Inland Capture Fisheries Of The Ussr
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Inland Capture Fisheries Of The Ussr
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Author : Rudolf Berka
language : en
Publisher: Food & Agriculture Org.
Release Date : 1990
Inland Capture Fisheries Of The Ussr written by Rudolf Berka 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 1990 with Technology & Engineering categories.
The USSR has about 26 million ha of lakes, 7 million ha of reservoirs and 500 000 km of running waters on which inland fisheries can be practised. The principal characteristics of these water bodies are presented here, together with a survey of the most important species of fish, both indigenous and exotic, inhabiting the lakes and reservoirs. Details of inter-specific fish relationships are also discussed. Annual fish production from all inland waters, including aquaculture, had reached 988 000 tons by 1987. In addition anglers probably landed another 200 000 tons per year. Lake catches accounted for approximately 40-44% of the commercial catches, while the reservoir and riverine cataches contributed 28-34% and 23-30% respectively. Methods of fishery management are discussed, with emphasis on intensification practices. These include the establishment of highly productive fish farms and hatcheris, the conversion of reservoir shallows and small lakes into fish farms, the use of warmed effluent water from power stations, and the problems of introducing and acclimataing new species particularly Coregonidae and Chinese carps. The basic technical designs of fish passes and barriers are described, also details, design and operation of active and passive fishing equipment. Mention is made of legislation which governs fishing in the USSR, and some account is given of the development and current status of fisheries in the Aral and Caspian seas.
Inland Capture Fisheries Of The Ussr Ftp 311
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Author : R. Berka
language : en
Publisher: Palala Press
Release Date : 2018-03-02
Inland Capture Fisheries Of The Ussr Ftp 311 written by R. Berka and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-03-02 with History categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Inland Capture Fisheries Of The Ussr Ftp 311
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Author : R Berka
language : en
Publisher: Palala Press
Release Date : 2015-09-06
Inland Capture Fisheries Of The Ussr Ftp 311 written by R Berka and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-09-06 with categories.
This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Review Of The State Of World Fishery Resources
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Author :
language : en
Publisher:
Release Date : 1999
Review Of The State Of World Fishery Resources written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aquacultural engineering categories.
Review Of The State Of The World Fishery Resources
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Author : R. L. Welcomme
language : en
Publisher:
Release Date : 2011
Review Of The State Of The World Fishery Resources written by R. L. Welcomme and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Aquaculture categories.
The fishery statistics reported to FAO by countries and maintained in the FishStat database are analysed for trends in quantity and composition of catches from 1950 to 2009. Catches have been increasing at a steady rate throughout the period. Fish from inland water capture fisheries are an important source of animal protein, especially in landlocked countries and for populations riparian to lakes and rivers. Finfish contribute about 90 percent of the catch together with some crustaceans and molluscs. The accuracy of reporting of catches by taxonomic group has improved with time and more groups are being reported in 2009 than in 1950. At the same time, the percentage of catches assigned to the generic "freshwater fishes NEI" category has declined. Trends in catches and taxonomic groups are analysed for subcontinental regions under a more general continental heading. The regions are divided mainly by geography, although in some cases economic and political considerations are used. Catches in the various regions of Africa, Asia and South and Central America have risen steadily over the period of the review, although there are local exceptions to the general trend. There is clear evidence that such increases are real in some individual fisheries, but generally the increases are attributed to improvements in reporting, whereby catches that were already there but previously ignored are now being incorporated into the reports. Catches in North America, and most of Europe, have declined in the same period, which is attributed to shifts in economic conditions that make fishing not longer financially viable, and a greater public demand for recreational fishing. Catches from eastern Europe and the Russian Federation declined from a maximum in the 1980s, but have shown some signs of recovery in the last decade. In general, the world's inland fisheries still appear viable although environmental pressures, such as damming, water abstraction and overexploitation, pose a potential threat to the maintenance of present levels of reproduction and recruitment, and hence, ultimately catch.
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.
Report Of The Sixth Session Of The Indo Pacific Fishery Commission Working Party Of Experts On Inland Fisheries
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Author :
language : en
Publisher: Food & Agriculture Org.
Release Date : 1994
Report Of The Sixth Session Of The Indo Pacific Fishery Commission Working Party Of Experts On Inland Fisheries written by 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.
Inland Fisheries
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Author :
language : en
Publisher: John Wiley & Sons
Release Date : 2008-04-15
Inland Fisheries written by and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-04-15 with Technology & Engineering categories.
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.
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).
Inland Waters Fishery And Aquaculture In The Former Ussr
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Author : V.S. Belov
language : en
Publisher:
Release Date : 1990
Inland Waters Fishery And Aquaculture In The Former Ussr written by V.S. Belov and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.