Wetlands are central to the livelihoods of rural communities through out the Mekong Region, providing vital functions and services that support the rural economy, ensure food security for the most vulnerable membrs of society, and underpin the prospects for national development. Proper appreciation of the importance of wetlands has been hampered by inadequate information and awareness of their uses, particularly among development planners, as well as legal and institutional frameworks that are often fragmented and poorly enforced.
This report provides an overview of the biological, economical, social and cultural values of river fisheries in the Lower Mekong Basin (Yunan, Laos, Thailand, Cambodia and Vietnam). The report also identifies the main impacts of environmental changes on these values.
The maximum sustainable yield of demersal fishery resources in the Gulf of Thailand to a depth of 50 m is estimated to be 750,000 tonnes. On this basis the Gulf has been overfished since 1973. There were over 4,000 trawlers registered in the Gulf in 1972; over 10,000 in 1982. The total catch of food fish has increased only slightly since 1963, most increases being of trash fish. However, the trash fish component includes increasing numbers of juvenile food fish. Trash fish are now mostly processed into fish meal.
The paper discusses the status of freshwater aquaculture, and the productivity and cost effectiveness of alternative technologies in the major fish producing countries in Asia, such as Bangladesh, China, India, Indonesia, the Philippines, Thailand and Vietnam. The analysis is based on field survey data collected by the WorldFish Center and its partner research institutes, and supplemented by secondary information. The paper adopts descriptive techniques to compare the performance of each technology across the countries in terms of productivity, cost effectiveness and profitability.
Silver barb (Puntius gonionotus Bleeker 1850) is an Asian carp that is popular as a food fish. It is distributed throughout Thailand in rivers, canals, reservoirs and swamps. It is also cultured in ponds and paddy fields. Its production from aquaculture in 2003 was estimated at 49,066 f metric tons (14 per cent of the total fish production), and valued at 34.6 millions US dollars, ranking third among freshwater fishes cultured in Thailand. However, the performance of many hatchery populations of silver barb is low, mainly due to a lack of improved stocks.
The management of fishing capacity in both inland and marine fisheries is a major policy concern in most countries in Southeast Asia. Excess capacity leads to a number of negative impacts, such as resource use conflicts, overfishing, environmental degradation, economic wastage, and security threats. This paper presents the results of a regional study that examined various approaches to managing excess fishing capacity in small-scale fisheries in Southeast Asia.
In this working paper, the authors carried out a study on the institutional, legal and policy framework for managing the fisheries, coastal resources and coastal environment in Thai land and proffered solutions to the management of these resources. The authors adapted various methodologies to carry out the study. They provided a description of the Thai political economic system. They have also identified four case studies to explore various resource management issues in Thailand and recommended strategies on how these can be addressed considering the peculiarity of each management issue.
Important fishery and coastal resources in Thailand are already being degraded or threatened by various anthropogenic factors. These factors include a rapidly growing coastal population, bureaucratic or administrative problems, overexploitation and pollution. This chapter shows how the government at the national and local levels addresses the problem. Laws, policies and plans are laid out both to counter resource degradation and to managethe resources.
Manila rope was used for the hanging method of green mussel culture. The monthly density of spat on rope, their rate of growth and environmental factors in the experimental area were determined.