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Study Shows Reefs at Risk

Author: Eric Seeger
A study performed in Australia's Great Barrier Reef shows that recent rises in ocean temperatures are having an adverse effect on living coral.

Stock Option Trading Professor Ove Hoegh-Guldberg study states that 1998 saw the worst case of coral bleaching on record. Bleaching occurs when water temperatures rise high enough to cause living coral to expel its photosynthetic symbiont zooxanthellae, becoming increasingly vulnerable to damaging light. Corals tend to die in great numbers immediately following bleaching events, which might stretch across thousands of square kilometers of oceans. The paper reports that every reef examined in Southeast Asia, the Pacific and Caribbean showed similar harmful trends.

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Currency Day Trading Even worse, these bleaching events are expected to increase as global warming trends continue. "Sea Temperatures calculated by all model projections show that the thermal tolerances of reef-building corals are likely to be exceeded within the next few decades," says Guldberg's reports. It is predicted that these mass bleachings will become an annual event sometime between the years 2030 and 2070. If his theory is correct, living coral reefs will be non-existent in many areas of the world by the year 2100.

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Financial Software Trading Greenpeace's commentary on the report suggests that reef fisheries will be equally affected.

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