The Context of Small-scale Integrated Agriculture-aquaculture Systems in Africa PDF Download
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Author:
Publisher: WorldFish
ISBN: 9711022656
Category : Agricultural systems
Languages : en
Pages : 331
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Book Description
Author:
Publisher: WorldFish
ISBN: 9711022656
Category : Agricultural systems
Languages : en
Pages : 331
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Book Description
Author: Manuel MartÃnez-Espinosa
Publisher: Food & Agriculture Org.
ISBN: 9789251039298
Category : Technology & Engineering
Languages : en
Pages : 194
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Book Description
The objective of the Consultation was to provide FAO and its members with information and advice on the role of small-scale aquaculture in rural development. To this end, participants were asked to analyze and reflect on four keynote papers prepared by selected participants. In addition, four information papers were presented and discussed. This document presents a summary of discussions and principal conclusions reached, followed by abstracts and full versions of the overview and thematic papers plus the abstracts of the information papers.
Author: Roger S. V. Pullin
Publisher: WorldFish
ISBN: 9718709053
Category : Aquaculture
Languages : en
Pages : 367
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Book Description
Author: Randall E. Brummett
Publisher: WorldFish
ISBN: 9718709665
Category : Aquaculture
Languages : en
Pages : 82
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Book Description
Author: Barry A. Costa-Pierce
Publisher: John Wiley & Sons
ISBN: 1405148667
Category : Technology & Engineering
Languages : en
Pages : 400
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Book Description
As the world's demand for food from aquatic environments continues to increase, the importance of performing aquaculture in an environmentally responsible manner also increases. The aim of this important and thought-provoking book is to stimulate discussion among aquaculture's modern scientific, education and extension communities concerning the principles, practices and policies needed to develop ecologically and socially sustainable aquaculture systems worldwide. Ecological Aquaculture provides fascinating and valuable insights into primitive (and often sustainable) culture systems, and ties these to modern large-scale aquaculture systems. The book is edited, and authored to a considerable degree, by Barry Costa-Pierce who has assembled a team of some of the leading thinkers in the field, providing information spanning a spectrum of activities from artisanal to high technology approaches to producing aquatic organisms in a balanced and environmentally-friendly way. Ecological Aquaculture is an essential purchase for all aquaculture personnel involved in commercial, practical and research capacities. Libraries in research establishments and universities where aquaculture, biological, environmental and aquatic sciences are studied and taught should have copies of this book available on their shelves.
Author: James M. Kapetsky
Publisher: Food & Agriculture Org.
ISBN: 9789251036150
Category : Business & Economics
Languages : en
Pages : 80
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Book Description
Author: José Aguilar-Manjarrez
Publisher: Food & Agriculture Org.
ISBN: 9789251041390
Category : Business & Economics
Languages : en
Pages : 196
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Book Description
"(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: Hermann Waibel
Publisher: CABI
ISBN: 1845932846
Category : Business & Economics
Languages : en
Pages : 290
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Book Description
Over the past two decades, significant investment has been made into agriculture-related natural resource management research in developing countries. This collection of case studies establishes a methodological foundation for impact assessments of NRMR through a discussion of research conducted by the CGIAR around the world.
Author: Randall E. Brummett
Publisher: WorldFish
ISBN: 9718709584
Category : Aquaculture
Languages : en
Pages : 52
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Book Description
Author: Conner Bailey
Publisher: Routledge
ISBN: 0429723733
Category : Social Science
Languages : en
Pages : 240
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Book Description
In this volume, an international group of contributors explores the newly emerging aquaculture industry. Focusing on the social and environmental dimensions of aquacultural development in both industrialized and nonindustrialized nations, they examine issues of social equity, user-group conflict, environmental impacts of production, and the mediating role of the state. They also discuss aquaculture's role in development activity-especially in sustainable development, where it can enhance community viability, coherence, and solidarity. Asserting the need for careful planning and recognizing impending political and moral choices, the contributors assess the decisionmaking process for public authorities and development agencies and consider the social consequences of these decisions. Policymakers responsible for promoting and managing this growing industry will find this volume invaluable as they begin to research and design appropriate institutional structures. In addition, scholars interested in the overall adoption and diffusion of new technologies will find here a rich source of information about a system that shares attributes with but also differs significantly from agricultural and fisheries production systems.
