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Books > Professional & Technical > Agriculture & farming > Aquaculture & fishing: practice & techniques

Aquaculture Law and Policy - Global, Regional and National Perspectives (Hardcover): Nigel Bankes, Irene Dahl, David L.... Aquaculture Law and Policy - Global, Regional and National Perspectives (Hardcover)
Nigel Bankes, Irene Dahl, David L. VanderZwaag
R3,029 Discovery Miles 30 290 Shipped within 7 - 12 working days

With aquaculture operations fast expanding around the world, the adequacy of aquaculture-related laws and policies has become a hot topic. This much-needed book provides a comprehensive guide to the complex regulatory seascape. Split into three distinct parts, the expert contributors first review the international legal dimensions, including chapters on the law of the sea, trade, and access and benefit sharing for aquatic genetic resources. Part Two discusses how the EU and regional bodies, such as the North Atlantic Salmon Conservation Organization (NASCO), have addressed aquaculture development and management whilst the final part contains twelve national case studies exploring how leading aquaculture producing countries have been putting sustainability principles into practice. These case studies focus on implementation approaches and challenges, in particular emphasizing ongoing national struggles in attaining effective aquaculture zoning and marine spatial planning. Students and scholars of environmental law and politics will find this contemporary volume an invaluable addition to the limited academic literature critiquing aquaculture law and policy. Policy makers, international bodies and NGOs will also find its insights particularly informative when ensuring sustainable aquaculture regulation and development.

Aquaponic Gardening - A Step-by-Step Guide to Raising Vegetables and Fish Together (Paperback): Sylvia Bernstein Aquaponic Gardening - A Step-by-Step Guide to Raising Vegetables and Fish Together (Paperback)
Sylvia Bernstein
R398 R303 Discovery Miles 3 030 Save R95 (24%) Shipped within 7 - 12 working days

Aquaponics is a revolutionary system for growing plants by fertilising them with the waste water from fish in a sustainable closed system. A combination of the best of aquaculture and hydroponics, aquaponic gardening is an amazingly productive way to grow organic vegetables, greens, herbs and fruits, while providing the added benefits of fresh fish as a safe, healthy source of protein. On a larger scale, it is a key solution to mitigating food insecurity, climate change, groundwater pollution and the impacts of overfishing on our oceans. This is the definitive do-it-yourself home manual, with an introduction by Charlie Price, head of Aquaponics UK. It focuses on giving you all the tools you need to create your own aquaponic system and enjoy healthy, safe, fresh and delicious food all year round. Starting with an overview of the theory, benefits and potential of aquaponics, this book goes on to explain: system location considerations and hardware components; the living elements - fish, plants, bacteria, and worms; and, putting it all together - starting and maintaining a healthy system. Aquaponics systems are completely organic. They are four to six times more productive and use 90 percent less water than conventional gardens. Other advantages include no weeds, fewer pests, and no watering, fertilising, bending, digging, or heavy lifting - in fact, there really is no down side! Anyone interested in taking the next step towards self-sufficiency will be fascinated by this practical, accessible and well-illustrated guide.

Eat Like a Fish - My Adventures As a Fisherman Turned Restorative Ocean Farmer (Hardcover): Bren Smith Eat Like a Fish - My Adventures As a Fisherman Turned Restorative Ocean Farmer (Hardcover)
Bren Smith
R352 R287 Discovery Miles 2 870 Save R65 (18%) Shipped within 7 - 11 working days
Silver Shoals - Five Fish That Made Britain (Paperback): Charles Rangeley-Wilson Silver Shoals - Five Fish That Made Britain (Paperback)
Charles Rangeley-Wilson 1
R236 R197 Discovery Miles 1 970 Save R39 (17%) Shipped within 7 - 11 working days

