Dissertation/Thesis Abstract

Fish biodiversity in floodplain lakes of the Mississippi Alluvial Valley
by Dembkowski, Daniel Jay, M.S., Mississippi State University, 2011, 81; 1491048
Abstract (Summary)

Fish assemblages from 54 oxbow lakes in the Mississippi Alluvial Valley were sampled to identify relationships among environmental variables and fish biodiversity in floodplain lake ecosystems. Environmental variables deterministic over fish biodiversity showed a hierarchical organization and were classified as primary or secondary depending on if one variable was considered to govern another. Primary variables included depth, surface area, surrounding land use, and degree of lake-river interconnectedness. Secondary variables included suites of water quality and primary productivity variables. Maximum depth and percentage of agricultural land surrounding lakes showed strongest relationships with other ecosystem components, significantly influencing water quality, primary productivity, and fish biodiversity. I found contrasting results regarding effect of lake-river interconnectedness on fish biodiversity, but maintain that connectivity is nonetheless an important floodplain lake ecosystem component and suggest that floodplain lake management efforts focus on depth, percentage of agricultural land, and restoration of connectivity.

Indexing (document details)
Advisor: Miranda, Leandro E.
Commitee: Ervin, Gary N., Killgore, K. Jack, Kroger, Robert
School: Mississippi State University
Department: Wildlife and Fisheries
School Location: United States -- Mississippi
Source: MAI 49/05M, Masters Abstracts International
Source Type: DISSERTATION
Subjects: Aquatic sciences, Limnology
Keywords: Biodiversity, Fish assemblages, Floodplain lakes, Mississippi Alluvial Valley
Publication Number: 1491048
ISBN: 9781124588216
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