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Author : Peter Biek McIntyre
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.E/5 ( download)
Download or read book The Importance of Fishes in Nutrient Cycling in Tropical Freshwaters written by Peter Biek McIntyre and published by . This book was released on 2006 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C.B.T. Rajagopalsmy
Publisher : Daya Books
ISBN 13 : 9788170352440
Total Pages : 154 pages
Book Rating : 4.3/5 (524 download)
Download or read book Nutrient Dynamics in Freshwater Fish Culture System written by C.B.T. Rajagopalsmy and published by Daya Books. This book was released on 2002-04 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Tatenda Dalu
Publisher : Elsevier
ISBN 13 : 0128223634
Total Pages : 864 pages
Book Rating : 4.1/5 (282 download)
Download or read book Fundamentals of Tropical Freshwater Wetlands written by Tatenda Dalu and published by Elsevier. This book was released on 2021-11-25 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Tropical Freshwater Wetlands: From Ecology to Conservation Management is a practical guide and important tool for practitioners and educators interested in the ecology, conservation and management of wetlands in tropical/subtropical regions. The book is written in such a way that, in addition to scientists and managers, it is accessible to non-specialist readers. Organized into three themed sections and twenty-three chapters, this volume covers a variety of topics, exposing the reader to a full range of scientific, conservation and management issues. Each chapter has been written by specialists in the topic being presented. The book recognizes that wetland conservation, science and management are interlinked disciplines, and so it attempts to combine several perspectives to highlight the interdependence between the various professions that deal with issues in these environments. Within each chapter extensive cross-referencing is included, so as to help the reader link related aspects of the issues being discussed. Contributed to by global experts in the field of tropical wetlands Includes case studies and worked examples, enabling the reader to recreate the work already done Focuses on tropical systems not available in any other book
Author : David Edward Shormann
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (368 download)
Download or read book Nutrient Cycling in Brazos River Oxbow Lakes, with Emphasis on the Importance of Benthivorous Fish written by David Edward Shormann and published by . This book was released on 1996 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : David Dudgeon
Publisher : Elsevier
ISBN 13 : 0080557171
Total Pages : 343 pages
Book Rating : 4.0/5 (85 download)
Download or read book Tropical Stream Ecology written by David Dudgeon and published by Elsevier. This book was released on 2011-05-04 with total page 343 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tropical Stream Ecology describes the main features of tropical streams and their ecology. It covers the major physico-chemical features, important processes such as primary production and organic-matter transformation, as well as the main groups of consumers: invertebrates, fishes and other vertebrates. Information on concepts and paradigms developed in north-temperate latitudes and how they do not match the reality of ecosystems further south is expertly addressed. The pressing matter of conservation of tropical streams and their biodiversity is included in almost every chapter, with a final chapter providing a synthesis on conservation issues. For the first time, Tropical Stream Ecology places an important emphasis on viewing research carried out in contributions from international literature. First synthetic account of the ecology of all types of tropical streams Covers all of the major tropical regions Detailed consideration of possible fundamental differences between tropical and temperate stream ecosystems Threats faced by tropical stream ecosystems and possible conservation actions Descriptions and synstheses life-histories and breeding patterns of major aquatic consumers (fishes, invertebrates)
Author : Simon Goddek
Publisher : Springer
ISBN 13 : 3030159434
Total Pages : 620 pages
Book Rating : 4.0/5 (31 download)
Download or read book Aquaponics Food Production Systems written by Simon Goddek and published by Springer. This book was released on 2019-06-21 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Ro McConnell
Publisher : Cambridge University Press
ISBN 13 : 9780521280648
Total Pages : 404 pages
Book Rating : 4.2/5 (86 download)
Download or read book Ecological Studies in Tropical Fish Communities written by Ro McConnell and published by Cambridge University Press. This book was released on 1987-02-27 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: The result of compiling widely scattered research on fish in tropical rivers, lakes and seas. A comprehensive overview of the ecology of fish communities in freshwater as well as marine environments.
Author : Gordon Dickinson
Publisher : Routledge
ISBN 13 : 1134319371
Total Pages : 327 pages
Book Rating : 4.1/5 (343 download)
Download or read book Ecosystems written by Gordon Dickinson and published by Routledge. This book was released on 2007-05-07 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: In examining both theory and applications, this book, through useful examples, provides a stimulating introduction to ecosystems. It examines the nature, types and characteristics of ecosystems as well as investigating the interactions between various systems and human actions. Using functional ecology as the basis for applying the ecosystem concept in contemporary environmental science and ecology, this second edition of this highly successful volume has been updated to reflect the latest research. It incorporates a strengthened theme in the use of functional ecology in explaining how ecosystems work and how the ecosystem concept may be used in science and applied science, and coverage of the interactions between humans and ecosystems has been substantially bolstered with the addition of chapters on human impacts and large scale impacts on ecosystems, and global environmental change and the consequences for ecosystems. Presented in a student-friendly format, this book features boxed definitions, examples, case studies, summary points, discussion questions and annotated further reading lists. It provides a concise and accessible synthesis of both ecosystem theory and its applications, and will be a valuable resource for students of environmental studies, ecology and geography.
