Assessing the additive risks of PSII herbicide exposure to the Great Barrier Reef

Lewis, Stephen E., Schaffelke, Britta, Shaw, Melanie, Bainbridge, Zoë T., Rohde, Ken W., Kennedy, Karen, Davis, Aaron M., Masters, Bronwyn L., Devlin, Michelle J., Mueller, Jochen F. and Brodie, Jon E. (2012) Assessing the additive risks of PSII herbicide exposure to the Great Barrier Reef. Marine Pollution Bulletin, 65 4-9: 280-291.


Author Lewis, Stephen E.
Schaffelke, Britta
Shaw, Melanie
Bainbridge, Zoë T.
Rohde, Ken W.
Kennedy, Karen
Davis, Aaron M.
Masters, Bronwyn L.
Devlin, Michelle J.
Mueller, Jochen F.
Brodie, Jon E.
Title Assessing the additive risks of PSII herbicide exposure to the Great Barrier Reef
Journal name Marine Pollution Bulletin  (ERA 2012 Listed)    (ERA 2010 Rank B)   Check publisher's open access policy
Publication date 2012
Sub-type Article
Year available 2011
DOI 10.1016/j.marpolbul.2011.11.009
Volume number 65
Issue number 4-9
ISSN 0025-326X;1879-3363
Start page 280
End page 291
Total pages 12
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2012
Language eng
Abstract Herbicide residues have been measured in the Great Barrier Reef lagoon at concentrations which have the potential to harm marine plant communities. Monitoring on the Great Barrier Reef lagoon following wet season discharge show that 80% of the time when herbicides are detected, more than one are present. These herbicides have been shown to act in an additive manner with regards to photosystem-II inhibition. In this study, the area of the Great Barrier Reef considered to be at risk from herbicides is compared when exposures are considered for each herbicide individually and also for herbicide mixtures. Two normalisation indices for herbicide mixtures were calculated based on current guidelines and PSII inhibition thresholds. The results show that the area of risk for most regions is greatly increased under the proposed additive PSII inhibition threshold and that the resilience of this important ecosystem could be reduced by exposure to these herbicides.
Keyword Additive risk
Great Barrier Reef
Mixture toxicity
Photosystem II herbicides
Risk assessment
Toxicity index
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online: 14 December 2011.

Document type: Journal Article
Sub-type: Article
Collections: Official 2012 Collection
National Research Centre for Environmental Toxicology Publications
 
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Created: Thu, 22 Mar 2012, 10:56:05 EST by Robyne Anderson on behalf of National Res Centre For Environmental Toxicology