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World-class protection boosts Australia's Great Barrier Reef
Date:2/22/2010

Australia's Great Barrier Reef (GBR) is showing an extraordinary range of benefits from the network of protected marine reserves introduced there five years ago, according to a comprehensive new study published in the Proceedings of the National Academy of Sciences.

The scientific team, a 'who's-who' of Australian coral reef scientists, describe the findings as "a globally significant demonstration of the effectiveness of large-scale networks of marine reserves".

"Our data show rapid increases of fish inside no-take reserves, in both reef and non-reef habitats ," says Professor Terry Hughes, Director of the ARC Centre of Excellence for Coral Reef Studies, speaking today at the American Association for the Advancement of Sciences meeting in San Diego, California.

"Critically, the reserves also benefit overall ecosystem health and resilience", says lead author Dr Laurence McCook of the ARC Centre of Excellence for Coral Reef Studies and Great Barrier Reef Marine Park Authority.

"Outbreaks of coral-eating, crown-of-thorns starfish are less frequent on no-take reefs, which consequently have a higher abundance of healthy corals after outbreaks."

"In concert with other measures, the reserve network is also helping the plight of threatened species like dugongs and marine turtles", says Dr McCook.

"There is now very strong evidence that no-take zones benefit fish populations within those zones. The numbers of coral trout doubled on some reefs within two years of closure to fishing," reports Dr Hugh Sweatman, from the Australian Institute of Marine Science.

Overall, the team concluded "With 32% of GBR reef area in no-take reefs, and fish densities about two times greater on those reefs, fish populations across the ecosystem have increased considerably." The researchers predict that as protected fish inside no-take areas grow larger and larger, they will contribute many more larvae to the whole ecosys
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Contact: Laurence McCook
l.mccook@gbrmpa.gov.au
61-074-750-0787
ARC Centre of Excellence in Coral Reef Studies
Source:Eurekalert

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