A5102854204- Microbial Community Ecology and Physiology
- Aquatic and Environmental Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Methane Hydrates and Related Phenomena
- Protist diversity and phylogeny
- Marine and environmental studies
- Marine and coastal ecosystems
- Environmental DNA in Biodiversity Studies
- Geology and Paleoclimatology Research
- Water Resources and Management
- Spectroscopy and Quantum Chemical Studies
- Ecology and biodiversity studies
- Polar Research and Ecology
- Geological Studies and Exploration
- Genomics and Phylogenetic Studies
- Photosynthetic Processes and Mechanisms
- Fish Ecology and Management Studies
- Marine Biology and Ecology Research
- Aquatic Invertebrate Ecology and Behavior
- Environmental Science and Water Management
- Molecular Junctions and Nanostructures
- Diatoms and Algae Research
Samara Federal Research Scientific Center
2020-2024
Russian Academy of Sciences
2022-2024
Institute of Industrial Ecology
2017-2019
Rutgers, The State University of New Jersey
2010
Kuibyshev Reservoir, the largest in Volga basin, is poorly covered by modern molecular studies. The results of a metabarcoding study pro- and eukaryotic microbial plankton its lower section during summer period are presented. Bacterioplankton composition was typical for most temperate freshwater bodies characterized dominance cyanobacteria, Pseudomonadota, Bacteroidota, Actinomycetota, PVC superphylum (Verrucomicrobiota Planctomycetota), with somewhat increased proportion latter. protist...
By using a nondestructive, ultrasensitive, fluorescence kinetic technique, we measure in situ the photochemical energy conversion efficiency and electron transfer kinetics on acceptor side of histidine-tagged photosystem II core complexes tethered to gold surfaces. Atomic force microscopy images coupled with Rutherford backscattering spectroscopy measurements further allow us assess quality, number layers, surface density reaction center films. Based these measurements, calculate that...
Abstract The comparative analysis of indicators development various components plankton community in reservoirs the Kama cascade hydrological seasons, and on sites (in coastal waterway) was carried out. difference quantitative unicellular pro- eukaryotes different areas (coastal riverbed) more pronounced than seasons (spring flood summer low water). Cyanobacteria make greatest contribution to formation total biomass phytoplankton waterway. heterotrophic component (bacteria ciliata) is...
Abstract The characteristics of micro-scale vertical heterogeneity physicochemical parameters, photosynthetic pigments’ content and populations phototrophic microbial plankton in four karst lakes the Mari-Chodra NP (rep. Mari El), Bolshoy Kichier, Cherny Shungaldan Blue Oxbow, are presented on basis summer surveys 2006, 2007 2009. According to our data, two lakes, Kichier are, meromictic waterbodies crenogenic type; Lake is holomictic with stable stratification anoxic hypolimnion. Oxbow...
Abstract A detailed study of the distribution bacterioplankton and photosynthetic pigments Priplotinny Reach Kuibyshev Reservoir was carried out in early autumn 2020. The cell numbers were 0.8-2.1 10 6 cells ml −1 , biomass varied from 7 to 56 μg C L . average chlorophyll a concentration integral samples 2.91 varying range 1.1-9.6 (CV 30.7%). pheophytin content relatively low, 19.2 ± 10.4% concentration, indicating continued active phytoplankton development seston fall From September 17...
The first data on the phylogenetic diversity of planktonic communities pro- and microeukaryotes in different types water bodies Volga-Don basin during period cyanobacterial bloom are presented. Aphanizomenon flos-aquae/Dolichospermum flos-aquae blooms were found mainly Kuibyshev Reservoir; Planktothrix agardhii was observed floodplain lakes majority investigated rivers. Bloom Raphidiopsis raciborskii a lake Volga River terrace, pond Samara Anabaenopsis dominated anong Cyanobacteria. Among...
Abstract “Filamentous anoxygenic phototrophs” or “green non-sulfur bacteria” form a distinct lineage, order Chloroflexales (Chloroflexia: Chloroflexi) in broad polyphyletic group of phototrophic bacteria. Filamentous bacteria have apparently important, though not fully understood functions contemporary ecosystems and perhaps were much more significant the Archaean. However, since their discovery hot spring mats late 1960s, extremophilic species thermal, hypersaline and/or hyperalcaline...
The first data on the composition and diversity of summer planktonic protist community in Usinsky Bay adjacent water area Kuibyshev Reservoir, obtained using high-throughput sequencing 18S ribosomal RNA gene, are presented. In structure community, 1150 OTUs were found, among which representatives SAR supertaxon (Stramenopiles-Alveolata-Rhizaria) predominate. jointed library, dominated by Stramenopiles, represented, descending order, Chrysophyceae (8.5%), Opalozoa (8.3%), Diatomea (4.7%),...
Abstract The distribution if nuisance raphidophyte Gonyostomum semen in water bodies of protected natural areas the Middle Volga region is analyzed. abundance species was determined quantitatively eight lakes using method fixation with mercuric chloride. In four more lakes, it found by qualitative inspection live samples. It develops mainly high color, reaching cell number 7.5 10 6 cells L 1 , but also occurs clear-water minor (10-1600 −1 ). has been demonstrated that some ciliate e.g....