Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"freshwater algae"”.
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Uptake and utilization of alanine-1-14C by freshwater algae.
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 0.5 uc DL-alanine-l-^C added at various temperature (10C, 20C, 30C) and …
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Identification and characterization of odorous metabolites produced by selected freshwater algae
… Several commonly occurring odor-producing algae were selected and cultured for this research. Initial studies involved the algal cells and cell-free media from cultures grown under fairly optimal conditions. Gas chromatography-mass spectrometry (GC-MS) and flavor profile analyses (FPA) were …
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Molecular analysis of algal communities in the San Joaquin River
… the 18S rRNA gene of certain taxonomic groups of freshwater algae; there was limited success in specific amplification. Additionally, a primer pair utilizing both the 16S plastid gene and the 16S rRNA gene was tested with success, amplifying both prokaryotic and eukaryotic algae while excluding …
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The Effects of Diesel Fuel on the Growth of Selected Freshwater Phytoplankton
… components of diesel fuel on selected species of freshwater algae. The effects of bacterial degradation products of the diesel fuel were also tested. Results of the investigation indicate that under specific culture conditions two of the algae, Chlamydomonas and Scenedesmus, appeared enhanced by …
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Nanocellulose-based materials for sustainable soil remediation and water purification
… mitigates the adverse effects of TBBPA on freshwater algae, emphasizing its environmental friendliness. DFT calculations provide insights into the TBBPA adsorption mechanism, indicating the involvement of hydrogen bonding and electron donor-acceptor interactions. In the fourth part, the …
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Syntrophic relationships between algae and bacteria in a fresh-water stream and in culture /
Interactions between freshwater algae and bacteria were examined in a natural stream habitat and a laboratory model. Field observations provided circumstantial evidence, in statistical correlation for syntrophy between the microbial populations. This relation is probably subject to control by the …
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Biological Phosphorus Solubilisation in Riparian Vegetated Buffer Strip Soils.
… forms of P, which may be highly bioavailable to freshwater algae. The overall aim of this study was to investigate whether biological solubilisation processes operating within buffer strip soils can increase the risk of dissolved P transfer, and in turn, understand how better to manage them in …
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Long-term salinity trends in Zandvlei estuary and implications for dominant macroalgae
… in rainfall. Historical records of macroalgae identified in the estuary were summarized and no record of the Polysiphonia sp., now dominant in the estuary, was found. Dominant macroalgae in the estuary were identified and grown under a range of salinities (0, 1, 5, 10, 20, 29 ppt). …
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THE RISE OF THE GREEN ALGAE: USING ALGAL PALYNOMORPHS AS PROXIES OF NATURAL EVENTS AND ANTHROPOGENIC ACTIVITIES
… lakes. Climate change threatens the health of freshwater ecosystems, increasing the frequency and intensity of harmful algal blooms and associated anoxia. The acid-resistant remains of freshwater algae and cyanobacteria commonly found in palynological macerations remain underutilized, even …
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Invertebrate Fauna of the Carapaces of the Texas River Cooter (Pseudemys texana) and the Red-Eared Slider (Trachemys scripta elegans)
… species of organisms. The relationship between algae and turtles recently has been quantified. The relationship between turtles and aquatic invertebrates is less known. This study described quantitatively the invertebrate fauna inhabiting the algal covering of the carapaces of 2 species of …
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Evaluation of a Microalgal Bioassay Based on Community Level Physiological Profiling (CLPP)
This thesis examined the use of commercially available Biolog 96-well plates containing different carbon sources for a microalgal bioassay. Quaternary ammonium compounds (QACs) were used as potentially toxic model compounds to demonstrate the applicability of the assay. Toxicity of dodecyl …