A sediment budget for a cultivated floodplain in tropical North Queensland, Australia

F Visser, C Roth, Robert Wasson, G Govers

    Research output: Contribution to journalArticleResearchpeer-review

    Abstract

    Sugarcane is grown on the floodplains of northern Queensland adjacent to the Great Barrier Reef lagoon. Sediment and nutrient loss from these sugarcane areas is considered a potential threat to coastal and marine ecosystems. To enable sugarcane cultivation, farmers have structured the landscape into different elements, comprising fields, water furrows, 'headlands' and drains. In order to apply appropriate management of the landscape and reduce export of sediment, it is important to identify which of these elements act as sediment sources or sinks. In this study erosion and deposition rates were measured for the different landscape elements in a subcatchment of the Herbert River and used to create a sediment budget, Despite large uncertainties, the budget shows that the floodplain area is a net source of sediment. Estimated sediment export varies between 2 and 5 t ha-1 y-1. The relative importance of the landscape elements as sediment sources could also be determined. Plant cane is identified as the most important sediment source. Water furrows generate most sediment, but are a less important source of exported sediment due to their low connectivity. Head-lands and minor drains act as sediment traps. Copyright � 2007 John Wiley & Sons, Ltd.
    Original languageEnglish
    Pages (from-to)1475-1490
    Number of pages16
    JournalEarth Surface Processes and Landforms
    Volume32
    Issue number10
    Publication statusPublished - 2007

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    sediment budget
    floodplain
    budget
    sediment
    water
    erosion
    drain
    farmer
    river
    uncertainty
    threat
    nutrient loss
    management
    sediment trap
    barrier reef
    marine ecosystem
    connectivity
    lagoon

    Cite this

    Visser, F ; Roth, C ; Wasson, Robert ; Govers, G. / A sediment budget for a cultivated floodplain in tropical North Queensland, Australia. In: Earth Surface Processes and Landforms. 2007 ; Vol. 32, No. 10. pp. 1475-1490.
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    title = "A sediment budget for a cultivated floodplain in tropical North Queensland, Australia",
    abstract = "Sugarcane is grown on the floodplains of northern Queensland adjacent to the Great Barrier Reef lagoon. Sediment and nutrient loss from these sugarcane areas is considered a potential threat to coastal and marine ecosystems. To enable sugarcane cultivation, farmers have structured the landscape into different elements, comprising fields, water furrows, 'headlands' and drains. In order to apply appropriate management of the landscape and reduce export of sediment, it is important to identify which of these elements act as sediment sources or sinks. In this study erosion and deposition rates were measured for the different landscape elements in a subcatchment of the Herbert River and used to create a sediment budget, Despite large uncertainties, the budget shows that the floodplain area is a net source of sediment. Estimated sediment export varies between 2 and 5 t ha-1 y-1. The relative importance of the landscape elements as sediment sources could also be determined. Plant cane is identified as the most important sediment source. Water furrows generate most sediment, but are a less important source of exported sediment due to their low connectivity. Head-lands and minor drains act as sediment traps. Copyright � 2007 John Wiley & Sons, Ltd.",
    keywords = "Crops, Cultivation, Ecosystems, Erosion, Nutrients, Rivers, Erosion rate, Sediment export, Subcatchment, Sediment transport, catchment, deposition, erosion rate, floodplain, humid tropics, sediment budget, sugar cane, Australasia, Australia, Herbert River, Queensland",
    author = "F Visser and C Roth and Robert Wasson and G Govers",
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    Visser, F, Roth, C, Wasson, R & Govers, G 2007, 'A sediment budget for a cultivated floodplain in tropical North Queensland, Australia', Earth Surface Processes and Landforms, vol. 32, no. 10, pp. 1475-1490.

    A sediment budget for a cultivated floodplain in tropical North Queensland, Australia. / Visser, F; Roth, C; Wasson, Robert; Govers, G.

    In: Earth Surface Processes and Landforms, Vol. 32, No. 10, 2007, p. 1475-1490.

    Research output: Contribution to journalArticleResearchpeer-review

    TY - JOUR

    T1 - A sediment budget for a cultivated floodplain in tropical North Queensland, Australia

    AU - Visser, F

    AU - Roth, C

    AU - Wasson, Robert

    AU - Govers, G

    PY - 2007

    Y1 - 2007

    N2 - Sugarcane is grown on the floodplains of northern Queensland adjacent to the Great Barrier Reef lagoon. Sediment and nutrient loss from these sugarcane areas is considered a potential threat to coastal and marine ecosystems. To enable sugarcane cultivation, farmers have structured the landscape into different elements, comprising fields, water furrows, 'headlands' and drains. In order to apply appropriate management of the landscape and reduce export of sediment, it is important to identify which of these elements act as sediment sources or sinks. In this study erosion and deposition rates were measured for the different landscape elements in a subcatchment of the Herbert River and used to create a sediment budget, Despite large uncertainties, the budget shows that the floodplain area is a net source of sediment. Estimated sediment export varies between 2 and 5 t ha-1 y-1. The relative importance of the landscape elements as sediment sources could also be determined. Plant cane is identified as the most important sediment source. Water furrows generate most sediment, but are a less important source of exported sediment due to their low connectivity. Head-lands and minor drains act as sediment traps. Copyright � 2007 John Wiley & Sons, Ltd.

    AB - Sugarcane is grown on the floodplains of northern Queensland adjacent to the Great Barrier Reef lagoon. Sediment and nutrient loss from these sugarcane areas is considered a potential threat to coastal and marine ecosystems. To enable sugarcane cultivation, farmers have structured the landscape into different elements, comprising fields, water furrows, 'headlands' and drains. In order to apply appropriate management of the landscape and reduce export of sediment, it is important to identify which of these elements act as sediment sources or sinks. In this study erosion and deposition rates were measured for the different landscape elements in a subcatchment of the Herbert River and used to create a sediment budget, Despite large uncertainties, the budget shows that the floodplain area is a net source of sediment. Estimated sediment export varies between 2 and 5 t ha-1 y-1. The relative importance of the landscape elements as sediment sources could also be determined. Plant cane is identified as the most important sediment source. Water furrows generate most sediment, but are a less important source of exported sediment due to their low connectivity. Head-lands and minor drains act as sediment traps. Copyright � 2007 John Wiley & Sons, Ltd.

    KW - Crops

    KW - Cultivation

    KW - Ecosystems

    KW - Erosion

    KW - Nutrients

    KW - Rivers

    KW - Erosion rate

    KW - Sediment export

    KW - Subcatchment

    KW - Sediment transport

    KW - catchment

    KW - deposition

    KW - erosion rate

    KW - floodplain

    KW - humid tropics

    KW - sediment budget

    KW - sugar cane

    KW - Australasia

    KW - Australia

    KW - Herbert River

    KW - Queensland

    M3 - Article

    VL - 32

    SP - 1475

    EP - 1490

    JO - Earth Surface Processes and Landforms

    JF - Earth Surface Processes and Landforms

    SN - 0197-9337

    IS - 10

    ER -