Role Of Fishery Technology In Management And Development Of Freshwater Fisheries In Africa
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Role Of Fishery Technology In Management And Development Of Freshwater Fisheries In Africa
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Author : Food and Agriculture Organization of the United Nations. Fishery Industries Division
language : en
Publisher: Food & Agriculture Org.
Release Date : 1979
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 has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Technology & Engineering categories.
Management Co Management Or No Management
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Author : Eyolf Jul-Larsen
language : en
Publisher: Food & Agriculture Org.
Release Date : 2003
Management Co Management Or No Management written by Eyolf Jul-Larsen and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Business & Economics categories.
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?
Management Co Management Or No Management
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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2003
Management Co Management Or No Management written by Food and Agriculture Organization of the United Nations and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Business & Economics categories.
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.
Freshwater Small Pelagic Fish And Their Fisheries In The Major African Lakes And Reservoirs In Relation To Food Security And Nutrition
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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2019-02-01
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 has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-01 with Technology & Engineering categories.
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.
Sustainability And Management Of Aquaculture And Fisheries
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Author : Har Darshan Kumar
language : en
Publisher: Daya Books
Release Date : 2003
Sustainability And Management Of Aquaculture And Fisheries written by Har Darshan Kumar and has been published by Daya Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Aquaculture categories.
Sustainable water management, food security and water security being some of the most critical issues facing the world in the 21st century - dubbed the Century of Water : this monograph outlines various options for proactive management of fisheries and aquaculture to sustainably meet the growing food requirements of millions of people living in developing countries both in rural areas and in cities. Both freshwater and marine fisheries are covered. Besides giving production statistics calculated by various organisations, the book lists traditional as well as potentially promising newer organisms suitable for aquaculture in swamps, ponds, marshes, lakes and mangroves not only as a source of nutritious food but also as employment avenues for small-scale or marginal fisherfolk. The book can server as an introductory text for courses in fisheries and aquaculture both in traditional universities and in marine and freshwater institutes. Contents Chapter 1: General Introduction; Definitions, Definition of categories, Fish description, Sustainable development, Unsustainable fisheries, Aquaculture sustainability and food security, Wastes for aquaculture, Sustainable use of living marine sustainable, Aquaculture, Role of local governments in sustainable development, Enhancements systems approach to aquaculture, Quality, Safety, Marketing and trade of aquaculture products, Growth enhancement by genetic manipulation management concerns; Chapter 2: Fish Farming; Introduction, Sustainable aquaculture, Organic aquaculture, Genetics and aquaculture, Nutrition and feeding, Rapid fattening of Wild-caught eels, Exotic species, Salmon farming, Poverty alleviation, Box 2.1 CARP (Cyprinus carpio linnaeus), (Family Cyprinidae), Aquatic resources and the livelihoods of poor people, Water quality: Dissolved oxygen for sustainable aquaculture, Types of systems, Infrastructure and support technologies, Recirculation, Recirculation technology, Some new approaches, Fish cage systems, Inshore-nearshore cage farms, Offshore cage farming, Integrated cage-cum-pond aquaculture system, Abalone culture, Agriculture-aquaculture integration, Choice of fish species, Public health, Fodder-fish integration, Refuges, Stocking for rice-fish culture, Species-specific biology, Feeding and maintenance in rice-fish system, Management, Effects on rice yield, Benefits and potentials, Fish for integrated pest management in rice production, Fish as predators in rice fields, Shrimp farming in the sonoran desert; Chapter 3: Marine Fisheries and Aquaculture; Introduction, Trends in fishery development, Stock assessment, Global shellfish production, Fisheries and bioeconomics, The value of fisheries, Surplus production models, Stability, Multispecies assessment, Length, weight and age determination, Global synchrony in fish population variations, Marine protected areas, Scales relevant to recruitment in large marine, Ecosystems, Growth, survival and recruitment in large marine ecosystems (LMEs), Growth, Density-independent factors, Intrinsic or innate factors, A generalized concept of recruitment factors, Recruitment research in large marine, Ecosystems, Scallop farming, Sustainable shrimp culture, Aquaculture shrimp culture, Aquaculture in africa, Sustainable commercial aquaculture in sub-saharan africa, Sea urchin aquaculture (Echinoculture), Marine biotechnology and aquaculture, Biosecurity for shrimp aquaculture, Polyploidy in shrimp; Chapter 4: Coastal Aquaculture; Introduction, Global aquaculture production, Production systems, Cage cultivation, Chemicals and their applications, Soil and water treatments, Fertilizers, Disinfectants, Antibacterial agents, Therapeutants other than antibacterials, Pesticides, Herbicides/Algicides, Feed additives, Hormones, Issues of concern, Persistence, Residues in non-cultured organisms, Toxicity to non-target species, Stimulation of resistance, Effects on sediment biogeochemistry, Nutrient enrichment, Health of farm workers, Residues in seafood, Quality assurance of chemicals used in aquaculture, Difficulties in effluent treatment, Need for environmental fate and effects, Information, Salmon aquaculture, Prawn cultivation, Milkfish aquaculture in the philippines, Marine shrimp aquaculture in thailand; Chapter 5: Fisheries, Farming and Aquaculture in China and India; Introduction, Marine fisheries development, Selected species for sea farming, Seaweed, Molluscs, Abalone, Curstaceans (shrimp), Echinoderms (Sea cucumbers), Box 5.1 Sea cucumber, Marine fish (Left-eyed flounder), Sea farming and sea ranching systems, Inland fishery enhancements in china, Enhancement methods, Protection of natural fish resources, Stocking, Cage and pen fish culture, Reservoir fisheries, Marine capture fisheries (india), Inappropriate exploitation patterns, Target fishing, Managment versus exploitation, Sea ranching, Mariculture, Aquaculture, Shrimp production, Diversity and sustainability in aquaculture production, Regulation of egg production in crustaceans; Chapter 6: Inland Fisheries; Introduction, Perspectives, Polyculture, Transition from commercial to recreational use, Valuation, Environmental issues, Tilapia-the aquatic chicken, Tilapia genetics, Bird predation, Monosex populations, Lobster farming, Koura farming, Aquaculture techniques, Fishery biomanipulation, Fish removal, Stocking piscivorous fish, Impact of biomanipulation on fishery and fish stocks; Chapter 7: Wetlands and Mangroves; Introduction, Wetlands, Classes, Major Problems, Subsistence production and commercial production, Objectives of wetland management, Protection of wetlands, Management and conservation of wetlands in large lakes, Wetlands and shoreline gradients, Water level fluctuations, A model for changes in shoreline wetlands, A model for frequency and intensity of flooding, Centrifugal organization, Management guidelines, Mangroves-conversion into fish farms, Mangrove losses from shrimp farming, Aquaculture in wetlands of north india, nepal and bangladesh, Shrimp culture in india and bangladesh, Homestead catfish culture in bangladesh, Rice-cum-fish cultivation in nepal; Chapter 8: Freshwater Aquaculture in Europe; Introduction, Finfish production, The fish species, The role of introduced freshwater species in aquaculture production, Fish for industrial systems, Hygiene in foodstuffs, Production, products and sales, FAO code of conduct for responsible fisheries, FEAP code of conduct, Impact on trade of environmental and health/ hygiene legislation, Competition among aquaculture products, fish and non-fish meat products, Management of inland fisheries and aquaculture: Social, economic and cultural perspectives, Solutions, Inland fisheries in germany, Lake restoration in denmark; Chapter 9: Management of fisheries and aquaculture; Introduction, Models as a management tool, Articles relating to food safety, Article 6- General principles, Article 7- Fisheries management, Rehabilitation, Fisheries management and safety at sea, Role of fishermen, Good management practices, Sector level operating principles, Use of GMPs, Relationship of GMPs with other environmental management initiatives; Benefits of GMPs, Process for site specific SMPs, Initiation and participation co-management, Sector-level management needs, Integrated resource management, Management post-johannesburg, Five module LME approach, Management of post-harvest problems, Components of a national plan; Chapter 10: Environmental concerns; Introduction, Effects of fisheries on marine ecosystems, Overfishing, Impact of dams on fisheries, Aquatic macrophytes as a habitat of vectors and hosts of tropical diseases and biological control, Using fish, Aquaculture and inland fisheries, Global edible fish supply, Outlook, Inland fisheries, Threats, Managing species introductions, Pest fish in freshwater, Impacts of marine aquaculture, Secondary production in the oceans and the response to climate change, Effects of ultraviolet radiation on fisheries, Diel variation of DNA damage and repair, Effects of UV-B on fish in the antarctic, Effects of UV-B on phytoplankton, Variability of solar UV-B, Environmental effects of mussel farming, Minimizing environmental impacts of shrimp feeds.
