• Libraries
    • Log in to:
    View Item 
    •   MSpace Home
    • Faculty of Graduate Studies (Electronic Theses and Practica)
    • FGS - Electronic Theses and Practica
    • View Item
    •   MSpace Home
    • Faculty of Graduate Studies (Electronic Theses and Practica)
    • FGS - Electronic Theses and Practica
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Mallard brood movements and wetland selection in the Canadian prairie parklands

    Thumbnail
    View/Open
    Raven_Mallard_Brood_Movements.pdf (4.052Mb)
    Date
    2004
    Author
    Raven, Garnet Harold
    Metadata
    Show full item record
    Abstract
    Nest success is the most important determinant of population growth in prairie waterfowl, and tremendous resources have been allocated to increasing nest success as part of the North American Waterfowl Management Plan. Although brood survival is also important to mallard (Anas platyrhynchos) recruitment rates, knowledge of brood ecology is severely lagging relative to nest success. My study addresses this information gap by exploring mallard brood movements and wetland selection. An increased understanding of mallard brood behaviour will allow landscape management decisions to be more considerate of brood needs, and should lead to greater recruitment. Data were collected in conjunction with the Prairie Habitat Joint Venture (PHJV) Assessment project from 15 65-km2 study areas located throughout the Canadian prairie parklands. A total of 308 mallard broods were radio-tracked from hatch until 3O-days post-hatch. Models were constructed to predict movement probability (repeated-measures logistic regression) and movement distance (ANCOVA) of broods in relation to brood age, date, and study area. A backwards-elimination procedure was used to simplify models by eliminating non-significant (P > 0.05) effects. Models also were constructed to predict wetland selection in relation to wetland permanence, cover type, width of flooded emergent vegetation, brood age, date, dominant vegetation, and percent of seasonal wetlands inundated with water. Information-theoretic techniques were used to select the best fitting models. Movement probability generally decreased with age, although results varied by hatch date and study area. Later hatched broods moved farther than early hatched broods. Permanence, cover type, the width of flooded emergent vegetation, and the dominant species of vegetation were all important predictors of wetland selection...
    URI
    http://hdl.handle.net/1993/7842
    Collections
    • FGS - Electronic Theses and Practica [25525]
    • Manitoba Heritage Theses [6063]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of MSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    Login

    Statistics

    View Usage Statistics

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV