Index Catalog // ScholarsArchive@OSU

Cavity resources in Oregon white oak and Douglas-fir stands in the mid-Willamette Valley, Oregon

Creator:: Gumtow-Farrior, Daniel L.
Abstract:: Previous studies of bird communities in the mid-Willamette Valley, Oregon, indicated that Oregon white oak (Ouercus garryana) stands supported more cavity-using bird species than sympatric stands of Douglas-fir (Pseudotsuga menziesii). Mature Oregon oak stands are being harvested and few are regenerating. I compared cavity availability for hole-using fauna among 10...
Resource Type:: Masters Thesis

Response of avian communities to herbicide-induced vegetation changes, western Oregon

Creator:: Morrison, Michael L.
Abstract:: The relationships between avian community structure and herbicide modification of vegetation were analyzed on early-growth clearcuts in western Oregon that had received phenoxy herbicide treatment 1 or 4 years previously. Only minor effects of herbicide treatment were evident 1-year after spraying, except for red adler (Alnus rubra), which still exhibited...
Resource Type:: Dissertation
Full Text:: . Members of my doctoral committee D.S. deCalesta, G. Matzke, M. Newton, and J. Stevens -- offered

Population characteristics and habitat utilization of bighorn sheep, Steens Mountain, Oregon

Creator:: Van Dyke, Walter A.
Abstract:: A herd of re-introduced California bighorn sheep (Ovis canadensis californiana) was studied from 15 June 1976 to 31 August 1977. Thirteen major and seven minor habitats were delineated and described. Habitat use by bighorns was observed throughout the study and a habitat preference value (H.P.V.) was calculated based on use...
Resource Type:: Masters Thesis
Full Text:: am grateful to my committee members - D. S. deCalesta, A. H. Winward, and T. P. Kistner, for their

Plagiogravitropic growth in rooted stem cuttings of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) related to indole-3-acetic acid and cytokinins

Creator:: Chien, Ching-te
Abstract:: Endogenous concentrations of indole-3-acetic acid (IAA) and cytokinins were compared to the tendency for plagiogravitropjc growth in rooted stein cuttings of Douglas-fir. A chromatographic method was developed for the purification and quantitation of trace levels of IAA. Two elutions with reverse-phase high performance liquid chromatography (HPLC) using a fluorescence detector...
Resource Type:: Masters Thesis

Leadership behavior and foraging strategies of a herd of Roosevelt elk inhabiting the Oregon Coast Range

Creator:: Marquez, Monica
Abstract:: A cow-calf herd of Roosevelt elk (Cervus elaphus roosevelti) resident to Indian Creek Research Center (ICRC), Oregon was observed June-August, 1985 and March-August, 1986. Cows at ICRC reproduced in alternate years; cows with calves led the herd a significantly greater number of times than cows without calves (1985, P <...
Resource Type:: Masters Thesis
Full Text:: stay at ICRC. I thank Rosemary Stussy for help in the field and Drs. D. S. deCalesta, S. H. Sharrow

Ecology and behavior of bison in the Henry Mountains, Utah

Creator:: Van Vuren, Dirk
Abstract:: Aspects of bison ecology and behavior were studied in the Henry Mountains, Utah during summer 1977 and summer 1978. Foraging distributions of bison and of cattle were compared to elevation, slope, horizontal distance from water, vertical distance from water, aspect, and availability of preferred forage. The effect of bison-cattle interactions...
Resource Type:: Masters Thesis

Measurements of turbulent velocities and an examination of their effects on mixing and suspension of particulate matter

Creator:: Wasowski, Stanley Francis
Abstract:: An experiment was conducted in which a three component drag probe was used to measure the three directional components of turbulent velocity. While velocity measurements were being made, water samples were taken and analyzed for salinity and suspended particulate matter. Three dimensional energy spectra were computed from the velocity records...
Resource Type:: Masters Thesis

Effects of dietary pyrrolizidine alkaloids on copper and vitamin A metabolism in the chicken and Japanese quail

Creator:: Huan, Jianya
Abstract:: Objectives of this study were to examine effects of dietary pyrrolizidine alkaloids (PA) on copper and vitamin A metabolism in the chicken which are very susceptible to the hepatoxic effects of PA and Japanese quail which are highly resistant to PA. Also, the possible interaction between copper and vitamin A...
Resource Type:: Masters Thesis
Full Text:: , I would especially like to thank the members of my graduate committee, Drs. P. D. Whanger, H. S

Evaluation of low quality roughages and agricultural by-products as livestock feed

Creator:: Hussain, Imdad
Abstract:: Nine feeding trials and four laboratory scale experiments were conducted in this study. The study consisted of: (1) use of grass straw:corn juice (CJ) silages with fishmeal and/or alfalfa hay supplementation in beef heifers, sheep, pregnant dairy heifers, water buffaloes and Hereford cows; (2) use of cull onions:grass straw silages...
Resource Type:: Dissertation
Full Text:: his very nice personality. I also would like to thank Dr. H. S. Nakaue and Dr. D. W. Weber for

A study of deshive refining and its effects on high yield kraft pulp

Creator:: Knutsen, Daniel Peter
Abstract:: High yield unbleached kraft pulp for linerboard and bag paper was deshived in a PFI mill and a Bauer model 187 double disk refiner. Levels of plate gap, specific energy consumption, throughput rate, and stock consistency were varied to control PFI mill and Bauer 187 deshive refining. Shive content reductions...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Cavity resources in Oregon white oak and Douglas-fir stands in the mid-Willamette Valley, Oregon

Response of avian communities to herbicide-induced vegetation changes, western Oregon

Population characteristics and habitat utilization of bighorn sheep, Steens Mountain, Oregon

Plagiogravitropic growth in rooted stem cuttings of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) related to indole-3-acetic acid and cytokinins

Leadership behavior and foraging strategies of a herd of Roosevelt elk inhabiting the Oregon Coast Range

Ecology and behavior of bison in the Henry Mountains, Utah

Measurements of turbulent velocities and an examination of their effects on mixing and suspension of particulate matter

Effects of dietary pyrrolizidine alkaloids on copper and vitamin A metabolism in the chicken and Japanese quail

Evaluation of low quality roughages and agricultural by-products as livestock feed

A study of deshive refining and its effects on high yield kraft pulp

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