Preface. Section 1: Multiple Stressors: General Overviews. Challenges in Radioecotoxicology; B. Salbu and L. Skipperud.- The Involvement of Pollution with Fish Health; B. Austin.- Effects of Ionizing Radiation combined with other Stressors, on Non-Human Biota; R.E.J. Mitchel et al.- Ecotoxicology - how to assess the Impact of Toxicants in a Multi-Factorial Environment; H. Segner.- A Layperson's Primer on Multiple Stressors; T. Hinton, K. Aizawa.- Section 2: Multiple Exposure Data: What Responses are seen? Effects of Multipollutant Exposures on Plant Populations; S. Geras'kin.- Methodology of Socio-ecological Monitoring using Cytogenetic Methods; A. Gorova and I. Klimkina.- Role of Genetic Susceptibility in Environmental Exposure Induced Diseases; S. Korrea.- Section 3: Multiple Stressor Data: Longterm Effects. Post-Radiated and Post-Stressed Volatile Secretions: Secondary Immune and Behavioral Reactions in Groups of Animals; B. Surinov.- Radiation Induced Genomic Instability in the Offspring of Irradiated Parents; Y. Dubrova.- Evolution Processes in Populations of Plaintain Growing around Radiation Sources; Changes in Plant Genotypes Resulting from Bystander Effects and chromosomal Instability; V. Korogodina, and B.V. Florko.- Clastogenic Factors, Bystander Effects and Genomic Instability in Vivo; S. Melnov, et al.- Section 4: Multiple Stressors: Mechanisms. Multidisciplinary Aspects of Regulatory Systems relevant to Multiple Stressors: Aging, Xenobiotics and Radiation; C.D. Rollo.- Genetic Aspects of pollutant Accumulation in Plants; A. Kilchevsky et al.- Radiation Risks in the Context of multiple Stressors in the Environment - Issues for Consideration; C. Mothersill and C. Seymour.- Protection by Chemicals against Radiation-Induced Bystander Effects; P. Marozik, I. Mosse, C. Mothersill and C. Seymour.- Considerations for proteomic Biomarkers in Rainbow trout Ecotoxicology; R. Smith et al.- Genetic Effects of combined Action of some Chemicalsand ionizing Radiation in Animals and human Cells; I. Mosse et al.- Cytogenetic Biomarkers for Exposure to multiple Stressors; M. Durante.- Redox Proteomics - a Route to the Identification of damaged Proteins; D. Sheehan et al.- Exposure Assessment to Radionuclides Transfer in Food Chain; M. de Lurdes.- Radiation, oxidative Stress and Senescence; the vascular Endothelial Cell as a common Target; P. Schofield and J. Garcis-Bernardo.- Sensitivity of Irradiated Animals to Infection; V.S. Nesterenko et al.- Section 5: Multiple Stressors: Applied Aspects Features of somatic Gene Mutagenesis in Different Age Groups of Persons exposed to Low Dose Radiation; A. Saenko and L.A. Zamulaeva.- State of Ecosystems at Long-term Contamination with Transuranium Radionucides; V. Kudrjashov and E.F. Konoplya.- Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) in Non- nuclear Industry and their Impact into Environment and Occupational Radiation Risk; B. Michalik.- Steppe Soils Buffer Capacity and the Multipollution Impact of Industrial Enterprises in Ukraine; M. Kharytonov et al.- Cancer Risk Assessment in Drinking Water of Izmir, Turkey; S. Aslan and A. Demirkol Turkman.- Enchanced Adsorption of Atrazine in Different Soils in the Presence of Fungal Laccase; N.A. Kulikova et al.- Problem of Microelementoze and Technology allowing its Elimination with the Help of Geothermal mineralized Sources; K.T. Norculova.- Ecology related Microbiological and Biochemical Parameters in Assessing Soils exposed to Antropogenic Pollution; F. Zdenek and K. Demnerova.- Molecular & Cellular Effects of chronic Low Dose-Rate ionizing Radiation Exposure in Mice; A.N. Osipov.- Section 6: Multiple Stressors - Risk Assessment and Legal I Ethical Aspects Modeling the best Use of Investments for Minimizing Risks of Multiple Stressors on the Environment; G. Kharlamova.- Learning from Chernobyl: Past and Present Responses; O. Udovyk.- Uncertainties from Multiple Stressors: Challe