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Mussel assemblages in a developing oxbow and a newly-cut channel of the Neosho River, Kansas

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dc.contributor.author Sherraden, Stephanie Ann.
dc.date.accessioned 2012-05-30T12:39:36Z
dc.date.available 2012-05-30T12:39:36Z
dc.date.created 2002 en_US
dc.date.issued 2012-05-30
dc.identifier.uri http://hdl.handle.net/123456789/1154
dc.description vii, 26 leaves en_US
dc.description.abstract I compared freshwater mussel assemblages (Bivalvia: Unionidae) in a developing oxbow (old channel) and a newly-cut (new) channel of the Neosho River, Neosho County, Kansas, during 2001. I sampled mussels at approximately 1.5 km intervals, totaling 19 sites in the old channel and seven sites in the new channel, by groping substrate from bank to bank in a zigzag fashion along a 100 m reach. I found 1,239 live individuals of 20 mussel species in the old channel and 20 live individuals ofsix species in the new channel. Mussel abundance, diversity, and current species richness were significantly greater in the old channel than in the new. Abundance, diversity, and historic and current species richness all declined significantly from upstream to downstream in the old channel. Historic richness was greater than current richness in the old channel, but both decreased from upstream to downstream at the same rate. Loss of historic species from the old channel was no different from that in the rest of the Neosho River in Kansas; however, a decrease in lotic species will likely occur as the channel continues to evolve into an oxbow. Canonical correspondence analysis illustrated mussel assemblage variation with environmental differences between the old and new channels, and a substrate compaction, substrate composition, and depth gradient in the old channel, including lotic species in flowing waters with sand and gravel substrate and lentic species in still waters with silt substrate. en_US
dc.language.iso en_US en_US
dc.subject Freshwater mussels-Kansas-Neosho River. en_US
dc.title Mussel assemblages in a developing oxbow and a newly-cut channel of the Neosho River, Kansas en_US
dc.type Thesis en_US
dc.college las en_US
dc.advisor David R. Edds en_US
dc.department biological sciences en_US

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