Wetland riparian vegetation structure of natural wetlands as guidelines to dredge pond rehabilitation, south-western Australia

Eddie van Etten (MiWER), Clint McCullough (MiWER), Mark Lund (MiWER), Mark Gell (KSS)

What is the vegetation structure of typical seasonal wetlands of the Kemerton region?

Silica sand mining by Kemerton Silica Sand Pty. Ltd. in the Kemerton region, south-western Australia, is followed by rehabilitation of mined lands into conservation areas after ore extraction is complete. Successful rehabilitation to a natural structure is involving first studies into what type of wetland (e.g., wetland riparian vegetation structure) is typical of the area, and hence acceptable as a rehabilitation outcome. Studies are focussing on both understanding natural wetland structure, dynamics and environmental drivers, on also on understanding how rehabilitation efforts are achieving desirable rehabilitation outcomes.

 

Photo: A typical seasonal waterbody of the Kemerton wetlands.


Photo: Dr. Eddie van Etten surveying vegetation rehabilitation success and rehabilitated slope topography and soil structure.


Figure: Topography, vegetation structure and soil structure profile of a seasonal Kemerton wetland.

Outputs

  • Van Etten, E. J. B.; McCullough, C. D. & Lund, M. A. (2014). Setting restoration goals for restoring pit lakes as aquatic ecosystems: a case study from south west Australia. Mining Technology. link
  • Van Etten, E. J. B.; McCullough, C. D. & Lund, M. A. (2011). Setting restoration goals for restoring pit lakes as aquatic ecosystems: a case study from south west Australia. Proceedings of the Eighth International Heavy Minerals Conference, Perth, Australia, 5-6 October 2011, pp. 339-350.  AusIMM, Melbourne. PDF
  • Van Etten, E. J. B.; McCullough, C. D. & Lund, M. A. (2011). Sand mining restoration on the Swan Coastal Plain using topsoil – learning from monitoring of previous rehabilitation attempts. Proceedings of the Eighth International Heavy Minerals Conference, Perth, Australia, 5-6 October 2011, pp. 323-338.  AusIMM, Melbourne. PDF
  • Van Etten, E. J. B.; McCullough, C. D. & Lund, M. A. (2012). Importance of topography and topsoil selection and storage in successfully rehabilitating post-closure sand mines featuring pit lakes. Mining Technology. 121: 139-150.link
  • van Etten, E.; McCullough, C. D. & Lund, M. A. (2009). Evaluation of rehabilitation efforts at the Kemerton Silica Sands Pty. Ltd. project area, November 2008. Report number 2009-02, Centre for Ecosystem Management/Mine Water Environment Research, Edith Cowan University, Perth, Australia. Unpublished commercial-in-confidence report to Kemerton Silica Sand Pty Ltd.
  • van Etten, E.; McCullough, C. D. & Lund, M. A. (2009). Riparian vegetation characteristics of seasonal wetlands in Kemerton, south-western Australia Report number 2008-17, Centre for Ecosystem Management/Mine Water Environment Research, Edith Cowan University, Perth, Australia. 50pp. Unpublished report to Kemerton Silica Sand Pty Ltd.


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