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Scripps leads first global snapshot of key coral reef fishes
Date:12/4/2013

In the first global assessment of its kind, a science team led by researchers at Scripps Institution of Oceanography at UC San Diego has produced a landmark report on the impact of fishing on a group of fish known to protect the health of coral reefs. The report, published in the journal Proceedings of the Royal Society B (Biological Sciences), offers key data for setting management and conservation targets to protect and preserve fragile coral reefs.

Beyond their natural beauty and tourist-attraction qualities, coral reefs offer economic value estimated at billions of dollars for societies around the world. Scripps Master's student Clinton Edwards, his advisor Jennifer Smith, and their colleagues at the Center for Marine Biodiversity and Conservation at Scripps, along with scientists from several international institutions, have pieced together the first global synthesis on the state of plant-eating fish at coral reef sites around the world. These herbivorous fish populations are vital to coral reef health due to their role in consuming seaweed, making them known informally as the "lawnmowers" of the reef. Without the lawnmowers, seaweeds can overgrow and out-compete corals, drastically affecting the reef ecosystem.

Among their findings, the researchers found that populations of plant-eating fish declined by more than half in areas that were fished compared with unfished sites.

"One of the most significant findings from this study is that we show compelling evidence that fishing is impacting some of the most important species on coral reefs," said Smith. "We generally tend to think of fishing impacting larger pelagic fishes such as tuna but here we see big impacts on smaller reef fish as well and particularly the herbivores. This is particularly important because corals and algae are always actively competing against one another for space and the herbivores actively remove algae and allow the corals to be competitively dominan
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Contact: Mario Aguilera
scrippsnews@ucsd.edu
858-534-3624
University of California - San Diego
Source:Eurekalert

Page: 1 2 3

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