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International Journal on Algae
SJR: 0.219 SNIP: 0.261 CiteScore™: 0.24

ISSN Imprimir: 1521-9429
ISSN On-line: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v17.i3.10
pages 203-210

New Data on Morphology, Taxonomy, and Distribution of Diatom Eunotia biconstricta (Grunow) Lange-Bert. (Bacillariophyta)

S. I. Genkal
I.D. Papanin Institute for Biology of Inland Waters of RAS, Settle Borok, Nekouz District, Yaroslavl Region 152742, Russia
T.V. Chekryzheva
Institute of Water Problems of the North, Karelian Research Center, 50, Pr. Al. Nevskogo, Petrozavodsk, 185003 Republic of Karelia, Russia


The study of extensive materials from the rivers and lakes of Karelia and Western Siberia using scanning electron microscopy revealed significant morphological variability of quantitative (valve length and width, the number of striae and areolae in 10 µm) and qualitative (shape of valve and terminal raphe fissures) features. Based on the original and published data, it allowed extending the description of Eunotia biconstricta and referring some taxa as synonyms.