Thesis (M.S.)--University of Wisconsin--Stevens Point, 2006. / Includes bibliographical references (leaves 55-57).

Red oak (Quercus spp.) acorns provide food for wildlife and are propagules for regeneration of these trees. Annual yield of acorns varies temporally and site-specifically. I examined acorn yield in relation to hydrology and soils of hardwood bottomlands at five sites in the Mississippi Alluvial Valley and a site in the Mississippi Interior Flatwoods Region during fall-winter 2012-2013. Acorn yield varied among sites (mean = 44.9 acorns/m2; SE = 6.7; CV = 14.9%). Duration of flooding during the growing season differed among sites which influenced soil characteristics. Acorn yield varied inversely with number of days sites were inundated during the growing season (R2 = 0.6725; P = 0.0456; n = 6) during 2012-2013. Managers should consider alleviating growing season flooding of red oaks, which may increase acorn yield and sustain red oaks and other bottomland hardwoods.

No description available.

Northern red oak (Quercus rubra l.), a valuable timber in species in the eastern United States, has a delayed growth in the early years of establishment. Freshly harvested northern red oak seed exhibit dormancy that may be broken by stratification or pericarp removal. In this research, germination, seedling growth and adenylate energy metabolism of northern red oak with pericarp removed and intact was measured during stratification (5C) for two consecutive years. Two seed moisture levels (50% and 70% d.w.) during stratification were tested on intact acorns, pericarp removed seeds and acorns intact during stratification and then the pericarp removed prior to germination. Pericarp removal increased germination five-fold at harvest (from 10% to 55%), but almost half the naked seeds were still dormant. There was a deepening of dormancy during the first 4 weeks of stratification; but, stratification for 6 to 8 weeks significantly increased germination and germination rate. Etiolated seedlings grew taller and faster from acorns that had been stratified 8 to 12 weeks than from acorns with no or only 4 weeks of stratification. Significant increases in root, shoot, and axial dry weight and lengths, and root/shoot ratios were observed as early as 14 days after germination. Pericarp removal had no significant effect on seedling growth. Relative growth rates of seedlings were compared by pericarp treatment and stratification time. There were no significant differences in germination or seedling growth between 50% and 70% seed moisture content. Adenylate (ATP, ADP, AMP) levels were measured using the luciferin-luciferase assay). Energy charge (EC) increased during stratification at 2 weeks when germination was low. Thereafter EC decreased before increasing at 8 weeks of stratification. This second rise in EC was concurrent with an increase in germinability. ATP concentrations during the 28 day growth time appeared to be associated with surges in relative growth rates of roots and shoots. / Ph. D.

Thesis (M.S.)--University of Tennessee, Knoxville, 2002. / Title from title page screen (viewed Feb. 26, 2003). Thesis advisor: Paris Lambdin. Document formatted into pages (viii, 87 p. : ill. (some col.), 1 col. map). Vita. Includes bibliographical references (p. 66-75).

Typescript. / Digitized by Kansas Correctional Industries

Thesis (Ph. D.)--Rutgers University, 2008. / "Graduate Program in Entomology." Includes bibliographical references (p. 132-139).

Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaves 204-228). Also available on the Internet.

Thesis (M.S.)--University of Missouri-Columbia, 2004. / Typescript. Includes bibliographical references (leaves 204-228). Also available on the Internet.

Acorns of red oaks (Quercus spp; Subgenus Erythrobalanus) are important forage for wildlife and seed for oak regeneration. I estimated production of viable acorns by red oaks in 5 forests in the Mississippi Alluvial Valley (MAV) and 2 greentree reservoirs (GTRs) in Mississippi. Mean acorn production in the MAV was 439 kg(dry)/ha of red oak crown (CV = 29%) during autumn-winter 2009-2010 and 794 kg/ha (CV = 19%) in GTRs during autumn-winters 2008-2010. I recommend researchers sample acorn production in the MAV for ≥5 years to improve precision of estimates (i.e., CV ≤ 15%). I estimated mass and gross energy (GE) of viable red oak acorns after 90 days in unflooded and flooded hardwood bottomlands in Mississippi. Within species, mass loss of acorns was <8.4% and variation in GE ≤0.08 kcal(dry)/g. Winter decomposition of intact viable red oak acorns would have minimal effect on wildlife carrying capacity of hardwood bottomlands.