Long term monitoring of photosystem II herbicides – Correlation with remotely sensed freshwater extent to monitor changes in the quality of water entering the Great Barrier Reef, Australia

Kennedy, Karen, Schroeder, Thomas, Shaw, Melanie, Haynes, David, Lewis, Stephen, Bentley, Christie, Paxman, Chris, Carter, Steve, Brando, Vittorio, Bartkow, Michael, Hearn, Laurence and Mueller, Jochen F. (2012) Long term monitoring of photosystem II herbicides – Correlation with remotely sensed freshwater extent to monitor changes in the quality of water entering the Great Barrier Reef, Australia. Marine Pollution Bulletin, 65 4-9: 292-305. doi:10.1016/j.marpolbul.2011.10.029


Author Kennedy, Karen
Schroeder, Thomas
Shaw, Melanie
Haynes, David
Lewis, Stephen
Bentley, Christie
Paxman, Chris
Carter, Steve
Brando, Vittorio
Bartkow, Michael
Hearn, Laurence
Mueller, Jochen F.
Title Long term monitoring of photosystem II herbicides – Correlation with remotely sensed freshwater extent to monitor changes in the quality of water entering the Great Barrier Reef, Australia
Journal name Marine Pollution Bulletin   Check publisher's open access policy
ISSN 0025-326X
1879-3363
Publication date 2012
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.marpolbul.2011.10.029
Volume 65
Issue 4-9
Start page 292
End page 305
Total pages 14
Place of publication Oxford, United Kingdom
Publisher Elsevier
Collection year 2012
Language eng
Formatted abstract
Photosystem II (PSII) herbicides are used in large quantities on agricultural lands adjoining the Great Barrier Reef (GBR). Routine monitoring at 14 sites in inshore waters of the GBR using passive sampling techniques detected diuron (32–94% of sampling periods) at maximum concentrations of 1.7–430 ng L-1 in the relatively pristine Cape York Region to the Mackay Whitsunday Region, respectively. A PSII herbicide equivalent (PSII-HEq) index developed as an indicator for reporting was dominated by diuron (average contribution 89%) and typically increased during the wet season. The maximum PSII-HEq indicates the potential for photosynthetic inhibition of diatoms, seagrass and coral-symbionts. PSII herbicides were significantly positively correlated with remotely sensed coloured dissolved organic matter, a proxy for freshwater extent. Combining these methods provides for the first time the potential to cost-effectively monitor improvements in water quality entering the GBR with respect to exposure to PSII herbicides.
Keyword Passive sampling
Diuron
Coloured dissolved organic matter
MODIS
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 9 December 2011. Special Issue: The Catchment to Reef Continuum: Case studies from the Great Barrier Reef

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
National Research Centre for Environmental Toxicology Publications
 
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Created: Thu, 22 Mar 2012, 10:50:49 EST by Robyne Anderson on behalf of National Res Centre For Environmental Toxicology