Index Catalog // ScholarsArchive@OSU

Development of tree height and diameter growth equations for mid-Willamette Valley Douglas-fir

Creator:: Ritchie, Martin W.
Abstract:: Equations for predicting height growth, basal area growth and diameter inside bark are presented for Douglas-fir. Basal area growth equations for grand fir are also presented. The growth models were developed for use in an individual tree/distance independent growth simulator. Various model forms and measures of competitive stress were compared...
Resource Type:: Masters Thesis

Disaggregative and individual-tree growth models in theory and application

Creator:: Ritchie, Martin W.
Abstract:: Disaggregative and individual-tree/distance-independent modeling methods are compared and contrasted. Differences between the two are related to differences in functional and apparent resolution and may be illustrated using aggregation theory. When considering models of different levels of resolution describing a given phenomenon, invariance with respect to the aggregation implied (symmetry) may...
Resource Type:: Dissertation

Umpqua cavalcade : Douglas County Centennial, August 30, 31 and September 1

Creator:: Roseburg (Or.). Douglas County Centennial
Abstract:: Gerald W. Williams Collection
Resource Type:: Book

Evaluation of individual-tree and disaggregative prediction methods for Douglas-fir stands in western Oregon

Creator:: Ritchie, Martin W. and Hann, David W.
Abstract:: The efficiency of six disaggregative methods and two individual-tree methods was evaluated in terms of their ability to predict 5-year basal area increment for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in western Oregon. Models were developed for predicting gross stand basal-area increment and individual-tree diameter increment. In addition, models were...
Resource Type:: Article
Full Text:: Douglas-fir stands in western Oregon1 Martin W. Ritchie and David W. Hann Abstract: The efficiency of

Nonlinear equations for predicting diameter and squared diameter inside bark at breast height for Douglas-fir

Creator:: Ritchie, Martin W., Hann, David W., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: for Douglas-fir Martin W. Ritchie David W. Hann CONTENTS 3 Background 3 Diameter Inside Bark 4

Ocean to ocean on horseback : being the story of a tour in the saddle from the Atlantic to the Pacific; with especial reference to the early history and development of cities and towns along the route; and regions traversed beyond the Mississippi

Creator:: Glazier, Willard W., 1841-1905
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: . Daniel W. Voorhees-" Blue Jeans" Williams-One Hundred and Twenty-eighth Day-Leave Michi- gan City-Hobart

The river of the West

Creator:: Victor, Francis Fuller
Abstract:: Gerald W. Williams Collection
Resource Type:: Book
Full Text:: <.:xold ] ever·- l\1eek's Invest1n ")nt 1,he Governor and 1\larshal Quarrel Pranks with a J ~w A alute

Thinning ponderosa pine (Pinus ponderosa) stands reduces mortality while maintaining stand productivity

Creator:: Zhang, Jianwei, Ritchie, Martin W., Maguire, Douglas A., and Oliver, William W.
Abstract:: We analyzed 45 years of data collected from three ponderosa pine (Pinus ponderosa Douglas ex P. Lawson & C. Lawson) levels-of-growing-stock installations in Oregon (OR) and northern California (CA), USA, to determine the effect of stand density regimes on stand productivity and mortality. We found that periodic annual increment (PAI)...
Resource Type:: Article
Full Text:: reduces mortality while maintaining stand productivity Jianwei Zhang, Martin W. Ritchie, Douglas A

Quantifying Aboveground Biomass for Common Shrubs in Northeastern California

Creator:: Huff, Steven
Abstract:: Quantifying biomass is important for sustainable forest management. The purpose of this study is to obtain allometric relationships for seven species of shrubs common in northeastern California so that estimates of carbon and fuel loading may be better realized. Although some shrub biomass equations exist, such equations are limited in...
Resource Type:: Masters Thesis
Full Text:: direction throughout this project and beyond; to Dr. Martin Ritchie for aiding me in data analysis and

Germination potential in monogerm seed of Beta vulgaris L.

Creator:: TeKrony, Dennis M.
Abstract:: The objective of this study was to investigate the low seed germination of 12 varieties of Oregon grown monogerm sugar beet, Beta vulgaris L., using several methods to determine the germination potential. The methods were: (1) X-ray radiograph examination, (2) standard laboratory germination following official rules, (3) laboratory germination by...
Resource Type:: Masters Thesis
Full Text:: manuscript. Dr. J. Ritchie Cowan for his advice and guidance throughout my graduate program. Drs

ScholarsArchive@OSU

Development of tree height and diameter growth equations for mid-Willamette Valley Douglas-fir

Disaggregative and individual-tree growth models in theory and application

Umpqua cavalcade : Douglas County Centennial, August 30, 31 and September 1

Evaluation of individual-tree and disaggregative prediction methods for Douglas-fir stands in western Oregon

Nonlinear equations for predicting diameter and squared diameter inside bark at breast height for Douglas-fir

Ocean to ocean on horseback : being the story of a tour in the saddle from the Atlantic to the Pacific; with especial reference to the early history and development of cities and towns along the route; and regions traversed beyond the Mississippi

The river of the West

Thinning ponderosa pine (Pinus ponderosa) stands reduces mortality while maintaining stand productivity

Quantifying Aboveground Biomass for Common Shrubs in Northeastern California

Germination potential in monogerm seed of Beta vulgaris L.

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