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    Habitat Alteration By Hydrilla And Its Effect On Macroinvertebrate Community Structure And Bluegill Foraging Efficiency

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    etd-03232007-083154.pdf (1.080 Mb )
    Author
    Theel, Heather J.
    Item Type
    Thesis
    Advisor
    Dibble, Eric D.
    Committee
    Madsen, John D.
    D'Abramo, Louis R.
    Metrics
    
    Abstract
    Exotic invasive plant species can alter aquatic habitats potentially influencing the macroinvertebrate community and foraging fishes. Therefore, I investigated the hypothesis that Hydrilla verticillata will alter habitat important to macroinvertebrate community structure and bluegill foraging efficiency. Studies were conducted in ponds and aquaria. At the pond level, macroinvertebrate abundance, richness, and biomass in a hydrilla-dominated habitat did not differ significantly from a diverse plant habitat. Indicator taxa did differ significantly between respective treatments. The data suggest hydrilla beds may not provide increased macroinvertebrate abundance and richness compared to diverse plant beds as previously thought. In aquaria, habitat complexity (Ihv) and light transmittance were influenced by increasing the homogeneity of hydrilla in an aquatic bed habitat. In addition, bluegill foraging efficiency was affected negatively by increasing spatial complexity of a hydrilla dominated habitat. Therefore, a shift to a monotypic hydrilla habitat can alter macroinvertebrate community composition and impact bluegill foraging success.
    Degree
    Master of Science
    Major
    Wildlife and Fisheries Science
    College
    College of Forest Resources
    Department
    Department of Wildlife and Fisheries.
    URI
    https://hdl.handle.net/11668/17306
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    Mississippi State University Libraries
    395 Hardy Rd
    P.O. Box 5408, Mississippi State, MS 39762-5408
    (662) 325-7668
    (662) 325-0011
    (662) 325-8183
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    Mississippi State University Libraries
    395 Hardy Rd
    P.O. Box 5408, Mississippi State, MS 39762-5408
    (662) 325-7668
    (662) 325-0011
    (662) 325-8183
    Contact repository admin Report a problem Terms of use Privacy policy Accessibility MSU Legal