References
- Dittrich, M., Dittrich, T., Sieber, I. & Koschel, R., 1997: A balance analysis of phosphorus elimination by artificial calcite precipitation in a stratified hardwater lake. — Water Res. 164: 237–248.
- Hepperle, D. & Krienitz, L., 1997: Phacotus lenticularis (Chlamydomonadales, Phacotaceae) zoospores require external supersaturation of calcium carbonate for calcification in culture. — J. Phycol. 33: 415–424.
- Kies, L., 1967: Über Zellteilung und Zygotenbildung bei Roya obtusa (Bre.) West & West. — Mitt. Staats. Allg. Bot. Hamburg 12: 35–42.
- Koschel, R., Benndorf, J., Proft, G. & Recknagel, F., 1983: Calcite precipitation as a natural control mechanism of eutrophication. — Arch. Hydrobiol. 32: 380–408.
- Koschel, R., Gierinc, B., Kasprzak, G., Proft, G. & Raidt, H., 1990: Changes of calcite precipitation and trophic conditions in two stratified hardwater lakes of the Baltic Lake District. — Verh. Internat. Verein. Limnol. 24: 140–145.
- Krienitz, L., Koschel, R., Giering, B., Casper, S. J., Hepperle, D., 1993: Phenomenology of organismic calcite precipitation by Phacotus in hardwater lakes and ponds of northeastern Germany. — Verh. Internat. Verein. Limnol. 25: 170–174.
- Reynolds, C. S., 1988: Functional morphology and the adaptive strategies of freshwater phytoplankton. — In: Sandgren, C. D. (ed.): Growth and Reproductive Strategies of Freshwater Phytoplankton. 388–433. — Cambridge University Press.
- Reynolds, C. S., 1997: Vegetation processes in the pelagic: a model for ecosystem theory. — In: Kinne, O. (ed.): Excellence in Ecology, Vol. 9. — Inter-Research Science Publishers, Oldendorf/Luhe. 371 pp.
- Schlegel, I., Koschel, R. & Krienitz, L., 1998: On the occurrence of Phacotus lenticularis (Chlorophyta) in lakes of different trophic states. — Hydrobiologia 369/370: 353–361.
- SchlÖSser, U. G., 1994: SAG-Sammlung von Algenkulturen at the University of Göttingen Catalogue of Strains. — Bot. Acta 107: 113–186.
- Utermöhl, H., 1958: Zur Vervollkommnung der quantitativen Phytoplanktonmethodik. — Verh. Internat. Verein. Limnol. 9: 1–38.