1. Preface of the editor

   • Wilhelm Foissner

   EditorialNotes Pages: 89 - 89

2. In memoriam Wilhelm Kühnelt 1905–1988

   • F. Schaller

   Announcement Pages: 91 - 92

3. Voucher specimens: A way to protect the value of your research

   • N. A. Martin

   BriefCommunication Pages: 93 - 94

4. Evolutionary studies on the Assulina-Valkanovia complex (Rhizopoda, Testaceafilosia) in Sphagnum and soil

   • W. Schönborn
   • T. Peschke

   OriginalPaper Pages: 95 - 100

5. Biology and ultrastructure of the mycophagus, soil testate amoeba, Phryganella acropodia (Rhizopoda, Protozoa)

   • C. G. Ogden
   • P. Pitta

   OriginalPaper Pages: 101 - 109

6. Kuehneltiella terricola gen. nov., sp. nov. — a carnivorous ciliate (Protozoa, Ciliophora) from a sandy soil in Australia

   • W. Foissner

   OriginalPaper Pages: 110 - 118

7. Karyotype differentiation and chromosomal variability in springtails (Collembola, Insecta)

   • W. Hemmer

   OriginalPaper Pages: 119 - 125

8. Symbiosis with bacteria enhances the use of chitin by the springtail, Folsomia candida (Collembola)

   • H. Borkott
   • H. Insam

   OriginalPaper Pages: 126 - 129

9. Community structure and vertical distribution of Collembola and Cryptostigmata in a dry-turf cushion plant

   • C. Kampichler

   OriginalPaper Pages: 130 - 134

10. Vertical distribution of soil mites (Acari) in conventional and no-tillage agricultural systems

    • J. C. Perdue
    • D. A. Crossley Jr.

    OriginalPaper Pages: 135 - 138

11. Niche relationships between two panphytophagous soil mites, Nothrus silvestris Nicolet (Acari, Oribatida, Nothridae) and Platynothrus peltifer (Koch) (Acari, Oribatida, Camisiidae)

    • H. Siepel

    OriginalPaper Pages: 139 - 144

12. Dynamic interactions between functional groups of soil arthropods and microorganisms during decomposition of coniferous litter in microcosm experiments

    • A. Teuben
    • T. A. P. J. Roelofsma

    OriginalPaper Pages: 145 - 151

13. Involvement of Enchytraeidae (Oligochaeta) in soil structure evolution in agricultural fields

    • W. A. M. Didden

    OriginalPaper Pages: 152 - 158

14. Influence of Cognettia sphagnetorum (Oligochaeta: Enchytraeidae) on nitrogen mineralization in homogenized mor humus

    • G. Abrahamsen

    OriginalPaper Pages: 159 - 162

15. Mechanisms of stabilization of earthworm casts and artificial casts

    • J. C. Y. Marinissen
    • A. R. Dexter

    OriginalPaper Pages: 163 - 167

16. Influence of cropping system and nitrogen input on soil fauna and microorganisms in a Swedish arable soil

    • B. Sohlenius

    OriginalPaper Pages: 168 - 173

17. Effect of soil acidity on the entomophilic nematode Steinernema kraussei Steiner

    • P. Fischer
    • E. Führer

    OriginalPaper Pages: 174 - 177

18. Reactions to soil acidification in microarthropods: Is competition a key factor?

    • S. Hågvar

    OriginalPaper Pages: 178 - 181

19. Carabid beetles (Coleoptera, Carabidae) as bioindicators in biological and conventional farming in Austrian potato fields

    • B. Kromp

    OriginalPaper Pages: 182 - 187

20. Analysis of leaf and needle litter decomposition by differential scanning calorimetry and differential thermogravimetry

    • U. Reh
    • W. Kratz
    • C. Angehrn-Bettinazzi

    OriginalPaper Pages: 188 - 191

21. Element content of bark-beetles (Ips typographus Linne, Trypodendron lineatum Olivier; Scolytidea): A contribution to biological monitoring

    • M. Roth-Holzapfel
    • W. Funke

    OriginalPaper Pages: 192 - 198

22. Characterization of free and adsorbed phosphatases in soils

    • E. Kandeler

    OriginalPaper Pages: 199 - 202

23. Colour-marking in experiments on food selection with Collembola

    • A. Thiele
    • O. Larink

    Short Communication Pages: 203 - 204