Author : F. Schiemer
Publisher : Springer Science & Business Media
ISBN 13 : 9401733600
Total Pages : 258 pages
Book Rating : 4.4/5 (17 download)
Download or read book The Importance of Aquatic-Terrestrial Ecotones for Freshwater Fish written by F. Schiemer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecotones are interface zones between different ecosystems. Their ecological role and significance with regard to ecological management and conservation has become increasingly appreciated. For the management of freshwater resources, for example, an improved understanding of the role of land/inland water interfaces, will be essential for reducing negative human impacts by engineering, nutrient loading, siltation, etc. The management of ecotones, on the other hand, offers the possibility to control aquatic system processes via stock control of fish populations. Fish apparently are both excellent indicators of ecotone quality as well as determiners of its structure and function.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309069483
Total Pages : 422 pages
Book Rating : 4.3/5 (9 download)
Download or read book Clean Coastal Waters written by National Research Council and published by National Academies Press. This book was released on 2000-08-17 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental problems in coastal ecosystems can sometimes be attributed to excess nutrients flowing from upstream watersheds into estuarine settings. This nutrient over-enrichment can result in toxic algal blooms, shellfish poisoning, coral reef destruction, and other harmful outcomes. All U.S. coasts show signs of nutrient over-enrichment, and scientists predict worsening problems in the years ahead. Clean Coastal Waters explains technical aspects of nutrient over-enrichment and proposes both immediate local action by coastal managers and a longer-term national strategy incorporating policy design, classification of affected sites, law and regulation, coordination, and communication. Highlighting the Gulf of Mexico's "Dead Zone," the Pfiesteria outbreak in a tributary of Chesapeake Bay, and other cases, the book explains how nutrients work in the environment, why nitrogen is important, how enrichment turns into over-enrichment, and why some environments are especially susceptible. Economic as well as ecological impacts are examined. In addressing abatement strategies, the committee discusses the importance of monitoring sites, developing useful models of over-enrichment, and setting water quality goals. The book also reviews voluntary programs, mandatory controls, tax incentives, and other policy options for reducing the flow of nutrients from agricultural operations and other sources.
Download or read book Oxford Bibliographies written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ro McConnell
Publisher : Longman Publishing Group
ISBN 13 :
Total Pages : 364 pages
Book Rating : 4.:/5 (318 download)
Download or read book Fish Communities in Tropical Freshwaters written by Ro McConnell and published by Longman Publishing Group. This book was released on 1975 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Freshwater fish faunas of tropical regions and their distributions. Equatorial forest rivers: ecological conditions and fish communities. Seasonal rivers in the tropics: ecological conditions and fish communities. Lacustrine fish communities-I The great lakes of Eastern Africa. II Some other African lakes. Manmade lakes. The production of tropical freswater fishes for food. Reactions of fishes to conditions in tropical freswaters. Community development.
Author : Cheng-Sheng Lee
Publisher : John Wiley & Sons
ISBN 13 : 1119005582
Total Pages : 382 pages
Book Rating : 4.1/5 (19 download)
Download or read book Dietary Nutrients, Additives and Fish Health written by Cheng-Sheng Lee and published by John Wiley & Sons. This book was released on 2015-05-05 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fish nutrition can be the deciding factor between a robust and healthy farmed fish population and low aquaculture production. In an age where chemicals and antibiotics are under greater scrutiny than ever, a strong understanding of the role of nutrients and feed additives is essential in the aquaculture industry. Dietary Nutrients, Additives and Fish Health is a comprehensive review of dietary nutrients, antinutritional factors and toxins, and non-nutrient dietary additives, and their effects on fish performance and immune system function, as well as overall health. The book opens with an overview of fish immune systems and health. Subsequent chapters delve into proteins and amino acids, lipids and fatty acids, carbohydrates, beta glucans, vitamins, minerals, antinutrients, mycotoxins, nucleotides, prebiotics, probiotics, organic acids and their salts, and plant extracts and their impacts on fish health, growth, and development. The text then concludes with a chapter on feeding practices. Authored by leaders in aquaculture, Dietary Nutrients, Additives and Fish Health will be an invaluable resource to graduate students, researchers and professionals alike.
