Thesis (M.S.)--University of Wisconsin--Madison, 1960. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 17-18).

Thesis (M.S.)--University of Wisconsin--Madison, 1980. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 65-72).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1976. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 125-129).

Thesis (M.S.)--University of Wisconsin--Madison, 1981. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 41-42).

Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin-Madison, 1954. / Vita. Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1983. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 23-29, 67-68).

Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 148-155).

A study was carried out to determine the relative estrogen-like activity attributed to the isoflavone compounds present in red clover plants (Trifolium pratense). The pure compounds were fed as additives to a non-estrogenic basal diet at total dosages ranging from zero to fifteen milligrams per mouse. The biological assay used for the determination of the estrogen-like activity was a slight modification of that outlined by Kitts et al. in 1959 (63). The isoflavone found to possess the greatest estrogen-like activity was Genisteim followed by Daidzein, Biochanin A and Formononetin. A non-isoflavone compound, Coumestrol, was found to possess a greater estrogen-like activity than any of the isoflavones considered. Mixtures of the pure isoflavones were bio assayed to observe any inhibitory or synergistic characteristics of one upon another. Biochanin A appeared to exert a slight inhibitory action and formononetin a synergistic character. An electrophoretic technique was developed which facilitated the detection of the isoflavones in plant extracts of monthly harvested red clover. An attempt was made to associate the biological activity of the red clover samples and the compounds which were observed in these same samples using electrophoresis / Land and Food Systems, Faculty of / Graduate

Estimates of the above-ground net primary production, standing crop biomass and above-ground autotrophic energy flows were made for eight 0.04 ha plots in naturally seeded 8 to 10 yr old red alder (Alnus rubra Bong.) ecosystems near the University of British Columbia. All plots had closed canopies and covered a range of stem densities (8,204 to 42,971 stems per ha.) and site classes (good, medium and poor). The mean overstorey biomass was 82 mt/ha (range: 40-112 mt/ha) and current overstorey net productivity was 28,601 Kg/ha/yr (range: 17,802-40,831 Kg/ha/yr). Understorey biomass and productivity were 1.5 percent and 2 percent of the overstorey values respectively. Salmonberry (Rubus spectabilis Pursh) formed 68 percent of the understorey biomass and required at least 6 percent full-sunlight before growth was significant. Litter fall averaged 4,454 Kg/ha (range: 3,019-5,713 Kg/ha) and the undecomposed forest-floor (L layer), 5,811 Kg/ha. The plot averages for the biomass accumulation ratio of 2.86 Kg/Kg, for the leaf area index (one side only) of 7.64m²/m², for the foliage assimilation efficiency of 4.9 Kg/Kg and for the standing crop density index of 1.06 Kg/m³ were all in the upper ranges for cool-temperate deciduous forests. The mean caloric content of the above-ground tree biomass was 4.53 Kcal/g ash-containing matter. There was a significant increase in caloric values with increasing height in the tree and during the fall. Net conversion efficiency of visible radiation for the growing season (April-Oct.) was 2.9 percent (range: 1.8-4.2 percent). Energy invested in biomass (biocontent) averaged 37,203 2 Kcal/m² (67 percent stem, 33 percent crown) and energy invested in net primary production (production content) averaged 13,064 Kcal/m² (54 percent stem, 46 percent crown). Seventeen percent of production content was lost to tree-litter fall. The forest floor energy turnover was 1.2 yrs. Denser stands were characterized by a narrower range of dimensional classes, a higher mortality, a greater current net primary production and foliage efficiency, a higher solar energy conversion rate but a similar cumulative biomass to the less dense stands. Density-dependent growth models are hypothesized in which denser stands achieve full site occupancy at a later stage than less dense stands. The potentials of alder as a fuel and biomass-farm crop are discussed. / Forestry, Faculty of / Graduate