The risk of harmful algal blooms (HABs) in the oyster-growing estuaries of New South Wales, Australia

Ajani, P; Brett, S; Krogh, M; Scanes, P; Webster, G; Armand, L

The risk of harmful algal blooms (HABs) in the oyster-growing estuaries of New South Wales, Australia

Ajani, P

Brett, S Krogh, M Scanes, P Webster, G Armand, L

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Publication Type:: Journal Article
Citation:: Environmental Monitoring and Assessment, 2013, 185 (6), pp. 5295 - 5316
Issue Date:: 2013-06-01

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Field	Value	Language
dc.contributor.author	Ajani, P https://orcid.org/0000-0001-5364-9936	en_US
dc.contributor.author	Brett, S	en_US
dc.contributor.author	Krogh, M	en_US
dc.contributor.author	Scanes, P	en_US
dc.contributor.author	Webster, G	en_US
dc.contributor.author	Armand, L	en_US
dc.date.available	2012-10-08	en_US
dc.date.issued	2013-06-01	en_US
dc.identifier.citation	Environmental Monitoring and Assessment, 2013, 185 (6), pp. 5295 - 5316	en_US
dc.identifier.issn	0167-6369	en_US
dc.identifier.uri	http://hdl.handle.net/10453/116178
dc.description.abstract	The spatial and temporal variability of potentially harmful phytoplankton was examined in the oyster-growing estuaries of New South Wales. Forty-five taxa from 31 estuaries were identified from 2005 to 2009. Harmful species richness was latitudinally graded for rivers, with increasing number of taxa southward. There were significant differences (within an estuary) in harmful species abundance and richness for 11 of 21 estuaries tested. Where differences were observed, these were predominately due to species belonging to the Pseudo-nitzschia delicatissima group, Dinophysis acuminata, Dictyocha octonaria and Prorocentrum cordatum with a consistent upstream versus downstream pattern emerging. Temporal (seasonal or interannual) patterns in harmful phytoplankton within and among estuaries were highly variable. Examination of harmful phytoplankton in relation to recognised estuary disturbance measures revealed species abundance correlated to estuary modification levels and flushing time, with modified, slow flushing estuaries having higher abundance. Harmful species richness correlated with bioregion, estuary modification levels and estuary class, with southern, unmodified lakes demonstrating greater species density. Predicting how these risk taxa and risk zones may change with further estuary disturbance and projected climate warming will require more focused, smaller scale studies aimed at a deeper understanding of species-specific ecology and bloom mechanisms. Coupled with this consideration, there is an imperative for further taxonomic, ecological and toxicological investigations into poorly understood taxa (e.g. Pseudo-nitzschia). © 2012 Springer Science+Business Media Dordrecht.	en_US
dc.relation.ispartof	Environmental Monitoring and Assessment	en_US
dc.relation.isbasedon	10.1007/s10661-012-2946-9	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Animals	en_US
dc.subject.mesh	Phytoplankton	en_US
dc.subject.mesh	Dinoflagellida	en_US
dc.subject.mesh	Diatoms	en_US
dc.subject.mesh	Risk Assessment	en_US
dc.subject.mesh	Environmental Monitoring	en_US
dc.subject.mesh	Water Pollution	en_US
dc.subject.mesh	New South Wales	en_US
dc.subject.mesh	Ostreidae	en_US
dc.subject.mesh	Harmful Algal Bloom	en_US
dc.subject.mesh	Estuaries	en_US
dc.subject.mesh	Spatio-Temporal Analysis	en_US
dc.title	The risk of harmful algal blooms (HABs) in the oyster-growing estuaries of New South Wales, Australia	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.citation.volume	185	en_US
utslib.for	MD Multidisciplinary	en_US
utslib.for	070404 Fish Pests and Diseases	en_US
utslib.for	060205 Marine and Estuarine Ecology (incl. Marine Ichthyology)	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	closed_access
pubs.issue	6	en_US
pubs.publication-status	Published	en_US
pubs.volume	185	en_US

Abstract:

The spatial and temporal variability of potentially harmful phytoplankton was examined in the oyster-growing estuaries of New South Wales. Forty-five taxa from 31 estuaries were identified from 2005 to 2009. Harmful species richness was latitudinally graded for rivers, with increasing number of taxa southward. There were significant differences (within an estuary) in harmful species abundance and richness for 11 of 21 estuaries tested. Where differences were observed, these were predominately due to species belonging to the Pseudo-nitzschia delicatissima group, Dinophysis acuminata, Dictyocha octonaria and Prorocentrum cordatum with a consistent upstream versus downstream pattern emerging. Temporal (seasonal or interannual) patterns in harmful phytoplankton within and among estuaries were highly variable. Examination of harmful phytoplankton in relation to recognised estuary disturbance measures revealed species abundance correlated to estuary modification levels and flushing time, with modified, slow flushing estuaries having higher abundance. Harmful species richness correlated with bioregion, estuary modification levels and estuary class, with southern, unmodified lakes demonstrating greater species density. Predicting how these risk taxa and risk zones may change with further estuary disturbance and projected climate warming will require more focused, smaller scale studies aimed at a deeper understanding of species-specific ecology and bloom mechanisms. Coupled with this consideration, there is an imperative for further taxonomic, ecological and toxicological investigations into poorly understood taxa (e.g. Pseudo-nitzschia). © 2012 Springer Science+Business Media Dordrecht.

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http://hdl.handle.net/10453/116178