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    • 21st Annual PKP Student Research and Fine Arts Conference: Posters
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    Salty or Slightly Salty: Is Fish Species Richness affected by an obsolete navigational cut

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    Authors
    Patterson, Rebecca
    Matthews, Loren
    Reichmuth, Jessica
    Saul, Bruce
    Issue Date
    1/30/2020
    URI
    http://hdl.handle.net/10675.2/623116
    
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    Abstract
    As rivers flow toward the coast, freshwater mixes with saltwater in estuaries. The mixing here creates a wide range of environments for many organisms. The Satilla River Estuary has been cut eight times, which has altered the salinity gradients that are a result of natural tidal flow. Altered salinity gradients pose a threat to migratory fish species because they are no longer able to pick up on directional cues these gradients provide, ultimately affecting species richness in the estuary. The purpose of this study is to determine if Noyes Cut has affected salinity gradients at five collection sites in Umbrella and Dover Creeks. Experimental gill nets were set one hour before max flood tide and soaked for two hours.� All fish were identified to species with total and fork lengths measured to the nearest centimeter. Noyes Cut and Parsons Creek had the most species richness while River Marsh Landing and Todd Creek experienced the lowest diversity.� We believe these large salinity fluctuations are due to a sediment deposit that blocks water flow as a result of Noyes Cut. When Noyes Cut is closed, we expect fish to redistribute into Umbrella and Dover Creeks as a result of restored salinity gradients.�
    Affiliation
    Biological Sciences
    Biology
    Description
    Presentation given at the 21th Annual Phi Kappa Phi Student Research and Fine Arts Conference
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    21st Annual PKP Student Research and Fine Arts Conference: Posters

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