Effects of zebra mussel (Dreissena polymorpha) invasion on the aquatic community of a great plains reservoir

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dc.contributor.author Severson, Andrea Marie
dc.date.accessioned 2010-05-11T15:42:45Z
dc.date.available 2010-05-11T15:42:45Z
dc.date.issued 2010-05-11T15:42:45Z
dc.identifier.uri http://hdl.handle.net/2097/4139
dc.description.abstract The zebra mussel is an invasive bivalve that was first confirmed in Kansas in 2003, and has decreased zooplankton abundance and altered the aquatic community in other areas where it has invaded. However, little is known about its effects on the aquatic communities of warm-water Great Plains reservoirs. We analyzed zooplankton, benthic macroinvertebrate, and juvenile and small-bodied fish abundance in the littoral zone of an Eastern Kansas reservoir with an established zebra mussel population (El Dorado Reservoir) and a control reservoir without zebra mussels (Melvern Reservoir) for two years pre-zebra mussel invasion (2001-2002) and two years post-invasion (2008-2009). We found no difference in littoral zooplankton abundance between reservoirs across time, but abundance of some macroinvertebrate taxa increased, and abundance of juvenile Lepomis spp. and red shiners decreased in the littoral zone of El Dorado Reservoir in August of the post-zebra mussel invasion period in comparison to the control reservoir. We also analyzed abundance and condition of six adult reservoir fishes in El Dorado Reservoir and three control reservoirs in Eastern Kansas for ten years pre-zebra mussel invasion (1993-2002) and five years post-invasion (2004-2008). Adult white crappie abundance remained constant in El Dorado Reservoir but decreased in the control reservoirs during the post-zebra mussel invasion period, and condition of adult bluegill, white bass, and white crappie decreased in El Dorado Reservoir in the post-zebra mussel invasion period compared to the control reservoirs. Our findings suggest that zebra mussel invasion in El Dorado Reservoir may have affected some benthic macroinvertebrates, juvenile and small-bodied fishes, and adult fishes. We did not find evidence that zebra mussels have had substantial effects on the zooplankton community of El Dorado Reservoir. However, July-August zebra mussel veliger densities in El Dorado Reservoir averaged less than 12 veligers/L in four of the six post-zebra mussel invasion years. Additional research and long-term monitoring of zooplankton, macroinvertebrates, and fishes will be necessary to determine the full effects of zebra mussels on the aquatic communities of warm-water reservoirs throughout North America. en_US
dc.description.sponsorship Kansas Department of Wildlife and Parks; Kansas State University en_US
dc.language.iso en_US en_US
dc.publisher Kansas State University en
dc.subject Invasive Species en_US
dc.subject Zooplankton en_US
dc.subject Macroinvertebrates en_US
dc.subject Fish en_US
dc.subject Kansas en_US
dc.title Effects of zebra mussel (Dreissena polymorpha) invasion on the aquatic community of a great plains reservoir en_US
dc.type Thesis en_US
dc.description.degree Master of Science en_US
dc.description.level Masters en_US
dc.description.department Department of Biology en_US
dc.description.advisor Craig Paukert en_US
dc.subject.umi Agriculture, Fisheries and Aquaculture (0792) en_US
dc.subject.umi Biology, Ecology (0329) en_US
dc.date.published 2010 en_US
dc.date.graduationmonth May en_US


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