Index Catalog // ScholarsArchive@OSU

Life-history and physiological trade-offs to reproduction of invasive and noninvasive Rubus

Creator:: McDowell, Susan C.
Abstract:: The goal of this dissertation was to improve our understanding of the physiology and life-history of invasive plants and of the mechanisms underlying life-history trade-offs. I compared invasive and noninvasive species of Rubus (blackberry) that grow together in the Pacific Northwest. Three hypotheses were investigated: (1) Invasive Rubus have higher...
Resource Type:: Dissertation
Full Text:: and Physiological Trade-offs to Reproduction of Invasive and Noninvasive Rubus /2 Abstract Steven R

Photocontrol of seed germination in arable land

Creator:: Scopel, Ana L.
Resource Type:: Dissertation
Full Text:: reviewed drafts of the manuscripts. Steven R. Radosevich advised me on several steps along the

Photomorphogenic processes in the agricultural environment

Creator:: Ballaré, Carlos L.
Resource Type:: Dissertation
Full Text:: Abstract approved: Steven R. Radosevich I review recent advances in photomorphogenic research and use

Effect of density, proportion, and spatial arrangement on the competition of winter wheat and Italian ryegrass (Lolium multiflorum Lam)

Creator:: Hashem, Abul, 1956-
Resource Type:: Dissertation
Full Text:: Wheat and Italian Ryegrass (Lolium multiflorum Lam). Abstract Redacted for Privacy approved: Steven R

Individual and population responses to abiotic stresses in Italian ryegrass (Lolium multiflorum Lam.)

Creator:: Martinez-Ghersa, Maria Alejandra
Abstract:: Plant form is a compromise between resource gathering, reproduction and the tolerance to physical demands of the abiotic and biotic environment. In an agricultural field in addition to the natural factors causing stress, humans also introduce physical and mechanical stresses, and chemical pesticides into the environment. Many of these factors...
Resource Type:: Dissertation
Full Text:: .) Abstract appr Steven R. Radosevic Plant form is a compromise between resource gathering, reproduction and

Models of a four-species annual weed community : growth, competition, and community dynamics

Creator:: Roush, Mary Lynn
Abstract:: Models of weed communities aid in the development of weed management strategies and elucidate the processes and mechanisms that regulate plant populations and communities. A conceptual weed community model was developed to organize key regulatory life-history processes. Specific investigations focused on the processes of plant growth and competition, and relationships...
Resource Type:: Dissertation
Full Text:: :_ Steven R. Radosevich Models of weed communities aid in the development of weed management strategies

The population dynamics and growth of salmonberry (Rubus spectabilis) and thimbleberry (Rubus parviflorus)

Creator:: Maxwell, Bruce D.
Abstract:: Salmonberry (Rubus spectabilis) and thimbleberry (Rubus parviflorus) are clonal shrub species common to reforestation sites in the Oregon Coast Range. These species have economic importance, because they reduce conifer seedling growth and survival. A population modeling approach was used to facilitate study of the biology of these species and to...
Resource Type:: Dissertation
Full Text:: approved: Redacted for Privacy /' Steven R. Radosevich Salmonberry (Rubus spectabilis) and thimbleberry

Interspecific competition in young Douglas-fir plantations of the Oregon coast range

Creator:: Wagner, Robert Gordon
Abstract:: Improving vegetation management decisions in Pacific Northwest forests requires a better understanding of the interactions between planted conifers and associated vegetation. A practical index of interspecific competition, and quantitative models predicting conifer performance from such an index are particularly needed. To meet this need, neighborhood models of interspecific competition were...
Resource Type:: Dissertation

Competitive interactions between Douglas-fir and red alder seedlings : growth analysis, resource use, and physiology

Creator:: Shainsky, Lauri J.
Abstract:: Competitive interactions between Douglas-fir seedlings (Pseudotsuga menziesii), and seedlings of a nitrogen-fixing hardwood associate, red alder (Alnus rubra), were investigated in an addition series experiment. The primary objective of the research was to identify and quantify key processes underlying intra- and interspecific competitive interactions of Douglas-fir and red alder seedlings....
Resource Type:: Dissertation

Population dynamics of three early seral herb species in Pacific Northwest forests

Creator:: Hanson, D. Eric
Abstract:: I investigated the population dynamics of fireweed (Epilobium angustfolium), foxglove (Digitalis purpurea) , and woodland groundsel (Senecio sylvaticus) to understand their colonization, persistence, and extirpation in Pacific Northwest Douglas-fir forests. Factors affecting the species' frequency and abundance in forest communities were evaluated. Their population dynamics were modeled and field experiments...
Resource Type:: Dissertation

ScholarsArchive@OSU

Life-history and physiological trade-offs to reproduction of invasive and noninvasive Rubus

Photocontrol of seed germination in arable land

Photomorphogenic processes in the agricultural environment

Effect of density, proportion, and spatial arrangement on the competition of winter wheat and Italian ryegrass (Lolium multiflorum Lam)

Individual and population responses to abiotic stresses in Italian ryegrass (Lolium multiflorum Lam.)

Models of a four-species annual weed community : growth, competition, and community dynamics

The population dynamics and growth of salmonberry (Rubus spectabilis) and thimbleberry (Rubus parviflorus)

Interspecific competition in young Douglas-fir plantations of the Oregon coast range

Competitive interactions between Douglas-fir and red alder seedlings : growth analysis, resource use, and physiology

Population dynamics of three early seral herb species in Pacific Northwest forests

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