Irina Sterlyagova

Komi Scientific Center · Komi Scientific Center, Institute of Biology

In this study, the cryptomonads of the northern territories of Russia were explored. Four strains were isolated from the different acidic habitats in the Middle Urals and the North of the European part of Russia. Cells of these strains are flattened in the dorsoventral plane, have an asymmetrical outline and are similar in size and shape to Cryptom...

The first data on algae from some aquatic and terrestrial ecosystems of the southern taiga on the territory of the Koigorodsky National Park (Komi Republic, Russia) showed a fairly diverse composition of these organisms: in the aquatic ecosystems of the park, 194 taxa were identified with intraspecific varieties and forms from six divisions with a...

Background: The paper is based on the dataset whose purpose was to deliver, in the form of GBIF-mediated data, diverse materials on the biodiversity of a large mire, Shichengskoe mire (Vologda Region, north-western Russia), including its various mire sites and intra-mire water bodies. The dataset was based on our materials collected for two decade...

The purpose of the data paper was to introduce into scientific literature the results of scientific work carried out for the third edition of the 'Red Data Book of the Komi Republic'. The article reflects methodological approaches to the formation of a list of rare and in need of protection species and describes the corresponding datasets published...

Stomatocysts of Chrysastrella paradoxa was observed in a herb-mosses mire on the territory of “Yugyd va” National Park (the Subpolar Urals, Russia). The morphology of stomatocysts was studied by scanning electron microscopy. This is the second record of Ch. paradoxa in Russia.

Abstract—The results are presented for a study of summer phytoplankton (July 2018–2020) in the middle reaches of the Vychegda River at the sites where treated wastewater is discharged from the Mondi Syktyvkar JSC pulp and paper mill. In the phytoplankton of the studied section of the river, 263 species with algal varieties from seven divisions were...

We studied how ecological factors affect species composition and structure of soil algal assemblages in different types of mountain tundra and sparse forests in the Northern Urals. Soil moisture, pH, nitrogen content and amount of solar radiation were determined using Ellenberg indicator values from phytoindicators. Species identification of soil a...

The composition of diatom assemblages of epilithon, epiphython and epipelon in the Shchugor River was presented. Biofoulings of rocky substrates, macrophytes, filamentous algae and samples from the surface of bottom sediments were studied. The diatom assemblages had a diverse composition and included 218 species with varieties and forms from 60 gen...

In epiphyton of the Shchugor River 143 species (with varieties and forms) of diatoms from 49 genera, 21 families were identified. Families Fragilariaceae Achnanthidiaceae, Gomphonemataceae, Naviculaceae, Bacillariaceae, Eunotiaceae include 10 and more taxa. Genera Gomphonema (11), Eunotia, Nitzschia (10 species) are predominate. Diatoms on mosses a...

For many years Chrysastrella Chodat has been a cyst genus but recently it has been reinstated and redefined. Currently, Chrysastrella contains Ochromonas-like flagellates including O. tuberculata Hibberd which was synonymized with the type species, Chrysastrella paradoxa Chodat. A mass development of stomatocysts, which we identified as Ch. paradox...

In epiphyton of the Shchugor River 143 species (with varieties and forms) of diatoms from 49 genera, 21 families were identified. Families Fragilariaceae Achnanthidiaceae, Gomphonemataceae, Naviculaceae, Bacillariaceae, Eunotiaceae include 10 and more taxa. Genera Gomphonema (11), Eunotia, Nitzschia (10 species) are predominate. Diatoms on mosses a...

Based on scanning electron microscopy, frustule morphology of the diatoms Kobayasiella subtillissima, K. parasubtillissima and K. okadae from dystrophic weakly mineralized water bodies in northeastern European Russia (the Komi Republic and the Vologda Region) was studied. The ranges of variation in valve length and width and stria density for K. su...

The aim of our research was to study the distribution, define the ecological-phytocoenotic preferences and assess the state of rare plant populations in the southern part of the Yugyd Va National Park (Komi Republic). There is a lack of data on the vegetation and plant species diversity of this region. No population studies dealing with rare and pr...

In 2014, for the first time in the last 55 years, phytoplankton of the water bodies of the Vychegda River Basin has been studied. The basis of plankton communities is made up of algae from Bacillariophyta, Chlorophyta, and Cyanoprokaryota divisions. In terms of quantitative indicators, leading groups with the prevalence of diatoms are identified. T...

Specific hydrological characteristics of small reservoirs and insufficiency of data on them determine the need for their integrate investigation to reveal the patterns of their ecosystems formation that could help to estimate their state in the future monitoring. The article presents the data on water chemistry and the main biological components (p...

Species diversity of algal communities of sphagnum epiphyton was studied in six mountain and plain mires of the Subpolar Urals (Russia). A total of 154 species and intraspecific taxa from six divisions were identified. The highest species richness was recorded for Bacillariophyta (96 taxa) and Charophyta (33) divisions. Species Kobayasiella parasub...

Patova E., Sterlyagova I., Shabalina Y., 2014: Rare macroscopic algae species in the Pechora and Vychegda River basins (northeastern part of European Russia) [Retos makroskopinių dumblių rūšys Pečoros ir Vyčegdos upių baseinuose (Rusijos europinės dalies šiaurės rytai]. – Bot. Lith., 20(2): 77–86. Ten rare species of macroscopic algae were found in...

The species composition of desmids was studied in eight mountain lakes of the Kozhim and Malyi Patok River basins in the “Yugyd Va” National Park (subpolar Urals, Russia). A total of 98 desmid taxa representing 13 genera belonging to 4 families were identified. Geographical and ecological analyses showed that the desmid flora is typical, with a pre...