On these rain-swept islands in the North Atlantic man and fish go back a long way. Fish are woven through the fabric of the country's history: we depend on them - for food, for livelihood and for fun - and now their fate depends on us in a relationship which has become more complex, passionate and precarious in the sophisticated 21st Century. In Silver Shoals Charles Rangeley-Wilson travels north, south, east and west through the British Isles tracing the histories, living and past, of our most iconic fish - cod, carp, eels, salmon and herring - and of the fishermen who catch them and care for them. In the company of trawlermen, longshoremen, conservationists and anglers Charles goes to sea in a trawler, whiles away hot afternoons setting eel nets, tries to bag his first elusive carp and drifts for herring on Guy Fawkes night as fireworks starburst the sky. Underscoring this journey is a fascinating historical exploration of these creatures that have shaped our island story. We learn how abundant and valued these fish were centuries before our current crisis of over-fishing: we learn how eels built our monasteries, how cod sank the Spanish Armada, how fish and chips helped us through two World Wars. Of course there is a deeper environmental dimension to the story, but Charles' optimistic perspective is this: no one is more invested in fish than the fishermen whose lives depend on them. If we can find a way to harness that passion then the future of fish and fishermen in Britain could be as extraordinary as its past.

Fish Disease - Diagnosis and Treatment (Hardcover, 2nd Edition): Edward J. Noga Fish Disease - Diagnosis and Treatment (Hardcover, 2nd Edition)
Edward J. Noga
R2,983 R2,269 Discovery Miles 22 690 Save R714 (24%) Shipped within 7 - 13 working days

"Fish Disease: Diagnosis and Treatment, Second Edition" provides thorough, yet concise descriptions of viral, bacterial, fungal, parasitic and noninfectious diseases in an exhaustive number of fish species. Now in full color with over 500 images, the book is designed as a comprehensive guide to the identification and treatment of both common and rare problems encountered during the clinical work-up. Diseases are discussed following a systems-based approach to ensure a user-friendly and practical manual for identifying problems.

"Fish Disease: Diagnosis and Treatment, Second Edition" is the must-have reference for any aquaculturists, aquatic biologists, or fish health specialists dealing with diagnosing or treating fish diseases.

Atlantic Cod - A Bio-Ecology (Hardcover, illustrated edition): David Righton, Julian Metcalfe, George Rose Atlantic Cod - A Bio-Ecology (Hardcover, illustrated edition)
David Righton, Julian Metcalfe, George Rose
R3,166 R2,224 Discovery Miles 22 240 Save R942 (30%) Shipped within 7 - 13 working days

Not only is the cod one of the most valuable marine food fish it is also important as a predator in ocean ecosystems and is the subject of a great deal of research into its biology and exploitation. In recent years world stocks of commercially fished cod have collapsed, most famously the Northern cod stocks of the North East Coast of Canada. Now, massively falling catches in the North Sea have led to the recent heavy cuts in catch quotas. This important book is a comprehensive handbook, covering all major aspects of the cod including biology, ecology, life histories, behaviour, commercial exploitation and conservation. Written by world experts on the species, this book is an essential purchase for all fisheries scientists, managers and fish biologists.

The European Landing Obligation - Reducing Discards in Complex, Multi-Species and Multi-Jurisdictional Fisheries (Hardcover,... The European Landing Obligation - Reducing Discards in Complex, Multi-Species and Multi-Jurisdictional Fisheries (Hardcover, 1st ed. 2019)
Sven Sebastian Uhlmann, Clara Ulrich, Steven J. Kennelly
R1,154 R953 Discovery Miles 9 530 Save R201 (17%) Shipped within 7 - 12 working days

This open access book provides a comprehensive examination of the European Landing Obligation policy from many relevant perspectives. It includes evaluations of its impacts at economical, socio-cultural, ecological and institutional levels. It also discusses the feasibility and benefits of several potential mitigation strategies. The book was timely published, exactly at the time where the Landing Obligation was planned to be fully implemented. This book is of significant interest to all stakeholders involved, but also to the general public of Europe and to other jurisdictions throughout the world that are also searching for ways to deal with by-catch and discard issues.

