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  • Historical and Contemporary Fish Dispersal in Australia's Northern Rivers

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    Mills_2012_02Thesis.pdf (3.436Mb)
    Author(s)
    Mills, Courtenay E.
    Primary Supervisor
    Hughes, Jane
    Other Supervisors
    Pusey, Brad
    Hadwen, Wade
    Schmidt, Dan
    Year published
    2012
    Metadata
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    Abstract
    Riverine environments present specific barriers and challenges to dispersing fish, depending on their dispersal capability. While some barriers are obvious and finite (for example a waterfall), the subtle influences of dendritic river network structure can also affect the dispersal, and therefore the genetic structure, of freshwater fish within river catchments. In addition to these natural barriers, artificial barriers like weirs and dams can have significant effects on the flow of genes between populations in rivers. In order to achieve the effective management and conservation of populations there is a need to understand ...
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    Riverine environments present specific barriers and challenges to dispersing fish, depending on their dispersal capability. While some barriers are obvious and finite (for example a waterfall), the subtle influences of dendritic river network structure can also affect the dispersal, and therefore the genetic structure, of freshwater fish within river catchments. In addition to these natural barriers, artificial barriers like weirs and dams can have significant effects on the flow of genes between populations in rivers. In order to achieve the effective management and conservation of populations there is a need to understand dispersal and how the movement of individuals impacts populations at a variety of scales. Studies of dispersal are important for the perspective they bring to the movement and migration of individuals and the subsequent flow of genes – both temporally and geographically. It is this spread of genes that largely determines the genetic diversity of populations, which is a quality necessary for the stability and persistence of individuals and populations.
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    Thesis Type
    Thesis (PhD Doctorate)
    Degree Program
    Doctor of Philosophy (PhD)
    School
    Griffith School of Environment
    DOI
    https://doi.org/10.25904/1912/728
    Copyright Statement
    The author owns the copyright in this thesis, unless stated otherwise.
    Item Access Status
    Public
    Subject
    Fish dispersal
    Australian fish population
    Historical fish dispersal
    Contemporary fish dispersal
    Fish conservation
    Genetic markers
    Publication URI
    http://hdl.handle.net/10072/366825
    Collection
    • Theses - Higher Degree by Research

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