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Harmful algal blooms in the Australian region: changes between the 1980s and 2010s


Hallegraeff, GM, Harmful algal blooms in the Australian region: changes between the 1980s and 2010s, Proceedings of the 9th International Conference on Molluscan Shellfish Safety, 17-22 March 2013, Sydney, Australia, pp. 94-99. ISBN 978-0-646-92993-4 (2014) [Refereed Conference Paper]

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While microalgal blooms in a strict sense are completely natural phenomena [e.g. Trichodesmium cyanobacterial blooms reported in the Coral Sea by Captain Cook in 1770], since the 1980s their impacts on Australian public health, tourism, and fisheries have increased in frequency, intensity and geographic distribution. To a major extent this reflects increased scientific awareness [pinnatoxins in SA oysters]. In other cases, algal bloom problems reflect increased utilisation of coastal waters for aquaculture and fisheries [fish-killing Chattonella marina raphidophytes in Port Lincoln, dinoflagellate Dinophysis Diarrhetic Shellfish Toxins in NSW pipis, diatom Rhizosolenia amaralis causing bitter mussels in Port Philip Bay]. Eutrophication has only rarely been rarely invoked as a causative factor [dinoflagellate Karlodinium veneficum in Swan River; haptophyte Prymnesium parvum in NT barramundi ponds]. Other harmful species have been newly introduced via ship ballast water discharge [PST dinoflagellate Gymnodinium catenatum into Tasmania] or exhibit significant range expansions in relationship to climate change [Noctiluca scintillans red tides into the Southern Ocean]. Algal blooms may also pose unexpected problems for desalination plants. Heightened scientific and regulatory attention has triggered the development of many new technologies (molecular probes, remote sensing) and approaches for monitoring (continuous plankton recorder) and management of algal bloom phenomena.

Item Details

Item Type:Refereed Conference Paper
Keywords:Harmful algal blooms, fish kills, shellfish toxins, Australia
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Phycology (incl. marine grasses)
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - aquaculture
Objective Field:Fisheries - aquaculture not elsewhere classified
UTAS Author:Hallegraeff, GM (Professor Gustaaf Hallegraeff)
ID Code:96440
Year Published:2014
Deposited By:IMAS Research and Education Centre
Deposited On:2014-11-05
Last Modified:2018-04-04

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