Synthesis of a new conceptual model to facilitate management of ephemeral deflation basin lakes

B. Gawne, O. Scholz

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Ephemeral deflation basin lakes are widespread throughout arid and semiarid regions of the Murray-Darling Basin in Australia. Although they are diverse, productive habitats, the water resources development has generally caused significant declines in their ecological condition. Managers are currently trying to protect or restore these systems, however, without an adequate theoretical framework on which to base management decisions. This is because the existing conceptual models provide little insight into the effects of any component of the flow regime except flooding. This paper reviews the effects of flooding and drying on lakes, using the information and conclusions therein to propose a conceptual model that identifies five stages in the flooding and drying cycle. This conceptual model incorporates elements of the Flood Pulse Concept, Trophic Cascade models and the Geomorphic-Trophic model, as they apply to these highly variable water systems. © 2006 Blackwell Publishing Asia Pty Ltd.
    Original languageEnglish
    Pages (from-to)177-188
    Number of pages12
    JournalLakes and Reservoirs: Research and Management
    Volume11
    Issue number3
    DOIs
    Publication statusPublished - 2006

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    deflation
    flooding
    trophic cascade
    semiarid region
    arid region
    lake basin
    lake
    habitat
    basin
    water

    Cite this

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    abstract = "Ephemeral deflation basin lakes are widespread throughout arid and semiarid regions of the Murray-Darling Basin in Australia. Although they are diverse, productive habitats, the water resources development has generally caused significant declines in their ecological condition. Managers are currently trying to protect or restore these systems, however, without an adequate theoretical framework on which to base management decisions. This is because the existing conceptual models provide little insight into the effects of any component of the flow regime except flooding. This paper reviews the effects of flooding and drying on lakes, using the information and conclusions therein to propose a conceptual model that identifies five stages in the flooding and drying cycle. This conceptual model incorporates elements of the Flood Pulse Concept, Trophic Cascade models and the Geomorphic-Trophic model, as they apply to these highly variable water systems. {\circledC} 2006 Blackwell Publishing Asia Pty Ltd.",
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    Synthesis of a new conceptual model to facilitate management of ephemeral deflation basin lakes. / Gawne, B.; Scholz, O.

    In: Lakes and Reservoirs: Research and Management, Vol. 11, No. 3, 2006, p. 177-188.

    Research output: Contribution to journalArticle

    TY - JOUR

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    AU - Gawne, B.

    AU - Scholz, O.

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    AB - Ephemeral deflation basin lakes are widespread throughout arid and semiarid regions of the Murray-Darling Basin in Australia. Although they are diverse, productive habitats, the water resources development has generally caused significant declines in their ecological condition. Managers are currently trying to protect or restore these systems, however, without an adequate theoretical framework on which to base management decisions. This is because the existing conceptual models provide little insight into the effects of any component of the flow regime except flooding. This paper reviews the effects of flooding and drying on lakes, using the information and conclusions therein to propose a conceptual model that identifies five stages in the flooding and drying cycle. This conceptual model incorporates elements of the Flood Pulse Concept, Trophic Cascade models and the Geomorphic-Trophic model, as they apply to these highly variable water systems. © 2006 Blackwell Publishing Asia Pty Ltd.

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