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

ISSN Imprimir: 1521-9429
ISSN En Línea: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v20.i4.10
pages 313-338

Diversity of Terrestrial Algae of Cape Kazantip (the Sea of Azov, Ukraine) and Some Remarks on their Phylogeny and Ecology

T. I. Mikhailyuk
N.G. Kholodny Institute of Botany, NAS of Ukraine, 2 Tereshchenhovskaya Str., Kiev 01004, Ukraine
O. N. Vinogradova
N.G. Kholodny Institute of Botany, NAS of Ukraine, 2 Tereshchenhovskaya Str., Kiev 01004, Ukraine
K. Glaser
University of Rostock, Institute of Biol. Sci., Department of Appl. Ecology and Phycology, 3, Albert-Einstein-Strasse, Rostock D-18057, Germany
E. Demchenko
N.G. Kholodny Institute of Botany, NAS of Ukraine, 2 Tereshchenhovskaya Str., Kiev 01004, Ukraine
U. Karsten
University of Rostock, Institute of Biol. Sci., Department of Appl. Ecology and Phycology, 3 Albert-Einstein-Strasse, Rostock D-18057, Germany

SINOPSIS

The article summarizes the results of a study on terrestrial algae of Cape Kazantip, conducted during the summer of 2012, on the territory of the Kazantip Nature Reserve and its environs. Samples of biological soil crusts from the coquina beach and clay scree, as well as lithophytic algal communities, were studied by direct light microscopy with subsequent culturing. For a number of strains of cyanobacteria and eukaryotic algae, phylogenetic analyses based on the nucleotide sequence of the 16S/18S rRNA gene, as well as the 16S-23S ITS region/ITS-1,2 were performed. The data clarified species identity and taxonomic position, and were to make a few interesting floristic records, supplementing the algal flora of Ukraine with new taxa of the genera Oculatella Zammit, Billi et Albertano, Timaviella Sciuto et Moro, Roholtiella Bohunicka, Pietrasiak et Johansen, Bracteacoccus Tereg, Interfllum Chodat. In total, 73 species were identified from the divisions of Cyanoprokaryota (35), Chlorophyta (23), Streptophyta (5), and Ochrophyta (10). Litophyton and soil crusts differed markedly in species diversity, taxonomic structure, and the dominant algal complex. Only 30.1% of the identified species were found in both types of habitats, while 41 species occurred in rock communities. Here, a high diversity of cyanobacteria, especially representatives of the order Nostocales and the group Gloeocapsa s. 1., as well as Trebouxiophyceae and Ulvopkyceae among green algae, were recorded. On limestone, in the chasmoendolitic communities, dominant species were G. punctata Nageli and Ctenocladus circinnatus Borzi, while on the rock surface Desmococcus olivaceus (Pers. ex Ach.) J.R. Laundon and Trentepohlia sp. dominated. In the hypolithic communities on quartz, filamentous cyanobacteria prevailed. In biological crusts on the coquina and clay, 54 species were identified. Cyanobacteria were leading both in the number of species (42.6% of the total diversity) and in quantitative development. Species of genera Microcoleus Desmazieres ex Gomont, Coleofasciculus Siegesmund, Johansen et Friedl, Hassallia Berkeley ex Bornet et Flahault, Nostoc Vaucher ex Bornet et Flahault, Scytonema Agardh ex Bornet et Flahault, and some others dominated in the crusts studied. Chlorophyta (33.3%), among which the proportion of representatives of the class Chlorophyceae increased markedly, were the second in species diversity, but their abundance was low. Only once Klebsormidium mucosum (J.B. Petersen) Lokhorst (Streptophyta) dominated in a crust on the clay scree. Crusts from the coquina had higher species richness of cyanobacteria and algae (45 species, an average of 13.5 species per sample) as compared with clay screes (24/9.6). Among species discovered in the present study, only 13.7% were previously cited for this territory.


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