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Application of thresholds of potential concern and limits of acceptable change in the condition assessment of a significant wetland

Journal Article


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Abstract


  • We propose a framework in which thresholds of potential concern (TPCs) and limits of acceptable change (LACs) are used in concert in the assessment of wetland condition and vulnerability and apply the framework in a case study. The lower Murrumbidgee River floodplain (the 'Lowbidgee') is one of the most ecologically important wetlands in Australia and the focus of intense management intervention by State and Federal government agencies. We used a targeted management stakeholder workshop to identify key values that contribute to the ecological significance of the Lowbidgee floodplain, and identified LACs that, if crossed, would signify the loss of significance. We then used conceptual models linking the condition of these values (wetland vegetation communities, waterbirds, fish species and the endangered southern bell frog) to measurable threat indicators, for which we defined a management goal and a TPC. We applied this framework to data collected across 70 wetland storages', or eco-hydrological units, at the peak of a prolonged drought (2008) and following extensive re-flooding (2010). At the suggestion of water and wetland mangers, we neither aggregated nor integrated indices but reported separately in a series of chloropleth maps. The resulting assessment clearly identified the effect of rewetting in restoring indicators within TPC in most cases, for most storages. The scale of assessment was useful in informing the targeted and timely management intervention and provided a context for retaining and utilising monitoring information in an adaptive management context.

Authors


  •   Rogers, Kerrylee
  •   Saintilan, Neil
  •   Colloff, Matthew J. (external author)
  •   Wen, Li (external author)

Publication Date


  • 2013

Citation


  • Rogers, K., Saintilan, N., Colloff, M. J. & Wen, L. (2013). Application of thresholds of potential concern and limits of acceptable change in the condition assessment of a significant wetland. Environmental Monitoring and Assessment, 185 (10), 8583-8600.

Scopus Eid


  • 2-s2.0-84884356191

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2139&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/1121

Has Global Citation Frequency


Number Of Pages


  • 17

Start Page


  • 8583

End Page


  • 8600

Volume


  • 185

Issue


  • 10

Place Of Publication


  • Netherlands

Abstract


  • We propose a framework in which thresholds of potential concern (TPCs) and limits of acceptable change (LACs) are used in concert in the assessment of wetland condition and vulnerability and apply the framework in a case study. The lower Murrumbidgee River floodplain (the 'Lowbidgee') is one of the most ecologically important wetlands in Australia and the focus of intense management intervention by State and Federal government agencies. We used a targeted management stakeholder workshop to identify key values that contribute to the ecological significance of the Lowbidgee floodplain, and identified LACs that, if crossed, would signify the loss of significance. We then used conceptual models linking the condition of these values (wetland vegetation communities, waterbirds, fish species and the endangered southern bell frog) to measurable threat indicators, for which we defined a management goal and a TPC. We applied this framework to data collected across 70 wetland storages', or eco-hydrological units, at the peak of a prolonged drought (2008) and following extensive re-flooding (2010). At the suggestion of water and wetland mangers, we neither aggregated nor integrated indices but reported separately in a series of chloropleth maps. The resulting assessment clearly identified the effect of rewetting in restoring indicators within TPC in most cases, for most storages. The scale of assessment was useful in informing the targeted and timely management intervention and provided a context for retaining and utilising monitoring information in an adaptive management context.

Authors


  •   Rogers, Kerrylee
  •   Saintilan, Neil
  •   Colloff, Matthew J. (external author)
  •   Wen, Li (external author)

Publication Date


  • 2013

Citation


  • Rogers, K., Saintilan, N., Colloff, M. J. & Wen, L. (2013). Application of thresholds of potential concern and limits of acceptable change in the condition assessment of a significant wetland. Environmental Monitoring and Assessment, 185 (10), 8583-8600.

Scopus Eid


  • 2-s2.0-84884356191

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2139&context=smhpapers

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/1121

Has Global Citation Frequency


Number Of Pages


  • 17

Start Page


  • 8583

End Page


  • 8600

Volume


  • 185

Issue


  • 10

Place Of Publication


  • Netherlands