Blue frontiers: managing the environmental costs of aquaculture

This fact sheet presents the main findings from a global review of aquaculture conducted by the WorldFish Center in collaboration with Conservation International. The report “Blue Frontiers: Managing the environmental costs of aquaculture” aims to inform policy makers about the impacts of aquaculture on the environment and to stimulate debate on the optimal animal food production systems for tomorrow.

Blue frontiers: managing the environmental costs of aquaculture

Blue Frontiers: Managing the environmental costs of aquaculture is a publication from The WorldFish Center and Conservation International. The report analyzes how the global aquaculture industry uses natural resources and its impacts on the environment. It makes a broad-brush comparison of aquaculture with other animal food production systems and extrapolates from past history to look forward and identify potential future impacts. The paper also proposes important recommendations for policy makers and scientists engaged in debate on the future of food production and nutrition security.

Community-based aquaculture in India- strengths, weaknesses, opportunities and threats.

Community-based aquaculture founded on the principles of common interest groups working together regardless of sex and age has been an effective tool for implementing scientific aquaculture programs in India. Water bodies that do not interset villagers are targeted for use to avoid communal problems. Farmers who share common interests are identified and organized and a team leader chosen among them. An inventory of resources using the SWOT analysis is made.

Adaptive co-management for social-ecological complexity

Building trust through collaboration, institutional development, and social learning enhances efforts to foster ecosystem management and resolve multi-scale society–environment dilemmas. One emerging approach aimed at addressing these dilemmas, is adaptive co-management. This method draws explicit attention to the learning (experiential and experimental) and collaboration (vertical and horizontal) functions necessary to improve our understanding of, and ability to respond to, complex social–ecological systems.

Vulnerability of Cambodian water snakes: initial assessment of the impact of hunting at Tonle Sap Lake

This paper documents the emergent snake ‘fishery’ occurring on Tonle Sap Lake where an estimated 6.9 million snakes (mostly homalopsids) are removed annually, representing the world’s largest exploitation of a single snake assemblage. Based on interviews with hunters, we found that snake catches declined by 74–84% between 2000 and 2005, raising strong concerns about the sustainability of this hunting operation.

South and south-east Asian coastal fisheries: their status and directions for improved management: conference synopsis and recommendations

As a step to address the problems of coastal fisheries in Asia, the WorldFish Center joined forces with fisheries agencies from eight developing Asian countries (Bangladesh, India, Indonesia, Malaysia, The Philippines, Sri Lanka, Thailand and Vietnam) and the Asian Development Bank, to implement a project entitled “Sustainable Management of Coastal Fish Stocks in Asia” (also known as the “TrawlBase” project). The project was implemented between 1998 and 2001.

Restocking and stock enhancement of coastal fisheries: Potential, problems and progress

The demand for fish is expected to rise substantially by 2020. Although aquaculture must provide much of the additional fish, it remains to be seen whether restored or enhanced capture fisheries can also help fill the projected gap in supply. The key challenges for capture fisheries involve reducing fishing effort, removing excess fishing capacity and building the institutional arrangements needed to restore spawning biomass to more productive levels, and to reverse degradation of the supporting habitats.

Problem formulation and options assessment: science-guided deliberation in environmental risk assessment of transgenic fish

This chapter provides an overview of problem formulation and options assessment (PFOA) for scientists, risk assessment specialists, industry representatives and other interested public stakeholders who may be involved in deliberation over transgenic fish technology. This chapter explains how PFOA contributes to environmental risk assessment and assesses its advantages and challenges for the subject of transgenic fish biosafety. Consideration of how PFOA can be incorporated into diverse governance situations is explored in 4 country-specific case studies (Chile, Cuba, Thailand and China).

Invasive species in water-dependent ecosystems

Alien invasive species may cause as much havoc in water-dependent ecosystems, such as wetlands, lakes and rivers, as they do in terrestrial systems. In the aquatic medium they are more diffi cult to detect and eradicate or even to control and there needs to be special effort to avoid such invasions from both alien species and genotypes. This paper describes some of the pathways and impacts of alien and other invasive species in aquatic situations and suggests that the intentional introduction of any species to a new environment should be preceded by a rigorous risk assessment process.

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