Properly managed coral reefs can yield an average of 15 tonnes of fish and other seafood per square kilometre each year
Southeast Asia's coral reef fisheries alone are estimated to yield US$ 2.4 billion annually
More than 80% of the world's shallow reefs are severely over-fished
32 of the 34 recognised animal Phyla are found on coral reefs compared to 9 Phyla in tropical rainforests
Occupying less than one quarter of 1% of the marine environment, coral reefs are home to more than 25% of all known marine fish species
58% of the world's coral reefs are potentially threatened by human activity
Coral reefs are found in 109 countries; significant reef degradation has occurred in 93
From 1876-1979 only three bleaching events were recorded, whereas 60 are on record from 1980 until 1993; in 2002 more than 400 events were recorded
We have already lost 27% of the world's coral reefs. If present rates of destruction are allowed to continue, 60% of the world's coral reefs will be destroyed over the next 30 years
More than 450 million people live within 60 kilometres of coral reefs, with the majority directly or indirectly deriving food and income from them
The total economic value of Indonesia 's reefs is estimated at US$1.6 billion annually
The total economic value of Philippine reefs is estimated at US$1.1 billion annually
Coral reefs in the Malacca Straits have an economic value of US$563 million
Southeast Asia is considered the global epicentre of marine diversity. Its 100,000km2of coral reefs (34% of the world's total) are home to over 600 of the 800 reef-building coral species in the world
Indonesia and the Philippines hold 77% of Southeast Asia's coral reefs and nearly 80% of threatened reefs.
Animal phylum coral reef is worth more the value. Economist has valued the Great Barrier Reef at $56 billion. Yet this figure grossly underestimates the value of the reef, as it mainly focuses on tourism and the reef’s role as an Australian icon. When you include aspects of the reef that the report excludes, such as the ecosystem services provided by coral reefs, you find that the reef is priceless.
extensive agriculture, in agricultural economics, system of crop cultivation using small amounts of labour and capital in relation to area of land being farmed. the crop yield in extensive agriculture depends primarily on the natural fertility of the soil, the terrain, the climate, and the availability of water.
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