Index Catalog // ScholarsArchive@OSU

Creator:: Hamilton, Fiona C.
Abstract:: Six stands of Eucalyptus regnans and E. delegatensis with significantly contagious or clumped spatial patterns, were observed between either ages 4 and 12 or ages 30 and 41 years. The effects of aggregation on the development of these stands are described. The prediction of growth and mortality responses of individual...
Resource Type:: Masters Thesis

Creator:: Maguire, Douglas A. (Douglas Alan)
Abstract:: A branch mortality dating technique and whorl sampling strategy were implemented to model five-year crown recession from data collected on temporary plots. Twenty-eight Douglas-fir from two levels-of-growing- stock studies in Oregon and Washington were first dissected to validate the proposed dating technique and assess alternative sampling strategies. Branch mortalities in...
Resource Type:: Dissertation

Creator:: Zumrawi, Abdel Azim M. A.
Abstract:: Diameter growth of Douglas-fir (Pseudotsuqa menziesii (Mirb.) Franco) estimated from increment cores was compared with that obtained from repeated measurements of tree diameter on permanent plots located in two Douglas-fir study areas in the central Coast Range of Oregon. Growth was measured for a 6-year period (1979- 1985). Diameter growth...
Resource Type:: Dissertation

Creator:: Wang, Chao-huan
Abstract:: This paper describes methods that can be used to evaluate stand and tree growth response to a single application of fertilization and/or thinning with data collected from multiple installations. Two kinds of methods were proposed: (1) structure analysis which applies covariance analysis in a blocked design with and without sampling...
Resource Type:: Dissertation

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

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

Creator:: Hanus, Mark L.
Abstract:: A plant's immediate neighborhood reflects its realized level of competitive stress, since competition and natural selection act at the individual level. In stands with continuous canopies competition for light is the dominant spatial interaction. Over 100 spatially explicit indices have been used to characterize the local competitive environment in models...
Resource Type:: Dissertation

Creator:: Mortzheim, Joseph T.
Abstract:: Crown profile was modeled using a system of equations with three components. The first equation predicts the maximum crown width of an open grown tree based on the tree's diameter at breast height. The second equation modifies maximum crown width to represent the largest width of the crown in stand...
Resource Type:: Masters Thesis

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