Dams, Dam Removals, and Freshwater Mussel Conservation

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dc.contributor.advisorMeitzen, Kimberly M.
dc.contributor.authorDascher, Erin Dorothea
dc.contributor.committeeMemberJulian, Jason P.
dc.contributor.committeeMemberZhan, F. Benjamin
dc.contributor.committeeMemberSchwalb, Astrid
dc.date.accessioned2017-08-25T18:23:40Z
dc.date.available2017-08-25T18:23:40Z
dc.date.issued2017-08
dc.description.abstractThis study uses variety of analytical and geospatial techniques to analyze the connections between fragmentation and freshwater mussel distribution and community composition in Texas and the Guadalupe San Antonio River System (GSARS). Additionally, dam removal is assessed and promoted as a strategy for freshwater mussel conservation. The distribution of dams is related to Texas’ climate gradient and the location of population centers. Models of connectivity reveal the increasing amount of fragmentation dams have created in the GSARS through time and the substantial number of undocumented sources of fragmentation in this river system. Patterns of freshwater mussel distribution and community composition are related to the distribution of host fish, climate gradients, hydrologic regimes, and land use. Two dam removal prioritization models are created for the GSARS that incorporate metrics associated with freshwater mussel conservation and individual dam attributes. These models act as broad scale decision support tools for freshwater mussel conservation that can be built upon and further refined with additional data sources.
dc.description.departmentGeography and Environmental Studies
dc.formatText
dc.format.extent213 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationDascher, E. D. (2017). <i>Dams, dam removals, and freshwater mussel conservation</i> (Unpublished dissertation). Texas State University, San Marcos, Texas.
dc.identifier.urihttps://hdl.handle.net/10877/6791
dc.language.isoen
dc.subjectFragmentation
dc.subjectDams
dc.subjectRiver connectivity
dc.subjectFreshwater mussels
dc.subjectDam removal
dc.subjectTexas
dc.subjectGuadalupe-San Antonio River System
dc.subject.lcshMussels--Conservation--Texas--Guadalupe River Watersheden_US
dc.subject.lcshMussels--Conservation--Texas--San Antonio River Watersheden_US
dc.subject.lcshDam retirement--Texasen_US
dc.titleDams, Dam Removals, and Freshwater Mussel Conservation
dc.typeDissertation
thesis.degree.departmentGeography
thesis.degree.disciplineEnvironmental Geography
thesis.degree.grantorTexas State University
thesis.degree.levelDoctoral
thesis.degree.nameDoctor of Philosophy

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