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Exploited fish make rapid comeback in world's largest no-take marine reserve network
Date:6/23/2008

No-take marine reserves, in which fishing is completely banned, can lead to very rapid comebacks of the fish species most prized by commercial and recreational fisheries, reveals a new study of Australia's Great Barrier Reef published in the June 24th issue of Current Biology, a Cell Press publication.

The researchers found in most cases that coral troutthe major targets of commercial and recreational hook-and-line fisheries in Australiabounced back in no-take reserves compared to fished sites in two years or less.

" We were surprised that we documented increases in coral trout density of 31% to 68% in such a short time," said study author Garry Russ of James Cook University in Queensland. "Others have seen such rapid increases in smaller-scale studies, usually at one or a few small reserves. The big surprise was that we detected a consistent, rapid increase in multiple large reserves spread over 1000 km offshore and 700 km inshore. This represents a positive and unprecedented response to reserve protection."

The new findings come from a joint study by scientists from James Cook University and the Australian Institute of Marine Science.

Australia's Great Barrier Reef Marine Park generates AU$5.8 billion annually from tourism and fisheries, the researchers said. In mid-2004, the Australian Government rezoned the park, placing more than 20% of each of 70 bioregions within it into the world's largest network of no-take marine reserves, covering more than 100,000 km.

The move sparked intense community interest and affected livelihoods, making monitoring of the new reserve network's effects imperative, the authors noted. In the new study, the teams used underwater visual census to survey reef organisms in new coral reef reserves and in control areas that remained open to fishing before and again 1.5 to 2 years after the reserves were put into place.

They found that the coral trout numbers were significantly highe
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Contact: Cathleen Genova
cgenova@cell.com
617-397-2802
Cell Press
Source:Eurekalert

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