Naylor et al discuss the environmental impact of aquaculture production on salmon and shrimp.
From the history of introductions and the development of successful aquaculture elsewhere, it appears that the use of exotic species to speed up the rate of aquaculture development in Africa is unlikely to be an efficacious strategy. The major sustained aquaculture industries worldwide evolved from close working relationships between pioneering investors and local research-and-development institutions.
This bibliography highlights impacts on fisheries and livelihoods attributed to coral reef marine protected areas in Pacific Island countries and territories. Included in this collection is literature that reports various forms of reef area management practiced in Pacific Island countries: reserves, sanctuaries, permanent or temporary closed areas, community and traditional managed areas.
There is a pressing need to enhance fish production in Africa through improved farm management and the use of improved fish breeds and/or alien species in aquaculture while at the same time conserve the aquatic genetic diversity. This paper presents the outcome of the Expert Consultation on Biosafety and Environmental Impact of Genetic Enhancement and Introduction of Improved Tilapia Strains/Alien Species in Africa held in Nairobi, Kenya on 20-23 February 2002.
This book discusses the various forms of tourism development in Southeast Asia's coastal areas, their environmental and socioeconomic impacts and the issues arising from conflicting resource uses. It also outlines the basic physical aspects of the coast, in the region, that must be assessed prior to development. Some guidelines, planning strategies and development controls for sustainable coastal tourism are presented.
This document is a synthesis of the major findings and recommendation of a study on the influence of built structures on the fisheries of the Tonle Sap Lake. The multidisciplinary study analysed the influence and impact of built structures on hydrology, fish, and ultimately on people. The project established a database of major structures around the Tonle Sap Lake. Hydrologists modeled the influence of infrastructure on the flow and quality of water. Environmental scientists analysed information about how infrastructure affects the environment.
River fisheries in Africa are important because of their contribution of animal protein to human diets. Such fisheries are highly dependent on hydrological regimes and show considerable year-to-year variation in response to natural climatic events. River flow regimes are being increasingly altered by withdrawals by man, principally for agriculture. The modification of hydrological regimes is leading to diminishing catches of fish and changes in the number and size of the species caught.
Aquaculture systems in developing countries are examined considering their environmental impact as well as benefits for producers. Extensive, semi-intensive and intensive systems are examined. Destruction of the naturalenvironment and ecosystem, pollution effects and detrimental effects of introduced species are among some of thenegative aspects of aquaculture development that have to be considered when setting up development projects.
A description is given of the Japanese muro-ami fishing gear, which although is very effective in catching elusivereef fish, causes considerable reef damage during its operation.
Details are given of developments in the Philippines regarding the conversion of mangrove forests intobrackishwater fishponds, considering in particular environmental implications. Social and human costs and ecological costs are examined. The effects of increased stocking densities and of the use of chemicals and drugs on the pond ecosystems are discussed. Recommendations are given regarding measures to be taken for the conservation and management of the environment.