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dc.contributor.authorHazelton, Peter Donald
dc.date.accessioned2014-03-04T16:21:05Z
dc.date.available2014-03-04T16:21:05Z
dc.date.issued2008-12
dc.identifier.otherhazelton_peter_d_200812_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/hazelton_peter_d_200812_ms
dc.identifier.urihttp://hdl.handle.net/10724/25194
dc.description.abstractIncreased stream turbidity and biological invasions are two important challenges affecting native fish assemblages in the southeast United States. I examined the effects of turbidity and velocity on competition for food and foraging positions in a native (rosyside dace, Clinostomus funduloides) – introduced (yellowfin shiner, Notropis lutipinnis) interaction. Previous research in our lab has shown that elevated turbidity has a negative effect on the reactive distance and foraging success of C. funduloides, and that N. lutipinnis is a more successful competitor at low current velocities in non-turbid conditions. I compared foraging success, reactive distance, movement, holding position and aggression rates among intra and interspecific groups of competitors at two densities (2 & 4 fish), three turbidity levels (10, 20, & 30 NTU), 12 & 20 cm/sec velocity, and spring temperatures (10-12°C). I found that both environmental and social variables are needed to best predict changes in foraging behavior of both species.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectturbidity
dc.subjectsuspended sediment
dc.subjectforaging success
dc.subjectminnows
dc.subjectcyprinidae
dc.subjectrosyside dace
dc.subjectyellowfin shiner
dc.subjectclinostomus funduloides
dc.subjectnotropis lutipinnis
dc.titleEffects of turbidity, velocity and competition on foraging behavior of two southeastern minnows
dc.typeThesis
dc.description.degreeMS
dc.description.departmentDaniel B. Warnell School of Forestry and Natural Resources
dc.description.majorForest Resources
dc.description.advisorGary D. Grossman
dc.description.committeeGary D. Grossman
dc.description.committeeJames Peterson
dc.description.committeeC. Rhett Jackson


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