1. Nikolai Vladimirovich Timofeeff-Ressovsky (In commemoration of his 100th anniversary)

   • V. N. Bol'shakov

   Announcement Pages: 219 - 219

2. Nikolai Vladimirovich Timofeeff-Ressovsky: A biologist's outlook

   • N. V. Glotov

   OriginalPaper Pages: 220 - 223

3. Radioecological investigation of the Techa-Iset' river system

   • A. V. Trapeznikov
   • V. N. Pozolotina
   • Q. Chen

   OriginalPaper Pages: 224 - 232

4. Problems of sustainable development and ecological indication in radioactively contaminated areas

   • D. A. Krivolutskii

   OriginalPaper Pages: 233 - 237

5. Biogeochemical characteristics of natural and technogenic ecosystems of the southern Baikal region

   • G. A. Belogolova
   • G. V. Matyashenko
   • R. Kh. Zaripov

   OriginalPaper Pages: 238 - 244

6. Free radicals and chromosome aberrations in leaves of woody plants as a test system for the genotoxicity of the urban environment

   • E. P. Gus'kov
   • T. V. Varduni
   • A. V. Mirzoyan

   OriginalPaper Pages: 245 - 250

7. Experience in using ecological phytoindication scales for revealing unfavorable factors at the boundary of species distribution

   • L. V. Teteryuk

   OriginalPaper Pages: 251 - 255

8. Gradient analysis of the chrogenetic structure of lowland and highland scotch pine populations

   • I. V. Petrova
   • S. N. Sannikov
   • T. V. Filippova

   OriginalPaper Pages: 256 - 261

9. Comparative analysis of the population structure of social vole (Microtus socialis Pall., 1773, cricetidae, rodentia) in different areas of its range

   • S. A. Shilova
   • M. V. Kasatkin

   OriginalPaper Pages: 262 - 268

10. Influence of the zebra mussel and fish fry on structural and functional characteristics of microorganisms in experimental ecosystems

    • N. A. Lapteva
    • I. O. Solntseva

    OriginalPaper Pages: 269 - 273

11. Bioindication-based comparison of anthropogenic pollution near a radioactive-waste processing facility and in the 30-km control area of the Chernobyl Nuclear Power Plant

    • S. A. Geras’kin
    • L. M. Zimina
    • E. B. Nesterov

    Short Communications Pages: 274 - 277

12. Responses of juvenile black sea mullet to pollution with fuel oil

    • I. I. Rudneva
    • T. L. Chesalina
    • N. S. Kuz'minova

    Short Communications Pages: 278 - 280

13. Parasitological consequences of animal introduction

    • V. M. Ivanov
    • N. N. Semenova

    Short Communications Pages: 281 - 283

14. Book review

    • L. M. Abramova
    • B. M. Mirkin

    Critics and Bibliography Pages: 284 - 285

15. Book review

    • V. S. Bezel’

    Critics and Bibliography Pages: 286 - 287

16. International Symposium on Grassland Ecosystems of the Mongolian Plateau (Xilinhot, August 10–16, 1999)

    • A. A. Lushchekina
    • V. V. Neronov

    Information Pages: 288 - 290

17. The 80th Anniversary of Academician P.L. Gorchakovskii

    Awards Pages: 291 - 292