A Strategic Reassessment Of Fish Farming Potential In Africa
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Author : José Aguilar-Manjarrez
language : en
Publisher: Food & Agriculture Org.
Release Date : 1998
A Strategic Reassessment Of Fish Farming Potential In Africa written by José Aguilar-Manjarrez and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Business & Economics categories.
"(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."
Tropical Freshwater Wetlands
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Author : H. Roggeri
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Tropical Freshwater Wetlands written by H. Roggeri and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Technology & Engineering categories.
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.
Fishing For Development
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Author : Inge Tvedten
language : en
Publisher: Nordic Africa Institute
Release Date : 1992
Fishing For Development written by Inge Tvedten and has been published by Nordic Africa Institute this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Technology & Engineering categories.
Bibliographie Choisie Sur Les Grands R Servoirs Africains
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Author : E. O. Ita
language : en
Publisher: Food & Agriculture Org.
Release Date : 1983
Bibliographie Choisie Sur Les Grands R Servoirs Africains written by E. O. Ita and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Technology & Engineering categories.
Freshwater Fisheries Ecology
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Author : John F. Craig
language : en
Publisher: John Wiley & Sons
Release Date : 2016-01-12
Freshwater Fisheries Ecology written by John F. Craig and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-01-12 with Technology & Engineering categories.
Inland fisheries are vital for the livelihoods and food resources of humans worldwide but their importance is underestimated, probably because large numbers of small, local operators are involved. Freshwater Fisheries Ecology defines what we have globally, what we are going to lose and mitigate for, and what, given the right tools, we can save. To estimate potential production, the dynamics of freshwater ecosystems (rivers, lakes and estuaries) need to be understood. These dynamics are diverse, as are the earths freshwater fisheries resources (from boreal to tropical regions), and these influence how fisheries are both utilized and abused. Three main types of fisheries are illustrated within the book: artisanal, commercial and recreational, and the tools which have evolved for fisheries governance and management, including assessment methods, are described. The book also covers in detail fisheries development, providing information on improving fisheries through environmental and habitat evaluation, enhancement and rehabilitation, aquaculture, genetically modified fishes and sustainability. The book thoroughly reviews the negative impacts on fisheries including excessive harvesting, climate change, toxicology, impoundments, barriers and abstractions, non-native species and eutrophication. Finally, key areas of future research are outlined. Freshwater Fisheries Ecology is truly a landmark publication, containing contributions from over 100 leading experts and supported by the Fisheries Society of the British Isles. The global approach makes this book essential reading for fish biologists, fisheries scientists and ecologists and upper level students in these disciplines. Libraries in all universities and research establishments where biological and fisheries sciences are studied and taught should have multiple copies of this hugely valuable resource. About the Editor John Craig is Editor-in-Chief of the Journal of Fish Biology and has an enormous range of expertise and a wealth of knowledge of freshwater fishes and their ecology, having studied them around the globe, including in Asia, North America, Africa, the Middle East and Europe. His particular interests have been in population dynamics and life history strategies. He is a Fellow of the Linnean Society of London and the Royal Society of Biology.