Monday, September 12, 2011

Importance of Coral Reefs and Mangroves


The Importance of Coral Reefs


        Coral reef ecosystems support a variety of human needs. They are important for subsistence, fisheries, tourism, shoreline protection, and yield compounds that are important in the development of new medicines. Coral reefs support a phenomenal diversity of species and provide irreplaceable sources of food and shelter. Tropical rain forests play a similar role on the land. Corals are an integral part of the reef and are especially vulnerable to human activities and to climate-related threats, such as mass bleaching and disease. Coral reefs have been used in the treatment of cancer, HIV, cardiovascular diseases, ulcers, and other ailments. Although coral reefs cover less than 1% of the Earth’s surface, they are home to 25% of all marine fish species.



The Importance of Mangroves

         Mangroves protect shorelines from damaging storm and hurricane winds, waves, and floods. Mangroves also help prevent erosion by stabilizing sediments with their tangled root systems. They maintain water quality and clarity, filtering pollutants and trapping sediments originating from land. Serving as valuable nursery areas for shrimp, crustaceans, mollusks, and fishes, mangroves are a critical component of Florida's commercial and recreational fishing industries. These habitats provide a rich source of food while also offering refuge from predation.  
In other parts of the world, people have utilized mangrove trees as a renewable resource. Harvested for durable, water-resistant wood, mangroves have been used in building houses, boats, pilings, and furniture. The wood of the black mangrove and buttonwood trees has also been utilized in the production of charcoal. Tannin`s and other dyes are extracted from mangrove bark. Leaves have been used in tea, medicine, livestock feed, and as a substitute for tobacco for smoking. In Florida, beekeepers have set up their hives close to mangroves in order to use the nectar in honey production.