Rai, H.; Jacobsen, T. R.: Dissolved alkaline phosphatase activity (APA) and the contribution APA by size fractionated plankton in Lake Schöhsee. Verhandlungen der Internationalen Vereinigung für Theoretische und Angewandte Limnologie 25 (1), S. 164 - 169 (1993)

Santer, B.: Do cyclopoid copepods control Daphnia populations in early spring, thereby protecting their juvenile instar stages from food limitation? Verhandlungen der Internationalen Vereinigung für Theoretische und Angewandte Limnologie 25 (1), S. 634 - 637 (1993)

Fussmann, G.: Abundance, succession and morphological variation of planktonic rotifers during autumnal circulation in a hypertrophic lake (Heiligensee, Berlin). Rotifer Symposium VI. Proceedings of the Sixth International Rotifer Symposium, Banyoles, Spain, 03. Juni 1991 - 08. Juni 1991. Rotifer Symposium 6, S. 353 - 360 (1993)

Dawidowicz, P.: Diel vertical migration in Chaoborus flavicans: Population patterns vs. individual tracks. Diel vertical migration of zooplankton, Lelystad, The Netherlands, 03. November 1991 - 08. November 1991. Diel vertical migration of zooplankton. Proceedings of an International Symposium, S. 19 - 28 (1993)

Duncan, A.; Guisande, C.; Lampert, W.: Further trade-offs in Daphnia vertical migration strategies. Diel vertical migration of zooplankton, Lelystad, The Netherlands, 03. November 1991 - 08. November 1991. Diel vertical migration of zooplankton, S. 99 - 108 (1993)

Gabriel, W.: Models on diel vertical migration. Diel vertical migration of zooplankton, Lelystad, The Netherlands, 03. November 1991 - 08. November 1991. Ergebnisse der Limnologie/Advances in Limnology Beiheft 39, S. 123 - 136 (1993)

Lampert, W.: Ultimate causes of diel vertical migration of zooplankton: New evidence for the predator-avoidance hypothesis. Diel vertical migration of zooplankton, Lelystad, The Netherlands, 03. November 1991 - 08. November 1991. Diel vertical migration of zooplankton. Proceedings of an International Symposium held at Lelystad, The Netherlands, S. 79 - 88 (1993)

Loose, C. J.: Daphnia diel vertical migration behavior: Response to vertebrate predator abundance. Diel vertical migration of zooplankton, Lelystad, The Netherlands, 03. November 1991 - 08. November 1991. Diel vertical migration of zooplankton. Proceedings of an International Symposium, S. 29 - 36 (1993)

Pijanowska, J.: Diel vertical migration in zooplankton: fixed or inducible behavior? Diel vertical migration of zooplankton, Lelystad, The Netherlands, 03. November 1991 - 08. November 1991. Diel vertical migration of zooplankton. Proceedings of an International Symposium, S. 89 - 97 (1993)

Höfle, M. G.: Community structure and dynamics of bacterioplankton as revealed by low-molecular-weight RNA analysis. In: Trends in Microbial Ecology: proceedings of the sixth International Symposium on Microbial Ecology, S. 391 - 395 (Hg. Guerrero, R.; Pedrós-Alió, C.). International Symposium on Microbial Ecology, Barcelona, 06. September 1992 - 11. September 1992. Spanish Society for Microbiology, Barcelona (1993)

Hofmann, W.: Late-Glacial/Holocene changes of the climatic and trophic conditions in three Eifel maar lakes, as indicated by faunal remains. 2. Chironomidae (Diptera). In: Paleolimnology of European Maar Lakes, S. 421 - 433 (Hg. Negendank, J. F. W.; Zolitschka, B.). Paleolimnology of European Maar Lakes, Bitburg, Germany, 21. Mai 1991 - 25. Mai 1991. Springer, Berlin (1993)

Hofmann, W.: Late-Glacial/Holocene changes of the climatic and trophic conditions in three Eifel maar lakes, as indicated by faunal remains. 1. Cladocera. In: Paleolimnology of European Maar Lakes, S. 393 - 420 (Hg. Negendank, J. F. W.; Zolitschka, B.). Paleolimnology of European Maar Lakes, Bitburg, Germany, 21. Mai 1991 - 25. Mai 1991. Springer, Berlin (1993)

Rai, H.: Patterns of photoassimilation of 14C-labeled bicarbonate into end-products of photosynthesis by Nitzschia palea as a function of photon flux density (PFD). In: Proceedings of International Symposium on Environmental Microbiology, S. 127 - 142. Proceedings of International Symposium on Environmental Microbiology, Seoul, Korea, 08. Oktober 1993 - 10. Oktober 1993. Seoul National University, Seoul (1993)

Wagner, R.: Spatial and temporal patterns in caddisfly (Trichoptera) distribution along the Breitenbach (Germany) 1983-1991. In: Proceedings of the 7th International Symposium on Trichoptera, S. 229 - 232. 7th International Symposium on Trichoptera, Umeå, Sweden, 03. August 1992 - 08. August 1992. Backhuys Publishers, Leiden, The Netherlands (1993)

Wichard, W.; Schmidt, H.-H.; Wagner, R.: The semipermeability of the pupal cocoon of Rhyacophila (Trichoptera: Spicipalpia). In: Proceedings of the 7th International Symposium on Trichoptera, S. 25 - 27 (Hg. Otto, C.). 7th International Symposium on Trichoptera, Umeå, Sweden, 03. August 1992 - 08. August 1992. Backhuys Publisher, Leiden, The Netherlands (1993)

Müller-Navarra, D.: Quantifizierung von Nahrungsqualität für herbivores Zooplankton. Dissertation, Christian-Albrechts-Universität, Kiel (1993)

Jungmann, D.: Toxische Sekundärmetabolite aus Microcystis flos-aquae Stamm PCC7806: Freiland- und Laboruntersuchungen zur biochemischen Charakterisierung. Dissertation, VII, 102 S., Christian-Albrechts-Universität, Kiel (1993)

Bögershausen, A.: Untersuchungen zur Eignung fluorigener Modellsubstrate zur Bestimmung mikrobieller Aktivitäten. Wie spezifisch sind Methylumbelliferylverbindungen? Diplom, Technische Universität, Braunschweig (1993)