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Ecotoxicity limitations following liming and nutrient enrichment to remediate acid mine lakes

Twelve 1,200 L mesocosms at ECU have been filled with a 40mm layer of lake sediment from the bottom of the fast river-filled Lake Kepwari. This representative sediment layer has then been covered with Lake Kepwari water. Treatments have been allocated in a randomised two-way factorial design to test the effects of liming, phosphorus enrichment and combined liming and phosphorus amendment on different aspects of the AMD water chemistry, ecotoxicity and ecology.

This is a collaborative multidisciplinary project with co-supervised students at Curtin University of Technology and The University of Western Australia. The ECU team is examining water chemistry, sediment and periphyton dynamics, including the effect of liming and enhanced primary production upon dissolved heavy metal and nutrient concentrations, alkalinity and pH. Jess Sackmann is examining correlations between phytoplankton community water quality, and Luke Neil is examining the effect of different treatments on aquatic ecotoxicity between each other and over time.


Dr Clint McCullough
Curtin University of Technology, Mr Luke Neil
Associate Professor Mark Lund
Centre for Water Research, The University of Western Australia, Ms Jess Jackmann
Centre for Water Research, The University of Western Australia, Ms Anas Ghadouani
Curtin University of Technology, Dr Yuri Tsvetnenko
DCG-CSM, Mr Jim Ranville
Curtin University of Technology, Mr Louis Evans

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