Review Of Tropical Reservoirs And Their Fisheries

Author : P. A. van Zwieten
Publisher : Food & Agriculture Organization of the UN (FAO)
ISBN 13 : 9789251067413
Total Pages : 0 pages
Book Rating : 4.14/5 ( download)

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Download or read book Review of Tropical Reservoirs and Their Fisheries written by P. A. van Zwieten and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A considerable quantity of data and information were collected on many aspects of the systems of the three reservoirs, including hydrological, biophysical and limnological features, primary production, and fish and fisheries data. This information was condensed and synthesized with the aim of providing a baseline against which the ecological changes that have taken place since impoundment can be described and analysed. Efforts are made to explain changes in fish catch in relation to climatic variations, ecological succession and fishing effort. The review shows that biological data and information are generally available. However, as is also common elsewhere, all three cases suffer from the general tendency to isolate and compartmentalize research into separate disciplines.

Author : B‚n‚
Publisher : WorldFish
ISBN 13 :
Total Pages : 117 pages
Book Rating : 4./5 ( download)

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Download or read book Improved fisheries productivity and management in tropical reservoirs written by B‚n‚ and published by WorldFish. This book was released on with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : P. A. van Zwieten
Publisher : Food & Agriculture Organization of the UN (FAO)
ISBN 13 : 9789251067413
Total Pages : 168 pages
Book Rating : 4.14/5 ( download)

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Download or read book Review of Tropical Reservoirs and Their Fisheries written by P. A. van Zwieten and published by Food & Agriculture Organization of the UN (FAO). This book was released on 2011 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: A considerable quantity of data and information were collected on many aspects of the systems of the three reservoirs, including hydrological, biophysical and limnological features, primary production, and fish and fisheries data. This information was condensed and synthesized with the aim of providing a baseline against which the ecological changes that have taken place since impoundment can be described and analysed. Efforts are made to explain changes in fish catch in relation to climatic variations, ecological succession and fishing effort. The review shows that biological data and information are generally available. However, as is also common elsewhere, all three cases suffer from the general tendency to isolate and compartmentalize research into separate disciplines.

Author : Ainsworth, R., Cowx, I.G., Funge-Smith, S.J.
Publisher : Food & Agriculture Org.
ISBN 13 : 9251338264
Total Pages : 325 pages
Book Rating : 4.61/5 ( download)

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Download or read book 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 published by Food & Agriculture Org.. This book was released on 2021-01-21 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9251307938
Total Pages : 399 pages
Book Rating : 4.39/5 ( download)

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Download or read book Review of the state of the world fishery resources: Inland fisheries written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-11-05 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9251308136
Total Pages : 128 pages
Book Rating : 4.34/5 ( download)

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Download or read book 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 published by Food & Agriculture Org.. This book was released on 2019-02-01 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Author : Nasr-Allah, A.M.
Publisher : WorldFish
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4./5 ( download)

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Download or read book Value chain analysis of Lake Nasser fisheries in Aswan, Upper Egypt written by Nasr-Allah, A.M. and published by WorldFish. This book was released on 2016-05-10 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report documents the outputs of the Aswan fisheries value chain study that took place in January and February 2015. This value chain analysis forms part of the Youth Employment in Aswan Governorate (YEAG) project funded by the Swiss Agency for Development and Cooperation (SDC) and led by CARE Egypt in partnership with WorldFish. The aim of the YEAG project is to increase incomes and employment for youth, women and men in Aswan by focusing on improving the performance of key value chains and enhancing the enabling environment. The current study concentrates on mapping and documenting fisheries value chains from fishers to retailers to identify the scope for job creation, livelihood improvement and poverty reduction.

Author : John F. Craig
Publisher : John Wiley & Sons
ISBN 13 : 1118394402
Total Pages : 920 pages
Book Rating : 4.03/5 ( download)

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Download or read book Freshwater Fisheries Ecology written by John F. Craig and published by John Wiley & Sons. This book was released on 2016-01-12 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Sanjeev Sharma
Publisher : John Wiley & Sons
ISBN 13 : 1119696321
Total Pages : 324 pages
Book Rating : 4.22/5 ( download)

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Download or read book Wetlands Conservation written by Sanjeev Sharma and published by John Wiley & Sons. This book was released on 2021-09-15 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wetlands Conservation An up-to-date overview of approaches for addressing wetlands degradation and its effects on ecosystem services, human health, and other ecosystems Wetlands are essential sources of biodiversity, water purification, groundwater replenishment, flood control, storm protection, sediment retention, recreation and tourism, and more. Human exploitation of natural resources over the past 200 years has caused significant wetlands degradation and loss. Although the Ramsar Convention of 1971 drafted polices for wetland conservation and responsible use, many wetland sites remain inadequately conserved or managed. Maintaining the ecological balance and equilibrium of wetlands requires a clear understanding of the vital role of wetlands, the difficulties they face, and the policies enacted for their protection. Wetlands Conservation: Current Challenges and Future Strategies summarizes both current and emerging management strategies, trends, and policies regarding wetlands protection around the world. The authors provide accurate scientific information on wetlands while discussing the effects of climate change, global warming, modernization in agriculture, and other key topics. Designed to assist in the development of future solutions for wetlands conservation and management strategies, this important volume: Highlights the environmental, socioeconomic, and cultural importance of wetlands Identifies the factors responsible for the failure of many conservation initiatives Describes the natural and anthropogenic factors of wetlands degradation Discusses the role of community-based wetlands conservation and management Explores Ramsar wetlands conservation and its impacts worldwide Wetlands Conservation: Current Challenges and Future Strategies is an invaluable resource for graduate and postgraduate students, researchers, ecologists, policymakers, conservation organizations, and others working in the field of natural resources management.

Author : Terje Tvedt
Publisher : Bloomsbury Publishing
ISBN 13 : 178673138X
Total Pages : 592 pages
Book Rating : 4.88/5 ( download)

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Download or read book A History of Water: Series III, Volume 3 written by Terje Tvedt and published by Bloomsbury Publishing. This book was released on 2016-08-31 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Major changes in policy and management , across the entire agricultural production chain, will be needed to ensure the best use of available water resources in meeting growing demands for food and other agricultural products. This new volume in the successful History of Water Series focuses on the African continent to address this key issue. Humanity has its roots in Africa and many of our food systems developed there. All types of agricultural production are present and the sheer size of the continent offers wide ecological variation from extreme desert to dense rainforest. Drawing together leading international contributors from a wide variety of disciplines Water and Food offers new insights into the evolution of food systems, from early hunter gatherers to the global challenges of the modern world.