This editorial provides introduction to the 13 contributions to this special issue which present inventory data on many previously undescribed capture fisheries, farming systems, geographical regions, inventory flows and supporting processes. The 13 papers also introduce methodological advances in the form of statistical considerations, impact categories relevant to aquatic resources, and spatial considerations.
The Convention on Biological Diversity provides a framework for countries to implement laws regulating the access, use and exchange of genetic resources, including how users and providers share the benefits from their use. While the international community has been preoccupied with resolving the unintended effects of access and benefit sharing (ABS) on domestication in agriculture for the past 25 years, its far-reaching consequences for global aquaculture has only recently dawned on policymakers, aquaculture producers and researchers.
Field consultations on the role of wild resources in people’s livelihoods were conducted in the Ayeyarwady Basin from the delta in the south to Putao in the north of Myanmar. Interviews and group discussions with local people, key government, and non-government stakeholders in 14 districts provided insights into the status and trends of wild resources and their management. This report is part of the The Ayeyarwady State of the Basin Assessment (SOBA) project.
Freshwater fishery resources are declining in Bangladesh due to over exploitation, anthropogenic causes and inadequate management. To improve sustainability of these resources, a community-based resource management initiative was implemented by Bangladesh's Local Government and Engineering Department. Working in partnership with community-based resource management the communities implemented a variety of management interventions. The purpose of this study is to assess the impact of community-based management on fisheries production and biodiversity.
The Ayeyarwady State of the Basin Assessment (SOBA) is one of the major knowledge outputs of the Ayeyarwady Integrated River Basin Management (AIRBM) Project prepared by Hydro-Informatics Centre (HIC). SOBA aims to inform planning in the Ayeyarwady Basin by providing baseline information on the condition and trends in water and land resources as well as related ecosystem services and the livelihoods and economies of Myanmar that depend on these resources.
A mass-balance steady-state trophic model of the coastal fisheries ecosystem off the West Coasts of Sabah and Sarawak, Malaysia (10 - 60 m depth) was constructed using the Ecopath software. The ecosystem models were partitioned into 29 ecological/trophic groups. The input values (e.g. biomasses) for selected groups were obtained from the research (trawl) surveys conducted in the area in 1972. The estimated mean trophic level of the fisheries catch for both models is about 3.3.
A preliminary mass-balance trophic model was constructed for the coastal fisheries ecosystem of the West Coast of Peninsular Malaysia (0 - 120 m depth). The ecosystem was partitioned into 15 trophic groups, and biomasses for selected groups were obtained from research (trawl) surveys conducted in the area in 1987 and 1991. Trophic interactions of the groups are presented. The network analysis indicates that fishing fleets for demersal fishes and prawns have a major direct or indirect impact on most high-trophic level groups in the ecosystem.
The Ecopath approach and software were used to construct a trophic model of the coastal fisheries ecosystem of the southwest (SW) coast of India. The model consisted of 11 ecological groups and used estimated landings from all areas along the southwest coast (based on the sample surveys conducted by Coastal Marine Fisheries Research Institute for the years 1994, 1995 and 1996). The trophic model suggests high catch levels, particularly for the large and medium predators, demersal feeders and detritivores.
The biomass of 40 ecological groups, the diet composition of prey and predators, production/biomass (P/B) and consumption/biomass (Q/B) ratios, and catches were used as basic input to parameterize an Ecopath model of the Gulf of Thailand. Following construction of a mass-balance ecosystem model, a time-dynamic simulation model (Ecosim) was used to simulate the impact of change in fishing effort. This was done using time series data to validate the historic fisheries development in the Gulf of Thailand prior to using the model for forward-looking simulations.
Bangladesh is rich in aquatic resources with extensive seasonal and perennial water bodies throughout the country. In the past, the expansive floodplains, oxbow lakes, beels, and haors were home to a vast range of fish species. Of the 260 fishes found in the inland waters of Bangladesh, 150 grow to a small size (maximum length of about 25 cm), and these are found in the wetlands.