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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Armillaria species in the Missouri Ozarks forests

Baucom, Deana L. January 2005 (has links)
Thesis (M.S.) University of Missouri-Columbia, 2005. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (May 18, 2007) Includes bibliographical references.
42

Tannin content of certain California oaks

Carton, Arthur 01 January 1952 (has links)
The purpose of this paper is to investigate three California oaks as possible sources of tannin. Even though the study of the three varieties of tree may not be representative samples, the procedures developed may prove to be valuable in a more extensive research by other workers.
43

Host-parasite relationships of the oak wilt fungus /

Bart, George James January 1956 (has links)
No description available.
44

First year effects of thinning coppice on Quercus emoryi in southeastern Arizona

Bennett, Duane Anthony, 1956- January 1990 (has links)
This study was conducted to measure the effects of thinning coppice on Emory oak (Quercus emoryi). Thinning treatments were applied to sprouts of different ages. Height and diameter measurements were taken immediately after thinning and again one year later. Sprouts were classified into 5 age groups, 4 stump diameter groups, and 4 residual sprout groups. The interactions of these treatments and their effect on volume growth were analyzed. The results showed volume growth per stump was directly related to the number of sprouts per stump; volume growth per sprout was inversely related to the number of sprouts per stump; volume growth per stump and per sprout were both significantly affected by the age of the sprout at the time of thinning; and that stump diameter size had no significant effect on volume growth.
45

The Oak Cliff Tribune Under the Leadership of Ray Zauber

Babb, Judith Killen 08 1900 (has links)
This study evaluates the influence of The Oak Cliff Tribune under the leadership of Ray Zauber, from late 1946 to August, 1978. The study shows the contributions of The Oak Cliff Tribune for the area, its influence within the community and with community leaders, and determines what gives the paper its particular character. The study traces the history and development of the newspaper in four periods, 1903-1946, 1946-1959, 1959-1969, and 1969-1978; and concludes that The Oak Cliff Tribune has had a great effect on the development of Oak Cliff. The sources of data for this study include community leaders, current and former employees of The Oak Cliff Tribune, Ray Zauber, and the newspaper itself.
46

The biogeography of Oregon white oak (Quercus garryana) in central Oregon

Voeks, Robert Allen 01 January 1981 (has links)
The study proceeded as follows: The distribution of Q. garryana was mapped through field reconnaissance. Annual rings from fifteen trees were counted in order to establish age versus trunk diameter ratios. This greatly simplified the dating of trees. Transects were then run through individual groves to determine population age structures. These age structures, along with Q. garryana's distribution patterns, were graphically compared with historic temperature, precipitation, and growing season data. The effect of livestock grazing on oak reproduction was examined. Potential vagility of the species was evaluated by estimating the potential for acorn dispersion by airfall, streams, vertebrates, and the human (aboriginal) population. Finally, pollen evidence was scrutinized in conjunction with acorn dispersal rates in order to determine the longer term history of Q. garryana in this portion cf its range.
47

Bacterial leaf scorch Xylella fastidiosa wells et al. and its potential insect vectors in pin and red oaks in central New Jersey

Zhang, Jianxin, January 2008 (has links)
Thesis (Ph. D.)--Rutgers University, 2008. / "Graduate Program in Entomology." Includes bibliographical references (p. 132-139).
48

Sampling efficiency evaluation in Emory oak woodlands of southeastern Arizona

Zanga, Ambroise, 1956- January 1989 (has links)
A forest inventory was made by a two-man team in the Emory oak (Quercus emoryi) woodlands, near the Huachuca Mountains, in southeastern Arizona. Two plot sizes, 1/10th, and 1/25th hectare, and three basal area factors, 2, 4 and 6 (square meters per hectare) were used. Tree tally time was recorded, but the travelling time between plots was not recorded. Total number of trees, total basal area, and total volume of trees per hectare were measured, summarized, and analyzed. Significant differences were noted between plot sampling and point sampling. Results suggested that with plot sampling, 1/25th hectare plot was more efficient than 1/10th hectare plot for all measures of forest densities. With point sampling, basal area factor 6 had the highest relative sampling efficiency in terms of trees per hectare. Basal area factor 2 had the highest relative sampling efficiency in terms of basal area and volume per hectare. From this information, more efficient forest inventories of the Emory oak woodlands can be designed.
49

Floristic studies in Oak Creek Canyon

Deaver, Chester F. January 1930 (has links)
No description available.
50

Elevated atmospheric carbon dioxide and chronic atmospheric nitrogen deposition change nitrogen dynamics associated with two Mediterranean climate evergreen oaks /

Cario, Cara Hinkson. January 2005 (has links)
Thesis (Ph. D.)--University of California, Davis and San Diego State University, 2005. / Includes bibliographical references. Also available via the World Wide Web. (Restricted to UC campuses)

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