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Understanding oxygen dynamics and the importance for benthic recovery in Macquarie Harbour - Progress report

report
posted on 2023-05-25, 19:27 authored by Donald RossDonald Ross, Wild-Allen, K, Andrewartha, J, Jason Beard, David MorenoDavid Moreno, Catriona MacLeodCatriona MacLeod
This report provides an ongoing update on the status of dissolved oxygen (DO) and benthic conditions in Macquarie Harbour. It follows on from the results previously outlined in the IMAS reports released throughout 2017 and 2018. These reports first described the deterioration of benthic and water column conditions in spring 2016, early signs of faunal recovery in the following autumn, when oxygen levels had improved, and the subsequent decline in benthic conditions when oxygen concentrations in middle and bottom waters returned to very low levels in spring 2017. In the most recent report we described a continuation of this cycle; an increase in faunal numbers in mid-2018 following improved oxygen concentrations in the middle and bottom waters through the summer of 2017/18. This report presents the results and preliminary interpretation of a repeat survey of benthic communities in January 2019 and DO monitoring data up until late May 2019.

Funding

Fisheries Research & Development Corporation

Tasmanian Salmonid Growers Association

History

Commissioning body

Institute for Marine and Antarctic Studies, University of Tasmania

Volume

FRDC 2016/067

Issue

July

Pagination

28

Department/School

Institute for Marine and Antarctic Studies

Publisher

Institute for Marine and Antarctic Studies, University of Tasmania

Place of publication

Australia

Repository Status

  • Restricted

Socio-economic Objectives

Aquaculture fin fish (excl. tuna); Measurement and assessment of estuarine water quality; Assessment and management of terrestrial ecosystems

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