Preface V

List of Participants VII

Contributions

Chrysophyte History

Kristiansen, J.: Two centenaries in chrysophyte research:
Gunnar Nygaard and Berit Asmund 1

Taxonomy and Biogeography

Barreto, S.: The silica-scaled chrysophyte flora of Hungary 11

Cronberg, G. & R. Laugaste: New species of Uroglena and Ochromonas
(Chromulinales, Chrysophyceae) from Estonia 43

Kristiansen, J. & J. F. Lind: Endemicity in silica-scaled chrysophytes 65

Menezes, M., J. Kristiansen & C. E. M. Bicudo: Silica-scaled chrysophytes
from some tropical freshwater bodies, southeastern Brazil 85

Rezacova, M. & P. Skaloud: Silica-scaled chrysophytes of Ireland.
With an appendix: Geographic variation of scale shape of Mallomonas
caudata 101

Siver, P. A., L. N. Voloshko, O. V. Gavrilova & M. V. Getsen:
The scaled chrysophyte flora of the Bolshezemelskaya tundra (Russia) 125

Vigna, M. S., S. R. Duque & M. Nunez-Avellaneda: Tropical silica-scaled
chrysophyte flora (Chrysophyceae and Synurophyceae) from Colombia 151

Ecology

Boenigk, J.: Some remarks on strain specificity and general patterns
in the ecology of Spumella (Chrysophyceae) 167

Forsström, L., S. Sorvari & A. Korhola: The role of the environmental factors
in controlling chrysophyte species distribution and biomass structure in
Finnish Lapland subarctic lakes 179

Ikävalko, J. & E. Marttinen: Community structure and summer-time
succession of chrysophyts in a small, shallow lake in the Tammisaari
Archipelago Nature Reserve, SW Finland in 2003 189

Kangro, K. & K. Olli: The effect of nutrient limitation on Dinobryon
balticum (Chysophyceae): a mesocosm study 197

Lott, A. M. & P. A. Siver: An inventory of scaled chrysophytes from
North Carolina, USA, and their relationships to environmental variables 211

Watson, S.B. & E. McCauley: Ammonia and nitrate: growth or inhibition?
Large-scale patterns in chrysophytes and the potential role of inorganic
nitrogen 231

Ecophysiology

Gavrilova, O.V., N. V. Nogina & L. N. Voloshko: Scale structures and
growth characteristics of Synura petersenii (Synurophyceae) under
different pH conditions 249

Wee, J. L., A. M. James & C. S. Hood: Exploratory investigations of
palmella-stage formation in the Synurophyceae 257

Paleolimnology

Coradeghini, A. & M. S.Vigna: Chrysophycean paleocyst flora as indicator
of climate changes from a postglacial deposit of a Patagonian peat (Neuquen,
Argentina) 267

Kamenik, C. & R. Schmidt: Computer-aided SEM analysis of chrysophyte
stomatocysts 269

Kamenik. C., A. Agusti-Panareda, P. G. Appleby, J. A. Dearing,
E. M. Shilland, F. Sporka, E. Stefkova & R. Thompson: Paleolimnological
evidence for atmospheric pollution, climate and catchment-related changes in
alpine chrysophyte stomatocyst assemblages (Tatra, Slovakia) 275

Siver, P. A. & P. A.Wolfe: Scaled chrysophytes in Middle Eocene lake
sediments from Northwestern Canada, including descriptions of six new
species 295

Vilaclara, G., B. A. Zeeb & E. Cuna: Chrysophyte cyst morphotypes from
two tropical, high-mountain lakes in Nevado de Toluca Volcano, Central Mexico . . 309
Conclusions and perspectives 337