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Modelling In Ecotoxicology

Author: S.E. Jorgensen
Publisher: Elsevier
ISBN: 1483291073
Size: 50.66 MB
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Ecotoxicology is the science of toxic substances in the environment and their impact on living organisms. Today we use many more chemicals in everyday life than we did 30-40 years ago. Our knowledge of the fate and effect of such chemicals in the environment has not yet followed the rate of chemical innovation in spite of our expanding knowledge of ecotoxicology. About 50,000 different chemicals are produced on an industrial scale, but we have only sufficient data to evaluate the environmental consequences of a few per cent of these. The need for ecotoxicological knowledge has never been more pronounced than it is today. Even more resources must be allocated in this field in the near future, if we are to be able to cope with the threat of more toxic chemical compounds in our environment. This book outlines the state of the art of modelling the fate and effects of toxic substances in the environment. Modelling in ecotoxicology differs from modelling in other fields by the great lack of data. The quality of the models is very dependent on the parameters used, and as we do not have a wide knowledge of parameters in ecotoxicological processes, good parameter estimation methods are crucial for ecotoxicolocal models. A comprehensive review of available parameter estimation methods is therefore included in this volume. Model examples and case studies have also been included to illustrate the difficulties and short comings in practical modelling.

Fundamentals Of Ecological Modelling

Author: S.E. Jorgensen
Publisher: Elsevier
ISBN: 9780444535689
Size: 45.31 MB
Format: PDF
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Fundamentals of Ecological Modelling: Applications in Environmental Management and Research, Fourth Edition, provides a comprehensive discussion of the fundamental principles of ecological modeling. The first two editions of this book (published in 1986 and 1994) focused on the roots of the discipline the four main model types that dominated the field 30-40 years ago: (1) dynamic biogeochemical models; (2) population dynamic models; (3) ecotoxicological models; and (4) steady-state biogeochemical and energy models. The third edition focused on the mathematical formulations of ecological processes that are included in ecological models. This fourth edition uses the four model types previously listed as the foundation and expands the latest model developments in spatial models, structural dynamic models, and individual-based models. As these seven types of models are very different and require different considerations in the model development phase, a separate chapter is devoted to the development of each of the model types. Throughout the text, the examples given from the literature emphasize the application of models for environmental management and research. Presents the most commonly used model types with a step-by-step outline of the modeling procedure used for each Shows readers through an illustrated example of how to use each model in research and management settings New edition is revised to include only essential theory with a focus on applications Includes case studies, illustrations, and exercises (case study of an ecological problem with full illustration on how to solve the problem)

Fundamentals Of Ecological Modelling

Author: Sven Erik Jørgensen
Publisher: Elsevier
ISBN: 0080440150
Size: 51.82 MB
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This is a thoroughly revised and updated edition of an authoritative introduction to ecological modelling. Sven Erik Jørgensen, Editor-in-Chief of the journal Ecological Modelling, and Giuseppe Bendoricchio, Professor of Environmental Modelling at the University of Padova, Italy, offer compelling insights into the subject. This volume explains the concepts and processes involved in ecological modelling, presents the latest developments in the field and provides readers with the tools to construct their own models. The Third Edition features: • A detailed discussion and step-by-step outline of the modelling procedure. • An account of different model types including overview tables, examples and illustrations. • A comprehensive presentation of the submodels and unit processes used in modelling. • In-depth descriptions of the latest modelling techniques. • Structured exercises at the end of each chapter. • Three mathematical appendices and a subject index. This practical and proven book very effectively combines the theory, methodology and applications of ecological modelling. The new edition is an essential, up-to-date guide to a rapidly growing field.

Fundamentals Of Ecological Modelling

Author: Sven Erik J2rgensen
Publisher: Elsevier Science Limited
ISBN: 9780444815729
Size: 58.78 MB
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This book is a completely revised version of the 1986 edition. It is considerably expanded and is accompanied by a diskette with modeling programmes. The work presents a general introduction to the rapidly growing field of ecological and environmental modeling. Its aim is to give on the one hand an overview of the field and on the other to teach the reader to develop his own models. These objectives are met by covering the following points: discussion of the modeling procedure in detail and presentation of the development of models step by step; presentation of most model types by use of theory, overview tables on applications, complexity, examples and illustrations; presentation of both simple and complex models; and a ready available software, that contains several small models the reader can use for training in the elementary steps of modeling. Furthermore, the individual chapters can be read independently, which renders it feasible to tailor the book to any course in ecological and environmental modeling.

