua)

Creator:: Sardar, Farid M.
Abstract:: Field studies were conducted to evaluate the effect of crop rotation on annual bluegrass plant population dynamics, seed rain, and seed bank in 1996 and 1997 at two sites. Growth-chamber studies were conducted to determine the influence of the mother plant environment on annual bluegrass germination. The change in population,...
Resource Type:: Masters Thesis
Full Text:: . Carol A. Mallory-Smith and Dr. Steven R. Radosevich for their continuous encouragement, inspiration

Spatial pattern and dynamics of hardwood patches in the Coast Range of Oregon, 1939-1993

Creator:: Hess, Rebecca Susan
Abstract:: Analysis of the long-term spatial pattern and dynamics of hardwood patches in the Coast Range of Oregon provides numerous ecological insights. Natural and anthropogenic disturbances have contributed to the development of a patchy mosaic of vegetation types in the area. Some hardwood patches in the Coast Range may be the...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

The effects of density and proportion on spring wheat and Lolium multiflorum Lam

The role of density and proportion in allometric equations of Douglas-fir and red alder seedlings

Competition among lodgepole pine seedlings and plant species in a Sitka-alder dominated shrub community in the southern interior of British Columbia

Database development and application to characterize juvenile Douglas-fir (Pseudotsuga menziesii [Mirb] and understory vegetation in the Oregon and Washington Coast Range Mountains

Agroforestry farming in American Samoa : a classification and assessment

The biology and ecology of Potentilla recta in the Blue Mountains of northeastern Oregon

Natural regeneration of Douglas-fir in uneven-aged stands in southwest Oregon

Big huckleberry (Vaccinium membranaceum Dougl.) ecology and forest succession, Mt. Hood National Forest and Warm Springs Indian Reservation, Oregon

Crop rotation effects on the seed bank and population dynamics of annual bluegrass (Poa annua)

Spatial pattern and dynamics of hardwood patches in the Coast Range of Oregon, 1939-1993

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