A major concern among ecologists in and outside the ASEAN region is the degradation of the environment, and the overexploitation of freshwater and marine resources. There is as yet no indication that freshwater and marine resources are being managed on a sustainable basis, and loss of wetlands, whether freshwater swamps or mangrove swamps, is a major problem in the ASEAN region. Reclamation of mangrove swamps for aquaculture and agriculture seems to be a continuous activity here and the status of marine parks should also be examined in the light of recent resort development acitivities on small islands. This volume contains numerous recommendations for the promotion of ecological studies and regional cooperation in marine, freshwater ecology and conservation, with special emphasis on the common water masses like the Strait of Malacca, Gulf of Thailand and the South China Sea.

Coastal Ecosystem Processes, written by the renowned marine scientist Daniel Alongi, describes how pelagic and benthic food webs, from beaches and tidal flats to the continental edge, process energy and matter. This volume focuses on recent advances and new developments on how food webs are closely intertwined with the geology, chemistry, and physics of coastal seas. Dr. Alongi presents a process-functional approach as a way of understanding how the energetics of coastal ecosystems rely not only on exchanges within and between food chains, but how such functions are influenced by terrigenous and atmospheric processes. There is a need for documentation and an awareness of just how necessary, yet delicate, is the interplay of biological and physical forces between coastal ocean, land, and the atmosphere. Marine scientists today need to make informed management decisions about sustainable development and conservation of these fragile ecosystems. Coastal Ecosystem Processes provides present and future marine scientists the latest coastal ecosystem information to make the right decisions concerning the ecology of our oceans.

Wetlands could be described as land and water at Tropical wetlands: one and the same time, and as such are very specific on the brink ecosystems. Their often rich variety of resources makes them highly valuable to the peoples who live With a few exceptions (like the Everglades in the or regularly stay in them. However, access to them United States), the last remaining large wetlands are to be found in developing countries. Perhaps this can is difficult and those unaware of their services be explained by insufficient financial resources, frequently associate wetlands with such nuisances and calamities as mosquitos, disease, floods, impen lower popUlation density or a different concept of etrable wastelands, etc. As a result these areas are development and well-being. Whatever the reasons, often perceived as obstacles to human development many tropical wetlands still exist and support the and well-being. subsistence of many communities. But for how much History reflects these two views. Wetlands may longer? have been the cradle of great civilizations (like the During the last few decades tropical wetlands Maya, Inca, Aztec, Nilotic and Mesopotamian have also been destroyed or considerably altered. Dams and embankments now prevent water from civilizations), but elsewhere their destruction allowed other societies to develop. For example the Nether spreading into the floodplains of several rivers, like lands literally 'emerged from the waters' thanks to the Senegal, Volta and Nile.

Protected areas have become an increasingly important tool both in the conservation of biodiversity and in revenue generation through sustainable use. This is the only sure way to guarantee the protection necessary for many species, habitats and ecosystems in the future. Integrated Protected Area Management features contributions that consider the design, management and sustainable use of these regions. Three principal aspects are considered: the theory and practice of designation community-based conservation and the concept of sustainability identifying priorities for management. The emphasis throughout is on the importance of an interdisciplinary approach to planning and the active involvement of all stakeholders in decision-making processes as a means of ensuring long-term sustainability.

World Bank Discussion Paper No. 337. Draws on household survey data from 87 rural villages in Bangladesh to examine the contribution that government family planning programs, as well as other health care interventions, have made toward the recent reduction in fertility by increasing contraceptive use and reducing infant mortality. The paper suggests that the programs have been effective and finds that targeted credit program placement, such as the Grameen Bank and the Bangladesh Rural Advancement Committee (BRAC), contributed to the effort as well.

The continued expansion of aquaculture – in a wide range of environments and of a growing number of species has lead to increasing demands on aquatic resources. These demands vary with the culture species, the culture method and the environmental and ecological setting. While there are many examples of efforts to mitigate detrimental environmental effects, the environment remains the ultimate constraint on the future sustainable development of this maturing industry. The relationships between the activities of aquaculture and the environment are therefore of economic importance as well as of scientific interest and, for these reasons, a large international research community has developed over the past decade. In this volume, the resultant research is synthesised and critically reviewed, providing a source of reference to the most important recent developments at research and professional level. The authors are internationally recognised authorities who have made significant contributions to their respective research areas. The first part of the volume is organised in terms of the major culture types. This is followed by chapters of general relevance to aquaculture. The volume is designed to complement Biology of Farmed Fish (eds K D Black/A D Pickering), also published in this series. It is directed at fish biologists, shellfish biologists and environmental scientists working in the academic, governmental and industrial sectors.