Fundamentals Of Aquatic Toxicology

Author: Gary M. Rand
Publisher: CRC Press
ISBN: 9781560320913
Size: 12.39 MB
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This text is divided into three parts. The first part describes basic toxicological concepts and methodologies used in aquatic toxicity testing, including the philosophies underlying testing strategies now required to meet and support regulatory standards. The second part of the book discusses various factors that affect transport, transformation, ultimate distribution, and accumulation of chemicals in the aquatic environment, along with the use of modelling to predict fate.; The final section of the book reviews types of effects or endpoints evaluated in field studies and the use of structure-activity relationships in aquatic toxicology to predict biological activity and physio-chemical properties of a chemical. This section also contains an extensive background of environmental legislation in the USA and within the European Community, and an introduction to hazard/risk assessment with case studies.

Handbook Of Estimation Methods In Ecotoxicology And Environmental Chemistry

Author: Sven E. Jorgensen
Publisher: CRC Press
ISBN: 9781566702119
Size: 79.19 MB
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Slightly more than 100,000 chemicals are produced in such an amount that they are threatening to the environment. These include common chemicals such as household cleaners, detergents, cosmetics, medicines, and pesticides. The Handbook of Estimation Methods in Ecotoxicology and Environmental Chemistry presents estimation methods for determining a number of physicochemical, biological, and toxicological parameters for these chemicals. Included is WinTox software, an estimation tool that is quick and easy to use; it provides a good initial estimate that can be further refined. Through the estimation methods demonstrated in this book, the following urgent questions can be answered:

Ecotoxicology Modeling

Author: James Devillers
Publisher: Springer Science & Business Media
ISBN: 9781441901972
Size: 18.20 MB
Format: PDF, ePub, Docs
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Ecotoxicology Modeling is a comprehensive and well-documented text providing a collection of computational methods to the ecotoxicologists primarily interested in the study of the adverse effects of chemicals, their mechanisms of action and/or their environmental fate and behavior. Avoiding mathematical jargon, the book presents numerous case studies to enable the reader to understand the interest but also the limitations of linear and nonlinear models in ecotoxicology. Written by an international team of scientists, Ecotoxicology Modeling is of primary interest to those whose research or professional activity is directly concerned with the development and application of models in ecotoxicology. It is also intended to provide the graduate and post-graduate students with a clear and accessible text covering the main types of modeling approaches used in environmental sciences.

Freshwater Field Tests For Hazard Assessment Of Chemicals

Author: Ian R. Hill
Publisher: CRC Press
ISBN: 1351447041
Size: 58.93 MB
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Freshwater field tests are an integral part of the process of hazard assessment of pesticides and other chemicals in the environment. This book brings together international experts on microcosms and mesocosms for a critical appraisal of theory and practice on the subject of freshwater field tests for hazard assessment. It is an authoritative and comprehensive summary of knowledge about freshwater field tests, with particular emphasis on their optimization for scientific and regulatory purposes. This valuable reference covers both lotic and lentic outdoor systems and addresses the choice of endpoints and test methodology. Instructive case histories show how to extrapolate test results to the real world.

Ecotox

Author: L.A. Jørgensen
Publisher: Elsevier
ISBN: 044459969X
Size: 33.50 MB
Format: PDF, Kindle
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This CD-ROM provides the facts, abstracts and figures needed to build environmental models together with information on the environmental effects of chemical substances. The data has been rigorously selected from scientific journals covering 25 years. Environmental models included cover a wide range of topics, including eutrophication, dispersion of chemical compounds, growth and competition of different organisms as well as models which describe global environmental cycles. Ecotoxicological information on substances includes the water concentrations at which aquatic organisms are affected by the chemical compounds. These concentrations are used in the regulation of releases and for calculating safe concentration levels in the environment. The growth of environmental toxicological data and the growth of different types of environmental models has been a major new development in this field. ECOTOX: Ecological Modelling and Ecotoxicology presents ecotoxicological information about more than 2000 chemical substances, including such data as growth parameters, lethal concentrations (LC50), emissions, degradation of chemical substances, background concentrations, concentration factors, biological effects, octanol/water partition coefficients, excretion and uptake rates, emissions and composition of living organisms. Accompanying this information are the constants and equations to be used in environmental models, and abstracts from scientific journals to give an explanation concerning the scope of the data. All this information is directed towards environmental modelling, administration of environmental regulations, scientific models, environmental policy making and environmental impact assessment. NEW FROM APRIL 2001 - http://www.enviromod.subnet.dk/Ecological and Environmental Modeling - An Interactive Internet Course

Ecological Modelling

Author: Sven Erik Jørgensen
Publisher: WIT Press
ISBN: 1845644085
Size: 79.93 MB
Format: PDF, Kindle
View: 1389
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Addressing the basic concepts of ecological modelling, Jorgensen provides the user with a tool which can assist in the understanding of what various model types/network calculations can do, as well as outlining when to use which type as a tool to solve a specific problem.