Current Status Of Fisheries And Fish Stocks Of The Four Largest African Reservoirs
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Current Status Of Fisheries And Fish Stocks Of The Four Largest African Reservoirs
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Author : R. C. M. Crul
language : en
Publisher: Food & Agriculture Org.
Release Date : 1995
Current Status Of Fisheries And Fish Stocks Of The Four Largest African Reservoirs written by R. C. M. Crul 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 1995 with Nature categories.
Status Of Fish Stocks And Fisheries Of Thirteen Medium Sized African Reservoirs
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Author : M. van der Knaap
language : en
Publisher: Food & Agriculture Org.
Release Date : 1994
Status Of Fish Stocks And Fisheries Of Thirteen Medium Sized African Reservoirs written by M. van der Knaap 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 1994 with Technology & Engineering categories.
Dams Fish And Fisheries
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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2001
Dams Fish And Fisheries 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 2001 with Business & Economics categories.
The importance of free longitudinal passage of river fauna is stressed.
Review Of The State Of The World Fishery Resources Inland Fisheries
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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2018-11-05
Review Of The State Of The World Fishery Resources Inland Fisheries 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 2018-11-05 with Technology & Engineering categories.
The FAO Fishery and Aquaculture Circular C942 Revision 3 (C942 Rev. 3) updates and expands the scope of previous revisions of the circular. C942 Rev. 3 is an important baseline document, intended to assist in the global understanding of inland fisheries and inform dialogue on their current and future role. The third revision reviews the status and trends of inland fisheries catch at global, continental and subcontinental levels. It places inland capture fisheries in the context of overall global fish production, and calls attention to the importance of inland capture fisheries with respect to food security and nutrition and the Sustainable Development Goals. It quantifies global inland fisheries resources in terms of food production, nutrition, employment, economic contribution with respect to those countries/regions or subnational areas where they are important. A characterization approach to distinguish large-scale and small-scale fishing operations and their relative contributions is provided. The review provides estimated economic values of inland fisheries, as well as a valuation of potential replacement cost of these (in terms of dollars, other resources such as land and water, feeds). There is also an analysis of the extent and economic value of recreational inland fisheries. The contribution to employment and the gender differences related to this are quantified. The linkages between inland fisheries and biodiversity are also explored. C942 Rev. 3 discusses ways to measure and assess inland fisheries, in particular, how to establish more accurately inland fishery catches in the many situations where there are challenges to collection of catch statistics.
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.
Sustainable Hydropower In West Africa
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Author : Amos Kabo-Bah
language : en
Publisher: Academic Press
Release Date : 2018-01-10
Sustainable Hydropower In West Africa written by Amos Kabo-Bah and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-10 with Technology & Engineering categories.
Sustainable Hydropower in West Africa: Planning, Operation, and Challenges provides a comprehensive overview of the planning, deployment and management of hydropower in West Africa and similar regions. The authors use a practical approach to analyze available technology, modeling methodologies and sustainability aspects, such as the dependence between climate and hydropower, and socio-economic and environmental impacts. They discuss the need for innovative solutions and how to close research gaps in the field for this region. Although more than 50% of West Africa’s hydropower potential is still untapped, re-engineering and maintenance of existing hydropower plants is a key issue and is discussed. Issues of productivity and optimization are also covered, as well as the introduction of new technology and integration of hydropower into existing energy systems—renewable energy systems, in particular. Policy and regulation are also examined, considering competing needs when managing water resources. The final chapter offers a summary of activities, strategies, policies and technology for easy reference and practical use. Due to its wide coverage and real life examples, this is a useful reference for engineering professionals in the field of hydropower, working in West Africa and regions with similar conditions. This book helps engineers make technology and location decisions for planning, deploying and operating hydropower plants. The book’s accessible language and international authorship also allows for easy use by energy researchers, analysts and policy makers who need information for the analysis, modeling, financing, implementation and regulation of hydropower in West Africa and related regions. Presents the most current issues related to hydropower deployment and management in West Africa and regions with similar conditions Discusses key challenges, focusing on practical aspects and methodologies Explores the technological, sustainability and economic aspects to be considered when deploying, operating and maintaining hydropower plants in West Africa and similar regions
Large Dams
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Author : Anthony H. J. Dorcey
language : en
Publisher: World Bank Publications
Release Date : 1997-01-01
Large Dams written by Anthony H. J. Dorcey and has been published by World Bank Publications this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-01-01 with Business & Economics categories.
In 1996 the World Bank Operations Evaluation Department completed an internal review of 50 large dams funded by the World Bank. IUCN-The World Conservation Union and the World Bank agreed to jointly host a workshop in April 1997 to discuss the findings of the review and their implications for a more in-depth study. The workshop broke new ground by bringing together representatives from governments, the private sector, international financial institutions and civil society organizations to address three issues: critical advances needed in knowledge and practice, methodologies and approaches required to achieve these advances, and proposals for a follow-up process involving all stakeholders.
Diagnostic Study Of The Volta Basin Fisheries Part 1 Overview Of The Fisheries Resources
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Author :
language : en
Publisher: WorldFish
Release Date :
Diagnostic Study Of The Volta Basin Fisheries Part 1 Overview Of The Fisheries Resources written by and has been published by WorldFish this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
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."
A Review Of Major River Basins And Large Lakes Relevant To Inland Fisheries
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Author : Ainsworth, R., Cowx, I.G., Funge-Smith, S.J.
language : en
Publisher: Food & Agriculture Org.
Release Date : 2021-01-21
A Review Of Major River Basins And Large Lakes Relevant To Inland Fisheries written by Ainsworth, R., Cowx, I.G., Funge-Smith, S.J. 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 2021-01-21 with Technology & Engineering categories.
This review presents summary information on 45 river and great lake basins of the world, which support inland fisheries. The information presented is drawn from published information in peer-reviewed journals as well as grey literature. Each basin summary is presented in a common format, covering the description of the fishery, estimates of catch and numbers of people engaged in the fishery, important biodiversity features and threats to the fishery. An analysis of the replacement costs of inland fish of the basin is also presented. This is expressed in terms of the water, land and greenhouse gas footprint that would arise if the inland fish that are currently produced had to be replaced with other forms of food (such as aquaculture fish, livestock or field crops).