The influence of a season of extreme wet weather events on exposure of the World Heritage Area Great Barrier Reef to pesticides

Kennedy, Karen, Devlin, Michelle, Bentley, Christie, Lee-Chue, Kristie, Paxman, Chris, Carter, Steve, Lewis, Stephen, Brodie, Jon, Guy, Ellia, Vardy, Suzanne, Martin, Katherine C., Jones, Alison, Packett, Robert, and Mueller, Jochen F. (2012) The influence of a season of extreme wet weather events on exposure of the World Heritage Area Great Barrier Reef to pesticides. Marine Pollution Bulletin, 64 (7). pp. 1495-1507.

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Abstract

The 2010-2011 wet season was one of extreme weather for the State of Queensland, Australia. Major rivers adjacent to the Great Barrier Reef (GBR) were discharging at rates 1.5 to >3 times higher than their long term median. Exposure to photosystem II herbicides has been routinely monitored over a period of up to 5 years at 12 inshore GBR sites. The influence of this wet season on exposure to photosystem II herbicides was examined in the context of this long-term monitoring record and during flood plume events in specific regions. Median exposures expressed as diuron equivalent concentration were an average factor of 2.3 times higher but mostly not significantly different (p < 0.05) to the median for the long-term monitoring record. The herbicides metolachlor and tebuthiuron were frequently detected in flood plume waters at concentrations that reached or exceeded relevant water quality guidelines (by up to 4.5 times).

Item ID: 23530
Item Type: Article (Research - C1)
ISSN: 1879-3363
Keywords: photosystem II herbicides, passive sampling, freshwater discharge, long term monitoring
Funders: Australian Research Council (ARC)
Date Deposited: 03 Oct 2012 05:34
FoR Codes: 05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050206 Environmental Monitoring @ 50%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050205 Environmental Management @ 50%
SEO Codes: 96 ENVIRONMENT > 9611 Physical and Chemical Conditions of Water > 961102 Physical and Chemical Conditions of Water in Coastal and Estuarine Environments @ 50%
96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960503 Ecosystem Assessment and Management of Coastal and Estuarine Environments @ 50%
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