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25
Teeming with species, tropical coral reefs have been long thought to be the areas of greatest biodiversity for fishes and other marine life -- and thus most deserving of resources for conservation. But a new global study of reef fishes reveals a surprise: when measured by factors other than the traditional species count -- instead using features such as a species' role in an ecosystem -- new hotspots of biodiversity emerge, including some nutrient-rich, temperate waters.

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25
A team of scientists from Canada and Australia have discovered that the decline in shark populations is detrimental to coral reefs. Where shark numbers are reduced due to commercial fishing, there is also a decrease in the herbivorous fishes which play a key role in promoting reef health.

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25
They call it the "white plague," and like its black counterpart from the Middle Ages, it conjures up visions of catastrophic death, with a cause that was at first uncertain even as it led to widespread destruction -- on marine corals in the Caribbean Sea. Now, at least, one of the causes of this plague has been found.

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25
The worst impacts of climate change on the world's poorest fishing communities can likely be avoided by careful management of the local environment and investing in the diversification of options for local people, according to new research.

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25
As Earth’s temperature climbs, stony corals are in decline. Less discussed, however, is the plight of gorgonian corals — softer, flexible, tree-like species. Divers have noted that gorgonians seem to be proliferating in parts of the Caribbean, and a new study will look to quantify this phenomenon.

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25
Coral reefs are tremendously important for ocean biodiversity. Unfortunately they have been in great decline in recent years, much of it due to the effects of global climate change. One such effect, called bleaching, occurs when the symbiotic algae that are essential for providing nutrients to the coral either lose their identifying photosynthetic pigmentation and their ability to perform photosynthesis or disappear entirely from the coral's tissue. Without a healthy population of these algae, the coral cannot survive.

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25
Shocks caused by climate and seasonal change could be used to aid recovery of some of the world's badly-degraded coral reefs, scientists have proposed. Marine scientists suggest that it may be possible to restore living coral cover to a badly-degraded reef system -- though not easy.

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25
The best real estate for coral reefs over the coming decades will no longer be around the equator but in the sub-tropics, new research suggests.

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