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Coral reefs deliver ecosystem services for tourism, fisheries and shoreline protection. The annual global economic value of coral reefs has been estimated at anywhere from US$30–375 billion (1997 and 2003 estimates) [14] [15] to US$2.7 trillion (a 2020 estimate) [16] to US$9.9 trillion (a 2014 estimate). [17]
Fringing reefs are located near shore in the tropics in many areas and are the most common reef type. Coral reefs are found in the tropics in which the water is between 18 and 30 °C (64 and 86 °F). [6] Many of the Great Barrier Reef's components are actually fringing reefs. Of the close to 3,400 individual reefs, 760 are fringing reefs. [7]
Coral reefs are one of the most well-known marine ecosystems in the world, with the largest being the Great Barrier Reef. These reefs are composed of large coral colonies of a variety of species living together. The corals form multiple symbiotic relationships with the organisms around them. [7]
Coral reefs cover less than one percent of the ocean floor, but have out-sized benefits for marine ecosystems and economies. A quarter of marine life will depend on reefs for shelter, finding food ...
Coral reefs are one of the most well-known marine ecosystems in the world, with the largest being the Great Barrier Reef. These reefs are composed of large coral colonies of a variety of species living together. The corals from multiple symbiotic relationships with the organisms around them. [21] Coral reefs are being heavily affected by global ...
Coral reefs form complex marine ecosystems with tremendous biodiversity. Marine ecosystems are the largest of Earth 's aquatic ecosystems and exist in waters that have a high salt content. These systems contrast with freshwater ecosystems , which have a lower salt content.
Coral reefs are some of the most biodiverse habitats on earth, supporting large numbers of species of corals, fish, molluscs, worms, arthropods, starfish, sea urchins, other invertebrates and algae. Because of the photosynthetic requirements of the corals, they are found in shallow waters, and many of these fringe land masses. [ 24 ]
SMEs are characterized by carbonate reefs, which support many species. Estimates suggest that coral reefs alone may host between 1-9 million species. The three main types of reef formations are: [8] Fringing Reefs: attached to the shore; Barrier Reefs: separated from the mainland by a lagoon; Atoll Reefs: ring-shaped reefs surrounding a lagoon