Seaweed farming: Difference between revisions
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The practice of seaweed farming has long since spread beyond Japan. In 1997 it was estimated that 40,000 people in the [[Philippines]] made their living through seaweed farming.<ref name=coral54/> Cultivation is also common in all of southeast Asia, Canada, Great Britain, Spain, and the United States.<ref name=seafarm111/> |
The practice of seaweed farming has long since spread beyond Japan. In 1997 it was estimated that 40,000 people in the [[Philippines]] made their living through seaweed farming.<ref name=coral54/> Cultivation is also common in all of southeast Asia, Canada, Great Britain, Spain, and the United States.<ref name=seafarm111/> |
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==See also== |
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* [[Seaweed farming]] |
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{{reflist}} |
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==References== |
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;Bibliography |
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* {{cite book |title=Seafarm: the story of aquaculture |last=Borgese |first=Elisabeth Mann |year=1980 |publisher=Harry N. Abrams, Incorporated, New York |isbn=0810916045}} |
* {{cite book |title=Seafarm: the story of aquaculture |last=Borgese |first=Elisabeth Mann |year=1980 |publisher=Harry N. Abrams, Incorporated, New York |isbn=0810916045}} |
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* {{cite book |title=Coral Reefs: Challenges and Opportunities for Sustainable Management |last=Zertruche-Gonzalez |first=Jose A. |year=1997 |publisher=The World Bank |isbn=0821342355}} |
* {{cite book |title=Coral Reefs: Challenges and Opportunities for Sustainable Management |last=Zertruche-Gonzalez |first=Jose A. |year=1997 |publisher=The World Bank |isbn=0821342355}} |
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{{fishing industry topics|expanded=aquaculture}} |
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[[Category:Aquaculture]] |
[[Category:Aquaculture]] |
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Revision as of 19:27, 20 May 2010
Seaweed farming is the practice of cultivating and harvesting seaweed. In its most simple form, it consists of the management of naturally found batches. In its most advanced form, it consists of fully controlling the life cycle of the plant. Types of seaweed that are harvested include Gelidium, Pterocladia,[1] Porphya,[2] and Laminaria.[3]
History
Seaweed farming began in Japan as early as 1670 in Tokyo Bay. In autumn of each year, farmers would throw bamboo branches into shallow, muddy water, where the spores of the seaweed would collect. A few weeks later these branches would be moved to a river estuary. The nutrients from the river would help the seaweed to grow.[2]
In the 1940s, the Japanese improved this method by placing nets of synthetic material tied to bamboo poles. This effectively doubled the production.[2] A cheaper variant of this method is called the hibi method: simple ropes stretched between bamboo poles.
Environmental impact
Several environmental problems can result from seaweed farming. Sometimes seaweed farmers cut down mangroves to use as stakes for their ropes. This, however, negatively affects the farming since it reduces the water quality. Farmers may also sometimes remove eelgrass from their farming areas. This however is also discouraged as it negatively affects water quality.[4]
Seaweed farming helps to preserve coral reefs.[5]
Societal impact
The practice of seaweed farming has long since spread beyond Japan. In 1997 it was estimated that 40,000 people in the Philippines made their living through seaweed farming.[5] Cultivation is also common in all of southeast Asia, Canada, Great Britain, Spain, and the United States.[1]
See also
Notes
- ^ a b Borgese 1980, p. 111
- ^ a b c Borgese 1980, p. 112
- ^ Borgese 1980, p. 116
- ^ Zertruche-Gonzalez 1997, p. 53
- ^ a b Zertruche-Gonzalez 1997, p. 54
References
- Borgese, Elisabeth Mann (1980). Seafarm: the story of aquaculture. Harry N. Abrams, Incorporated, New York. ISBN 0810916045.
- Zertruche-Gonzalez, Jose A. (1997). Coral Reefs: Challenges and Opportunities for Sustainable Management. The World Bank. ISBN 0821342355.
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