Reports
have came in that coral reefs are on the decline in the Caribbean area.
Researches have indicated that overfishing, pollution, disease and
bleaching are to blame. Coral reefs provide a number of services to the
world, such as tourism, fisheries, shoreline protection and overall
habitat for a variety of ocean species. Coral reefs are often described as
an oceanic rain forest, because of the number of species that inhabit
the reef. Storm surges are often deflected by reefs, which in turn
preserves coastal areas and possibly areas inhabited by humans. Coral
reefs are mostly composed of calcium carbonate secreted by coral. Reef
habitats occupy less than 0.1% of the world’s ocean, but they
contain a quarter of all ocean species. Individual species of the reef
carry out specific jobs, so when one species is eliminated an imbalance
is created. Overfishing causes a population decrease within the reef,
which offsets the entire ecosystem. Cyanide fishing is a way of
collecting fish for aquarium use. This practice involves spraying sodium
cyanide to stun the fish for collection. Cyanide fishing stuns some
desired fish, but harms other reef species indefinitely. Ocean
acidification is another threat to the coral reefs. Increased levels of
carbon dioxide has caused a more acidic ocean environment. Coral
environments are extremely sensitive to pH change. Agents are calling for coral reefs to be protected immediately from overfishing and other
direct human interference. Preserving coral reefs will not only benefit
the human species, but it will also help millions of others.
http://newswatch.nationalgeographic.com/2012/09/06/caribbean-coral-reefs-mostly-dead-iucn-says/
http://en.wikipedia.org/wiki/Coral_reef
http://en.wikipedia.org/wiki/Ocean_acidification
http://en.wikipedia.org/wiki/Cyanide_fishing
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