NDLI: Photosystem II herbicide pollution in Hong Kong and its potential photosynthetic effects on corals.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Shaw, Chris M. Lam, Paul K. S. Mueller, Jochen F.
Spatial Coverage	Hong Kong
Description	Country affiliation: Australia Author Affiliation: Shaw CM ( The National Research Centre for Environmental Toxicology (EnTox), The University of Queensland, 39 Kessels Road, Coopers Plains, Queensland 4108, Australia. c.shawl@uq.edu.au)
Abstract	Photosystem II (PSII) herbicides have been shown to affect the photosynthesis of corals at low, environmentally relevant concentrations. The recent detection of the PSII herbicide Irgarol-1051 in coastal waters of Hong Kong at concentrations above the EC(50) for reduction of photosynthesis of corals prompted further investigation into the extent of PSII herbicide pollution in coral reefs of Hong Kong. Snap-shot and passive samples were taken from coral reef sites and evaluated via HPLC/MS-MS and a novel bioanalytical technique. Low concentrations (less than 10 ng L(-1)) of diuron and atrazine were found at all study sites. Extracts from these samples concentrated by a factor of 10 were found to reduce the photosynthetic yield of zooxanthellae. It appears unlikely that herbicide pollution is a key issue in isolation but may act synergistically with other stressors to reduce the viability of Hong Kong's coral reefs. The study has also demonstrated the feasibility of combining sample extraction techniques with a coral specific bioanalytical technique for a sensitive assessment of risks associated with herbicide exposure in corals.
File Format	HTM / HTML
ISSN	0025326X
Issue Number	6-12
Volume Number	57
e-ISSN	18793363
Journal	Marine Pollution Bulletin
Language	English
Publisher	Elsevier
Publisher Date	2008-01-01
Publisher Place	Great Britain (UK)
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Biology Anthozoa Drug Effects Herbicides Toxicity Photosynthesis Photosystem Ii Protein Complex Water Pollutants, Chemical Animals Dinoflagellida Dose-response Relationship, Drug Hong Kong Seawater Chemistry Journal Article
Content Type	Text
Resource Type	Article
Subject	Pollution Aquatic Science Oceanography

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Symbiont-specific responses in foraminifera to the herbicide diuron.

Detection and ecological threats of PSII herbicide diuron on coral reefs around the Ryukyu Archipelago, Japan.

Phytotoxicity induced in isolated zooxanthellae by herbicides extracted from Great Barrier Reef flood waters.

Lethal and sub-lethal chronic effects of the herbicide diuron on seagrass.

Combined thermal and herbicide stress in functionally diverse coral symbionts.

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

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.

Environmental variabilities and the distribution of octocorals and black corals in Hong Kong.

Co-tolerance of phytoplankton communities to photosynthesis II inhibitors.

Photosystem II herbicide pollution in Hong Kong and its potential photosynthetic effects on corals.

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Symbiont-specific responses in foraminifera to the herbicide diuron.

Detection and ecological threats of PSII herbicide diuron on coral reefs around the Ryukyu Archipelago, Japan.

Phytotoxicity induced in isolated zooxanthellae by herbicides extracted from Great Barrier Reef flood waters.

Lethal and sub-lethal chronic effects of the herbicide diuron on seagrass.

Combined thermal and herbicide stress in functionally diverse coral symbionts.

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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.

Environmental variabilities and the distribution of octocorals and black corals in Hong Kong.

Co-tolerance of phytoplankton communities to photosynthesis II inhibitors.

Photosystem II herbicide pollution in Hong Kong and its potential photosynthetic effects on corals.