Goods and Services of Marine Bivalves (Hardcover, 1st ed. 2019): Aad C. Smaal, Joao G. Ferreira, Jon Grant, Jens K. Petersen,... Goods and Services of Marine Bivalves (Hardcover, 1st ed. 2019)
Aad C. Smaal, Joao G. Ferreira, Jon Grant, Jens K. Petersen, Oivind Strand
R1,174 R972 Discovery Miles 9 720 Save R202 (17%) Shipped within 7 - 12 working days

The aim of this open access book is to review and analyse the goods and services of bivalve shellfish. How they are defined, what determines the ecological functions that are the basis for the goods and services, what controversies in the use of goods and services exist, and what is needed for sustainable exploitation of bivalves from the perspective of the various stakeholders. The book is focused on the goods and services, and not on impacts of shellfish aquaculture on the benthic environment, or on threats like biotoxins; neither is it a shellfish culture handbook although it can be used in evaluating shellfish culture. The reviews and analysis are based on case studies that exemplify the concept, and show the strengths and weaknesses of the current applications. The multi-authored reviews cover ecological, economic and social aspects of bivalve goods and services. The book provides new insights for scientists, students, shellfish producers, policy advisors, nature conservationists and decision makers. This book is open access under the CC BY license.

Vanishing Fish - Shifting Baselines and the Future of Global Fisheries (Hardcover): Daniel Pauly Vanishing Fish - Shifting Baselines and the Future of Global Fisheries (Hardcover)
Daniel Pauly; Foreword by Jennifer Jacquet
R511 R404 Discovery Miles 4 040 Save R107 (21%) Shipped within 7 - 12 working days

"Daniel Pauly is a friend whose work has inspired me for years." --Ted Danson, actor, ocean activist, and co-author of Oceana "This wonderfully personal and accessible book by the world's greatest living fisheries biologist summarizes and expands on the causes of collapse and the essential actions that will be required to rebuild fish stocks for future generations." --Dr. Jeremy Jackson, ocean scientist and author of Breakpoint The world's fisheries are in crisis. Their catches are declining, and the stocks of key species, such as cod and bluefin tuna, are but a small fraction of their previous abundance, while others have been overfished almost to extinction. The oceans are depleted and the commercial fishing industry increasingly depends on subsidies to remain afloat. In these essays, award-winning biologist Dr. Daniel Pauly offers a thought-provoking look at the state of today's global fisheries--and a radical way to turn it around. Starting with the rapid expansion that followed World War II, he traces the arc of the fishing industry's ensuing demise, offering insights into how and why it has failed. With clear, convincing prose, Dr. Pauly draws on decades of research to provide an up-to-date assessment of ocean health and an analysis of the issues that have contributed to the current crisis, including globalization, massive underreporting of catch, and the phenomenon of "shifting baselines," in which, over time, important knowledge is lost about the state of the natural world. Finally, Vanishing Fish provides practical recommendations for a way forward--a vision of a vibrant future where small-scale fisheries can supply the majority of the world's fish.

Finfish Aquaculture Diversification (Hardcover): Nathalie Le Francois, Malcolm Jobling, Chris Carter, Pierre Blier Finfish Aquaculture Diversification (Hardcover)
Nathalie Le Francois, Malcolm Jobling, Chris Carter, Pierre Blier
R3,703 Discovery Miles 37 030 Shipped within 7 - 12 working days

There is considerable global interest in the culture of finfish species both for cold and warm water aquaculture development and growth. Essential information on the biology, domestication and aquacultural characteristics of a wide selection of novel and established species is provided in the form of technical sheets, species descriptions and information on current rearing practices, making this a must-have reference in the field of aquacultural science. The book also offers a basic framework in order to support investment strategies for research and developement efforts aimed at the emergence of a profitable finfish aquaculture industry and presents a rationale for species diversification, different approaches to species selection and basic economical and market considerations governing the launch of strategic development and commercialization efforts.

Antioxidants and Functional Components in Aquatic Foods (Hardcover): Hordur G Kristinsson Antioxidants and Functional Components in Aquatic Foods (Hardcover)
Hordur G Kristinsson
R3,859 R2,920 Discovery Miles 29 200 Save R939 (24%) Shipped within 7 - 13 working days

"Antioxidants and Functional Components in Aquatic Foods" compiles for the first time the past and present research done on pro and antioxidants in aquatic animals. The book addresses an area of extreme importance for aquatic foods, since lipid oxidation leads to such a large number of quality problems. Many of these problems are also seen in other muscle based foods, but are exaggerated in aquatic foods, so the book's contents will be of great use and interest to other fields. Written by top researchers in the field, the book offers not only general overviews of lipid oxidation in aquatic foods and aquatic food pro and antioxidant systems, but also covers specifics and gives the latest information on the key pro and anti-oxidants derived from aquatic foods as well as some of the most recent and innovative means to control lipid oxidations in aquatic foods and food systems with fish oils. Coverage includes the latest research on the effects aquatic foods have on oxidative stress in the human body, an area of great interest recently. Additionally, a chapter is devoted to the latest techniques to measure antioxidative potential of aquatic foods, an area still in development and one very important to the antioxidant research community.

