Policy implications of aging and manipulated river systems case study: Black Warrior River

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dc.contributor Bearden, Bennett L.
dc.contributor Brommer, David M.
dc.contributor Ward, Amelia K.
dc.contributor Weber, Joe
dc.contributor.advisor Bryan, Colgan Hobson
dc.contributor.author Wells, Thomas
dc.contributor.other University of Alabama Tuscaloosa
dc.date.accessioned 2017-04-26T14:22:22Z
dc.date.available 2017-04-26T14:22:22Z
dc.date.issued 2012
dc.identifier.other u0015_0000001_0000919
dc.identifier.other Wells_alatus_0004D_10971
dc.identifier.uri http://ir.ua.edu/handle/123456789/2920
dc.description Electronic Thesis or Dissertation en_US
dc.description.abstract This dissertation is a policy analysis of lateral connectivity issues on aging and manipulated river systems. The research focuses on associated issues of ecosystem health and human impacts as illustrated in a case study of Alabama's Black Warrior River. The study area on the Black Warrior River, river mile 213 to 292, is representative of other manipulated river systems throughout the United States. The construction of two federally owned locks and dams within the study area created a multi-use inland waterway due to the formation of lentic environments upstream of the regulating structures. The inland waterway's historic management was largely one-dimensional and main channel-oriented. This one-dimensional approach caused a significant deterioration of lateral connectivity. Between 1965 and 2006, the number of open or marginally open entrances to off-channel areas declined from 251 to 119. Open and marginally open off-channel areas decreased 1,125 acres between 1965 and 2006, representing a 26 percent decline. Overall, 643 off-channel acres, regardless of status (i.e., open, marginally open, or closed), were lost during this timeframe, representing a 15 percent decline, and the average and median size of off-channel areas also declined 30 and 53 percent respectively. The decline in lateral connectivity resulted in environmental impacts to the area's fishery and differential effects to a range of stakeholder groups. Policy alternatives were developed and their social impacts assessed to provide decision-makers within the study area and across the United States with options to address lateral connectivity issues. en_US
dc.format.extent 264 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated. en_US
dc.subject Water resources management
dc.subject Geography
dc.subject Public policy
dc.title Policy implications of aging and manipulated river systems case study: Black Warrior River en_US
dc.type thesis
dc.type text
etdms.degree.department University of Alabama. Department of Geography
etdms.degree.discipline Interdisciplinary Studies
etdms.degree.grantor The University of Alabama
etdms.degree.level doctoral
etdms.degree.name Ph.D.

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