Managed Aquatic Ecosystems

About this book

Although the selection of aquatic organisms to be cultured for food or other purposes is dependent, in different regions of the world, upon traditions, food preferences and local availability, nevertheless the trend worldwide is to shift from an empirical approach towards sound scientific management. This volume on managed aquatic ecosystems describes several aquatic management practices representing different geographical areas and cultural backgrounds. These range from the age-old carp culture and management in Europe and other continents to the more recent intensive management and mass culture of autotrophic micro-algae. Other chapters describe oyster culture in coastal Japan, and the management of man-made reservoirs in India. The overall thrust of the volume is an ecosystem approach. The authors have provided data on the structural and functional aspects of each of the habitats, and brought out the interrelationships between various factors in the context of the species culture. Thus the volume represents a departure from more conventional, production-oriented treatment of the topics.

Contents

1. Introduction (R.G. Michael). 2. Fresh-Water Fish-Pond Management in the World (J. MatCi]ena, R. Berka). Europe including USSR. Asia. Africa. America. 3. Carp Ponds of Central Europe (V. KoCi]rinek et al.). Structural aspects. Functional aspects. 4. Fresh-Water Pond Ecosystems Managed Under a Moderate European Climate (K. Opuszynski). Functional aspects of trout ponds. Structure of warm-water pond ecosystems. Functioning of the pond ecosystem. Ecological efficiency. Management and manipulation of ecosystems for maximum yield. Managed pond ecosystems and human welfare. Future of managed pond ecosystems. 5. Man-Made Reservoirs as Managed Ecosystems in Tropical and Subtropical India (A.V. Natarajan, V. Pathak). Climatic, edaphic and morphometric features. Heat dynamics of reservoirs. Dynamics of chemical constituents in reservoirs. Nutrient cycle in reservoirs. Water cycle and its impact on hydrological parameters. Energy transformation through primary production. Biotic communities present in reservoirs. Utilization of fish-food resources. Management. 6. Management of Autotrophic Mass Cultures of Micro-Algae (D.F. Toerien et al.). Types of micro-algae. Design of culture units. Factors affecting productivity. Modelling productivity. Product quality. Nutritional aspects. Management of autotrophic systems. 7. Managed Coastal Waters for Oyster Culture in Japan (K. Mori). Background. Management of coastal waters by culture activities. Effects of culture activities on coastal waters. Effects of artificial eutrophication on production. (All chapters include an Introduction and References.) Systematic List of Genera. Author Index. Systematic Index. General Index.

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