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Radionuclides In Natural Terrestrial Ecosystems
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Book Synopsis Radionuclides in natural terrestrial ecosystems by : S E (Stewart) Allen
Download or read book Radionuclides in natural terrestrial ecosystems written by S E (Stewart) Allen and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecosystems to be found in the maritime temperate zone are described. The part played by vegetation, animals and soils in the distribution and movement of radionuclides is discussed, with particular reference to natural systems. Biomass activities have been compiled for 137Cs and 239+240Pu in woodland and moorland ecosystems. The data indicate that these ecosystems are more effective at intercepting and retaining radionuclides than are agricultural systems and that many undisturbed soils function as efficient sinks.
Book Synopsis Environmental Radionuclides by : Klaus Froehlich
Download or read book Environmental Radionuclides written by Klaus Froehlich and published by Elsevier. This book was released on 2009-09-23 with total page 453 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Radionuclides presents a state-of-the-art summary of knowledge on the use of radionuclides to study processes and systems in the continental part of the Earth's environment. It is conceived as a companion to the two volumes of this series, which deal with isotopes as tracers in the marine environment (Livingston, Marine Radioactivity) and with the radioecology of natural and man-made terrestrial systems (Shaw, Radioactivity in Terrestrial Ecosystems). Although the book focuses on natural and anthropogenic radionuclides (radioactive isotopes), it also refers to stable environmental isotopes, which in a variety of applications, especially in hydrology and climatology, have to be consulted to evaluate radionuclide measurements in terms of the ages of groundwater and climate archives, respectively. The basic principles underlying the various applications of natural and anthropogenic radionuclides in environmental studies are described in the first part of the book. The book covers the two major groups of applications: the use of radionuclides as tracers for studying transport and mixing processes: and as time markers to address problems of the dynamics of such systems, manifested commonly as the so-called residence time in these systems. The applications range from atmospheric pollution studies, via water resource assessments to contributions to global climate change investigation. The third part of the book addresses new challenges in the development of new methodological approaches, including analytical methods and fields of applications. - A state-of-the-art summary of knowledge on the use of radionuclides - Conceived as a companion to the two volumes of this series, which deal with isotopes as tracers
Book Synopsis Radionuclides in Terrestrial Ecosystems by : K. L. Bocock
Download or read book Radionuclides in Terrestrial Ecosystems written by K. L. Bocock and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radioactivity in the Terrestrial Environment by :
Download or read book Radioactivity in the Terrestrial Environment written by and published by Elsevier. This book was released on 2007-03-02 with total page 307 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Radioactivity in the Environment Series addresses the key aspects of this socially important and complex interdisciplinary subject. Presented objectively and with the ultimate authority gained from the many contributions by the world's leading experts, the negative and positive consequences of having a radioactive world around us is documented and given perspective. In a world in which nuclear science is not only less popular than in the past, but also less extensively taught in universities and colleges, this book series will fill a significant educational gap. Radioactivity in the Terrestrial Environment presents an updated and critical review of designing, siting, constructing and demonstrating the safety and environmental impact of deep repositories for radioactive wastes. It is structured to provide a broad perspective of this multi-faceted, multi-disciplinary topic providing enough detail for a non-specialist to understand the fundamental principles involved. Contains extensive references to sources of more detailed information Provides a detailed summary of radioactivity in terrestrial ecosystems, providing a substantial and essential reference on the subject Discusses lesser-known sources of radiation exposure that provide useful information for those seeking to place environmental radioactivity into perspective
Book Synopsis Radionuclides in terrestrial ecosystems by : S E (Stewart) Allen
Download or read book Radionuclides in terrestrial ecosystems written by S E (Stewart) Allen and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The terrestrial ecosystem by : O W (Bill) Heal
Download or read book The terrestrial ecosystem written by O W (Bill) Heal and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The distribution and retention of radionuclides within terrestrial ecosystems varies greatly with both the radionuclide and the environmental conditions. Although there are few direct analogues, understanding of the dynamics of stable isotopes can indicate the general conditions under which major variation in radionuclide mobility will occur. Physico-chemical conditions, particularly those of the soil, strongly influence element retention but superimposed on these conditions, and interacting with them, are the biological processes which control the dynamics of the labile fraction of most elements. Net ecosystem production expresses the complementary biological processes of primary production and decomposition which control the internal element dynamics and the balance of inputs to and outputs from terrestrial ecosystems. Analysis of ecosystem structure and function has shown that, although research often concentrates on relatively stable stages of ecosystem development, element retention is high during the early stages of ecosystem succession through the accumulation of plant biomass and dead organic matter. Element output tends to increase with time reaching a balance with inputs in mature ecosystems. Following disturbance - either natural or induced by man - plant uptake tends to be reduced and decomposition stimulated, resulting in increased output until secondary succession and accumulation is re-established. Aspects of heterogeneity within ecosystems which influence element dynamics are a shifting spatial mosaic, species diversity, the turnover time of components and exceptional climatic events. Research on element dynamics in ecosystems indicates that major factors influencing the mobility of radionuclides in terrestrial systems will be the successional state of the ecosystem and intensity of disturbance. Thus, selection of sites for research on the labile fractions of radionuclides may be critical in assessing the changing pattern of distribution within terre.
