Sannio, Antonietta and Lugliè, Antonella Gesuina Laura and Sechi, Nicola (1996) The Phytoplankton of the internal Gulf of Olbia (North-East Sardinia) between July 1992 and July 1993. Plant Biosystems: giornale botanico italiano, Vol. 130 (4-6), p. 1037-1050. ISSN 0017-0070. eISSN 1724-5575. Article.
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The density variations and phytoplankton structure of the internal Gulf of Olbia (north-east Sardinia) from July 1992 to July 1993 are described.
The most important class was the Bacillariophyceae, because it accounted for the maximum values and because it dominated over about one-third of the study cycle. The picoplankton was present practically all the year round with the greatest development from September to March. Prymnesiophyceae, Dinophyceae, Cyanophyceae and Euglenophyceae were found more numerously in summer and autumn 1992 than in the rest of the year, while Bacillariophyceae, Chlorophyceae and Chrysophyceae were mostly found in spring and summer 1993.
Among the 16 species that expressed the highest mean yearly density values (greater than 1×104 cell I-1), 10 were Bacillariophyceae, 2 Dinophyceae, 3 Chrysophyceae and 1 Chlorophycea. The Bacillariophyceae have also been the dominant class in floristic terms (49 taxa on 95 total), followed by the Dinophyceae (26), the Chlorophyceae (5), the Chrysophyceae (5), the Prymnesiophyceae (4), the Prasinophyceae (2), the Euglenophyceae (2) and the Cyanophyceae (2).
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