Current Search: Winkelmann, Douglas A. (x)
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Title
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The Microbial Biochemical Potential of Two Detention-Retention Marshes in the Kissimmee River Valley Watershed.
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Creator
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Winkelmann, Douglas A., ,, Natural Sciences
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Abstract / Description
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University of Central Florida College of Natural Sciences Thesis; One of the major programs to abate the deterioration of water quality in the Lake Okeechobee watershed was the addition of detention-retention facilities. The microbial biochemical potential of two different detention-retention marshes in the Kissimmee River Valley were examined to determine their effectiveness to improve water quality. The kinetics of decomposition and nutrient mineralization and assimilation, as mediated by...
Show moreUniversity of Central Florida College of Natural Sciences Thesis; One of the major programs to abate the deterioration of water quality in the Lake Okeechobee watershed was the addition of detention-retention facilities. The microbial biochemical potential of two different detention-retention marshes in the Kissimmee River Valley were examined to determine their effectiveness to improve water quality. The kinetics of decomposition and nutrient mineralization and assimilation, as mediated by microorganisms, and the enumeration of microorganisms capable of utilizing various substrates were studied. Various communities within each marsh were studied during a 2-year period. The decomposition rates of 3 plant substrates were determined. Chitin was used as a standard for organic decomposition. Chitin had significantly higher (p [less than] 0.05) rates of decomposition than the plant material in all sites at both marshes. Chitin decomposition rates were significantly different (p[less than]0.05) between sites. Significant differences (p[less than]0.05) in rates of decomposition were also found between the 3 plant substrates. the difference in decomposition rates for the 3 plant substrates existed within sites, as well as between sites. The number of microorganisms and the mineralization and assimilation rates were significantly different (p[less than]0.05) between the detention-retention marshes. Significant differences (p[less than]0.05) in numbers of microorganisms and rates were also found between sites within each marsh. The variation in detrital processing demonstrated that site-specific dynamics occurred in the detention-retention marshes. Higher decomposition rates were associated with sediment sites containing organic matter with either a continuous, shallow flow of water or alternate wet/dry periods. Decomposition rates were lowest at sites containing sandy sediments, and dry soil sites without a flow of water. Higher aerobic and anaerobic bacterial activity was also associated with sediment sites containing organic matter with either a continuous, shallow flow of water at alternate wet/dry periods. Higher fungal activity was associated with alternate wet/dry sediment sites, but only during dry periods. Microbial activity was lowest at sites containing sandy sediments and in water columns.
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Date Issued
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1981
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Identifier
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CFR0008161, ucf:53068
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Format
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Document (PDF)
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PURL
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http://purl.flvc.org/ucf/fd/CFR0008161
