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• 1. [Article] Renewal Fishery Resource Abundance and Poverty Eradication for Coastal Fishermen in Thailand

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Renewal Fishery Resource Abundance and Poverty Eradication for Coastal Fishermen in Thailand Author: Tokrisna, Ruangrai Research Paper Title: Renewal Fishery Resource Abundance and Poverty Eradication for Coastal Fishermen in Thailand Author: Tokrisna, Ruangrai Research Paper Close

• 2. [Article] The Economic Loss in Thai Fisheries

  Main fishing gear in Thailand was otter board trawls. More than 70% of the total Thai fishing vessels had been using this fishing gear, as well as push net which was restricted targeting for demersal resources. ...

  Citation × Citation Citation Abstract Copy Title: The Economic Loss in Thai Fisheries Author: Tokrisna, Ruangrai Main fishing gear in Thailand was otter board trawls. More than 70% of the total Thai fishing vessels had been using this fishing gear, as well as push net which was restricted targeting for demersal resources. Due to the 2.5 cm fine mesh size, juvenile economic species had been caught and sold as trash fish. Another important fishing gear which had conflict in utilization of fishery resources in Thailand was anchovy fishery, also using fine mesh size incurring by catches of juvenile economic species sold as trash fish. Von Bertalanffy growth function and length-weight relationship were employed in estimating the economic losses of these by catches of juvenile economic species. The loss of these economic species was estimated to be 10.82% of the usual fishing cost in case of anchovy purse seiner while it could be as high as 25.55% in case of light luring anchovy purse seine. For otter board trawler, this loss was estimated as high as 90.42% of the fishing cost, while they were 19.64% and 816.84% in case of push netters. Title: The Economic Loss in Thai Fisheries Author: Tokrisna, Ruangrai Main fishing gear in Thailand was otter board trawls. More than 70% of the total Thai fishing vessels had been using this fishing gear, as well as push net which was restricted targeting for demersal resources. Due to the 2.5 cm fine mesh size, juvenile economic species had been caught and sold as trash fish. Another important fishing gear which had conflict in utilization of fishery resources in Thailand was anchovy fishery, also using fine mesh size incurring by catches of juvenile economic species sold as trash fish. Von Bertalanffy growth function and length-weight relationship were employed in estimating the economic losses of these by catches of juvenile economic species. The loss of these economic species was estimated to be 10.82% of the usual fishing cost in case of anchovy purse seiner while it could be as high as 25.55% in case of light luring anchovy purse seine. For otter board trawler, this loss was estimated as high as 90.42% of the fishing cost, while they were 19.64% and 816.84% in case of push netters. Close

• 3. [Article] Conflict in Fishery Resource Utilization: The Case of Light Luring Anchovy Fishery in Thailand

  In late 1999 Artisanal Fisherman Association in Thailand requested the government to take actions in curbing destructive anchovy fishing gears. They believed that anchovy fishing was the main cause of ...

