A conceptual model of the tidal flat system, emphasizing the
sulfur cycle was presented. Measurements were made of the vertical
distribution within tidal flat deposits of total aerobic and sulfate
reducing bacteria, total sulfides, redox potential, volatile solids,
and particle size. Variations in dissolved oxygen and free sulfides
in the water overlying tidal flat deposits were monitored during a
tidal cycle, and profiles within this overlying water obtained. An
in situ benthic respirometer was used to measure the rate of free
sulfide release to the overlying water.
Laboratory experiments were designed to investigate the
mechanism of sulfide production in tidal flat areas. Growth media
were prepared from extracts of sediment and algae collected from
tidal flats. Rates of sulfide production in these growth media by
mixed cultures of anaerobic bacteria from the same areas were obtained. A mathematical model, based on the common Michaelis-Menton equation, was used to simulate the experiments. A comparison of the simulated and experimental results was presented. / Graduation date: 1972
| Identifer | oai:union.ndltd.org:ORGSU/oai:ir.library.oregonstate.edu:1957/35271 |
| Date | 31 December 1971 |
| Creators | Ramm, Alan Edmund |
| Contributors | Milne, David H. |
| Source Sets | Oregon State University |
| Language | en_US |
| Detected Language | English |
| Type | Thesis/Dissertation |
| Relation | Lower Columbia Explorer, Explorer Site :: Oregon Explorer |
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