Author : Dmitriĭ Sergeevich Pavlov
Publisher : Food & Agriculture Org.
Page : 112 pages
File Size : 25,48 MB
Release : 1989
Category : Nature
ISBN : 9789251028575
Author : Rolando Quirós
Publisher :
Page : 56 pages
File Size : 31,41 MB
Release : 1989
Category : Fishes
ISBN :
Author : A.W.H. Turnpenny
Publisher : WIT Press
Page : 221 pages
File Size : 32,55 MB
Release : 2014-02-10
Category : Technology & Engineering
ISBN : 1845648498
Countless millions of fish disappear into water abstractions used for power generation, water supply, irrigation and other uses. As fish stocks become depleted, increasingly, countries around the world see this as a threat to sustainability and are seeking to minimise these losses through legislation and introduction of best practice guidance on fish screening. In March 2011 the Institute of Fisheries Management, in the United Kingdom, organised a two-day conference which attracted international experts from the UK, Europe and the USA. Presenting key papers from the meeting this book will be of interest to academics, students, practitioners and environmental regulators everywhere.
Author : Sébastien Erpicum
Publisher : CRC Press
Page : 1101 pages
File Size : 38,11 MB
Release : 2016-12-01
Category : Science
ISBN : 1498781497
In an increasingly urbanized world, water systems must be designed and operated according to innovative standards in terms of climate adaptation, resource efficiency, sustainability and resilience. This grand challenge triggers unprecedented questions for hydro-environment research and engineering. Shifts in paradigms are urgently needed in the way we view (circular) water systems, water as a renewable energy (production and storage), risk management of floods, storms, sea level rise and droughts, as well as their consequences on water quality, morphodynamics (e.g., reservoir sedimentation, scour, sustainability of deltas) and the environment. Addressing these issues requires a deep understanding of basic processes in fluid mechanics, heat and mass transfer, surface and groundwater flow, among others.
Author : Rudolf Berka
Publisher : Food & Agriculture Org.
Page : 156 pages
File Size : 10,46 MB
Release : 1990
Category : Technology & Engineering
ISBN : 9789251029343
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.
Author : Charles H. Clay
Publisher : CRC Press
Page : 260 pages
File Size : 10,19 MB
Release : 2017-12-14
Category : Science
ISBN : 135145577X
This new edition of the best-selling book describes the main types of fishways and fish facilities used around the world to assist the passage of fish over dams and other obstructions to their migration. It also focuses on the protection of fish (mainly young fish) from the hazards encountered in their downstream migrations. The book brings together the type of knowledge and research needed to decide on the facility used as well as its design and operation. It emphasizes the need for both biologists and engineers to collaborate in the design and indicates in what fields such collaboration would benefit fisheries conservation in the future. This is the Second Edition of the only book to bring together all of these topics worldwide under one cover.
Author : Roger S. V. Pullin
Publisher : WorldFish
Page : 367 pages
File Size : 35,7 MB
Release : 1993
Category : Aquaculture
ISBN : 9718709053
Author : John F. Craig
Publisher : John Wiley & Sons
Page : 920 pages
File Size : 32,83 MB
Release : 2016-01-12
Category : Technology & Engineering
ISBN : 1118394402
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 : R.S. Ambasht
Publisher : Springer Science & Business Media
Page : 389 pages
File Size : 45,26 MB
Release : 2012-12-06
Category : Science
ISBN : 1461502217
Organisms and environment have evolved through modifying each other over millions of years. Humans appeared very late in this evolutionary time scale. With their superior brain attributes, humans emerged as the most dominating influence on the earth. Over the millennia, from simple hunter-food gatherers, humans developed the art of agriculture, domestication of animals, identification of medicinal plants, devising hunting and fishing techniques, house building, and making clothes. All these have been for better adjustment, growth, and survival in otherwise harsh and hostile surroundings and climate cycles of winter and summer, and dry and wet seasons. So humankind started experimenting and acting on ecological lines much before the art of reading, writing, or arithmetic had developed. Application of ecological knowledge led to development of agriculture, animal husbandry, medicines, fisheries, and so on. Modem ecology is a relatively young science and, unfortunately, there are so few books on applied ecology. The purpose of ecology is to discover the principles that govern relationships among plants, animals, microbes, and their total living and nonliving environmental components. Ecology, however, had remained mainly rooted in botany and zoology. It did not permeate hard sciences, engineering, or industrial technologies leading to widespread environmental degradation, pollution, and frequent episodes leading to mass deaths and diseases.
Author : Barry A. Costa-Pierce
Publisher : World Bank Publications
Page : 72 pages
File Size : 32,45 MB
Release : 1997-01-01
Category : Nature
ISBN : 9780821339954
With external financial help and advice, Poland has made great strides toward sustainable growth. The country's currency is stable, its international creditworthiness has been restored, and its private sector now accounts for two-thirds of GDP. This review evaluates the overall relevance, efficacy, and efficiency of World Bank assistance to Poland and finds that the Bank's technical advice and intellectual support were pivotal in facilitating the work of Polish reformers. The book explores various stages in the evolution of the Bank's assistance to Poland: systemic and institutional transformation and social improvement; private sector and infrastructure development; implementation and supervision; and, results and recommendations. Boxes, figures, and tables illustrate the Bank's assistance strategy, including information on the distribution of Bank resources among Central Eastern and European countries, total Bank commitments to Poland by fiscal year, and a summary of the strengths and weaknesses of Bank assistance to Poland.