  Citation × Citation Citation Abstract Copy Title: Conflict in Fishery Resource Utilization: The Case of Light Luring Anchovy Fishery in Thailand Author: Tokrisna, Ruangrai Year: 2001 In late 1999 Artisanal Fisherman Association in Thailand requested the government to take actions in curbing destructive anchovy fishing gears. They believed that anchovy fishing was the main cause of fishery resource depletion in their fishing grounds. Main anchovy fishing gears were light luring falling net, purse seine, and scoop net. All of them are Juvenile bycatch varied from 1.72 – 30.37% of total catches depending on gear type, vessel size, fishing ground, fishing month, and fishing year. Economic losses of juvenile bycatch were $1 – 331/boat/trip. In Songkhla, the crisis problem area, economic losses from light luring falling net were as high as 0.42 – 7.64 times of the return from anchovy. The losses from light luring anchovy purse seine were 23 – 35% of the return from anchovy. The losses from light luring scoop net varied around 2 – 7%. Anchovy catch values in Thailand was $26 million in 1997. Value added from processing was $65 million, mainly from fish sauce. In spite of low value added, 59% of the catches were processed as boiled-dried/dried anchovy mainly for export. 44% of the anchovy value in the importing country were the trade margins, including tax, in importing country. Fishing cost was 20%. This cost estimation did not include the economic loss from juvenile bycatch. Processing and marketing costs in Thailand amounted to 19%. Profit margins for domestic fishermen, processors and traders added up to 17%. Thailand might have been exporting anchovy at an underpaid resource value. The relatively better return from anchovy had led to rapid increase in anchovy fishing effort. If fishing effort exceeded carrying capacity especially in habitats of juvenile economic species, it could lead to decrease in fishing income due to resource depletion not only for artisanal fishermen but anchovy fishermen as well. Recommendations were to determine optimum fishing effort in specific fishing grounds and control the effort. Where there had been overfishing, auction on fishing license and fee on anchovy fishing on the basis of economic loss could be introduced. Coastal community should take part in controlling anchovy fishing effort. Relocation of artisanal fishermen through training and support on initial investment in nonfishing sector was recommended. Title: Conflict in Fishery Resource Utilization: The Case of Light Luring Anchovy Fishery in Thailand Author: Tokrisna, Ruangrai Year: 2001 In late 1999 Artisanal Fisherman Association in Thailand requested the government to take actions in curbing destructive anchovy fishing gears. They believed that anchovy fishing was the main cause of fishery resource depletion in their fishing grounds. Main anchovy fishing gears were light luring falling net, purse seine, and scoop net. All of them are Juvenile bycatch varied from 1.72 – 30.37% of total catches depending on gear type, vessel size, fishing ground, fishing month, and fishing year. Economic losses of juvenile bycatch were $1 – 331/boat/trip. In Songkhla, the crisis problem area, economic losses from light luring falling net were as high as 0.42 – 7.64 times of the return from anchovy. The losses from light luring anchovy purse seine were 23 – 35% of the return from anchovy. The losses from light luring scoop net varied around 2 – 7%. Anchovy catch values in Thailand was $26 million in 1997. Value added from processing was $65 million, mainly from fish sauce. In spite of low value added, 59% of the catches were processed as boiled-dried/dried anchovy mainly for export. 44% of the anchovy value in the importing country were the trade margins, including tax, in importing country. Fishing cost was 20%. This cost estimation did not include the economic loss from juvenile bycatch. Processing and marketing costs in Thailand amounted to 19%. Profit margins for domestic fishermen, processors and traders added up to 17%. Thailand might have been exporting anchovy at an underpaid resource value. The relatively better return from anchovy had led to rapid increase in anchovy fishing effort. If fishing effort exceeded carrying capacity especially in habitats of juvenile economic species, it could lead to decrease in fishing income due to resource depletion not only for artisanal fishermen but anchovy fishermen as well. Recommendations were to determine optimum fishing effort in specific fishing grounds and control the effort. Where there had been overfishing, auction on fishing license and fee on anchovy fishing on the basis of economic loss could be introduced. Coastal community should take part in controlling anchovy fishing effort. Relocation of artisanal fishermen through training and support on initial investment in nonfishing sector was recommended. Close

• 4. [Article] Bangkok Buyer Decision on Pla Tubtim (Oreochromis sp.)

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Bangkok Buyer Decision on Pla Tubtim (Oreochromis sp.) Author: Tokrisna, Ruangrai, Charoenwittanadech, Wanlee Research Paper Title: Bangkok Buyer Decision on Pla Tubtim (Oreochromis sp.) Author: Tokrisna, Ruangrai, Charoenwittanadech, Wanlee Research Paper Close

• 5. [Article] Global Fisheries and Local Problems: How Ecost Might Help Ameliorate Overfishing in Thailand?

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Global Fisheries and Local Problems: How Ecost Might Help Ameliorate Overfishing in Thailand? Author: Tokrisna, Ruangrai Research Paper Title: Global Fisheries and Local Problems: How Ecost Might Help Ameliorate Overfishing in Thailand? Author: Tokrisna, Ruangrai Research Paper Close

• 6. [Article] Community based fishery management in Hyogo Prefecture, Seto Inland Sea

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Community based fishery management in Hyogo Prefecture, Seto Inland Sea Author: Tokrisna, Ruangrai Research Paper Title: Community based fishery management in Hyogo Prefecture, Seto Inland Sea Author: Tokrisna, Ruangrai Research Paper Close

• 7. [Article] Economic Instruments for Thai Marine Rehabilitation

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Economic Instruments for Thai Marine Rehabilitation Author: Tokrisna, Ruangrai Research Paper Title: Economic Instruments for Thai Marine Rehabilitation Author: Tokrisna, Ruangrai Research Paper Close

• 8. [Article] Trade, environment and the fishers in Thailand

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Trade, environment and the fishers in Thailand Author: Tokrisna, Ruangrai Research Paper Title: Trade, environment and the fishers in Thailand Author: Tokrisna, Ruangrai Research Paper Close