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    Decomposition of eucalypt litter on rehabilitated bauxite mines

    19029_downloaded_stream_121.pdf (380.2Kb)
    Access Status
    Open access
    Authors
    Ward, S.
    Majer, Jonathan
    O'Connell, A.
    Date
    1991
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ward, S.C. and Majer, J.D. and O'Connell, A.M.. 1991. Decomposition of eucalypt litter on rehabilitated bauxite mines. Australian Journal of Ecology 16: 251-257.
    Source Title
    Australian Journal of Ecology
    Additional URLs
    http://www.blackwellpublishing.com/permis.asp?ref=1442-9985
    Faculty
    Division of Resources and Environment
    Muresk Institute
    Department of Environmental Biology
    Remarks

    S.C. Ward, J.D. Majer, A.M. O'Connell (1991) Decomposition of eucalypt litter on rehabilitated bauxite mines, Australian Journal of Ecology, v.16, pp.251-257.

    Blackwell Publishing Ltd. Reproduced with permission.

    URI
    http://hdl.handle.net/20.500.11937/34677
    Collection
    • Curtin Research Publications
    Abstract

    The initiation of nutrient cycling is important in developing a self-sustaining ecosystem, where inputs of fertilizer are not required, on rehabilitated open-cut mines. The loss of dry weight, surface area and nutrients from senescent jarrah (Eucalyptus marginata) leaves enclosed in litterbags for 18 months were measured on 27 rehabilitated bauxite mines and in two jarrah forests on the Darling Plateau in Western Australia. Respiration and acetylene reduction by the litter were also determined. Linear trends were found between litter decomposition on rehabilitated mines and understorey cover density, litter cover and a measure of the effect of the revegetation on soil moisture. During decomposition, N was retained relative to litter dry weight and, in most cases, amounts of N increased. Losses of Ca and S were correlated with dry weight losses. Sodium, Cl, Mg and K were lost from the litter by leaching. Rehabilitation techniques, including sowing a legume understorey and replacement of the topsoil, should favour the development of nutrient cycling on mined areas.

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