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National Eutrophication Management Program

The Program invested in research and development to reduce the frequency and intensity of harmful algal blooms in Australian fresh and estuarine waters, as well as raising awareness and understanding about the processes that cause these blooms to develop. Over five years, the Program identified and funded key research development gaps that covered over-arching eutrophication issues.  This research was ‘grounded’ in four focus catchments: Wilson Inlet WA, Fitzroy (Qld), Namoi NSW and Goulburn-Broken (Vic).

The program concluded in 2001, with a review finding that it had increased understanding about the causes of algal blooms, and provided a wide range of management techniques that could be practically applied.  Some of the management techniques developed through the Program included: 

  • Managing flows to reduce the stratification in the water column that promotes blue-green algal blooms.
  • Managing light penetration within waterbodies to control blue-green algal growth.
  • Using bio-manipulation to directly control concentrations and growth of blue-green algae.
  • Managing sediments in rivers, storages and estuaries so that the anoxic conditions favouring blue-green algae growth are avoided.  
  • Managing nutrients so that they are not entering river systems in ‘pulses’ and promoting algal growth. 
  • Controlling nitrogen to better manage algal blooms.
id: 3701 / created: 09 September, 2009 / last updated: 09 September, 2009