Dubovik I. E. , Sharipova M. Y.

Taxonomic composition of cyanobacterial and algae cenosis of the Usolka river therapeutic muds at the «Krasnousolsky» resort

Abstract:

During the study period from 2015 to 2016 229 species and intraspecific taxa of algae and cyanobacteria were found in the benthic algal flora of the Usolka River (the basin of the Belaya River, the Gafuriy District of the Republic of Bashkortostan). In the samples from different mineral springs most often encounted were Synechocystis aquatilis, Oscillatoria limnetica, O. formosa, Phormidium molle, Ph. foveolarum, Spirulina jenneri, Anabaena variabilis, Aphanizomenon flos-aquae, Euglena viridis, Cyclotella comta, Diatoma vulgare, Synedra acus, S. ulna, Cymbella pusilla, Achnanthes minutissima, Gyrosigma spenceri, G. acuminatum, Gomphonema olivaceum, Navicula viridula, Nitzschia acicularis , N. recta, N. paleo, Botrydiopsis arhiza, Chlorella vulgaris, Pandorina morum, Scenedesmus acuminatus, Pediastrum boryanum. According to the medium reaction (pH), alkaliphiles predominate, including 54 intraspecies taxa, which is 23.5% of the detected algae. Geographically, the flora of the therapeutic mud from the river Usolka is defined by cosmopolitans, which include 135 species and intraspecies taxa of algae and cyanobacteria, which constitutes 59%. In the relation to the main habitat, plankton-benthic species prevail. In terms of halobility, most diverse were freshwater species dominated by oligogalobs-indifferents. According to the algae and cyanobacteria distribution in saprobity zones, oligosaprobes, betamesosaprobes and oligobetamisosaprobes were predominat in the therapeutic muds of the river Usolka . The ratio of algal species and cyanobacteria of different divisions remained constant throughout the summer-autumn seasons, so was the ratio of saprobity species indicators with the dominance of oligosaprobes.

About the autors:

Irina Evgenievna Dubovik (1), Doctor of Biological Sciences, Professor of the Department of Physiology and General Biology; Marina Yurievna Sharipova (2), Doctor of Biological Sciences, Professor of the Department of Physiology and General Biology

Place of employment:

Bashkir State University (1,2)

Contacts:

e-mail: dubovikie@mail.ru (1); e-mail: sharipovamy@mail.ru (2)

Key words:

algae; cyanobacteria; macroscopic growths; therapeutic mud; the Usolka River