Bibliothèque de L'IMIST/CNRST

Papers from the International Symposium on Freshwater and Estuarine Radioecology.

The Chernobyl accident drew attention to the difficulties of understanding the dynamics of radionuclide transport through the environment using older methods developed after the pseudo steady state pollution resulting after the weapons testing fallout. More recent approaches, which are reported in this book, have incorporated both the dynamic aspects highlighted by the pulse Chernobyl input and the importance of improvement in models that can be brought about by constraining parameters on the basis of a knowledge of the fundamental physics, chemistry, biology and ecology of the ecosystems involved. The papers within this volume include hydrodynamic models of suspended solids transport, ion exchange interpretation of radionuclide sorption: approaches applying a knowledge of membrane transport kinetics to the uptake of radionuclides by biota; the effects of different ecological niches on the relative uptake of radionuclides by different species; kinetic models of radionuclide uptake through trophic chains and the success and failure of different countermeasures attempted after the Chernobyl accident.

Includes bibliographical references and index.

Selected papers: Preface. Modelling of radiocesium in lakes and mdash; on predictive power and lessons for the future (L.Håkanson). Present thoughts on the aquatic countermeasures applied to regions of the Dnieper river catchment contaminated by the 1986 Chernobyl accident (O. Voitsekhovitch and others). The role of a spring river as a source of 137Cs in a lagoon environment: the case of the Stella river (Marano lagoon, Northern Adriatic Sea) (M. Belli and others). Mobilization studies of 137Cs in sediments from Rochedo Reservoir, Goi and acirc;nia, Go., Brazil (M.E.M. De Luca, J.M. Godoy). Migration and modelling of tritium in waste water reservoirs and a retention pond (M. Fukui). Long-term kinetics of radiocesium fixation by soils (A. Konoplev and others). On the differential binding mechanisms of radiostrontium and radiocaesium in sediments (M.J. Madruga, A. Cremers). Recent radioecological investigations in the Austrian part of the Danube river (F.J. Maringer and others). Contamination of fish with 137Cs in Kiev reservoir and old river bed of Pripyat near Chernobyl (R.H. Hadderingh and others). Radioecology assessment in waterways in France with nuclear facilities (1989-1993) (L. Foulquier, A. Lambrechts). The modelling concept for the radioactive contamination of waterbodies in RODOS, the decision support system for nuclear emergencies in Europe (W. Raskob and others).

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