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

journal contribution
posted on 06.12.2017, 00:00 by K Kennedy, M Devlin, K Martin, Alison Jones, R Packett, J Mueller, C Bentley, K Lee-Chue, C Paxman, S Carter
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 longterm 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).

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

64

Issue

7

Start Page

1495

End Page

1507

Number of Pages

13

eISSN

0025-326X

ISSN

0025-326X

Location

Netherlands

Publisher

Elsevier

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Australian Centre for Tropical Freshwater Research; Centre for Environmental Management; Department of Natural Resources and Mines; Dept. of Science, Information Technology, Innovation and the Arts; Faculty of Sciences, Engineering and Health; Forensic and Scientific Services; Great Barrier Reef Marine Park Authority; Institute for Resource Industries and Sustainability (IRIS);

Era Eligible

Yes

Journal

Marine pollution bulletin.