Herbicide contamination and the potential impact to seagrass meadows in Hervey Bay, Queensland, Australia

McMahon, Kathryn, Bengtson Nash, Susan, Eaglesham, Geoff, Müller, Jochen F., Duke, Norman C. and Winderlich, Steve (2005) Herbicide contamination and the potential impact to seagrass meadows in Hervey Bay, Queensland, Australia. Marine Pollution Bulletin, 51 1-4: 325-334. doi:10.1016/j.marpolbul.2004.10.045


Author McMahon, Kathryn
Bengtson Nash, Susan
Eaglesham, Geoff
Müller, Jochen F.
Duke, Norman C.
Winderlich, Steve
Title Herbicide contamination and the potential impact to seagrass meadows in Hervey Bay, Queensland, Australia
Journal name Marine Pollution Bulletin   Check publisher's open access policy
ISSN 0025-326X
Publication date 2005
Sub-type Article (original research)
DOI 10.1016/j.marpolbul.2004.10.045
Volume 51
Issue 1-4
Start page 325
End page 334
Total pages 10
Place of publication Oxford, England
Publisher Pergamon-Elsevier Science Ltd.
Collection year 2005
Language eng
Subject C1
321299 Public Health and Health Services not elsewhere classified
730210 Environmental health
Abstract Low concentrations of herbicides (up to 70 ng 1(-1)), chiefly diuron (up to 50 ng 1 (-1)) were detected in surface waters associated with inter-tidal seagrass meadows of Zostera muelleri in Hervey Bay, south-cast Queensland, Australia. Diuron and atrazine (up to 1. 1 ng g(-1) dry weight of sediment) were detected in the sediments of these seagrass meadows. Concentration of the herbicides diuron, simazine and atrazine increased in surface waters associated with seagrass meadows during moderate river flow events indicating herbicides were washed from the catchment to the marine environment. Maximum herbicide concentration (sum of eight herbicides) in the Mary River during a moderate river flow event was 4260 ng 1(-1). No photosynthetic stress was detected in seagrass in this study during low river flow. However, with moderate river flow events, nearshore seagrasses are at risk of being exposed to concentrations of herbicides that are known to inhibit photosynthesis. (c) 2004 Elsevier Ltd. All rights reserved.
Keyword Environmental Sciences
Marine & Freshwater Biology
Seagrass
Herbicide
Zostera Muelleri
Hervey Bay
Queensland
Diuron
Flood
World Heritage Area
Chlorophyll Fluorescence
Water-quality
Recovery
Photosynthesis
Sediments
Habitats
Exposure
Q-Index Code C1

 
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Created: Wed, 15 Aug 2007, 07:00:11 EST