"Antioxidants and Functional Components in Aquatic Foods" will be of great interest to the food science, medical, biochemical and pharmaceutical fields for professionals who deal with aquatic food products, muscle foods products (beef, pork, poultry etc), lipid oxidation, and pro-oxidant and antioxidant systems.

Bacterial Fish Pathogens - Disease of Farmed and Wild Fish (Hardcover, 6th ed. 2016): Brian Austin, Dawn A. Austin Bacterial Fish Pathogens - Disease of Farmed and Wild Fish (Hardcover, 6th ed. 2016)
Brian Austin, Dawn A. Austin
R4,890 R4,128 Discovery Miles 41 280 Save R762 (16%) Shipped within 7 - 12 working days

This book puts emphasis on the isolation, taxonomy, diagnosis (phenotypic, serology and molecular biology), epizootiology, pathogenicity mechanisms, and methods of disease control (by vaccination, immunostimulation, probiotics, prebiotics, plant products, and antimicrobial compounds. Co-infections, which are attributed to more than one microbial species have been discussed. Shortcomings in knowledge have been highlighted. This sixth edition is the successor to the original version, first published in 1987, and which fills the need for an up-to-date comprehensive text on the biological aspects of the bacterial taxa which cause disease in finfish. The book is primarily targeted at researcher workers, including postgraduate students, and diagnosticians. It is anticipated that the readership will include veterinary microbiologists, public health scientists and microbial ecologists.

The Wake of the Whale - Hunter Societies in the Caribbean and North Atlantic (Hardcover): Russell Fielding The Wake of the Whale - Hunter Societies in the Caribbean and North Atlantic (Hardcover)
Russell Fielding
R549 R494 Discovery Miles 4 940 Save R55 (10%) Shipped within 7 - 11 working days

Despite declining stocks worldwide and increasing health risks, artisanal whaling remains a cultural practice tied to nature's rhythms. The Wake of the Whale presents the art, history, and challenge of whaling in the Caribbean and North Atlantic, based on a decade of award-winning fieldwork. Sightings of pilot whales in the frigid Nordic waters have drawn residents of the Faroe Islands to their boats and beaches for nearly a thousand years. Down in the tropics, around the islands of St. Vincent and the Grenadines, artisanal whaling is a younger trade, shaped by the legacies of slavery and colonialism but no less important to the local population. Each culture, Russell Fielding shows, has developed a distinct approach to whaling that preserves key traditions while adapting to threats of scarcity, the requirements of regulation, and a growing awareness of the humane treatment of animals. Yet these strategies struggle to account for the risks of regularly eating meat contaminated with methylmercury and other environmental pollutants introduced from abroad. Fielding considers how these and other factors may change whaling cultures forever, perhaps even bringing an end to this way of life. A rare mix of scientific and social insight, The Wake of the Whale raises compelling questions about the place of cultural traditions in the contemporary world and the sacrifices we must make for sustainability. Publication of this book was supported, in part, by a grant from Furthermore: a program of the J. M. Kaplan Fund.

