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Anatomy of chemically and mechanically isolated bark sclereids

Creator:: Lee, Yie-hsiang Lisa
Abstract:: Sclereids are sclerenchyma cells having thick lignified secondary walls. Douglas-fir sclereids, also called bast fibers, are long (1 mm in length), sharply pointed, spindle-shaped fibers of a red-brown color. Sclereids from Douglas-fir bark and nine other western coniferous species were examined for their morphology. The external surface characteristics of sclereids...
Resource Type:: Masters Thesis

Douglas-fir bark : carbohydrates solubilized by the acidified sodium chlorite delignification reaction

Creator:: Lai, Yu-chai Leslie
Abstract:: The inner bark of Douglas-fir was successively extracted with ethanol-water (4:1 v/v), benzene-ethanol (2:1, v./iv), water, and 0.5% aqueous ammonium oxalate solution. The residue was reacted with acidified sodium chlorite, a commonly used reagent to separate lignin from carbohydrates. In general the reaction dissolves the lignin and leaves the carbohydrates...
Resource Type:: Masters Thesis

Predicting diameter inside bark at various upper stem heights for several coniferous species along the western slope of the Cascade Mountains

Creator:: Stuck, Roger Dean
Abstract:: The purpose of this thesis was to develop regression equations for predicting diameter inside bark at various heights up the stem N for four tree species, noble fir (Abies procera Rehd.), Pacific silver fir (Abies amabilies (Doug.) Forbes), Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), and western hemlock (Tsuga heterophylla (Raf.) Sarg.)....
Resource Type:: Masters Thesis

A field approach to study the flight behavior of bark beetle populations (Coleoptera Scolytidae)

Creator:: Gara, R. I. (Robert Imre), 1931-
Resource Type:: Masters Thesis
Full Text:: A field approach to study the flight behavior of bark

Hydrogenation and hydrogenolysis products from bark phenolic acids

Creator:: Peterson, William Emery
Resource Type:: Masters Thesis
Full Text:: Hydrogenationa nd hydrogenolysis products from bark

Acoustic and olfactory behavior of Ips pini (Say) (Coleoptera:Scolytidae) during host invasion and colonization

Creator:: Swaby, James Archie
Resource Type:: Masters Thesis
Full Text:: Results of the Bark Removal Study Characterizing 20 Galleries Examined at Various Times since the Initial

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Creator:: Vernoff, Suellen
Abstract:: Both Leperisinus oregonus and L. californicus are bark beetle species which emerge from Fraxinus latifolia brood logs as sexually immature adults and disperse to living ash. Occasional field observations suggest that, for overwintering and maturation feeding, L. oregonus enter trunks and branches, whereas L.; californicus enter twig crotches, buds and...
Resource Type:: Masters Thesis
Full Text:: . Julius A. Rudinsky Both Leperisinus oregonus and L. californicus are bark beetle species which emerge

Host selection and wood channelization by beetles in conifer logs in western Oregon

Creator:: Zhong, He
Abstract:: The host preferences and wood channelization rates of scolytid and cerambycid beetles were studied at the H. J. Andrews Experimental Forest (Lane County, Oregon) during 1986 and 1987. Attack density and gallery volumes were measured in fall-felled experimental logs of four major conifer species: Douglas-fir (Pseudotsuga mensiesii (Mirb.) Franco), western...
Resource Type:: Masters Thesis
Full Text:: volume of western hemlock were removed by Gnathotrichus. The bark beetles (Coleoptera: Scolytidae

The biologies of two hemlock barkbeetles in western Oregon

Creator:: McGhehey, John Howard
Abstract:: The objectives undertaken in this study were to investigate the biologies and potential economic importance of Pseudohylesinus tsugae Swaine and P. grandis Swaine in young coastal stands of western hemlock (Tsuga heterophylla (Rafn.) Sarg.). The life and seasonal histories of P. tsugae and P. grandis and the association of these...
Resource Type:: Masters Thesis

The distribution and properties of the tannin in Douglas fir bark (Pseudotsuga taxifolia, Britt.)

Creator:: Hubbard, James Kenneth
Resource Type:: Masters Thesis
Full Text:: Fir bark (Psuedotsuga taxifolia, Britt.) THE D ISTRIBUTION AND PROPERTIES OF THE TANNIN IN DOU(VLS

ScholarsArchive@OSU

Anatomy of chemically and mechanically isolated bark sclereids

Douglas-fir bark : carbohydrates solubilized by the acidified sodium chlorite delignification reaction

Predicting diameter inside bark at various upper stem heights for several coniferous species along the western slope of the Cascade Mountains

A field approach to study the flight behavior of bark beetle populations (Coleoptera Scolytidae)

Hydrogenation and hydrogenolysis products from bark phenolic acids

Acoustic and olfactory behavior of Ips pini (Say) (Coleoptera:Scolytidae) during host invasion and colonization

Sound production in Leperisinus oregonous Blackman and L. californicus Swaine (Coleoptera:Scolytidae)

Host selection and wood channelization by beetles in conifer logs in western Oregon

The biologies of two hemlock barkbeetles in western Oregon

The distribution and properties of the tannin in Douglas fir bark (Pseudotsuga taxifolia, Britt.)

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