Index Catalog // ScholarsArchive@OSU

Use of nondestructive spectroscopy to assess chlorophyll and nitrogen in fresh leaves

Creator:: Ding, Pinghai
Abstract:: Four aspects of factors influencing the accuracy of nondestructive chlorophyll (Chl) and nitrogen (N) measurement in fresh leaves were studied: (1) optimum wavelength (OW) identification; (2) indices development and evaluation; (3) influence of leaf properties; and (4) influence of meter parameters and sampling technique. Results were used to develop indices...
Resource Type:: Dissertation
Full Text:: committee, Drs. Carolyn Scagel, Robert Linderman, Carmo M. Vasconcelos, John A. Young, and Thomson K

Validation of elk distribution models at Sled Springs Wildlife Demonstration Area, northeast Oregon

Creator:: Coe, Priscilla K.
Abstract:: Landscape models for elk distribution developed at Starkey Experimental Forest and Range from 1993-1995 were tested on another landscape during 2003-2005 at Sled Springs Wildlife Demonstration Area. Using location data obtained from 23 wild elk captured and fitted with GPS telemetry collars, 8 spatial resource selection function models representing 8...
Resource Type:: Masters Thesis
Full Text:: , my major professor, and my committee members Doug Johnson, Mike Wisdom, and John Cook - for their

The influence of contemporary forest harvesting on summer stream temperatures in headwater streams of Hinkle Creek, Oregon

Creator:: Kibler, Kelly Maren
Abstract:: Stream temperature is a water quality parameter that directly influences the quality of aquatic habitat, particularly for cold-water species such as Pacific salmonids. Forest harvesting adjacent to a stream can increase the amount of solar radiation the stream receives, which can elevate stream temperatures and impair aquatic habitat. Oregon Forest...
Resource Type:: Masters Thesis

Collegiate student's epistemologies and conceptual understanding of the role of models in precalculus mathematics : a focus on the exponential and logarithmic functions

Creator:: Melendy, Robert F.
Abstract:: Collegiate student's conceptual distinctions of what define a mathematical and a physical model seems to be affected by the epistemological beliefs they hold about this knowledge. These beliefs seem to influence student's thinking and reasoning as they embark on problem solving activities in collegiate mathematics. Student's epistemological beliefs of mathematical...
Resource Type:: Dissertation
Full Text:: . Larry G. Enochs for his immense encouragement and for introducing me to the science and technique of

Stand development of Cordia alliodora (Boraginaceae), a neotropical secondary forest tree in northern Costa Rica (1992-1996)

Creator:: Hummel, Susan Stevens
Abstract:: Cordia alliodora is used for reforestation programs and farm income in northern Costa Rica. This study investigated: 1) responses of C. alliodora associated with stand density, or trees/ha (TPH), and 2) plant diversity and biomass in the understory of C. alliodora plantations. Three Nelder plots, 31 temporary plots and 6...
Resource Type:: Dissertation

Disease resistance and spring phenological characteristics of Ribes L. germplasm

Creator:: Dalton, Daniel T.
Abstract:: North American cultivation of Ribes L. may expand as small fruit growers seek species to diversify horticultural crops. The Ribes industry was suppressed for decades out of fear that cultivated black currants and gooseberries would intensify the fungal disease white pine blister rust (WPBR) on five-needle pine (Pinus L. section...
Resource Type:: Masters Thesis
Full Text:: the people of horticultural research. To the members of my committee, Dr. Chris Mundt, Dr. John

Cryopreservation of Shoot Tips: Antioxidant Investigations with Rubus and Protocols for Mentha and Vaccinium

Creator:: Uchendu, Esther Eyiuche
Abstract:: Oxidative stress that occurs during cryopreservation may be reduced by the addition of antioxidants. Vitamin E (Vit E), Vitamin C (Vit C), glutathione (GSH), lipoic acid (LA), glycine betaine (GB) and polyvinylpyrrolidone (PVP) were applied at four steps of the PVS2 vitrification protocol (pretreatment, loading, rinsing, and regrowth). Shoot tips...
Resource Type:: Dissertation
Full Text:: manuscripts and much useful advice. I thank all my committee members; Drs. Tony Chen, Maret Traber, John

A preliminary investigation into the use of the tarif system and three tree selection methods for obtaining Douglas-fir stand and stock tables from large-scale aerial photography

Creator:: McCadden, Richard Jay
Abstract:: As a preliminary step toward the establishment of a 70 mm. aerial photo timber inventory system capable of generating accurate stand tables, stock tables, and gross volume estimates, this project focuses on the development of a system which (1) eliminates the need to measure tree height on the photos through...
Resource Type:: Masters Thesis

Stand structures of Oregon white oak (Quercus garryana) woodlands and their relationships to the environment in southwestern Oregon

Creator:: Gilligan, Laurie A.
Abstract:: Large areas of non-coniferous communities in southwestern Oregon are thinned to reduce fire hazard and accomplish ecosystem restoration, under the assumption that current fuel loads are unnaturally high. Although Oregon white oak (Quercus garryana) woodlands are a characteristic landscape component in this region, little is known about their current or...
Resource Type:: Masters Thesis
Full Text:: -dimensions, and John Lambrinos for serving as a graduate representative. Funding for this research was

Ecology of feral pigs on Santa Catalina Island

Creator:: Baber, Daniel W.
Abstract:: A feral pig population on Santa Catalina Island, California, was studied for 17 months beginning in July 1980. Density was estimated to be 21 to 34 pigs/km² (95% confidence interval) using capture-recapture techniques. Dry season home ranges determined from radio-telemetry data were small and differed significantly between boars and sows....
Resource Type:: Dissertation

ScholarsArchive@OSU

Use of nondestructive spectroscopy to assess chlorophyll and nitrogen in fresh leaves

Validation of elk distribution models at Sled Springs Wildlife Demonstration Area, northeast Oregon

The influence of contemporary forest harvesting on summer stream temperatures in headwater streams of Hinkle Creek, Oregon

Collegiate student's epistemologies and conceptual understanding of the role of models in precalculus mathematics : a focus on the exponential and logarithmic functions

Stand development of Cordia alliodora (Boraginaceae), a neotropical secondary forest tree in northern Costa Rica (1992-1996)

Disease resistance and spring phenological characteristics of Ribes L. germplasm

Cryopreservation of Shoot Tips: Antioxidant Investigations with Rubus and Protocols for Mentha and Vaccinium

A preliminary investigation into the use of the tarif system and three tree selection methods for obtaining Douglas-fir stand and stock tables from large-scale aerial photography

Stand structures of Oregon white oak (Quercus garryana) woodlands and their relationships to the environment in southwestern Oregon

Ecology of feral pigs on Santa Catalina Island

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