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Linking river red gum condition to hydrological change at Yanga National Park

Chapter


Abstract


  • Yanga National Park is located on the Lowbidgee f loodplain of the Murrumbidgee catchment

    (Fig. 15.1/colour plate, p. 314). It is classified as warm, persistently dry grassland under the

    modified Köpen classification system (Stern et al. 2000). It has a semi-arid climate with low

    annual rainfall and hot summers. Mean summer maximum temperatures range between

    30.9°C and 33.0°C, and mean winter minimum varies from 3.5°C to 6.8°C. Multi-year mean

    annual rainfall is 320 mm with considerable interannual variation (BOM 2008).

    Yanga National Park is renowned for its large stands of river red gum (Eucalyptus camaldulensis)

    forests and woodlands that are critical fish and waterbird habitats and refuge for biodiversity

    in arid and semi-arid Australia (Maher 1990; Kingsford and Thomas 2001; Watts et al.

    2003; Gilligan 2005). In the natural state, many of the river red gum forests in the region are

    characterised by variable and unpredictable patterns of high and low flows and water levels.

    Over the past 50–100 years, the wetlands on the Lowbidgee f loodplain have changed significantly

    from their natural state (Kingsford and Thomas 2001). The ecosystem is experiencing

    degradation due to in-stream regulation structures (e.g. dams and weirs), f lood prevention

    structures (e.g. levees), deterioration of water quality, clearing of riparian vegetation and

    grazing, and the presence of exotic species (Hillman et al. 2000). Of these factors, altered f low

    regime is believed to be an important contributor (Kingsford and Thomas 2001; Wen et al.

    2009). Major restoration effort is therefore directed to environmental water allocation aiming

    to re-establish the ecological integrity of the river-f loodplain ecosystem.

Authors


  •   Wen, Li (external author)
  •   Saintilan, Neil
  •   Rogers, Kerrylee
  •   Ling, Joanne (external author)

Publication Date


  • 2010

Citation


  • Wen, L., Saintilan, N., Rogers, K. & Ling, J. (2010). Linking river red gum condition to hydrological change at Yanga National Park. In N. Saintilan & I. Overton (Eds.), Ecosystem Response Modelling in the Murray-Darling Basin (pp. 229-241). Collingwood, Vic: CSIRO Publishing.

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/563

Book Title


  • Ecosystem Response Modelling in the Murray-Darling Basin

Start Page


  • 229

End Page


  • 241

Place Of Publication


  • Collingwood, Vic

Abstract


  • Yanga National Park is located on the Lowbidgee f loodplain of the Murrumbidgee catchment

    (Fig. 15.1/colour plate, p. 314). It is classified as warm, persistently dry grassland under the

    modified Köpen classification system (Stern et al. 2000). It has a semi-arid climate with low

    annual rainfall and hot summers. Mean summer maximum temperatures range between

    30.9°C and 33.0°C, and mean winter minimum varies from 3.5°C to 6.8°C. Multi-year mean

    annual rainfall is 320 mm with considerable interannual variation (BOM 2008).

    Yanga National Park is renowned for its large stands of river red gum (Eucalyptus camaldulensis)

    forests and woodlands that are critical fish and waterbird habitats and refuge for biodiversity

    in arid and semi-arid Australia (Maher 1990; Kingsford and Thomas 2001; Watts et al.

    2003; Gilligan 2005). In the natural state, many of the river red gum forests in the region are

    characterised by variable and unpredictable patterns of high and low flows and water levels.

    Over the past 50–100 years, the wetlands on the Lowbidgee f loodplain have changed significantly

    from their natural state (Kingsford and Thomas 2001). The ecosystem is experiencing

    degradation due to in-stream regulation structures (e.g. dams and weirs), f lood prevention

    structures (e.g. levees), deterioration of water quality, clearing of riparian vegetation and

    grazing, and the presence of exotic species (Hillman et al. 2000). Of these factors, altered f low

    regime is believed to be an important contributor (Kingsford and Thomas 2001; Wen et al.

    2009). Major restoration effort is therefore directed to environmental water allocation aiming

    to re-establish the ecological integrity of the river-f loodplain ecosystem.

Authors


  •   Wen, Li (external author)
  •   Saintilan, Neil
  •   Rogers, Kerrylee
  •   Ling, Joanne (external author)

Publication Date


  • 2010

Citation


  • Wen, L., Saintilan, N., Rogers, K. & Ling, J. (2010). Linking river red gum condition to hydrological change at Yanga National Park. In N. Saintilan & I. Overton (Eds.), Ecosystem Response Modelling in the Murray-Darling Basin (pp. 229-241). Collingwood, Vic: CSIRO Publishing.

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/563

Book Title


  • Ecosystem Response Modelling in the Murray-Darling Basin

Start Page


  • 229

End Page


  • 241

Place Of Publication


  • Collingwood, Vic