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  • Biotic processes in a coastal dunefield: An assessment of seed removal, with non-native seed removal experiments.

    Author(s)
    Castley, JG
    Kerley, GIH
    McLachlan, A
    Griffith University Author(s)
    Castley, Guy G.
    Year published
    2001
    Metadata
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    Abstract
    The impact of granivores on coastal dune seed reserves may be high, increasing along a landward gradient from the littoral zone as the structural complexity of the habitat increases. Seasonal removal rates of non-native seeds by nocturnal and diurnal vertebrates and ants from experimental seed trays in two habitats within the Alexandria Coastal Dunefield, South Africa, were determined. Overall, seed removal was higher in the dune-field bush-pocket habitat than the landward thicket habitat. Nocturnal vertebrates were the most important seed removers within bush-pockets. The importance of nocturnal vertebrates decreased in the ...
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    The impact of granivores on coastal dune seed reserves may be high, increasing along a landward gradient from the littoral zone as the structural complexity of the habitat increases. Seasonal removal rates of non-native seeds by nocturnal and diurnal vertebrates and ants from experimental seed trays in two habitats within the Alexandria Coastal Dunefield, South Africa, were determined. Overall, seed removal was higher in the dune-field bush-pocket habitat than the landward thicket habitat. Nocturnal vertebrates were the most important seed removers within bush-pockets. The importance of nocturnal vertebrates decreased in the thicket and there was a shift in the dominant seed removers to diurnal vertebrates. Seed removal by ants and diurnal vertebrates did not differ significantly between the bush-pockets and thicket while that of nocturnal vertebrates showed a significant change. This can be ascribed to the abundance of the omnivorous murid rodentGerbillurus paeba exilis in the bush-pockets which is absent from thicket vegetation.
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    Journal Title
    Journal of Coastal Conservation
    Volume
    7
    Issue
    1
    DOI
    https://doi.org/10.1007/BF02742467
    Subject
    Earth sciences
    Environmental sciences
    Publication URI
    http://hdl.handle.net/10072/59130
    Collection
    • Journal articles

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