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Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/35259
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dc.contributor.authorKillgore, K. Jack-
dc.contributor.authorGeorge, Steven G.-
dc.date.accessioned2020-01-22T20:38:25Z-
dc.date.available2020-01-22T20:38:25Z-
dc.date.issued2020-01-
dc.identifier.govdocMRG&P Report No. 29-
dc.identifier.urihttps://hdl.handle.net/11681/35259-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/35259-
dc.descriptionMRG&P Report-
dc.description.abstractBenthic fish assemblages were compared in 2016-2017 among three different bank types in the Lower Mississippi River (LMR) using hoopnets: Articulated Concrete Mattress (ACM) along main channel banks, natural banks along main channel, and natural banks in a secondary channel. Species richness was highest in secondary channels (21 species), followed by ACM (20 species), and natural banks (16 species). However, abundance of dominant species (i.e., Flathead Catfish, Blue Catfish, Freshwater Drum, and Buffalo) differed seasonally. Blue Catfish were more abundant along natural banks and secondary channels during the summer. Flathead Catfish abundance peaked during the summer in the secondary channels but were also abundant along ACM year-round. Freshwater Drum abundance was highest along natural banks in the winter and ACM in the spring. Juvenile Buffalo utilized secondary channels in the winter indicating the importance of these habitats for over-wintering fishes. Comparison of the native benthic fish assemblage between 1985 and 2016 17 revealed minimal differences in species composition and abundance indicating long-term stability and resilience of LMR fishes. An exception was the prevalence of Asian Carp (Silver and Bighead), which were two to three times higher than any native species.en_US
dc.description.sponsorshipMississippi River Geomorphology and Potamology Program (U.S.)en_US
dc.description.tableofcontents.......................................................................................................................................................... ii Figures and Tables ........................................................................................................................................ iv Preface ............................................................................................................................................................. v 1 Introduction ............................................................................................................................................ 1 Background .............................................................................................................................. 1 Objectives ................................................................................................................................. 3 Approach ................................................................................................................................... 3 2 Methods .................................................................................................................................................. 4 3 Data Analyses ........................................................................................................................................ 6 4 Results .................................................................................................................................................... 8 Physical habitat ........................................................................................................................ 8 Fish community – Bank relationships ................................................................................... 10 Decadal comparison .............................................................................................................. 18 5 Summary and Recommendations ................................................................................................... 20 References ................................................................................................................................................... 23 Unit Conversion Factors ............................................................................................................................ 25 Report Documentation Page-
dc.format.extent33 pages / 1.506 Mb-
dc.format.mediumPDF/A-
dc.language.isoen_USen_US
dc.publisherUnited States. Army. Corps of Engineers. Mississippi Valley Division.en_US
dc.publisherUnited States. Mississippi River Commission.-
dc.publisherEnvironmental Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesMRG&P Report (Mississippi River Geomorphology and Potamology Program (U.S.)) ; no. MRG&P Report No. 29-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectBenthos--Mississippi River,en_US
dc.subjectEmbankmentsen_US
dc.subjectFish populations--Mississippi Riveren_US
dc.subjectFlood controlen_US
dc.subjectRiver engineeringen_US
dc.subjectStream ecologyen_US
dc.titleComparison of benthic fish assemblages along revetted and natural banks in the Lower Mississippi River : a 30-year perspectiveen_US
dc.typeReporten_US
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