Download Full eBooks in PDF
Source Book For The Inland Fishery Resources Of Africa Book in PDF, ePub and Kindle version is available to download in english. Read online anytime anywhere directly from your device. Click on the download button below to get a free pdf file of Source Book For The Inland Fishery Resources Of Africa book. This book definitely worth reading, it is an incredibly well-written.
Author : J.-P. vanden Bossche,G. M. Bernacsek
Publisher : Food & Agriculture Org.
Page : 432 pages
File Size : 41,6 Mb
Release : 1990
Category : Technology & Engineering
ISBN : 9251029830
Author : J.-P. vanden Bossche,G. M. Bernacsek
Publisher : Food & Agriculture Org.
Page : 436 pages
File Size : 52,6 Mb
Release : 1990
Category : Fisheries
ISBN : UCSD:31822007451453
Author : Jeff Jenness
Publisher : Food & Agriculture Org.
Page : 188 pages
File Size : 44,6 Mb
Release : 2007
Category : Business & Economics
ISBN : 9251057400
The African Water Resource Database (AWRD) is a set of data and custom-designed tools, combined in a geographic information system (GIS) analytical framework, aimed at facilitating responsible inland aquatic resource management with a focus on inland fisheries and aquaculture. It thus provides a valuable instrument to promote food security. The AWRD data archive includes an extensive collection of datasets covering the African continent, including: surface waterbodies, watersheds, aquatic species, rivers, political boundaries, population density, soils, satellite imagery and many other physiographic and climatological data. This technical paper is the first of two publications about the AWRD, and it gives a general overview addressed both to administrators and managers, as well as for professionals in technical fields. The second part of this technical paper is available separately (ISBN 9789251056479).
Author : R. C. M. Crul
Publisher : Unknown
Page : 21 pages
File Size : 40,8 Mb
Release : 1992
Category : Fisheries
ISBN : 0119410958
Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
Page : 399 pages
File Size : 41,6 Mb
Release : 2018-11-05
Category : Technology & Engineering
ISBN : 9789251307939
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.
Author : J.-P. vanden Bossche,G. M. Bernacsek
Publisher : Unknown
Page : 762 pages
File Size : 47,5 Mb
Release : 1990
Category : Fisheries
ISBN : UCLA:L0064289549
Author : J. P. Vanden Bossche,G. M. Bernacsek
Publisher : Unknown
Page : 268 pages
File Size : 52,9 Mb
Release : 1990
Category : Fishery resources
ISBN : UVA:35007000305890
Author : Jeff Jenness
Publisher : Food & Agriculture Org.
Page : 332 pages
File Size : 47,7 Mb
Release : 2007
Category : Business & Economics
ISBN : 9251056471
The African Water Resource Database (AWRD) is a set of data and custom-designed tools, combined in a geographic information system (GIS) analytical framework, aimed at facilitating responsible inland aquatic resource management with a focus on inland fisheries and aquaculture. It thus provides a valuable instrument to promote food security. The AWRD data archive includes an extensive collection of datasets covering the African continent, including: surface waterbodies, watersheds, aquatic species, rivers, political boundaries, population density, soils, satellite imagery and many other physiographic and climatological data. This technical paper is the second of two publications about the AWRD, and it includes a technical manual for spatial analysts and a workbook for university students and teachers. The first part of this technical paper is available separately (ISBN 9789251057407).
Author : José Aguilar-Manjarrez,Shree S. Nath
Publisher : Food & Agriculture Org.
Page : 196 pages
File Size : 42,7 Mb
Release : 1998
Category : Business & Economics
ISBN : 9251041393
"(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.
Page : 47 pages
File Size : 42,6 Mb
Release : 2018-11-23
Category : Technology & Engineering
ISBN : 9789251310984
The two and a half day Advisory Roundtable was convened to contribute to FAO’s response to the request by the 32nd Session of the Committee on Fisheries (COFI), to advise FAO on its approach to developing a more comprehensive report on methods and data and analytical approach, which could be used to provide a credible, objective and replicable assessment of inland fisheries; and ii) provide guidance on tools that could be provided to member states seeking advice with respect to assessing the status of their inland fisheries (yield/production, threats & drivers), predicting future impacts and how to quantify the effect of mitigation/adaptation measures on fisheries. The roundtable reviewed and discussed the background that had led up to the meeting to scrutinize the purpose of an assessment and the scope of coverage and how this could be used to determine the status of inland fisheries. It further developed the criteria to conduct such an assessment, and then attempted to apply the approach to a number of basins. This practical exercise was based on concrete examples from countries or basins with which the experts were familiar. It was concluded by the roundtable, that the use of a dual index approach is the right way to go, and that it can be used to assess fisheries both at the national, basin, regional and global levels although different levels of resolution will be required and may thus have somewhat different data requirements. Adding a valuation element will direct investment towards the fisheries that provides most benefit to society in the context of the priorities set at the national level. At the national level, data may include yields, catches, threats, and measures that can be used to estimate future adaptive capacity. For global level analysis an index approach will be necessary relying on “big” data. Any information system should be useful to serve, first and foremost, the countries that collect/analyse and provide the data. Reports to FAO that could be compiled into a global picture of the state of inland fisheries would be a value added product of this process. The national reports would also have utility in reporting on progress towards the Sustainable Development Goals/Aichi Targets.
Author : M. van der Knaap
Publisher : Food & Agriculture Org.
Page : 124 pages
File Size : 54,7 Mb
Release : 1994
Category : Technology & Engineering
ISBN : 9251035814
Author : John F. Craig
Publisher : John Wiley & Sons
Page : 920 pages
File Size : 55,6 Mb
Release : 2016-01-12
Category : Technology & Engineering
ISBN : 9781118394403
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 : P. Hart,T.J. Pitcher
Publisher : Springer Science & Business Media
Page : 610 pages
File Size : 47,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401105637
The African lakes are an extremely important ecosystem and the subject of much study relating to species introductions and loss of biodiversity. This book provides a thorough review of the whole subject and will be of great interest to fish biologists, fisheries workers, ecologists, environmental scientists and conservationists.
Author : Food and Agriculture Organization of the United Nations. Committee for Inland Fisheries of Africa
Publisher : Unknown
Page : 416 pages
File Size : 50,6 Mb
Release : 1994
Category : Fisheries
ISBN : UOM:39015049366829
Author : Anonim
Publisher : John Wiley & Sons
Page : 384 pages
File Size : 50,8 Mb
Release : 2008-04-15
Category : Technology & Engineering
ISBN : 9780470995686
The current high demand for fish and increased awareness of the role of the environment in supporting human well being has led to a situation where attitudes to inland water resources are changing rapidly. Trends in resource use and environmental impact are very evident in inland waters which are particularly vulnerable as they act as collectors of all the activities occurring in their basins and rank as some of the most endangered ecosystems in the world. The principle changes influencing the evolution of the aquatic resource for fisheries are described in this book, which has been compiled for the Food and Agriculture Organization of the United Nations.
