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Copper Speciation Report

Author: CSIRO (Drs N. Rogers S. Apte and J. Stauber) and Wetlands Research and Management P/L (Dr A. Storey)

Date: May 2005

The specific objectives of this study were to: evaluate and report on all previous copeer toxicity work undertaken in the Fly River system; evaluate routine bioassay and copper speciation data collected by OTML since the commencement of the Regime; review relevant recent literature information on copper toxicity to freshwater aquatic organisms; use the findings of OTML's food-web studies to develop an understanding of the potential toxic impacts of copper on Fly River biological communities (including the effect of copper toxicity in primary carbon production); and recommend future studies required to asess the effects of bioavailable copper on Fly River aquatic organisms.