27 Mar 2012:
Common Herbicide a Threat
To Great Barrier Reef, Report Says
A popular herbicide used widely in coastal regions of Australia has been found at dangerous levels in the Great Barrier Reef
, posing a toxic threat to the world’s largest coral reef system. The chemical Diuron, which is used largely by sugar cane farmers along the Queensland coast, was found at levels
In Fight to Save Coral Reefs,
Finding Strategies that Work
In four decades as a marine biologist, Nancy Knowlton
has played a key role in documenting the biodiversity of coral reefs and the threats they increasingly face. In an interview with Yale e360
, she highlights conservation projects that offer hope of saving these irreplaceable ecosystems.
55 times higher than safety standards in creeks that drain into the reef, and at levels 100 times the safe standards in the reef itself, according to a new report by the World Wildlife Fund. After a decade-long review, the Australian government on Tuesday announced it would continue a suspension of the chemical except in the country's tropical regions
. A decision on a permanent ban will be made by November, the Australian Pesticides and Veterinary Medicines Authority said. In a recent report, the Great Barrier Reef Marine Park Authority called a decline in the quality of water in catchment areas one of the greatest threats facing the reef. Nick Heath, the WWF freshwater and reef coordinator, said the widespread use of the chemical and the length of time it persists in the environment pose a significant threat. “Just to sort of explain how toxic this stuff is, just one gram in four Olympic-sized swimming pools is enough to damage sea grass,” he said.
Yale Environment 360 is
a publication of the
Yale School of Forestry
& Environmental Studies
Yale Environment 360
articles are now available in Spanish and Portuguese on Universia
, the online educational network. Visit the site.
Business & Innovation
Policy & Politics
Pollution & Health
Science & Technology
Antarctica and the Arctic
Central & South America
Photographer Robert Wintner documents the exquisite beauty and biodiversity of Cuba’s coral reefs, which are largely intact thanks to stifled coastal development in the communist nation. View the gallery.
is now available for mobile devices at e360.yale.edu/mobile
The Warriors of Qiugang
, a Yale Environment 360
video, chronicles a Chinese village’s fight against a polluting chemical plant. It was nominated for a 2011 Academy Award for Best Documentary Short.
Watch the video.
Top Image: aerial view of Iceland
. © Google & TerraMetrics.
A three-part series Tainted Harvest
looks at the soil pollution crisis in China, the threat it poses to the food supply, and the complexity of any cleanup. Read the series.