19 Oct '11, 4am

wild shores of singapore: Coral-killer seaweeds and fishes that eat them

wild shores of singapore: Coral-killer seaweeds and fishes that eat them

"Attack of the killer seaweed" may sound like a cheesy horror flick, but for many coral species, murderous multicellular algae have become real-life villains. A new study of reefs in the South Pacific suggests that some algae can poison coral on contact. This chemical warfare may be increasing the pressure on struggling reef communities worldwide, researchers say. Along the reefs dotting Fiji, overfishing has pitted corals against algae in a battle royale. On swaths of coastline where fishing is restricted, corals such as the tall and branching Acropora millepora rule, says study co-author Mark Hay, a marine ecologist at the Georgia Institute of Technology in Atlanta. But where Fijians spear lots of herbivores such as bird-beaked parrotfish, few fish remain to prune back the region's seaweeds, a blanket term for many types of big algae. These algae then creep in, extending...

Full article: http://wildshores.blogspot.com/2011/10/coral-killer-seawe...

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