Shrimp Farming and Mangrove Loss in Thailand (Hardcover, illustrated edition): Edward B. Barbier, Suthawan Sathirathai Shrimp Farming and Mangrove Loss in Thailand (Hardcover, illustrated edition)
Edward B. Barbier, Suthawan Sathirathai
R2,429 Discovery Miles 24 290 Shipped within 7 - 12 working days

In many tropical countries, mangrove forests are a crucial component of coastal resources. Nowhere is this more evident than in Thailand where their continued destruction due to shrimp farm expansion is impacting upon forestry, fisheries and the quality of the coastal environment. In addition to the environmental damage caused, mangrove loss is also a serious social problem. Many people live and work among the mangrove forests and the destruction of the resources and ecological functions these forests provide affect the economic livelihoods and cultural heritage of many communities. Against these losses must be weighed the considerable commercial and foreign exchange benefits of shrimp aquaculture and production, which is a major export industry in Thailand. Through in-depth case studies of local communities in four distinct coastal areas in Southern Thailand, the authors are able to assess objectively the underlying economic causes, and consequences, of mangrove deforestation due to the expansion of shrimp farms. Economists, ecologists, sociologists and coastal management specialists will all welcome this unique inter-disciplinary appraisal of the ecological, economic and social implications of shrimp farm expansion and mangrove conversion. It will also be of particular value to international and national policymakers concerned with coastal management in tropical countries.

Spatial Pattern Dynamics in Aquatic Ecosystem Modelling - UNESCO-IHE PhD Thesis (Paperback): Hong Li Spatial Pattern Dynamics in Aquatic Ecosystem Modelling - UNESCO-IHE PhD Thesis (Paperback)
Hong Li
R1,445 Discovery Miles 14 450 Shipped within 7 - 12 working days

In this work, several modelling approaches are explored to represent spatial pattern dynamics of aquatic populations in aquatic ecosystems by the combination of models, knowledge and data in different scales.

It is shown that including spatially distributed inputs retrieved from Remote Sensing images, a conventional physically-based Harmful Algal Bloom model can be enhanced. Also, Cellular Automata based models using high resolution photographs prove to be good in representing aquatic plant growth. Multi-Agent Systems can capture well the spatial patterns exhibited in GIS density maps. A synthesis modelling framework was developed to include biological/ecological growth and diffusive processes, and local effects in conventional modelling framework. The results of the complementary modelling paradigms investigated in this research can be of help in achieving a sustainable environmental management strategy.

Alternative Protein Sources in Aquaculture Diets (Hardcover): Chhorn. Lim, Cheng-Sheng Lee, Carl D Webster Alternative Protein Sources in Aquaculture Diets (Hardcover)
Chhorn. Lim, Cheng-Sheng Lee, Carl D Webster
R2,880 Discovery Miles 28 800 Shipped within 7 - 12 working days

A unique resource that describes the ingredients included in an aquaculture diet, species profiles, processing methods, impacts to environment and industry, and more! Aquaculture is and will remain a major food producing sector in the future. To become more efficient and successful in the aquaculture industry, operations need to provide good nutrition. Alternative Protein Sources in Aquaculture Diets is a unique source describing the ingredients included in fish and crustacean diets, their nutrient compositions, species profiles, suitability for species, processing methods, and impacts of alternative ingredients on the environment and to the aquaculture industry. World-renowned nutritionists and feed technologists explore practical ways for the aquaculture industry to expand and remain competitive, and discuss ways to develop less expensive alternative sources or protein. Diet costs take up a huge chunk of operating expenditures, with fish meal being one of the most expensive ingredients in the aquaculture diet. Alternative Protein Sources in Aquaculture Diets provides detailed knowledge on the use of alternative plant and animal protein sources, offering opportunities to either partially or completely replace fish meal. This comprehensive, up-to-date text discusses the most widely used ingredients as well as various previously under-utilized ingredients which could be of significant potential in the future. The book is extensively referenced and includes numerous helpful tables to clearly present data. Topics discussed in Alternative Protein Sources in Aquaculture Diets (for finfish and crustacean species) include: * farmed fish diet requirements * reduction of waste through diet formulation * poultry by-product meal * meat packing by-products * soybean protein foodstuffs * cottonseed meal * lupins * unconventional plant protein supplements * and much, much more! Alternative Protein Sources in Aquaculture Diets is an essential resource for aquaculturists, nutritionists, feed formulators, feed mill operators, extension specialists, fish farmers and producers, ingredient suppliers, and policymakers.

