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There is a general lack of understanding of the role of lipids in aquatic ecosystems. The fundamental purpose of this book is to synthesize the divergent literature on aquatic lipids into a coordinated, digestible form. A large part of the book addresses lipid composition and production in freshwater organisms, with chapters on phytoplankton, zooplankton and benthic invertebrates. A common theme throughout the book is the function of lipids in aquatic food webs, with a chapter devoted exclusively to lipids as indicators of health in fish populations. A complementary chapter highlights the role of lipids and essential fatty acids in mariculture. Methodologies to determine the lipid content of aquatic samples and suggestions as to the utility of fatty acids as trophic markers are provided. There is a chapter on the role of lipids in the bioaccumulation and bioconcentration of toxicants and another on the relationships between lipids and surface films and foams. The final chapter highlights the similarities and differences between lipids of marine and freshwater origin. Students and researchers in ecology, phycology, aquatic toxicology, physiological ecology and limnology will find this an invaluable guide and reference

This book is about freshwater fish in streams, lakes, reservoirs, and special habitats around the world. It addresses approximately twenty major topics in freshwater fish ecology in a format suitable for use in graduate-level courses. The book focuses on basic ecology and contains much data from fisheries ecology. Dr. Matthews explains the way in which empirical studies, theoretical concepts, and experimental evaluations blend into the current state-of-the-art with respect to each major topic, and provides original data and interpretations on some points as well as new syntheses. Each chapter contains empirical information, a synthesis, and a summary

What is ecological science? -- How does scale of measurement affect what we see? -- Wonderful water: linkages from the atom to the biosphere -- What's in a lake? -- What's in rivers and streams? -- Fundamental ecological questions -- How are population numbers and structure affected by dispersal? -- Why do organisms occupy particular habitats? -- How do freshwater communities recover from disturbance? -- What is the impact of predators in freshwater systems? -- Applied freshwater ecology -- What are the ecological effects of changing a water regime? -- How do we assess the impact of pollution? -- Can we fix smelly, green lakes? -- What is the impact of introduced species?.

This publication stands out from many others on fish conservation in that it deals exclusively with freshwater fish of European waters. 34 contributions offer up-to-date reviews on the conservation status of freshwater fish in 10 European countries and research results in genetics, systematics and ecology of more that 20 endangered European fish taxa. Selected examples show the changes in the fish communities of whole catchment areas under human influence in the past decades.Not only scientists in fish biology, but also fishery managers and hydraulic engineers will find new insights into the biology of endangered fish species and basic data in order to elaborate specific conservation measures for the local survival of these taxa

Comprehensive handbook of seafood information!This definitive reference is the most comprehensive handbook of information ever assembled on foods and other products from fresh and marine waters. Marine and Freshwater Products Handbook covers the acquisition, handling, biology, and the science and technology of the preservation and processing of fishery and marine products. The array of topics covered includes: aquaculture fisheries management, and harvesting o fish meal and fish oil o fish protein concentrates o seaweed products o products from shell o other industrial products o bioactive com

Global climate change is a certainty. The Earth's climate has never remained static for long and the prospect for human-accelerated climate change in the near future appears likely. Freshwater systems are intimately connected to climate in several ways: they may influence global atmospheric processes affecting climate; they may be sensitive early indicators of climate change because they integrate the atmospheric and terrestrial events occurring in their catchments; and, of course, they will be affected by climate change. An improved predictive understanding of environmental effects on pattern and process in freshwater ecosystems will be invaluable as a baseline upon which to build sound protection and management policies for fresh waters. This book represents an early step towards this improved understanding. The contributors accepted the challenge to assume global warming of 2-5oC in the next century. They then explored the implications of this scenario on various freshwater ecosystems and processes. To provide a broader perspective, Firth and Fisher included several chapters which do not deal expressly with freshwater ecosystems, but rather discuss climate change in terms of causes and mechanisms, implications for water resources, and the use of remote sensing as a tool for expanding studies from local to global scale

