1. Preface from the Editorial Board

   EditorialNotes 29 December 2011 Pages: 241 - 241

2. Stellate tadpole-goby Benthophilus stellatus (Sauvage, 1874) in the Cheboksary Reservoir

   • A. N. Kasyanov
   • A. A. Klevakin

   OriginalPaper 29 December 2011 Pages: 242 - 244

3. Role of invasions in formation of house mice population of Ishim and their taxonomic evaluation

   • A. N. Maltsev

   OriginalPaper 29 December 2011 Pages: 245 - 249

4. Alien species of the flora in the Sura River basin

   • T. B. Silaeva

   OriginalPaper 29 December 2011 Pages: 250 - 255

5. Coexistence of nonnative and Black Sea species in phytoplankton of north-eastern part of the Black Sea: Discussion of invasion hypotheses

   • V. A. Silkin
   • A. I. Abakumov
   • T. A. Lukasheva

   OriginalPaper 29 December 2011 Pages: 256 - 264

6. Alien flora of protected territories (by the example of the Voronezh Biosphere Reserve)

   • E. A. Starodubtseva

   OriginalPaper 29 December 2011 Pages: 265 - 267

7. Variability of morphometric characteristics of Galega orientalis Lam. In some populations of natural and secondary ranges

   • E. V. Tkacheva
   • Yu. K. Vinogradova
   • I. V. Pavlova

   OriginalPaper 29 December 2011 Pages: 268 - 272

8. Microevolution and invasiveness of Oenothera L. species (subsect. Oenothera, Onagraceae) in Europe

   • V. K. Tokhtar
   • Yu. K. Vinogradova
   • A. S. Groshenko

   OriginalPaper 29 December 2011 Pages: 273 - 280

9. Invasive potential of adventive plant species of the Middle Urals

   • A. S. Tretyakova

   OriginalPaper 29 December 2011 Pages: 281 - 285

10. Invasive species Potamopyrgus antipodarum (Gray, 1843) (Mollusca: Gastropoda: Hydrobiidae) in the waterbodies of Kaliningrad region (Russia)

    • D. P. Filippenko

    OriginalPaper 29 December 2011 Pages: 286 - 292

11. Diversity of alien mammal species in different regions of Russia

    • L. A. Khlyap
    • A. A. Warshavsky
    • V. V. Bobrov

    OriginalPaper 29 December 2011 Pages: 293 - 299

12. On possibilities of determination of degree of invasion threat delay of alien plant species

    • L. V. Khoroon

    OriginalPaper 29 December 2011 Pages: 300 - 311

13. Impact of Dreissena polymorpha and Dreissena bugensis on structure of zoobenthos in the upper reaches of the Kuybyshev Reservoir (Russia)

    • A. V. Yakovleva
    • V. A. Yakovlev

    OriginalPaper 29 December 2011 Pages: 312 - 319