The Salmon Way - An Alaska State of Mind (Hardcover): Amy Gulick The Salmon Way - An Alaska State of Mind (Hardcover)
Amy Gulick
R574 R449 Discovery Miles 4 490 Save R125 (22%) Shipped within 7 - 11 working days
Fish Pheromones and Related Cues (Hardcover): P W Sorensen, Brian D Wisenden Fish Pheromones and Related Cues (Hardcover)
P W Sorensen, Brian D Wisenden
R3,850 R2,911 Discovery Miles 29 110 Save R939 (24%) Shipped within 7 - 13 working days

Pheromones are chemical cues that pass between members of the same species that convey specific, adaptive information. These cues, and related chemicals whose function are less well defined, are especially important to fishes because of their aquatic environments and complex behaviors. Pheromones are also of increasing interest in both basic and applied aspects of fish biology because they can be used to manipulate fish behavior and may explain phenomena such as fishery collapse. Fish Pheromones and Related Cues provides a timely synthesis of this growing body of research in freshwater and marine species and explores everything from how these chemical signals evolved, are produced, released and then processed, and finally to potential applications in fish culture and conservation. Fish Pheromones and Related Cues opens with a useful overview on the theory of chemical communication and definitions. Chapters then progress by examining the biological importance of pheromones in inter- and intra-species communication, the role these chemical cues play in a variety biological functions from reproduction to predation, and then how they evolved and are detected and recognized by fish nervous systems. Final chapters provide valuable insight into how pheromones can be measured, how pheromonal disruption can explain effects of environmental pollution, and lastly how they pheromones are being applied in real-world efforts to culture fish species and to conserve our wild populations and control invasive species. With far-reaching economic, evolutionary and ecological implications, Fish Pheromones and Related Cues will be an essential volume for anyone working in the fields of chemical communication, fish biology, fisheries science, aquatic conservation, ecology, invasive species control, and aquaculture

The Tragedy of the Commodity - Oceans, Fisheries, and Aquaculture (Hardcover): Stefano B. Longon, Rebecca Clausen, Brett Clark The Tragedy of the Commodity - Oceans, Fisheries, and Aquaculture (Hardcover)
Stefano B. Longon, Rebecca Clausen, Brett Clark
R2,504 Discovery Miles 25 040 Shipped within 7 - 11 working days

Although humans have long depended on oceans and aquatic ecosystems for sustenance and trade, only recently has human influence on these resources dramatically increased, transforming and undermining oceanic environments throughout the world. Marine ecosystems are in a crisis that is global in scope, rapid in pace, and colossal in scale. In The Tragedy of the Commodity, sociologists Stefano B. Longo, Rebecca Clausen, and Brett Clark explore the role human influence plays in this crisis, highlighting the social and economic forces that are at the heart of this looming ecological problem. In a critique of the classic theory "the tragedy of the commons"" by ecologist Garrett Hardin, the authors move beyond simplistic explanations - such as unrestrained self-interest or population growth - to argue that it is the commodification of aquatic resources that leads to the depletion of fisheries and the development of environmentally suspect means of aquaculture. To illustrate this argument, the book features two fascinating case studies - the thousand-year history of the bluefin tuna fishery in the Mediterranean and the massive Pacific salmon fishery. Longo, Clausen, and Clark describe how new fishing technologies, transformations in ships and storage capacities, and the expansion of seafood markets combined to alter radically and permanently these crucial ecosystems. In doing so, the authors underscore how the particular organization of social production contributes to ecological degradation and an increase in the pressures placed upon the ocean. The authors highlight the historical, political, economic, and cultural forces that shape how we interact with the larger biophysical world. A path-breaking analysis of overfishing, The Tragedy of the Commodity yields insight into issues such as deforestation, biodiversity loss, pollution, and climate change.

Commerical Fishing - The Wider Ecological Impacts (Paperback): G Moore, Simon Jennings Commerical Fishing - The Wider Ecological Impacts (Paperback)
G Moore, Simon Jennings
R992 R713 Discovery Miles 7 130 Save R279 (28%) Shipped within 7 - 13 working days

Fishing provides food, income and employment for millions of people. However, fishing has environmental costs that threaten rare species, marine ecosystems and the sustainability of the resource.

Based on the research expertise of leading scientists, "Commercial Fishing: the Wider Ecological Impacts" provides a lively, timely and accessible account of fishing activities and their impacts on marine habitats, biodiversity and species of conservation concern. It covers fishing methods that range from trawling in the Antarctic to fishing with dynamite in the tropics.