Since the limnological research on the man-made Brokopondo Reservoir in the 'sixties, numerous data have been collected on the ecology of Surinam rivers and swamps. This book is a compilation of these data: it is the first comprehensive survey of the aquatic ecology of one of the peripheral areas of Amazonia. The geomorphology of the country, situated on the Guyana Shield, is the main factor determining the limnological properties of rivers and creeks. This results in an overall picture that is quite different from Amazonia. The emphasis of The Ecosystems of Suriname is on the living aquatic resources, including aquatic and swamp vegetation, phyto and zooplankton, macroinvertebrates, fish, amphibians, reptiles and mammals. Although most of Suriname is still in a pristine state, the human impact on fresh waters is considerable in those areas of rapid economic development, emphasizing the necessity of conservation measures, specially tailored for aquatic ecosystems. The Ecosystems of Suriname is a valuable acquisition for all scientists, environmental managers and others interested in tropical aquatic ecology

The management of water supply and quality in lakes, rivers, and reservoirs has proceeded largely on the basis of local rather than global considerations. High-quality freshwater resources are now in critically short supply, not only because of local problems such as over-irrigation and eutrophication, but also as a result of large-scale impacts such as climate effects on the hydrosphere. This book explores the dichotomy of global strategies (international and generic) versus local strategies (site-specific) for lake, river, and reservoir management, and presents a series of contrasting perspectives on topics that include monitoring, modeling, water treatment, eutrophication, and restoration. The final chapter integrates these perspectives and identifies strengths, weaknesses, and complementary aspects of the two approaches to help refine future strategies for the sustainable use of the world's freshwater resources

1 Water and Man -- 1.1 Historical Setting -- 1.2 Management of the Water Cycle -- 2 Freshwater Ecosystems -- 2.1 Introduction -- 2.2 Classification of Organisms -- 2.3 Food Chains and Trophic Pyramids -- 2.4 Distribution of Species -- 2.5 Ecological Balance -- 2.6 Community Structure -- 2.7 Still and Flowing Waters -- 2.8 Biological Productivity -- 3 Biological Indicators -- 3.1 Introduction -- 3.2 Selection of Indicators -- 3.3 Individuals and Populations as Indicators -- 3.4 Community Structure as an Indicator -- 3.5 Functional Changes in Communities -- 3.6 Bioaccumulative Indicators -- 4 Environmental Stress -- 4.1 Natural environmental stresses -- 4.2 Imposed Environmental Stresses -- 4.3 Environmental Manipulation -- 4.4 Combined Stresses -- 5 Effects of Physical Disturbances -- 5.1 Effects of Suspended Solids -- 5.2 Effects of the Addition of Heat -- 5.3 Effects of Changes in pH -- 6 The Effects of Organic Enrichment -- 6.1 Introduction -- 6.2 General Effects of Organic Discharges -- 6.3 Physical and Chemical Changes -- 6.4 Biological Changes -- 6.5 Field Studies of Organic Pollution -- 7 Effects of Toxic Materials -- 7.1 Introduction -- 7.2 Physiological Responses to Poisons -- 7.3 Terminology and Criteria -- 7.4 Factors Which Affect Toxicity -- 7.5 Predicting the Toxicity of Combinations of Poisons -- 7.6 Inorganic Poisons -- 7.7 Organic Poisons -- 7.8 Heavy Metals -- 7.9 Pesticides -- 7.10 Polychlorinated Biphenyls -- 8 Laboratory Evaluation of Pollutants -- 8.1 Introduction -- 8.2 Experimental and Laboratory Investigations -- 9 Field Assessments of Environmental Quality -- 9.1 Introduction -- 9.2 Sampling Methods -- 9.3 Sampling Strategies and Programmes -- 9.4 Biotic Indices and Data Analysis -- 10 Biological Surveillance in Environmental Management -- 10.1 Aquatic Resource Management -- 10.2 Basin Management Concepts -- 10.3 Application and Implementation of Uniform Standards -- 10.4 Environmental Impact Statements and Conservation -- 10.5 Future Developments -- Appendices -- 1 Trent Biotic Index -- 2 Chandler Biotic Score -- 3 Biological Monitoring Working Party (BMWP) — Score -- ReferenceS.

This indispensable guide provides a comprehensive treatment of the construction and analysis of models for age- and stage-classified populations. It covers methods based on projection matrices, delay-differential equations, and partial-differential equations. The book addresses both field and laboratory studies on a wide range of specific ecosystems and taxa, as well as problems in evolution, genetics, conservation biology and epidemiology