Book Synopsis Radionuclides in the Environment by : Clemens Walther
Download or read book Radionuclides in the Environment written by Clemens Walther and published by Springer. This book was released on 2015-10-30 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides extensive and comprehensive information to researchers and academicians who are interested in radionuclide contamination, its sources and environmental impact. It is also useful for graduate and undergraduate students specializing in radioactive-waste disposal and its impact on natural as well as manmade environments. A number of sites are affected by large legacies of waste from the mining and processing of radioactive minerals. Over recent decades, several hundred radioactive isotopes (radioisotopes) of natural elements have been produced artificially, including 90Sr, 137Cs and 131I. Several other anthropogenic radioactive elements have also been produced in large quantities, for example technetium, neptunium, plutonium and americium, although plutonium does occur naturally in trace amounts in uranium ores. The deposition of radionuclides on vegetation and soil, as well as the uptake from polluted aquifers (root uptake or irrigation) are the initial point for their transfer into the terrestrial environment and into food chains. There are two principal deposition processes for the removal of pollutants from the atmosphere: dry deposition is the direct transfer through absorption of gases and particles by natural surfaces, such as vegetation, whereas showery or wet deposition is the transport of a substance from the atmosphere to the ground by snow, hail or rain. Once deposited on any vegetation, radionuclides are removed from plants by the airstre am and rain, either through percolation or by cuticular scratch. The increase in biomass during plant growth does not cause a loss of activity, but it does lead to a decrease in activity concentration due to effective dilution. There is also systemic transport (translocation) of radionuclides within the plant subsequent to foliar uptake, leading the transfer of chemical components to other parts of the plant that have not been contaminated directly.
Book Synopsis Health Impacts of Large Releases of Radionuclides by : John V. Lake
Download or read book Health Impacts of Large Releases of Radionuclides written by John V. Lake and published by John Wiley & Sons. This book was released on 2008-04-30 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-the-minute account examines how radionuclides affect human health. It explores how radionuclides travel through various food chains and how they are transported throughout the terrestrial and aquatic environments.
Book Synopsis Radionuclide Contamination as a Risk Factor in Terrestrial Ecosystems by : Peter Ostoich
Download or read book Radionuclide Contamination as a Risk Factor in Terrestrial Ecosystems written by Peter Ostoich and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radionuclide contamination poses serious hazards for terrestrial ecosystems. Beyond the readily apparent damage to the biota at high doses, low doses of ionizing radiation produce stochastic effects: mutation, carcinogenesis, and genomic instability. The proposed chapter is a review of the biological and ecological effects of radionuclides. The authors discuss, beyond the Chernobyl accident, other contamination events. The review includes the biological and ecological effects of the three principal technogenic contaminants in terrestrial ecosystems: Cs-137, Sr-90, and I-131. Ecological risks to terrestrial small mammals are assessed in detail. In addition, the chapter provides some of the lesser-known methods of remediation and detoxification, including the use of modified natural zeolites as environmental remedies and bio-sorbents. Presented herein is little-known information on environmental protection against radioactive contamination.
