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Laboratory investigations of the natural fluorescence of marine phytoplankton

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dc.contributor.advisor Abbott, Mark R.
dc.creator Laney, Samuel R.
dc.date.accessioned 2011-08-26T23:45:38Z
dc.date.available 2011-08-26T23:45:38Z
dc.date.copyright 2000-08-25
dc.date.issued 2000-08-25
dc.identifier.uri http://hdl.handle.net/1957/22920
dc.description Graduation date: 2000 en_US
dc.description.abstract The influence of nitrate availability and irradiance on phytoplankton natural fluorescence was investigated in laboratory cultures of the marine diatom Thalassiosira weissflogii (Bacillariophyceae). Two cultures of phytoplankton, differing only in the nitrate-limited growth rate, were compared to learn how increases in irradiance influences natural fluorescence. Instrumentation was developed for these experiments to maintain and manipulate physical and chemical conditions in the culture vessel while unobtrusively and continuously monitoring the natural fluorescence response. Variable fluorescence in each culture was simultaneously measured to provide a concurrent data set of photosynthetic physiology. Analysis of results from these experiments suggest that gross features in the relationship between fluorescence and irradiance contain information about the way in which phytoplankton perceive the relative abundance of environmental nitrate. This relationship becomes less informative at higher irradiance levels due to the increasing influence of photoinhibition and photoprotection. en_US
dc.language.iso en_US en_US
dc.subject.lcsh Marine phytoplankton en_US
dc.subject.lcsh Nitrates -- Physiological effect en_US
dc.subject.lcsh Fluorescence en_US
dc.title Laboratory investigations of the natural fluorescence of marine phytoplankton en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Master of Science (M.S.) in Oceanography en_US
dc.degree.level Master's en_US
dc.degree.discipline Oceanic and Atmospheric Sciences en_US
dc.degree.grantor Oregon State University en_US
dc.description.digitization File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6770A in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR. en_US
dc.description.peerreview no en_us

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