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Ecological Modeling in Risk Assessment
Expanding the risk assessment toolbox, this book provides a comprehensive and practical evaluation of specific ecological models for potential use in risk assessment. Ecological Modeling in Risk Assessment: Chemical Effects on Populations, Ecosystems, and Landscapes goes beyond current risk assessment practices for toxic chemicals as applied to individual-organism endpoints to describe ecological effects models useful at the population, ecosystem, and landscape levels. The authors demonstrate the utility of a set of ecological effects models, eventually improving the ecological relevance of risk assessments and making data collection more cost effective.
Evaluation of Aeration/circulation as a Lake Restoration Technique
Artificial circulation and hypolimnetic aeration are management techniques for oxygenating eutrophic lakes subject to water quality problems, algal blooms, and fishkills. Artificial circulation is achieved by injecting diffused air into lower waters, by mechanical pumping of water from one depth stratum to another, or by inducing turbulence at the surface using large axial-flow pumps. In contrast, hypolimnetic aeration by air or oxygen injection affects primarily bottom waters. In some instances low dissolved oxygen concentrations persist in the metalimnion. In general, both methods lower the concentrations of reduced compounds in lake waters, providing benefits for water supply systems. Aeration may cause supersaturation of nitrogen gas, thereby raising the potential danger of gas bubble disease in downstream fishes.
Evaluation of Aeration/circulation as a Lake Restoration Technique
Artificial circulation and hypolimnetic aeration are management techniques for oxygenating eutrophic lakes subject to water quality problems, algal blooms, and fishkills. Artificial circulation is achieved by injecting diffused air into lower waters, by mechanical pumping of water from one depth stratum to another, or by inducing turbulence at the surface using large axial-flow pumps. In contrast, hypolimnetic aeration by air or oxygen injection affects primarily bottom waters. In some instances low dissolved oxygen concentrations persist in the metalimnion. In general, both methods lower the concentrations of reduced compounds in lake waters, providing benefits for water supply systems. Aeration may cause supersaturation of nitrogen gas, thereby raising the potential danger of gas bubble disease in downstream fishes.
Hydrocarbon Contaminated Soils
The analysis of contaminated soils is a fairly new field that is growing at an incredible rate. To keep you abreast of the vast amount of new information being generated, this important volume presents leading-edge technology in analysis from some of the world's leading technical experts on the subject. The third volume in a series, this book covers the latest practices in remediation, modeling, sampling ,and analysis, as well as regulatory considerations.
Human and Ecological Risk Assessment
- Gegenstand des Buches sind die Abschätzung und die Bewertung von Gesundheitsrisiken - erfaßt werden alle Situationen, in denen Risikobewertungen erforderlich sind - Leser lernt, eine Risikobewertung vorzunehmen - Buch enthält einen theoretischen und einen praktischen Teil - anschaulich ergänzt durch zahlreiche Fallstudien und viele Literaturhinweise
Contaminated Ground Water and Sediment
This book is the documented result of an expert workshop, Modeling and Management of Emerging Environmental Issues, held at Penn State University. This event assembled four panels of modeling experts from the U.S. and Canada to discuss modeling technology development and application in order to promote sound and cost-effective environmental decision-making. This thorough analysis provides an overview on the state-of-the-art in current practice and identifies emerging research and development trends within modeling technology. Each of the discussions considers not only technical issues, but regulatory and cost factors as well.
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