Tuesday 5 March 2013

How do Gulf corals beat the heat?


How do Gulf corals beat the heat?
Because of the global worming and the weather changing it will affect the corals in the entire world, but in the Gulf the corals managing to beat and resist by developing themselves. The algae photosynthesise, producing sugars that provide up to 90 per cent of the coral's energy, and in return, the coral provides shelter, nutrients mostly nitrogen and phosphorus and carbon dioxide for photosynthesis. Therefore at the University of Southampton, Jorg Wiedenmann subjects them to a range of temperatures to see how well they stand up. "Accurate predictions of the fate of coral reefs require a profound knowledge of the adaptation capacity of the main reef builders”. As we can see in the Gulf, the water was hotter than 36°C for more than a month. There was a huge mass mortality that year. Many reefs have still not recovered and 2010 was hot, too, with water temperatures in the Gulf exceeding 37°C. An extreme case of this bleaching was seen in 1998, when the El Niño weather phenomenon subjected 80 per cent of the world's coral reefs to extreme temperatures. To get some answers, Prof Burt has taken samples of hump coral (Porites lobata), a common reef-builder, from Abu Dhabi and sent them to a lab in Britain.

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