Artisanal fisheries of the Chad Basin in Africa PDF Download

Author: A. E. Neiland
Publisher:
ISBN:
Category : Agricultural industries
Languages : en
Pages :

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Author: A. Neiland
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 112

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Author: Joan Baron
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 90

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Book Description

Author: Inge Tvedten
Publisher: Nordic Africa Institute
ISBN: 9789171063274
Category : Technology & Engineering
Languages : en
Pages : 232

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Book Description

Author: A. E. Neiland
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 79

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Book Description

Author: Ainsworth, R., Cowx, I.G., Funge-Smith, S.J.
Publisher: Food & Agriculture Org.
ISBN: 9251338264
Category : Technology & Engineering
Languages : en
Pages : 325

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Book Description
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).

Author: John F. Craig
Publisher: John Wiley & Sons
ISBN: 1118394402
Category : Technology & Engineering
Languages : en
Pages : 920

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Book Description
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.

Author: Kim Geheb
Publisher: African Books Collective
ISBN:
Category : Business & Economics
Languages : en
Pages : 320

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Book Description
Brings together experiences of diverse management initatives in the inland fisheries of Eastern, Southern and Western Africa, notably regarding Lake Chad, Kariba, Malawi, Tanganyiaka, and Victoria, and the River Gambia. Considers how to achieve optimal yields, co-management practices, resources issues, etc.

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: Arthur E. Neiland
Publisher: Springer Science & Business Media
ISBN: 9401727368
Category : Science
Languages : en
Pages : 254

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Book Description
This book offers new perspectives on poverty in small-scale fisheries, introducing innovative concepts and ideas and drawing upon recent knowledge generated by in-depth case studies. The text makes explicit connections with the Sustainable Livelihood Approach and the Code of Conduct for Responsible Fisheries - two prominent frameworks which are recognized, applied and promoted internationally by scholars, practitioners and donor agencies in their work on fisheries development.