The authors show how habitats such as the muddy sea beds of the deep sea, kelp forests and coral reefs are affected by fishing and how birds, mammals, turtles and sea snakes both suffer and benefit from fishing activities. They also look to the future, highlighting ways to make fishing gear 'environmentally friendly' and asking whether marine reserves will improve conservation.

Electricity in Fish Research and Management - Theory and Practice (Hardcover, 2nd Edition): W R C Beaumont Electricity in Fish Research and Management - Theory and Practice (Hardcover, 2nd Edition)
W R C Beaumont
R1,809 R1,281 Discovery Miles 12 810 Save R528 (29%) Shipped within 7 - 13 working days

Electricity in Fish Research and Management, 2nd Edition provides a comprehensive discussion of the uses of both electricity and electrical principles in fishery management and research. It covers electric fishing (including theory, equipment, data analysis and practical factors affecting efficiency), fish barriers, fish counters and fish welfare issues. The book concentrates on Electric Fishing (or Electrofishing); an internationally accepted and widely used procedure for sampling fish. Over the past 50 years electric fishing has become a standard method for fishery studies and management e.g. establishing population densities and abundance. However, due to the potential hazards of the method (both to operators and fish) there is a continuing need to develop and promote best practice guidelines. The author has studied fish ecology for 40 years and understands the need for information that reaches out to all levels of understanding in the field. Previous books on this subject have either been collections of scientific papers and/or technical reports or very simple instruction manuals. In this book theory and practice is explained using non-technical language and simple equations. It brings depth as well as breadth in both information and principles behind the methods and should be an invaluable tool to both fisheries managers and researchers. Although the book is aimed at undergraduates, the clear explanation of the factors means that the book is suitable for all levels of practitioners.

Success Factors for Fish Larval Production (Hardcover): Luis Conceicao, Amos Tandler Success Factors for Fish Larval Production (Hardcover)
Luis Conceicao, Amos Tandler
R4,239 R2,965 Discovery Miles 29 650 Save R1,274 (30%) Shipped within 7 - 13 working days

A comprehensive and authoritative synthesis on the successful production of fish larvae Success Factors for Fish Larval Production is a vital resource that includes the most current understanding of larval biology, in the context of larval production. The text covers topics such as how external (environmental and nutritional) and internal (molecular/ developmental/ physiological/ behavioral/ genetic) factors interact in defining the phenotype and quality of fish larvae and juveniles. The expert contributors review broodstock genetics and husbandry, water quality, larval nutrition and feeding, growth physiology, health, metamorphosis, underlying molecular mechanisms, including epigenetics, for development, larval behavior and environmental conditions. Compiled by members of a European Union-funded consortium of top researchers, Success Factors for Fish Larval Production provides a wide-range of authoritative information for the aquaculture industry and academia. In addition to a wealth of information, the authors review research and commercially applicable larval quality indicators and predictors. The successful production of good-quality fish larvae is of vital importance for fish farming and stock enhancement of wild fisheries: * Includes contributions from a consortium of noted researchers and experts in the field * Deals with on how to improve egg quality and larval production via broodstock management and nutrition * Suggests ways to control the phenotype of juveniles and table-size fish via manipulations of the conditions of larval rearing (e.g., epigenetics) * Includes ideas for optimizing diet composition, formulation, and technology * Integrates knowledge and practical experience in order to help advancing excellence in aquaculture Success Factors for Fish Larval Production offers fish biologists, developmental biologists, physiologists and zoologists the most current and reliable information on the topic. All those working in fish aquaculture facilities and hatcheries in particular will find great interest to their commercial operations within this book.

Cenozoic Seas - The View From Eastern North America (Hardcover): Edward J. Petuch Cenozoic Seas - The View From Eastern North America (Hardcover)
Edward J. Petuch
R4,216 Discovery Miles 42 160 Shipped within 7 - 12 working days

The rich fossil record of the Atlantic and Gulf coastal plains of the United States is a gold mine for interested scientists. The last thirty million years of Earth history are superbly chronicled by a succession of fossil assemblages extending from the St. Lawrence River to Florida. Marine scientists, paleontologists, and systematic biologists alike need a thorough guide to interpret this history.

Cenozoic Seas: The View from Eastern North America analyzes the changing geography, the arrival and departures of ecosystems and species, and the affect of climate on living things. The author classifies all of the region's fossil-bearing formations and their contents within a logical, descriptive framework of space and time, providing a clear path for those studying evolution and extinction within specific communities of organisms.

The book is also an excellent field guide for fossil collectors, providing detailed information for all species illustrated. Many organisms have never before been illustrated in a book on fossil shells.

Sustainable Aquaculture - Global Perspectives (Paperback): Carl D Webster, Bana B. Jana Sustainable Aquaculture - Global Perspectives (Paperback)
Carl D Webster, Bana B. Jana
R1,182 Discovery Miles 11 820 Shipped within 7 - 12 working days

Examine the world's leading aquaculture producers! Sustainable Aquaculture: Global Perspectives is a one-of-a-kind primer on the world's leading sources of aquatic production, presenting expert commentary that includes the latest advancements, developments, and research findings. The book examines essential elements of aquaculture (water quality, nutrition, genetics, culture methods) and addresses problems such as over-fishing, coastal and wetland destruction, and habitat and environmental degradation. Sustainable Aquaculture: Global Perspectives addresses policy measures that are essential for the long-term sustainability of the world's fisheries and the long-term employment of those who rely on the aquaculture industry for their livelihood. As the world's population increases at an alarming rate, the question of how to ensure global food security is one of extreme importance. But the world's total yield is below expectations and the book examines the reasons why: the under-utilization of natural resources, the lack of adoption of modern scientific methods, the lack of standardized, proven pond fertilization protocols; long-term inbreeding and the loss of genetic variability due to genetic drift. Sustainable Aquaculture: Global Perspectives also addresses: freshwater pearl culture breeding programs pond fertilization regimes fish diseases in tropical climates indoor recirculating culture systems water quality management for shrimp farming and much more! With much of its information available in one place for the first time, Sustainable Aquaculture: Global Perspectives is invaluable as a textbook for introductory aquaculture courses and is an essential resource for professionals and researchers.

The Economics of Salmon Aquaculture (Hardcover, 2nd Edition): Frank Asche, Trond Bjorndal The Economics of Salmon Aquaculture (Hardcover, 2nd Edition)
Frank Asche, Trond Bjorndal
R2,619 R1,843 Discovery Miles 18 430 Save R776 (30%) Shipped within 7 - 13 working days

First published in 1990, The Economics of Salmon Aquaculture was the first book to systematically analyse the salmon aquaculture industry, from both a market and production perspective. Since publication of the first edition of this book, the salmon aquaculture industry has grown at a phenomenal rate, with salmon now being consumed in more than 100 countries worldwide. This second edition of a very popular and successful book brings the reader right up to date with all the major current issues pertaining to salmon aquaculture. Commencing with an overview of the production process in aquaculture, the following chapters provide in-depth coverage of the sources of the world s supply of salmon, the growth in productivity, technological changes, environmental issues, markets, market structure and competitiveness, lessons that can be learnt from the culture of other species, optimal harvesting techniques, production planning, and investment in salmon farms. Written by Frank Ashe and Trond Bjorndal, two of the world's leading experts in the economics of aquaculture, this second edition of The Economics of Salmon Aquaculture provides the salmon aquaculture industry with an essential reference work, including a wealth of commercially important information. This book is also a valuable resource for upper level students and professionals in aquaculture and economics, and libraries in all universities and research establishments where these subjects are studied and taught should have copies of this important book on their shelves.

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Dawit Tesfamichael, Daniel Pauly Hardcover R3,089 R2,802 Discovery Miles 28 020
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Jeffery C Carrier, Michael R Heithaus, … Hardcover R1,683 Discovery Miles 16 830
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B.B. Jana, R. N. Mandal, … Hardcover R2,925 R2,608 Discovery Miles 26 080
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Ira G. Clark Hardcover R3,301 Discovery Miles 33 010
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Stephen Spotte Hardcover R2,624 R1,848 Discovery Miles 18 480

 

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