Azam F., Fenchel T., Field J. G., Gray J. S., Meyer-Reil L. A., Thing- stad F. (1983) The ecological role of water-column microbes in the sea. Mar. Ecol. Prog. Ser. 10: 257–263 Pomeroy L. (1974) The ocean’s food web: A changing paradigm. BioScience 24: 499–504 Reid P. C., Turley C. M., Burkill P. H. (1991) Protozoa and Their Role in Marine Processes. NATO ASI Series, Springer–Verlag, Berlin Sherr E. B., Sherr B. F. (2002) Significance of predation by protists in aquatic microbial food webs. Antonie van Leeuwenhoek 81: 293–308 Skora J., Kuźnicki L. (2006) Acta Protozoologica 1963–2006. Acta Protozool. 45: 319–321