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last update: 14 July 2016

Übel E. (1912) Neresheimeria nov. nom. für Lohmanella Neresh.. - Zoologischer Anzeiger 39: 461.

Uchida T. (1991) Sexual reproduction of Scrippsiella trochoidea isolated from Muroran Harbour Hokkaido. – Nippon Suisan Gakkaishi 57: 1215.
Uchida T. (2001) The role of cell contact in the life cycle of some dinoflagellate species. – Journal of Plankton Research 23: 889-891.
Uchida T., T. Kamiyama & Y. Matsuyama (1997) Predation by a photosynthetic dinoflagellate Gyrodinium instriatum on loricate ciliates. - Journal of Plankton Research 19(5): 603-608.
Uchida T., Y. Matsuyama, M. Yamaguchi & T. Honjo (1996) The life cycle of Gyrodinium instriatum (Dinophyceae) in culture. – Phycological Research 44(3): 119-123.

Ucko M., S.Geresh, B. Simon-Berkovitch & S. Arad Malis (1994) Predation by a dinoflagellate on a red microalga with a cell wall modified by sulfate and nitrate starvation. - Marine Ecology Progress Series 104: 293-298.

Udy J.W., R. Hinde & M. Vesk (1993) Chromosomes and DNA in Symbiodinium from Australian hosts. - Journal of Phycology 29(3): 314-320.

Uhlig G. & G. Sahling (1990) Long-term studies on Noctiluca scintillans in the German Bight. Population dynamics and red-tide phenomena 1968-1988. - Netherlands Journal of Sea Research 25 : 101-112.
Uhlig G. & G. Sahling (1995) Noctiluca scintillans: Zeitliche Verteilung bei Helgoland und räumliche Verbreitung in der Deutschen Bucht (Langzeitreihen 1970-1993). - Berichte der Biologischen Anstalt Helgoland 9: 1-127.
Uhlig G., G. Sahling & M. Hanslik (1995) Zur Populationsdynamik von Noctiluca scintillans in der südlichen Deutschen Bucht 1988-1992. - Berichte der Biologischen Anstalt Helgoland 10: 1-32.

Unni K.S. & S. Pawar (2000) The phytoplankton along a pollution gradient in the river Mahandi (M.P. state) India - a multivariate approach. - Hydrobiologia 430: 87-96.

Usachev P.I. (1935) The composition and distribution of phytoplankton in the Barents Sea, in the summer 1931. - Transactions of the Arctic Institute 21: 5-94. (in Russian)

Usup G. & Y.K. Lung (1991) Effects of meteorological factors on toxic red tide events in Sabah, Malaysia. - Marine Ecology 12(4): 331-339.
Usup G., L.C. Pin, A. Ahmat & L.P. Teen (2002) Phylogenetic relationship of Alexandrium tamiyavanichii (Dinophyceae) to other Alexandrium species based on ribosomal RNA gene sequences. – Harmful Algae 1(1): 59-68.
Usup G., L.C. Pin, A. Ahmat & L.P. Teen (2002) Alexandrium (Dinophyceae) species in Malaysian waters. - Harmful Algae 1(3): 265-275.
Usup G., S.Z. Hamid, P.K. Chiet, C.K. Wah &  A. Ahmat (2008) Marked differences in fatty acid profiles of some planktonic and benthic marine dinoflagellates from Malaysian waters. - Phycologia 47: 105-111.

Utermöhl H. (1923) Einige Bemerkungen über den Formenkreis von Gymnodinium mirabile Penard. -  Schriften für Süsswasser- und Meereskunde, Büsum 1: 3-6.
Utermöhl H. (1925) Limnologische Phytoplanktonstudien. Die Besiedlung ostholsteinischer Seen mit Schwebplankton. - Archiv für Hydrobiologie Supplement 5: 1-527+24 pls.

Uysal Z., M. Iwataki & T. Koray (2003) On the presence of Heterocapsa pygmea A.R.Loebl. (Peridiniales, Dinophyceae) in the nortern Levantine Basin (eastern Mediterranena). – Turk. J. Botany 27: 149-152.