Browsing BIO Theses by Author "Schneegurt, Mark A."
Now showing items 1-11 of 11
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Abundance of nifH genes in urban, agricultural, and pristine prairie streams exposed to different levels of nitrogen loading
Santos-Caton, Ingrid R. (2007-05)Ecosystem processes drive biogeochemical cycles that influence input and losses of nutrients in the biosphere. Through human activities the environment has been highly enriched with nutrients, especially nitrogen. In most ... -
Characterization of the bacterial community on the feathers of wild dark-eyed juncos (Junco hyemalis)
Dille, John Wesley (Wichita State University, 2013-05)Wild birds rely on plumage for protection, reproductive display, and flight. Alterations to feather structure or color by symbiotic microbes may reduce survival and reproductive fitness. Feathers are waxy oligotrophic ... -
Characterizing bacterial growth in eutectic and saturated salt solutions relevant to mars
Wilks, Jonathan M. (Wichita State University, 2017-07)Although Mars is a hyperarid environment that poses many challenges to any potential inhabitants, liquid water is available. Many believe this liquid water is formed by the deliquescence of hygroscopic salts. Upon absorbing ... -
Culture-independent molecular phylogenetic analysis of microbial communities living at saturating levels of magnesium sulfate
Kilmer, Brian R. (Wichita State University, 2014-12)Athalassohaline epsomite lakes in the northwestern plains of North America contain high concentrations of magnesium sulfate (MgSO4). Hot Lake located outside of Oroville, WA is one such lake in which the MgSO4 precipitates ... -
Dark grown chlorella kessleri fed corn, sorghum and lignocellulosic hydrosylates for algal biodiesel production
Dandinpet, Kiran K. (Wichita State University, 2013-07)Biodiesel production by microalgae is typically driven by photosynthetic light harvesting. Production in open ponds is hampered by high water requirements and contamination. Photobioreactor are highly engineered systems ... -
Ecological succession of the microbial community of a spacecraft assembly facility in enriched brines relevant to mars
Carte, Meris Elizabeth (Wichita State University, 2020-12)Life detection missions to Mars should be as free of microbial organisms as possible to avoid transporting contaminants on spacecraft surfaces. Any microbes that make the trip to Mars or the round-trip back to Earth may ... -
Effects of phosphorus and iron limitation on the accumulation of lipids by Chlorella kessleri grown in the dark on lignocellulosic hydrolysate
Shrestha, Nayan (Wichita State University, 2015-12)Biodiesel production from microalgae is generally conducted through light dependent growth. Though promising and technically feasible, it is logistically difficult to produce a high-density biomass of microalgae due to ... -
Molecular and phenetic characterization of the bacterial assemblage of Basque Lake, BC, an environment with high concentrations of magnesium sulphate, and its relevance to mars
Crisler, James D. (Wichita State University, 2017-05)Halotolerant bacteria favor environments containing high concentrations of salts. While there are a multitude of hypersaline environments containing various salts on Earth, those heavily dominated with sodium chloride ... -
Soil community analysis along a salt gradient using denaturing gradient gel electrophoresis of PCR-amplified 16s rRNA genes
Dutta, Partha (2006-05)Many studies of hyper saline environments have been performed, mainly on aquatic systems. However, the microbial community in terrestrial thallasohaline environments has not been studied extensively. To our knowledge, this ... -
Sucretolerance in oligosaline soils and halotolerant bacteria
Fredsgaard, Casper (Wichita State University, 2014-12)It is well established that microbial growth is decreased with the reduction of available water in a given environment. The availability of water is referred to as water activity and is expressed in aw values, that provide ... -
Survival of salinotolerant bacteria in brines relevant to Mars at low temperatures nonpermissive for growth
Ratcliffe, Alexander L. (Wichita State University, 2022-05)The limits at which life can occur in our world may not be the same in other worlds. A common theme in astrobiology is to search for potential habitable regions beyond Earth, and by developing a better understanding of ...