Shrimps in the mangrove
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CTA. 2005. Shrimps in the mangrove. Spore 118. CTA, Wageningen, The Netherlands.
Permanent link to cite or share this item: http://hdl.handle.net/10568/47885
External link to download this item: http://spore.cta.int/images/stories/pdf/old/spore118.pdf
Mangroves have been back in the international spotlight recently thanks to the protective role they played during the tsunami, which devastated coastal areas of the Indian Ocean in December 2004. Unfortunately though, many mangroves had already been lost
Mangroves have been back in the international spotlight recently thanks to the protective role they played during the tsunami, which devastated coastal areas of the Indian Ocean in December 2004. Unfortunately though, many mangroves had already been lost due to intensive shrimp farming in large, dammed ponds. On a global scale, shrimp farming accounts for around 5% of mangrove losses. However, there is no real need to choose between this type of aquaculture and preserving such ecosystems since sustainable and economic techniques do exist for using mangroves for shrimp farming. Silvo-fishery, a time-honoured method of managing coastal resources, combines forestry in a mangrove setting with salt-water aquaculture. It usually takes one of three forms. The first involves digging a ditch around a mangrove zone, with a ratio of 80% mangrove to 20% canal. The ditches are flooded as the tide rises, and the proximity of the mangroves encourages the development of crabs and shrimps. The shellfish are later harvested at low tide. The second method consists of establishing a small irrigated area in the middle of a forest, using the same ratio (20 to 80%). The third technique involves digging canals between two forested areas. FAO is encouraging these practices and the U.S.-based NGO, the Global Aquaculture Alliance (GAA) has launched an eco-label for products which comply with its environmental standards.
SubjectsANIMAL PRODUCTION AND HEALTH;
- CTA Spore (English)