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

Citation

Ross, J and Wild-Allen, K and Andrewartha, J and Beard, J and Moreno, D, Understanding oxygen dynamics and the importance for benthic recovery in Macquarie Harbour - Progress Report, Institute for Marine and Antarctic Studies, University of Tasmania, Australia, FRDC 2016/067, February (2020) [Government or Industry Research]


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Abstract

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 through 2017 - 2019. 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 January 2019 report we noted that the decline in oxygen levels in Spring 2018 wasnít as low as observed in the previous two springs and didnít continue for as long. Faunal abundance and diversity was less affected as a result. This report presents the results and preliminary interpretation of a repeat survey of benthic communities in June 2019 and DO monitoring data up until November 2019.

Item Details

Item Type:Government or Industry Research
Keywords:dissolved oxygen, benthic conditions, Macquarie Harbour
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Aquaculture
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Aquaculture fin fish (excl. tuna)
UTAS Author:Ross, J (Associate Professor Jeff Ross)
UTAS Author:Beard, J (Mr Jason Beard)
UTAS Author:Moreno, D (Mr David Moreno)
ID Code:138603
Year Published:2020
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2020-04-17
Last Modified:2020-04-20
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