1. Introduction

   OriginalPaper Pages: 1 - 2

2. Dynamics of planktonic food webs in three mining lakes across a pH gradient (pH 2–4)

   • Kathrin Wollmann
   • Rainer Deneke
   • Gabriele Packroff

   OriginalPaper Pages: 3 - 14

3. Ecogeochemistry of the subsurface food web at pH 0–2.5 in Iron Mountain, California, U.S.A.

   • Eleanora I. Robbins
   • Teresa M. Rodgers
   • D. Kirk Nordstrom

   OriginalPaper Pages: 15 - 23

4. Iron accumulation on the cell wall of the aquatic moss Drepanocladus fluitans in an acid lake at pH 3.4–3.8

   • Kenichi Satake

   OriginalPaper Pages: 25 - 30

5. Ecophysiology of algae living in highly acidic environments

   • Wolfgang Gross

   OriginalPaper Pages: 31 - 37

6. Effects of acidity on the growth of two Euglena species

   • M. M. Olaveson
   • C. Nalewajko

   OriginalPaper Pages: 39 - 56

7. Mechanism of aluminium tolerance in Cyanidium caldarium

   • Etsuro Yoshimura
   • Seiji Nagasaka
   • Satoshi Mori

   OriginalPaper Pages: 57 - 60

8. Bacteria and Archaea in acidic environments and a key to morphological identification

   • Eleanora I. Robbins

   OriginalPaper Pages: 61 - 89

9. Acidophilic and acid-tolerant fungi and yeasts

   • Sabine Gross
   • Eleanora I. Robbins

   OriginalPaper Pages: 91 - 109

10. A review of diatoms found in highly acidic environments

    • Dean M. DeNicola

    OriginalPaper Pages: 111 - 122

11. Phytoplankton of the extremely acidic mining lakes of Lusatia (Germany) with pH ≤3

    • Dieter Lessmann
    • Andrew Fyson
    • Brigitte Nixdorf

    OriginalPaper Pages: 123 - 128

12. Angiosperms in acidic waters at pH 3 and below

    • Andrew Fyson

    OriginalPaper Pages: 129 - 135

13. The taxonomic position of Cyanidium, Cyanidioschyzon and Galdieria: an update

    • P. Albertano
    • C. Ciniglia
    • A. Pollio

    OriginalPaper Pages: 137 - 143

14. Molecular variation in Galdieria sulphuraria (Galdieri) Merola and its bearing on taxonomy

    • Salvatore Cozzolino
    • Paolo Caputo
    • Gabriele Pinto

    OriginalPaper Pages: 145 - 151

15. A review on the occurrence and taxonomy of heterotrophic protists in extreme acidic environments of pH values ≤ 3

    • Gabriele Packroff
    • Stefan Woelfl

    OriginalPaper Pages: 153 - 156

16. Protozooplankton in acidic mining lakes with special respect to ciliates

    • Gabriele Packroff

    OriginalPaper Pages: 157 - 166

17. Review of rotifers and crustaceans in highly acidic environments of pH values ≤3

    • Rainer Deneke

    OriginalPaper Pages: 167 - 172

18. Sampling, preservation and quantification of biological samples from highly acidic environments (pH ≤3)

    • Stefan Woelfl
    • Brian A. Whitton

    OriginalPaper Pages: 173 - 180

19. Corixidae (Hemiptera, Heteroptera) in acidic mining lakes with pH ≤3 in Lusatia, Germany

    • Kathrin Wollmann

    OriginalPaper Pages: 181 - 183

20. Authors index

    Authors Index Pages: 185 - 186