Watershed-sediment-biotic linkages in small streams of Missouri's Osage River Basin

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Watershed-sediment-biotic linkages in small streams of Missouri's Osage River Basin

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dc.contributor.advisor Rabeni, Charles F. en_US
dc.contributor.author Turner, Andrew W. en_US
dc.coverage.spatial Missouri -- Osage River
dc.coverage.spatial Missouri -- Osage River Watershed
dc.date.accessioned 2010-02-09T17:56:47Z
dc.date.available 2010-02-09T17:56:47Z
dc.date.issued 2009 en_US
dc.date.submitted 2009 Fall en_US
dc.identifier.other TurnerA-121409-T2796 en_US
dc.identifier.uri http://hdl.handle.net/10355/5358
dc.description The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. en_US
dc.description Title from PDF of title page (University of Missouri--Columbia, viewed on January 19, 2010). en_US
dc.description Thesis advisor: Dr. Charles F. Rabeni. en_US
dc.description Includes bibliographical references. en_US
dc.description M.S. University of Missouri--Columbia 2009. en_US
dc.description Dissertations, Academic -- University of Missouri--Columbia -- Fisheries and wildlife. en_US
dc.description.abstract Sedimentation is an important variable influencing the complex physical and biological features of streams. Hierarchical models of watershed characteristics, within third-order streams of the Osage River Basin in Missouri, were developed to identify linkages between watershed characteristics, stream sedimentation, and fish assemblages. The models aim to provide insights into both natural and anthropogenic variables associated with sedimentation, as well as the likely response fish assemblages would have to inputs of excess sedimentation from human activities. A total of 36 sites was classified based on soil type and land-use variables previously shown to be associated with stream sedimentation. Following classification, sites were sampled to define sediment and substrate composition. A subset of sites (n=12), encompassing the range of sedimentation levels, was sampled to define fish-assemblage composition. Results indicate soil classification of a watershed may predict the range of sedimentation and substrate composition in streams. Both anthropogenic and natural-watershed variables relate to the degree of stream sedimentation. Variables associated with increased sedimentation include increased percent cropland within a watershed, riparian width alteration, and cattle access to the stream. Alternatively, variables negatively associated with sedimentation include percent forestland within a watershed, stream gradient, and riparian width. Analysis of fish-sediment relations shows that varying levels of sedimentation were associated with fish assemblage composition. This study identifies linkages on a system wide level and provides insights into the processes of stream sedimentation. en_US
dc.language.iso en_US en_US
dc.publisher University of Missouri--Columbia en_US
dc.subject.lcsh River sediments en_US
dc.subject.lcsh Biotic communities en_US
dc.subject.lcsh Watersheds en_US
dc.title Watershed-sediment-biotic linkages in small streams of Missouri's Osage River Basin en_US
dc.type Thesis en_US
thesis.degree.discipline Fisheries and wildlife sciences en_US
thesis.degree.grantor University of Missouri--Columbia en_US
thesis.degree.name M.S. en_US
thesis.degree.level Masters en_US
dc.identifier.oclc 500918446 en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. Graduate School. Theses and Dissertations. Theses. 2009 Theses
dc.relation.ispartofcollection 2009 Freely available theses (MU)


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