Lake Kariba: A Man-Made Tropical Ecosystem in Central Africa

ISBN-13: 9789401023368 / Angielski / Miękka / 2012 / 779 str.

E. K. Balon; A. G. Coche

Opis

In 1964 the Lake Kariba Fisheries Research Institute (LKFRI) was created in Kariba, Rhodesia as a United Nations Development Program Project, and executed by the Food and Agriculture Organization (FAD) in cooperation with the Governments of Rhodesia and Zambia. Dr. A. G. COCHE took charge of the Limnological Section and conducted research on the entire lake between January 1965 and January 1966. In 1966 the Central Fisheries Research Institute (CFRI) was created in Chilanga, Zambia by the Department of Wildlife, Fisheries, and National Parks. It was also supported by a UNDP Project executed by FAD. Between 1967 and 1971 Dr. E. K. BALON & Dr. A. G. COCHE were in charge of the Sections of Ichthyobiology and of Limnology respectively. The results of their FAD research activities on Lake Kariba are united in this volume. In the first part A. G. COCHE presents a limnological synthesis. In the second part E. K. BALON studies in detail the fish production and succession. The views expressed are those of the authors and do not necessarily coincide with those of the Food and Agriculture Organization of the United Nations.

Spis treści

General Contents.- I Limnological Study of a Tropical Reservoir by A. G. Coche.- of Part I.- and Acknowledgements.- Section I The Zambezi catchment above the Kariba Dam: general physical background.- 1. Physiography.- 2. Geology and soils.- 3. Climate.- 4. Flora, fauna and human population.- Section II The rivers and their characteristics.- 5. The Zambezi River.- 6. Secondary rivers in the lake catchment.- Section III Lake Kariba physico-chemical characteristics.- 7. Hydrology.- 8. Morphometry and morphology.- 9. Sampling methodology.- 10. Optical properties.- 11. Thermal properties.- 12. Dissolved gases.- 13. Mineral content.- Section IV Conclusions.- 14. General trophic status of Lake Kariba with particular reference to fish production.- Literature cited.- Annex I.- Annex II.- II Fish Production of a Tropical Ecosystem by E. K. Balon1.- of Part II.- A Parable.- 1. Introduction and acknowledgements.- 2. Methods.- 3. Age and growth studies.- 4. Total production, available production and yield of major fish taxa from Lake Kariba.- 5. The eels.- 6. Fish production of the drainage area and the influence of ecosystem changes on fish distribution.- 7. The success and failure of the clupeid introduction.- Concluding discussion.- Epilogue.- Literature cited.- Appendix A. List of symbols used.- Appendix B. Efficiency of rotenone-cove samples by G. P. Bazigos.- Appendix C. Tables of mean sizes of individual species, life intervals and growth intensity.- Appendix D. Tables of individual species and single sample production computations.- Appendix E. Morphometry of sampling sites and standing crop tables.- Appendix F. Time of annulus inception: a pond experiment by E. K. Balon & E. M. Chadwick.- Appendix G. Lepidological study: Key scales of Lake Kariba fishes.- III Plates: An Annotated Photographic Summary of the Lake Kariba Ecosystem.- General Index.