Author : James F. Kitchell
Publisher : Springer Science & Business Media
ISBN 13 : 1461244102
Total Pages : 561 pages
Book Rating : 4.4/5 (612 download)
Download or read book Food Web Management written by James F. Kitchell and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 561 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series is dedicated to serving the growing community of scholars and practitioners concerned with the principles and applications of environ mental management. Each volume is a thorough treatment of a specific topic of importance for proper management practices. A fundamental objective of these books is to help the reader discern and implement man's stewardship of our environment and the world's renewable re sources. For we must strive to understand the relationship between man and nature, act to bring harmony to it, and nurture an environment that is both stable and productive. These objectives have often eluded us because the pursuit of other individual and societal goals has diverted us from a course of living in balance with the environment. At times, therefore, the environmental manager may have to exert restrictive control, which is usually best applied to man, not nature. Attempts to alter or harness nature have often failed or backfired, as exemplified by the results of imprudent use of herbicides, fertilizers, water, and other agents. Each book in this series will shed light on the fundamental and applied aspects of environmental management. It is hoped that each will help solve a practical and serious environmental problem.
Author : Dedmer B. Van de Waal
Publisher : Frontiers Media SA
ISBN 13 : 2889456218
Total Pages : 382 pages
Book Rating : 4.8/5 (894 download)
Download or read book Progress in Ecological Stoichiometry written by Dedmer B. Van de Waal and published by Frontiers Media SA. This book was released on 2018 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecological stoichiometry concerns the way that the elemental composition of organisms shapes their ecology. It deals with the balance or imbalance of elemental ratios and how that affects organism growth, nutrient cycling, and the interactions with the biotic and abiotic worlds. The elemental composition of organisms is a set of constraints through which all the Earth’s biogeochemical cycles must pass. All organisms consume nutrients and acquire compounds from the environment proportional to their needs. Organismal elemental needs are determined in turn by the energy required to live and grow, the physical and chemical constraints of their environment, and their requirements for relatively large polymeric biomolecules such as RNA, DNA, lipids, and proteins, as well as for structural needs including stems, bones, shells, etc. These materials together constitute most of the biomass of living organisms. Although there may be little variability in elemental ratios of many of these biomolecules, changing the proportions of different biomolecules can have important effects on organismal elemental composition. Consequently, the variation in elemental composition both within and across organisms can be tremendous, which has important implications for Earth’s biogeochemical cycles. It has been over a decade since the publication of Sterner and Elser’s book, Ecological Stoichiometry (2002). In the intervening years, hundreds of papers on stoichiometric topics ranging from evolution and regulation of nutrient content in organisms, to the role of stoichiometry in populations, communities, ecosystems and global biogeochemical dynamics have been published. Here, we present a collection of contributions from the broad scientific community to highlight recent insights in the field of Ecological Stoichiometry.
Author : Erik Jeppesen
Publisher : Springer Science & Business Media
ISBN 13 : 1461206952
Total Pages : 442 pages
Book Rating : 4.4/5 (612 download)
Download or read book The Structuring Role of Submerged Macrophytes in Lakes written by Erik Jeppesen and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid growth of the discipline of aquatic ecology has been driven both by scientific interest in the complexities of aquatic ecosystems and by their enormous environmental importance and sensitivity. This book focuses on the remarkably diverse roles played by underwater plants, and is divided into three parts: 10 thematic chapters, followed by 18 case studies, and rounded off by three integrative chapters. The topics range from macrophytes as fish food to macrophytes as mollusc and microbe habitat, making this of interest to aquatic ecologists as well as limnologists, ecosystem ecologists, microbial ecologists, fish biologists, and environmental managers.
Author : André Megali Amado
Publisher : Frontiers Media SA
ISBN 13 : 2889451275
Total Pages : 146 pages
Book Rating : 4.8/5 (894 download)
Download or read book Microbial Role in the Carbon Cycle in Tropical Inland Aquatic Ecosystems written by André Megali Amado and published by Frontiers Media SA. This book was released on 2017-03-15 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquatic microorganisms are tidily related to the carbon cycle in aquatic systems, especially in respect to its accumulation and emission to atmosphere. In one hand, the autotrophs are responsible for the carbon input to the ecosystems and trophic chain. On the other hand, the heterotrophs traditionally play a role in the carbon mineralization and, since microbial loop theory, may play a role to carbon flow through the organisms. However, it is not yet clear how the heterotrophs contribute to carbon retention and emission especially from tropical aquatic ecosystems. Most of the studies evaluating the role of microbes to carbon cycle in inland waters were performed in high latitudes and only a few studies in the tropical area. In the prospective of global changes where the warm tropical lakes and rivers become even warmer, it is important to understand how microorganisms behave and interact with carbon cycle in the Earth region with highest temperature and light availability. This research topic documented microbial responses to natural latitudinal gradients, spatial within and between ecosystems gradients, temporal approaches and temperature and nutrient manipulations in the water and in the sediment.
