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  • 1. El-Feraly, Farouk Isolation and characterization of antitumor principles from Liriodendron tulipifera L. /

    Master of Science, The Ohio State University, 1966, Graduate School

    Committee: Not Provided (Other) Subjects:

  • 2. Koch, Jerry A investigation of internal water relations of tree stems by electric resistance /

    Master of Science, The Ohio State University, 1960, Graduate School

    Committee: Not Provided (Other) Subjects:

  • 3. Harraz, Fathalla Structural studies of natural products of Liriodendron tulipifera and Amphiachyris dracunculoides : I. Sesquiterpene lactones of Liriodendron tulipifera. II. Diterpene lactones of Amphiachyris dracunculoides /

    Doctor of Philosophy, The Ohio State University, 1984, Graduate School

    Committee: Not Provided (Other) Subjects: Health Sciences

  • 4. Wilton, John Studies of natural products from Liriodendron tulipifera, Simmondsia californica and hardwood bark compost.

    Doctor of Philosophy, The Ohio State University, 1982, Graduate School

    Committee: Not Provided (Other) Subjects: Chemistry

  • 5. Fairchild, Edward Structural studies of selected secondary metabolites.

    Doctor of Philosophy, The Ohio State University, 1976, Graduate School

    Committee: Not Provided (Other) Subjects: Health Sciences

  • 6. Burns, Denver The impact of tuliptree scale feeding on its host, yellow-poplar /

    Doctor of Philosophy, The Ohio State University, 1967, Graduate School

    Committee: Not Provided (Other) Subjects: Biology

  • 7. White, William Soil moisture, fire, and tree community structure

    Master of Science (MS), Wright State University, 2011, Biological Sciences

    My study was conducted to understand tree community structure and how soil moisture and fire frequency influence them. Eighteen plots were placed in the Edge of Appalachia Nature Preserve of unglaciated southern Ohio: nine within a prescribed burn site and nine control sites outside the burn. Sites were stratified in triplicate across GIS-derived integrated soil moisture index (IMI) classes. Burning was done in 1996. Overstory species dbh and sapling species were sampled 1997, 2001, and 2008. Overstory stems were located in 2009 using range finders. Stem locations were loaded into GIS using novel techniques to quantify individual stem IMI values. Nonmetric multi-dimensional scaling identified greater heterogeneity among intermediate and mesic sites than xeric sites. Multi-response permutation procedures did not detect community differences between burned and unburned sites, but did detect strong (A=0.3 to 0.2, T=-3.6 to -4.1) distinct community differences that were statistically significant (P < 0.05) among xeric, intermediate, and mesic IMI classes. Analysis of variance identified significant initial effects of burning on Carya saplings and overstory Sassafras albidum stems, as well as lasting effects significant on Carpinus caroliniana. ANOVA detected significant differences across all sampling years in sapling relative number for Acer rubrum, Sassafras albidum, and Carpinus caroliniana saplings, as well as Quercus prinus, and Liriodendron tulipifera overstory stems between IMI classes. Bonferroni adjusted Kolmogorov-Smirnov tests were used to identify and quantify IMI habitat restrictions of species. Quercus prinus dominated xeric sites (IMI quartiles 18-24), Carya occupied intermediate sites (IMI quartiles 22-44), Acer saccharum occupied intermediate to mesic sites (IMI quartiles 33-44), Sassafras albidum (IMI quartiles 20-40, IMI median 43) and Liriodendron tulipifera (IMI quartiles 39-45) were restricted to mesic sites. My r (open full item for complete abstract)

    Committee: James Runkle PhD (Advisor); James Amon PhD (Committee Member); Thomas Rooney PhD (Committee Member) Subjects: Ecology