| Description |
viii, 277 pages : illustrations ; 27 cm |
| Contents |
1. The PER-approach - criteria to rank threats to aquatic ecosystems. 1.1. Introduction and aim. 1.2. Ecosystem analyses - basic concepts. 1.3. Acidifying substances. 1.4. Metals. 1.5. Chlorinated organics. 1.6. Nutrients. 1.7. Conclusions - a ranking of the threats -- 2. Introduction to aquatic ELS-modelling. 2.1. Background and aim. 2.2. Time and area compatibility of data. 2.3. Ecometric matrix. 2.4. Statistical aspects. 2.5. Dynamical and statistical ecosystem modelling. 2.6. Model testing -- 3. Predictive modelling. 3.1. A comprehensive dynamic ELS-model. 3.2. Dynamic ELS-model transformed from empirical model. 3.3. A dynamic model mechanistically derived from an empirical model. 3.4. Comments -- 4. Remedial measures. 4.1. Lake liming. 4.2. Remedial methods to decrease the Hg-content in lake fish. 4.3. Potash treatment as a method to reduce radiocesium levels in lake fish. 4.4. The lake ecosystem index as a tool to evaluate remedial measures. App. The ELS-model for mercury in fish -- App. The dynamic model to simulate the duration of the mercury problem -- App. The LEEDS model |
| Summary |
"Ecosystems throughout the world are threatened by numerous chemicals. Most people have heard about mercury, radioactive substances, dioxins, sulphur and acid rain, and nutrients causing eutrophication effects. How are these chemical threats manifested in real ecosystems? What is threatened and why? What can be done to remediate?" "In spite of the fact that there exist many good textbooks in Ecotoxicology and Ecosystem modelling, there are none which combine the four perspectives in this book: 1. Criteria for ranking chemical threats from the ecosystem perspective, 2. Basic elements of effect-load-sensitivity modelling, 3. Basic structuring and critical modelling tests of practically useful models for water management, and 4. Models to simulate and optimise remedial measures against chemical threats to aquatic ecosystems." "This book ought to attract considerable interest from students in the geosciences and biology, environmental engineers, consultants, administrators and scientists interested in the distribution, ranking, modelling and remediation of effects related to chemical pollutants in aquatic ecosystems."--BOOK JACKET |
| Notes |
Includes index |
| Bibliography |
Bibliography (pages [219] - 229) and index |
| Subject |
Aquatic ecology -- Simulation methods.
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Aquatic ecology.
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Water quality -- Mathematical models.
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Water -- Pollution -- Environmental aspects.
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Water -- Pollution -- Mathematical models.
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Water -- Pollution.
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| LC no. |
99234335 |
| ISBN |
9040718334 |
|
9057820242 |
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