Role Of Fishery Technology In Management And Development Of Freshwater Fisheries In Africa

Author : Food and Agriculture Organization of the United Nations. Fishery Industries Division
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251008317
Total Pages : 78 pages
Book Rating : 4.10/5 ( download)

DOWNLOAD NOW!

Download or read book Role of Fishery Technology in Management and Development of Freshwater Fisheries in Africa written by Food and Agriculture Organization of the United Nations. Fishery Industries Division and published by Food & Agriculture Org.. This book was released on 1979 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Eyolf Jul-Larsen
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251049198
Total Pages : 140 pages
Book Rating : 4.9X/5 ( download)

DOWNLOAD NOW!

Download or read book Management, Co-management, Or No Management? written by Eyolf Jul-Larsen and published by Food & Agriculture Org.. This book was released on 2003 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report synthesizes the findings of ten case studies published in FAO Fisheries Technical Paper 426/2. The case studies have been conducted in five medium-sized lakes in the Democratic Republic of the Congo, Malawi, Zambia and Zimbabwe. The synthesis focuses on three features relevant for the SADC region: How has fishing effort developed in these lakes over the last 50 years? What causes changes in fishing effort? How do fishing effort and environmental factors compare in their effects on the regeneration of fish stocks?

Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251050323
Total Pages : 280 pages
Book Rating : 4.25/5 ( download)

DOWNLOAD NOW!

Download or read book Management, Co-management, Or No Management? written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2003 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains reports of ten case studies of freshwater fisheries in southern Africa which were conducted in five medium-sized lakes in the Democratic Republic of the Congo, Malawi, Zambia and Zimbabwe. Five of the case studies focus on the biological and environmental effects of fishing while the remaining five are concerned with historical and sociological analysis.

Author : José Aguilar-Manjarrez
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251041390
Total Pages : 196 pages
Book Rating : 4.93/5 ( download)

DOWNLOAD NOW!

Download or read book A Strategic Reassessment of Fish Farming Potential in Africa written by José Aguilar-Manjarrez and published by Food & Agriculture Org.. This book was released on 1998 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: "(Reprint. First published in 1998) The present study is an update of an earlier assessment of warm-water fish farming potential in Africa, by Kapetsky (1994). The objective of this study was to assess locations and areal expanses that have potential for warm-water and temperate-water fish farming in continental Africa. The study was based on previous estimates for Africa by the above author, and on estimates of potential for warm-water and temperate-water fish farming in Latin America by Kapetsky and Nath (1997). However, a number of refinements have been made. The most important refinement was that new data allowed a sevenfold increase in resolution over that used in the previous Africa study, and a twofold increase over that of Latin America (i.e. to 3 arc minutes, equivalent to 5 km x 5 km grids at the equator), making the present results more usable in order to assess fish farming potential at the national level. A geographical information system (GIS) was used to evaluate each grid cell on the basis of several land-quality factors important for fish-farm development and operation regardless of the fish species used. Protected areas, large inland water bodies and major cities were identified as constraint areas, and were excluded from any fish farming development altogether. Small-scale fish farming potential was assessed on the basis of four factors: water requirement from ponds due to evaporation and seepage, soil and terrain suitability for pond construction based on a variety of soil attributes and slopes, availability of livestock wastes and agricultural by-products as feed inputs based on manure and crop potential, and farm-gate sales as a function of population density. For commercial farming, an urban market potential criterion was added based on population size of urban centres and travel time proximity. Both small-scale and commercial models were developed by weighting the above factors using a multi-criteria decision-making procedure. A bioenergetics model was incorporated into the GIS to predict, for the first time, fish yields across Africa. A gridded water temperature data set was used as input to a bioenergetics model to predict number of crops per year for the following three species: Nile tilapia (Oreochromis niloticus), African catfish (Clarias gariepinus) and Common carp (Cyprinus carpio). Similar analytical approaches to those by Kapetsky and Nath (1997) were followed in the yield estimation. However, different specifications were used for small-scale and commercial farming scenarios in order to reflect the types of culture practices found in Africa. Moreover, the fish growth simulation model, documented in Kapetsky and Nath (1997), was refined to enable consideration of feed quality and high fish biomass in ponds. The small-scale and commercial models derived from the land-quality evaluation were combined with the yield potential of each grid cell for each of the three fish species to show the coincidence of each land-quality suitability class with a range of yield potentials. Finally, the land quality-fish yield potential combinations were put together to show where the fish farming potential coincided for the three fish species."

Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9251308136
Total Pages : 128 pages
Book Rating : 4.34/5 ( download)

DOWNLOAD NOW!

Download or read book Freshwater small pelagic fish and their fisheries in the major African lakes and reservoirs in relation to food security and nutrition written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-02-01 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small pelagic fish species found in lakes and introduced to reservoirs dominate by volume and contribute some of the most important inland fisheries in Africa with steadily increasing catches and additional potential. This circular reviews the status and importance of the pelagic fish and fisheries, together with small fish in general, for sustainable and healthy livelihoods in Africa. It reviews the biology and biological production of the most important pelagic species in lakes and reservoirs as well as the impacts of environmental and climatic variation on the stocks of these species. It examines and discuss the various capture techniques together with potential of improvements in the fisheries and associated processing and national and regional trade within Africa. The knowledge generated by the circular will be useful for policy makers and development practitioners to design and implement more effective policies, strategies and programs that will contribute to reducing the food insecurity and conflicts that currently affect the people in sub-Saharan Africa.

Author : H. Roggeri
Publisher : Springer Science & Business Media
ISBN 13 : 9401583986
Total Pages : 340 pages
Book Rating : 4.85/5 ( download)

DOWNLOAD NOW!

Download or read book Tropical Freshwater Wetlands written by H. Roggeri and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : E. O. Ita
Publisher : Food & Agriculture Org.
ISBN 13 : 9789250013497
Total Pages : 64 pages
Book Rating : 4.93/5 ( download)

DOWNLOAD NOW!

Download or read book Bibliographie Choisie Sur Les Grands Réservoirs Africains written by E. O. Ita and published by Food & Agriculture Org.. This book was released on 1983 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Euroconsult (Organization)
Publisher :
ISBN 13 :
Total Pages : 784 pages
Book Rating : 4.53/5 ( download)

DOWNLOAD NOW!

Download or read book Agricultural Compendium written by Euroconsult (Organization) and published by . This book was released on 1989-04 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like its predecessors, this third revised edition of the Agricultural Compendium is packed with a wealth of statistical and general information about almost every aspect of agriculture in the tropics and subtropics. "Anyone in tropical rural development, whether in a technical capacity or as an economist/planner making use of technical results, would both save themselves time and increase their understanding and efficiency through possession of this compendium. It is not only a reference volume but potentially a major contribution to mutual understanding and therefore communication between different disciplines." commented Soil Survey and Land Evaluation after the publication of an earlier edition. Numerous sections (e.g. Chapter 7, Part B - Fisheries) and even complete chapters (e.g. Chapter 3, Geodosy; Chapter 10, Sociology) have been rewritten for the present edition. A number of new sections have also been added (e.g. in Chapter 3, a section on remote sensing techniques). Furthermore, in view of the now common use of scientific pocket calculators and personal computers, a number of graphs have been replaced by the original formulae.

Author :
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.07/5 ( download)

DOWNLOAD NOW!

Download or read book Marine Fisheries Review written by and published by . This book was released on 1981 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : Henry A. Regier
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.22/5 ( download)

DOWNLOAD NOW!

Download or read book Training Course on the Management of Small-scale Fisheries in the Inland Waters of Africa written by Henry A. Regier and published by . This book was released on 1982 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: