Author: C.B.T. Rajagopalsmy
Publisher: Daya Books
ISBN: 9788170352440
Category : Fishes
Languages : en
Pages : 154
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Book Description
Quality seed, feed and fertilizer are known to decree target fish yield in any type of aquaculture system. Among these vital factors, the right type and input schedule of fertilizers have gathered much scientific concern. Obviously, phosphorus the major limiting nutrient of freshwater culture system has been studied in detail by various workers. However, there is brevity of information on the colossal loss of money encountered by the fisheries sector engrossed in freshwater culture due to the transformation of phosphatic fertilizers into non-recyclable apatite phosphorus. This book provides the first hand information on the utilization of sodium tripolyphosphate in hard water fish culture system for relegating the formation of apatite. The merit of such investigations lie in the fact that the development of a proper phosphatic fertilization schedule for hard water will hold good for brackishwater fish pond also. The results of the present investigation affirm the fact that apatite occurs as the second major constituent of total sedimentary phosphorus. Though the chemical reactions leading to the formation of apatite in aquatic ecosystems remain as a riddle, many of the field trials fortify the operation of the phenomenon of apatite formation in aquaculture system. The present study focuses its prime attention over this crucial reality and advocates the benefits of utilizing sodium tripolyphosphate as a phosphatic fertilizer in aquaculture system. The authors are convinced that intensive field trails in this regard would pave way for the most aspired blue revolution. Contents: Chapter 1: Introduction, Chapter 2: Sample Collection and Methods; Field Experiments on the Dynamics of N and P, Experiment on Regeneration of Sedimentary Nutrients, Experiment on the Hydrolysis of Polyphosphate, Chapter 3: Salient Physico-Chemical Characteristics of the Experimental Ponds; Results, Water Temperature, Secchi Disc Regarding, pH, Dissolved Oxygen, Water Hardness, Carbonate Alkalinity, Bicarbonate Alkalinity, Chlorphyll a , Net Productivity, Assimilation Number, Discussion, Chapter 4: Nitrogen Cycle, Chapter 5: Chemical Species of Nitrogen in Water and Sediment; Results, Ammonia-N, Nitrite-N, Nitrate-N, Exchangeable Ammonia-N (E-NH3-N), Exchangeable Nitrite-N (E-NO2-N), Exchangeable Nitrite-N (E-NO3-N), Sedimentary Organic Nitrogen (SON), Discussion, Chapter 6: Phosphorus Cycle, Chapter 7: Chemical Species of Phosphorus in Water and Sediment; Results, Soluble Inorganic Phosphorus (SIP), Soluble Organic Phosphorus (SOP), Particulate Phosphorus (PP), Polyphosphate-P (PyP), Neutral Hydrolysable Phosphorus (NH-P), Phosphorus Bound to Carbonate (CO3-P), Phosphorus Bound to Oxides of Iron and Manganese (O-Fe and Mn-P), Phosphorus Bound to Iron and Aluminium (Fe and Al-P), Apatite Phosphorus (A-P), Phosphorus Bound to Organic Matter (Po), Residual Phosphorus (R-P), Regeneration of Nitrogen and Phosphorus from Sediment, Hydrolysis of Polyphosphate, Nitrogen: Phosphorus Ration, Fish Production, Discussion, Chapter 8: Conclusion.
Author: C. B. T. Rajagopalsamy
Publisher:
ISBN: 9789390371044
Category : Fish culture
Languages : en
Pages :
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Book Description
Author: Richard Soderberg W.
Publisher: CRC Press
ISBN: 1351762184
Category : Science
Languages : en
Pages : 272
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Book Description
Key features: Takes a quantitative approach to the science of aquaculture Covers the complete landscape of the scientific basis of fish culture Promotes problem solving and critical thinking Includes sample problems at the end of most chapters Guides the reader through the technical considerations of intensive aquaculture, including fish growth rates, hydraulic characteristics of fish rearing units, oxygen consumption rates in relation to oxygen solubility and fish tolerance of hypoxia, and water reconditioning by reaeration and ammonia filtration. Discusses the environmental effects of aquaculture Includes a chapter on hatchery effluent control to meet receiving water discharge criteria Aquaculture Technology: Flowing Water and Static Water Fish Culture is the first book to provide the skills to raise fish in both a flowing water and a static water aquaculture system with a pragmatic and quantitative approach. Following in the tradition of the author’s highly praised book, Flowing Water Fish Culture, this work will stand out as one that makes the reader understand the theory of each type of aquaculture system; it will teach the user "how to think" rather than "what to think" about these systems. The book presents the scientific basis for the controlled husbandry of fish, whether it be in a stream of water or a standing water pool. Part 1, Flowing Water Fish Culture, is a major revision of the author’s initial book and includes greatly expanded coverage of rearing unit design criteria, fish growth and the use of liquid oxygen, hatchery effluent control, and recirculating systems. Part 2, Static Water Fish Culture, presents the scientific basis of fish culture in standing water systems including nutrient and dissolved gas dynamics, pond ecology, effects of fertilization and supplemental feeding, water quality management and representative static water aquacultures. Aquaculture Technology conveys the science in a manner appropriate for use by university students and teachers and others involved in fish production and aquaculture research and development worldwide. It will enable the reader to adapt to changing technologies, markets, and environmental regulations as they occur.
Author: Simon Goddek
Publisher: Springer
ISBN: 3030159434
Category : Science
Languages : en
Pages : 620
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Book Description
This open access book, written by world experts in aquaponics and related technologies, provides the authoritative and comprehensive overview of the key aquaculture and hydroponic and other integrated systems, socio-economic and environmental aspects. Aquaponic systems, which combine aquaculture and vegetable food production offer alternative technology solutions for a world that is increasingly under stress through population growth, urbanisation, water shortages, land and soil degradation, environmental pollution, world hunger and climate change.
Author: Hillary S. Egna
Publisher: CRC Press
ISBN: 1351454064
Category : Science
Languages : en
Pages : 476
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Book Description
The culmination of over a decade's worth of research by the Pond Dynamics/Aquaculture Collaborative Research Support Program (CRSP), Dynamics of Pond Aquaculture not only explains the physical, chemical, and biological processes that interact in pond culture systems, but also presents real-world research findings and considers the people who depend on these systems. This book uses data from CRSP field research sites in East Africa, Southeast Asia, Central America, and North America to present a complete picture of the pond system and the environment in which it exists. A thorough study of the principles and practices of aquaculture, the book reflects the state of the art in pond aquaculture and incorporates recent advances that have changed the science in the last decade or so. It provides a thorough review of the many methods, techniques, and ideas that comprise this complex and fascinating area of study.
Author: R.K. Rath
Publisher: Scientific Publishers
ISBN: 9386347601
Category : Technology & Engineering
Languages : en
Pages : 613
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Book Description
The revised third edition is a comprehensive and better illustrated book covering the major aspects of freshwater aquaculture within Asiatic region with particular focus on the Indian context. In the present revised edition, an attempt has been made not only to update the information but also three additional chapters such as Biotechnology in Aquaculture, Fisheries Extension Education and Ornamental Fish Production and Management are incorporated for the graduate and postgraduate students in the subject concerned. Hope this book would facilitate the teaching of the subject in Colleges and Universities as per their syllabi.
Author: A.J. Zijpp
Publisher: BRILL
ISBN: 9086865968
Category : Business & Economics
Languages : en
Pages : 311
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Book Description
"Throughout the last century, specialisation and intensification were buzz words for farmers in the Western world. However, this approach has not resulted in sustainable development as evidenced by the fact that scientists now need to create technologies to reduce negative impacts. In this book we demonstrate that an alternative exists. Case studies from Bangladesh, Thailand, and Vietnam show that integration and diversification increase both farm productivity and farmers’ incomes. By adopting a participatory approach, farmers and scientists identified a range of technologies that strengthen the positive impacts of integrated aquaculture-agriculture systems for the environment. This book is a collection of refereed papers on a controversial subject in agricultural development. Arguing that sustainability of fish culture in ponds needs a new paradigm - feed the pond to grow fish - two chapters focus on nutrient cycling in such systems. Another chapter makes the case for breeding Nile tilapia for resource poor farmers and presents practical options to avoid the pitfalls that arise from natural tilapia mating in low-input ponds. The book contains chapters on livelihood and development aspects and ends with a general discussion completing the picture of the integrated aquaculture-agriculture systems. Overall it composes a review which addresses one of the key issues of the new century: how to sustainably produce food without compromising environmental integrity."
Author: A. Hillbricht-Ilkowska
Publisher: Springer Science & Business Media
ISBN: 9401116024
Category : Science
Languages : en
Pages : 362
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Book Description
Ecotones, or boundary zones between land and inland waters (such as lakes, streams and rivers), are the principal routes for transport of organic matter and nutrients across landscapes via physical and biological vectors. The ecotone is the place of cumulation and transformation of in situ production as well as of allochthonous material from adjacent aquatic and terrestrial systems. The ecotype functions as an important barrier or filter for principal nutrients, such as phosphorus and nitrogen, responsible for the eutrophication and degradation of surface waters. Intensive forest cutting, agriculture, pollution and bank regulation, urbanization and hydrotechnical constructions seriously endanger the ecotone systems and damage their protective function. It is vital to develop a scientific understanding of the behaviour of phosphorus and nitrogen in these transitional boundary habitats. Such an understanding is important for the rational protection, management and restoration of ecotones connected with lakes and rivers. The importance of nutrient cycling and retention is discussed from the point of view of ecotone function, management and reconstruction in order to sustain its protective role for water bodies. Various types of land/water transitory zones are discussed: wetlands, lake littoral systems, riparian zones of rivers, streams and brooks, the contact zones between groundwater and surface waters of lakes and rivers, air--water interfaces, and patch/ecotone structures in watersheds.
Author: David Little
Publisher: Food & Agriculture Org.
ISBN: 9789251050552
Category : Business & Economics
Languages : en
Pages : 192
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Book Description
Integrated farming in Asia is either considered an eco-friendly good that should be preserved for environmental reasons or a poor practice that will soon be superseded by industrial aquaculture. This report finds that most livestock-fish integration is sound business conducted by entrepreneurs accessing urban markets where the price of fish is relatively low. It can be used as part of a strategy to reduce environmental impacts of intensive livestock production and to produce low-cost food. Farmers have proved adept at both developing their systems to meet their own needs and diversifying the role of ponds, fish and livestock within their complex livelihoods.
Author:
Publisher:
ISBN:
Category : Aquaculture
Languages : en
Pages : 436
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Book Description