Book Synopsis Radionuclides in Terrestrial Ecosystems by : A D (Dave) Horrill
Download or read book Radionuclides in Terrestrial Ecosystems written by A D (Dave) Horrill and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cosmogenic Radionuclides by : Jürg Beer
Download or read book Cosmogenic Radionuclides written by Jürg Beer and published by Springer Science & Business Media. This book was released on 2012-01-19 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmogenic radionuclides are radioactive isotopes which are produced by natural processes and distributed within the Earth system. With a holistic view of the environment the authors show in this book how cosmogenic radionuclides can be used to trace and to reconstruct the history of a large variety of processes. They discuss the way in which cosmogenic radionuclides can assist in the quantification of complex processes in the present-day environment. The book aims to demonstrate to the reader the strength of analytic tools based on cosmogenic radionuclides, their contribution to almost any field of modern science, and how these tools may assist in the solution of many present and future problems that we face here on Earth. The book provides a comprehensive discussion of the basic principles behind the applications of cosmogenic (and other) radionuclides as environmental tracers and dating tools. The second section of the book discusses in some detail the production of radionuclides by cosmic radiation, their transport and distribution in the atmosphere and the hydrosphere, their storage in natural archives, and how they are measured. The third section of the book presents a number of examples selected to illustrate typical tracer and dating applications in a number of different spheres (atmosphere, hydrosphere, geosphere, biosphere, solar physics and astronomy). At the same time the authors have outlined the limitations of the use of cosmogenic radionuclides. Written on a level understandable by graduate students without specialist skills in physics or mathematics, the book addresses a wide audience, ranging from archaeology, biophysics, and geophysics, to atmospheric physics, hydrology, astrophysics and space science.
Book Synopsis Radionuclides in terrestrial ecosystems - interim report by : K L (Ken) Bocock
Download or read book Radionuclides in terrestrial ecosystems - interim report written by K L (Ken) Bocock and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radioecology and the Restoration of Radioactive-Contaminated Sites by : F.F. Luykx
Download or read book Radioecology and the Restoration of Radioactive-Contaminated Sites written by F.F. Luykx and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the nuclear facilities built since the Second World War have ceased active operation and have been decommissioned. Some of the sites are heavily contaminated with radioactive substances. Correct and efficient action to mitigate the radiological consequences of such contamination will only be possible when the behaviour of radionuclides in the terrestrial environment is sufficiently well known. Yet radioecologists often find it difficult to study the transfer of radioactivity in agricultural land and semi-natural ecosystems, because of the complexity and diversity of such environments. The present book presents an analysis of all the factors that affect the behaviour of radionuclides as they move from their point of release through the environment and then enter the tissues of biota living in the ecosystems, in particular plants and animals consumed by humans. The course on which the book is based was held in a region that is heavily contaminated by radioactive discharges into the environment during nuclear weapons fabrication in the 1950s and '60s, and due to a severe accidental release following the explosion of a rad-waste tank in 1957. This allowed in situ training of the students. The book's main emphasis is on specific radioecological problems in severely contaminated areas in the former Soviet Union: the Southern Urals Trail, the rivers Techa-Isert-Tobol-Irtis-Ob, and the 30 km zone around Chernobyl. Systems examined include soils, arable and pasture land, forests, lakes and rivers. Special attention is paid to the effects of radiation on natural ecosystems: trees, soil-dwelling organisms, and aquatic organisms. Synergistic effects are also considered. Short, medium and long term countermeasures are discussed.
Book Synopsis Transfer of Radionuclides in Natural and Semi-Natural Environments by : G. Desmet
Download or read book Transfer of Radionuclides in Natural and Semi-Natural Environments written by G. Desmet and published by Springer. This book was released on 1990-10-31 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text contains the proceedings of the Workshop on The Transfer of Radionuclides in Natural and Semi-Natural Environments, held at the Villa Manin, Passariano (Udine), Italy, 11-15 September 1989.
Book Synopsis Radiation Exposure by : Damijan Balenovic
Download or read book Radiation Exposure written by Damijan Balenovic and published by Nova Science Publishers. This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil is the main source of continuous radiation exposure to humans. It also acts as a medium of migration for transfer of radionuclides to the biological systems and hence, it is the basic indicator of radiological contamination in the environment. In this new book, the authors present current research in the study of the sources, impacts and reduction strategies to radiation exposure. Topics discussed include radiation exposure and protection in conventional paediatric radiology of the thorax; natural and man-made radionuclides in the soil; the current state of terrestrial ecosystems in the Eastern Ural radioactive trace; pharmaceuticals photochemical reactions and radiation exposure in pregnancy and in medical imaging.
Book Synopsis Radionuclide distribution and transport in terrestrial and aquatic ecosystems by : P. J. Coughtrey
Download or read book Radionuclide distribution and transport in terrestrial and aquatic ecosystems written by P. J. Coughtrey and published by . This book was released on 1984 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis RADIOECOLOGY NUC ENERGY IN THE ENVIRONMENT by : Whicker
Download or read book RADIOECOLOGY NUC ENERGY IN THE ENVIRONMENT written by Whicker and published by Springer. This book was released on 1982-05-11 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
