Theses/Dissertations - Biology
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Design and delivery of novel antimicrobial peptides (AMPs) targeted towards specific microbial pathogens.
(2021-10-22)Targeted therapies selectively eliminate a pathogen without disrupting the native microbiota. Traditional antibiotics, in contrast, destroy the native microbiota along with pathogens, causing adverse health outcomes for ... -
Effects of nutrient stoichiometry and environmental conditions on the growth, toxin concentration, and nitrogen uptake of cyanobacteria.
(2021-10-27)Anthropogenic influences are negatively affecting water bodies by both increasing the concentrations of nutrients as well as contributing to increased temperatures from climate change. Nitrogen (N) and phosphorus (P) are ... -
The production, nitrogen, and phosphorus dynamics of Elodea sp., Potamogeton sp., and Nitella sp. in Sam Rayburn reservoir, Texas.
(1978)The 1977 annual maximum biomass of Elodea sp., Fota- — 2 mogeton sp., and Nitella sp. was found to be 1013.6 g m~ , 168.4 g m **, and 32?.6 g m~'', respectively. Combined, these plants produce 80,528.16 kg dry wt lake”* ... -
Variation in benthic community structure: the role of the macroenvironment along a downstream gradient.
(1984)McKittrick Creek, a discontinuous mountain-desert stream in Guadalupe Mountains National Park, Texas, was sampled at discrete 1 ocations(pools ) to test for differences among biomass, density, species diversity, equitability, ... -
Age and growth of the white crappie, Pomoxis Annularis Rafinesque, in Lake Waco, Texas.
(1969)The major collection of white crappie was from 17 July 1967, to 10 April 1968, by traps and gill nets. Other fish were taken by anglers and seines in June 1968. A total of 1142 fish were included in this study. Spawning ... -
The ostracode Cypridopsis vidua: physiological response due to thermal stress.
(1973)Upper temperature effects were measured on the mean oxygen consumption, carbon dioxide production, ingestion, assimilation, and egestion rates of the ostracode Cypridopsis vidua. to determine positive or negative effects ... -
Some effects of thermal history on the largemouth black bass, Micropterus salmoides (Lacepede), of two central Texas reservoirs receiving power plant effluents.
(1972)Mean annual growth of the first three age classes of largemouth black bass from Tradinghouse Reservoir was near the average growth reported in the literature for southern waters. Largemouth black bass collected from the ... -
Structure and photosynthetic response to abrupt thermal stress of a periphyton algal community colonized in a power plant discharge canal.
(1976)Tremendous increases in energy needs have led to construction of many new power plants. Effects of heated power plant effluents on aquatic organisms have not been clearly established, Periphyton community structure was ... -
Pond succession on the Kaibab Plateau, Arizona.
(1969)Quantitative data were obtained for a serai comparison of five sinkhole ponds on the Kaibab Plateau, Arizona. Species diversity, community metabolism, primary production, and relative serai rank were assayed. Information ... -
Phytoplankton production in a central Texas reservoir.
(1969)Phytoplankton production and other environmental variables were measured from June to November, 1968 to determine factors affecting production and trophic status of the producer community in a shallow, polymictic, central ... -
Phytoplankton productivity of tropical Lake Chapala, Mexico.
(1985)Phytoplankton productivity and other environmental variables were measured for one year (June 1983 - June 1984) at five stations on Lake Chapala, Mexico. Contrary to expectations, productivity in this shallow, tropical ... -
Uptake and utilization of alanine-1-14C by freshwater algae.
(1969)Experiments were conducted x^ith Chlorella pyrenoidosa, Cosmarium formosulum, and Gloeocapsa sp. to determine their relative heterotrophic capacity at various conditions. Cultures were incubated in nutrient media with ... -
Hypolimnetic oxygen decline and the hypolimnetic bacterial community.
(1998)This study reports on bacterial cell size and abundance change during oxygen depletion of Belton and Stillhouse Hollow reservoir. Bacterial cell size and abundance are compared with amount of heterotrophic nanoflagella ... -
Phytoplankton production dynamics in nutrient pulsed systems.
(1997)Phytoplankton production is determined by light and inorganic nutrients which govern the biomass of primary producers. These variables are a function of watershed rainfall periodicity and water quality from the run-off ... -
How does the material adsorbed onto flood-borne sediment affect lake zooplankton populations?
(1997)The effect of materials adsorbed onto flood-borne sediments on Brachionus calyciflorus was investigated in this study. Sediment samples were collected from the North Bosque River and South Bosque River which drain into ... -
Effective targeting of epithelial mesenchymal transition-derived breast cancer stem cells using ophiobolin A, a natural product.
(2021-07-26)Triple negative breast cancer (TNBC) is characterized by the lack of progesterone and estrogen hormone receptors and lack of HER2 overexpression, resulting in limited treatment options. Not only do TNBC patients face limited ... -
Microbial community structure, function, and assembly in Texas prairie soils : insights from a preindustrial-to-future CO2 enrichment gradient.
(2021-08-03)Anthropogenic activities have escalated recent increases in atmospheric CO2 concentration and significantly contributed to global climate change since the industrial revolution. Direct and indirect effects of atmospheric ... -
The effect of clay minerals on cadmium toxicity to bacterial production.
(1990)The effect of clays on cadmium toxicity to bacterial production and specific production was investigated in Lake Brazos, McLennan County, Texas. Bacterial production calculated from ^H-thymidine incorporation rates in ... -
The relationship of turbidity and organic matter to bacterial productivity and biomass in a small Texas lake.
(1986)The relationship between water turbidity and bacterial cell synthesis, specific production and bacterial productivity was investigated in a small Texas reservoir. Sampling dates were selected to include a variety of ... -
The effect of the exotic cladoceran Daphnia lumholtzi on the native zooplankton of a central Texas reservoir.
(1997)Waco reservoir was sampled for one year at five sample sites and six months at two sample sites in an attempt to detect competition between D. lumholtzi and native zooplankton. No competition could be detected. Also ...
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