Essay about Bleaching of Coral is Harming the Environment

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METHODS Bleaching occurrences have happened before the 1980s; however detailed information could not be gathered due to lack of reporting (Berkelmans, De’ath and Kininmonth). In 1911, the first bleaching event was reported at Bird Key Reef in the Florida Keys, in which unfamiliar warm weathers caused “injury” upon the corals and the death of many fishes (Berkelmans, De’ath and Kininmonth). In 1998, the worst bleaching event was recorded. In some parts of the world, live corals were completely harmed (Coghlan). Although bleaching can be found in animals, it is most notable in corals. These species have a symbiotic relationship with the yellow-brown colored zooxanthellae from the genus Symbiodinium (Douglas ). Figure 3 shows the …show more content…
METHODS Bleaching occurrences have happened before the 1980s; however detailed information could not be gathered due to lack of reporting (Berkelmans, De’ath and Kininmonth). In 1911, the first bleaching event was reported at Bird Key Reef in the Florida Keys, in which unfamiliar warm weathers caused “injury” upon the corals and the death of many fishes (Berkelmans, De’ath and Kininmonth). In 1998, the worst bleaching event was recorded. In some parts of the world, live corals were completely harmed (Coghlan). Although bleaching can be found in animals, it is most notable in corals. These species have a symbiotic relationship with the yellow-brown colored zooxanthellae from the genus Symbiodinium (Douglas ). Figure 3 shows the symbiotic relationship of the algae with a coral (Wadlow ). All species affected by bleaching have undergone mortality in massive numbers. Corals that are bleached usually reflect a white color, which is the calcium carbonate of the underlying skeleton (Douglas ). During coral bleaching, corals can usually determine the amount of zooxanthellae they want to lose. Figure 7 illustrates the process of coral bleaching (Outlook for the reef). However, the more stress upon a coral, the more zooxanthellae it will release than it has to. This causes the corals to lose their beautiful colors and photosynthetic pigments (Hauter and Hauter). The white-colored corals, which can easily be seen, are likely to have a reduced algal density of about 70 to >90%
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