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Research

IMAS Technical Report​ ​January 2017

The attached Institute of Marine and Antarctic Studies (IMAS) Technical Report, Environmental Research in Macquarie Harbour - Interim Synopsis of Benthic and Water Column Conditions January 2017, was prepared by Dr Jeff Ross and Associate Professor Catriona MacLeod at the EPA Director’s request in November 2016. The three salmon companies were advised that this report would be made publicly available as soon as it had been finalised and cleared by the University of Tasmania (UTAS). The report is both comprehensive and technical, and before being made publicly available, was subject to a UTAS internal review process that ensures reports and publications meet appropriate research and academic standards. In addition, the report references externally funded research projects and therefore other research organisations needed to sign off on certain aspects of the report. These are important steps in the preparation of scientific material, and take time to complete. This report forms part of the information that the Director considered when making the biomass determination for the period from 14 February to 30 April 2017.

Download a copy of the IMAS Technical Report on Macquarie Harbour Condition here.

Draft Macquarie Harbour Nutrient Review, May 2017

The Mount Lyell Remediation Research and Development Program, a long term monitoring program, was established in 1995. The attached internal draf EPA report, May 2017 has reviewed the nutrient data from 2013 onwards, and also includes those sites where there is historic data for the period 1995 to 1997. The Review found that some total and dissolved nutrient levels have increased in Macquarie Harbour when considering historic and current water quality data. The levels observed in the central Harbour infer that additional nutrient inputs other than those entering from the Gordon River or marine waters, are occurring. IMAS is undertaking several Fisheries Research and Development Corporation (FRDC) programs to assess biological impacts, as are the individual companies as part of compliance requirements and adaptive management framework. 

Download a copy of the Macquarie Harbour 2013-2016 Nutrient Review, Internal Draft EPA Report, May 2017 here.

Macquarie Harbour WHA Environmental Status Report, May 2017

Approximately one third of the area of Macquarie Harbour is located within the boundary of the Tasmanian Wilderness World Heritage Area (TWWHA). With the expansion of marine farming in Macquarie Harbour there has been an increase in environmental monitoring under marine farm licence requirements and research studies in response to deterioration in the environmental condition of the Harbour. A Report on the recent monitoring and research findings relevant to the WHA has been prepared to support the decision making process of the EPA Director, and to provide advice to the Minister for Parks, Environment and Heritage about impacts on the WHA.

Download a copy of the Macquarie Harbour Tasmanian Wilderness World Heritage Area Environmental Status Report, May 2017 here.

IMAS Environmental Research Progress Report May 2017

The May 2017 Progress Report, Environmental Research in Macquarie Harbour, produced by IMAS, University of Tasmania, provides an update on the status of dissolved oxygen and bethic conditions in Macquarie Harbour. It follows on from the results reported in the IMAS January 2017 Report and presents the results and preliminary interpretation of oxygen monitoring data up until the end of March 2017, and a repeat survey of benthic communities in Jan-Feb 2017.

IMAS Environmental Research Progress Report September 2017

The September 2017 Progress Report, Environmental Research in Macquarie Harbour, produced by IMAS, University of Tasmania, provides an update on the status of dissolved oxygen and benthic conditions in Macquarie Harbour. It follows on from the results reported in the IMAS January and May 2017 Reports and presents the results and preliminary interpretation of oxy​gen monitoring data up until the end of August 2017, a repeat survey of benthic communities in May/June 2017 and findings from CSIRO’s oxygen tracer modelling. ​