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Research

​​​​​​​​2018 Reports

  • IMAS Environmental Research Progress Report, December 2018
  • IMAS Environmental Research Progress Report, June 2018
  • IMAS Environmental Research Progress Report February 2018​

​2017 Reports

  • IMA​S Environmental Research Progress Report September 2017
  • Draft Macquarie Harbour Nutrient Review, May 2017
  • Macquarie Harbour WHA Environmental Status Report, May 2017
  • IMAS Environmental Research Progress Report, May 2017
  • IMAS Technical Report, January 2017​​​

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IMAS Environmental Research Progress Report December 2018

The December ​2018 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 outlined in the IMAS reports released in January, May, September 2017 and February and June 2018. These reports described a deterioration of benthic and water column conditions in Macquarie Harbour in spring 2016, early signs of faunal recovery observed in May 2017 and a subsequent decline in benthic conditions in spring 2017 when oxygen concentrations in middle and bottom waters returned to very low levels. In the June 2018 report we highlighted that oxygen concentrations in the middle and bottom waters improved through the summer of 2017/18 due to recharge events that commenced in late spring 2017. 

This report presents the results and preliminary interpretation of a repeat survey of benthic communities in June 2018 and DO monitoring data up until the beginning of October 2018.

  IMAS Progress Report on Macquarie Harbour, December 2018   (6Mb)​

​IMAS Environmental Research Progress Report, June 2018

The June 2018 Progress Repor​t, 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 outlined in the IMAS reports released in January, May, September 2017 and February 2018. These reports described a deterioration of benthic and water column conditions in Macquarie Harbour in spring 2016, early signs of faunal recovery observed in May 2017 and a subsequent decline in benthic conditions in spring 2017 when oxygen concentrations in middle and bottom waters returned to very low levels. Oxygen concentrations in the middle and bottom waters have since improved through the summer of 2017/18 due to recharge events that commenced in late spring 2017. 

This report presents the results and preliminary interpretation of a repeat survey of benthic communities in January 2018 and DO monitoring data up until the beginning of May 2018.

  IMAS Report on Macquarie Harbour, June 2018   (3Mb)

IMAS Environmental Research Progress Report, February 2018

The February 2018​ 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 reports released in January, May and September 2017 which described a deterioration of benthic and water column conditions in Macquarie Harbour in spring 2016 and some early signs of faunal recovery observed in May 2017. 

This report presents the results and preliminary interpretation of DO monitoring data up until the beginning of January 2018 and a repeat survey of benthic communities in October 2017.​

  IMAS Progress Report on Macquarie Harbour, February 2018   (2Mb)

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. ​

  IMAS Progress Report on Macquarie Harbour, September 2017   (3Mb)


​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 internal draft 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. 

  Macquarie Harbour 2013-2016 Nutrient Review, Internal Draft EPA Report, May 2017   (2Mb)

​​​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.

  Macquarie Harbour TWWHA Environmental Status Report, EPA, May 2017   (1Mb)

​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 Progress ​Report on Macquarie Harbour FRDC 2016/067, May 2017   (5Mb)

IMAS Technical Report,​ ​January 2017​

The 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.

   IMAS Technical Rep​ort on Macquarie Harbour Condition   (4Mb)