Index Catalog // Hyrax

Underplanting and competition in thinned Douglas-fir

O Criador:: Brandeis, Thomas James
Abstract:: Understory conifer regeneration needs to occur beneath conifer-dominated canopies if two-storied or uneven-aged structures are to be considered for western Oregon Coast Range stand management. To ensure adequate numbers of seedlings to meet stocking or habitat structure objectives, planting may be a solution. We undertook a multi-level study to determine...
Resource Type:: Dissertation

Hierarchical analysis of spatial pattern and processes of Douglas-fir forests using wavelet analysis

O Criador:: Bradshaw, G. A.
Abstract:: There has been an increased interest in the quantification of pattern in ecological systems over the past years. This interest is motivated by the desire to construct valid models which extend across many scales. Spatial methods must quantify pattern, discriminate types of pattern, and relate hierarchical phenomena across scales. Wavelet...
Resource Type:: Dissertation

Physiological control of fine root turnover in Douglas-fir

O Criador:: Marshall, John D. (John David), 1956-
Abstract:: To determine whether shading increases drought-induced root mortality by changing the chemical composition of roots, I conducted an experiment in which high and low light treatments in combination with high and low soil moisture treatments were applied to seedlings of Douglas-fir (Pseudotsuqa menziesii Mirb. Franco). Because synthesis of suberin (a...
Resource Type:: Dissertation

Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn

O Criador:: Margolis, Hank A.
Abstract:: Douglas-fir (Pseudotsuga menziesii Mirb. Franco) seedlings at a nursery in western Oregon were fertilized with nitrogen in October. Free amino acid (FAA) and total nitrogen concentrations in needles, stems and fine roots were followed from before fertilization until just prior to budbreak the following spring. Before budbreak in mid-March, the...
Resource Type:: Dissertation

Genetic variation of wood density components in coastal Douglas- fir and their relationships to growth rhythm

O Criador:: Vargas-Hernandez, Jesus
Abstract:: Overall wood density is a complex trait resulting from the interaction of three components: average earlywood density, average latewood density, and latewood proportion. In order to better understand the genetic control of wood density in juvenile Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), and to assess the utility of information on its...
Resource Type:: Dissertation

Distribution of light within the crown of an open-grown Douglas-fir

O Criador:: Ungs, M. J. (Michael J.)
Abstract:: A systematic investigation was made of the distribution of short wave radiation within the crown of an open-grown Douglas-fir tree. The study tree was 23 years old, 14 meters tall and had a maximum crown diameter of about ten meters. Global radiation was measured every 15 cm along eight different...
Resource Type:: Dissertation

Genecology of Douglas-fir from southwestern Oregon

O Criador:: White, Timothy L., 1951-
Abstract:: This thesis is divided into three chapters. For all chapters, the experiments described deal with the responses of all or a subset of 72 wind-pollinated Douglas-fir families from 36 different locations in southwestern Oregon. Wind-pollinated seed was collected from each of two trees at each of the 36 locations. The...
Resource Type:: Dissertation

Variation in the foliar nutrient status of several Douglas-fir provenances

O Criador:: Stevens, Roderick D.
Abstract:: From a preliminary 1969 foliar analysis, eight provenances were chosen from the sixteen included in a region-wide, reciprocal Doulgas-fir provenance study for further study of variation in foliar nutrition. In the fall of 1969 separate foliar samples were collected from ten trees per provenance at each of ten plantations ranging...
Resource Type:: Dissertation

Growth and development of young Douglas-fir in relation to intra- and inter-specific competition

O Criador:: Zedaker, Sheperd M.
Abstract:: This thesis explored the relationships between the growth of Douglas-fir seedlings and light and moisture resource availability as influenced by competitor type and density in the Oregon Coast Range. Twelve 360 m2 Nelder plots, encompassing a range of 300 to 15,000 cm2 per plant in 48 spokes, were established in...
Resource Type:: Dissertation

Effect of auxins, cytokinins and nutrition on adventitious bud formation in tissues of Douglas-fir grown in culture

O Criador:: Thompson, David George
Abstract:: Vegetative propagation is most effective when individuals of demonstrated superior characteristic can be propagated. For this reason, a method for the induction of adventitious buds on cultured Douglas-fir shoot tips from 20-25 year old trees was developed. Douglas-fir shoot tips failed to survive and grow on a full strength Murashige...
Resource Type:: Dissertation

Hyrax

Underplanting and competition in thinned Douglas-fir

Hierarchical analysis of spatial pattern and processes of Douglas-fir forests using wavelet analysis

Physiological control of fine root turnover in Douglas-fir

Carbon and nitrogen allocation patterns of 2-0 Douglas-fir seedlings following nitrogen fertilization in the autumn

Genetic variation of wood density components in coastal Douglas- fir and their relationships to growth rhythm

Distribution of light within the crown of an open-grown Douglas-fir

Genecology of Douglas-fir from southwestern Oregon

Variation in the foliar nutrient status of several Douglas-fir provenances

Growth and development of young Douglas-fir in relation to intra- and inter-specific competition

Effect of auxins, cytokinins and nutrition on adventitious bud formation in tissues of Douglas-fir grown in culture

Filtre sua busca

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

Language

Non-Academic Affiliation

Peer Reviewed

Tipo de recurso

Rights Statement

Sujeito

Busca

Resultados da Busca

Filtre sua busca