Seaweed Farming

algae cultivation

Algae cultivation is the practice of cultivating and harvesting algae. A lot of us think of algae as a nuisance - the slimy, sometimes smelly stuff that clog the fishermen's nets, get entangled in our ankles in the sea and wash unwanted substances on the beach. BioMara, the current project, does not depend on wild collection, but aims to grow seaweed on farms, with the algae bound to floating lines.

sspan class="mw-headline" id="History">History[edit]

Indonesia collects algae that have been growing on a piece of ropes. Algae cultivation is the practise of cultivation and picking of algae. Algae farming has often been used as an option to improving farm economics, reducing fishery pressures and overfishing. Seaweed was collected worldwide as a nutrient resource and exported product for the manufacture of agricultural and carrageenan wares.

Algae farming began in Japan as early as 1670 in Tokyo Bay. Every fall the peasants threw twigs of these bamboos into flat, sludgy waters where the algae collected their pores. Nourishment from the stream would help the seaweed regrow. As a result, effective doubling of output was achieved.

Algae farming was established on several different Indonesian isles, such as the Red Isle. During the early 1970' there was a recognised need for algae and algae product that exceeded what was available and farming was seen as the best way to boost production. In the Philippines, the first algae farmers began to recommend the growing of laminaria algae and plains at a shallow low of about one meter.

New long-distance farming techniques are available that can be used in deep waters at a deep of about 7m. Using floated, grounded crop growing practices, they are the most important method in the North Sulawesi village of Indonesia. Seaweed farming in Asia is a relatively low-technology operation with high manpower requirements.

The cultivation of seaweed can lead to several ecological issues. Seaweed growers sometimes fell the mangrove to use it as poles for their rope. However, this has a negative impact on agriculture as it diminishes the nutrient content and biological variety of human activities due to exhaustion. Sometimes growers can also take eel grass out of their land. Growing seaweed contributes to the preservation of our cliffs by enhancing the variety of imported seaweed and seaweed and providing an additional habitat for endemic marine and invertebrate life.

Breeding can be advantageous by boosting the output of phytophagous fish and mussels in the area. In 1997 Pollnac & al 1997b report an increased Siginid migration following the beginning of intensive management of Seaweed epidemics in North Sulawesi village communities in Indonesia. Algae farming can be an important player in organic sequestering.

Algae farming has long since become widespread beyond Japan. Estimates made in 1997 estimate that 40,000 Philippine inhabitants earn their livelihood from algae farming. It is also grown throughout South East Asia, Canada, Great Britain, Spain and the United States. Only in Japan the value of Nori's annually output is 2 billion US dollars and it is one of the most precious cultures in the whole word producing fish in Japan.

Algae growing is in high need and offers plenty of opportunity and work for the area. The Philippines' survey showed that parcels of about one ha can have a net yield from agricultural activities in the ecumenical region of Ecuela that is 5 to 6 fold the mean farm worker's lowest salary.

During the same survey, they also recorded an rise in seaweed export from 675 tonnes (MT) in 1967 to 13,191 tonnes in 1980, which by 1988 had almost doubled to 28,000 tonnes. Manual for the cultivation of Cottonii and Spinosum. Algae farming: an alternative livelihood for small-scale fishermen?.. Rhode Island University, Coastal Resources Center, Narragansett, Rhode Island, USA.

Manufacture, trading and recycling of algae and algae product. University of Rhode Island, Narragansett, Rhode Island, √Čtats-Unis. Basic assessment of the socio-economic aspects of resource use in the coastal zone of Bentenan and Tumbak. University of Rhode Island, Narragansett, Rhode Island, √Čtats-Unis. Marine algae resource in Asian LDCs: output and socio-economic impacts.

Department of Aquaculture, Southeast Asia Fisheries Development Centre.

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