A5083566416- Marine and environmental studies
- Marine and coastal ecosystems
- Aquatic and Environmental Studies
- Food Industry and Aquatic Biology
- Marine Biology and Ecology Research
- Isotope Analysis in Ecology
- Methane Hydrates and Related Phenomena
- Arctic and Antarctic ice dynamics
- Marine Invertebrate Physiology and Ecology
- Diatoms and Algae Research
- Marine and coastal plant biology
- Algal biology and biofuel production
- Ocean Acidification Effects and Responses
- Aquatic Invertebrate Ecology and Behavior
- Microbial Community Ecology and Physiology
- Marine Toxins and Detection Methods
- Oceanographic and Atmospheric Processes
- Aquatic Ecosystems and Phytoplankton Dynamics
- Marine Ecology and Invasive Species
- Chemical Reactions and Mechanisms
- Synthesis and characterization of novel inorganic/organometallic compounds
- Digital Transformation in Law
- Biological Control of Invasive Species
- Environmental and Biological Research in Conflict Zones
- Parasite Biology and Host Interactions
Institute of Oceanology. PP Shirshov Russian Academy of Sciences
2015-2024
Russian Academy of Sciences
2011-2023
Federal Center Research Fundamentals of Biotechnology
2023
Czech Academy of Sciences, Institute of Microbiology
2023
Institute of Industrial Ecology
1989
Abstract Long-term (2004–2020) studies showed yearly summer/autumn blooms in the NE Black Sea dominated by large (cell volume > 5000 μm3) diatoms (Pseudosolenia calcar-avis and Proboscia alata). This phenomenon is characterized high (>250 W m−2 photosynthetically active radiation, PAR) insolation, low phosphorus concentrations (to analytical zero). These contained >100 chloroplasts per cell, which at irradiance are evenly distributed throughout cell. As light increases...
In August 2020, during a dramatical summer retreat of sea ice in the Nansen Basin, study phytoplankton was conducted on transect from two northern stations marginal zone (MIZ) (north 83° N m and east 38° E) through open water to southern station located Franz Victoria Trench. The presence melted polar surface waters (mPSW), (PSW), Atlantic (AW) were characteristic MIZ. There are only masses water, namely PSW AW, at southernmost station; contribution AW minimal. MIZ, first-year multiyear...
A modified regional algorithm to quantify the coccolithophore concentration in northeastern part of Black Sea under conditions intense bloom is presented. To modify algorithm, data situ measurements Emiliania huxleyi abundance performed June 2017 and 2022 (when maximum values were 9 × 106 13 Cells L−1, respectively), as well from hydro-optical satellite measurements, used. In addition, ratio between number detached coccoliths cells was taken into account. Based on expanded array data,...
A role of phosphorus in regulation mass development Emiliania huxleyi (Lohm.) Hay et Mohl. the northeastern part Black Sea was investigated laboratory experiments with use bath culture and mathematic methods. It shown that low nitrogen/phosphorus ratio does not necessarily point to nitrogen as limiting factor for coccolithophorids growth. The reaction phytoplankton community supply depends on species composition dominating complex. supplement nutrients base where complex included diatoms...
The seasonal dynamics of the NE Black Sea phytoplankton follow following pattern: small diatoms (spring) → coccolithophorid Emiliania huxleyi (late spring–early summer) large (summer). Our hypothesis states that nitrogen and phosphorus concentrations regulate dynamics. A minimum number parameters is enough to understand mechanisms dominant species change. Based on concept intracellular regulation, were evaluated: quotas; half-saturation constants for uptake; maximum specific growth rate...
Biogeochemistry of waters is an essential regulator phytoplankton dynamics, determining the level species bloom and change dominants. The paper investigated seasonal dynamics nutrient concentration their ratios in NE Black Sea 2017-2021. Two taxonomic groups, diatoms, coccolithophores, determine significantly contribute to total biomass. Coccolithophores annually, except 2020, formed early June. Large diatoms summer 2019, dominated with biomass exceeding 1000 mg m-3. During these...
The biogeochemistry of waters is an essential regulator phytoplankton dynamics, determining the level species bloom and change in dominants. This paper investigated seasonal dynamics nutrient concentrations their ratios northeastern Black Sea 2017–2021. Two taxonomic groups, diatoms coccolithophores, determine significantly contribute to total biomass. Coccolithophores formed blooms early June annually, except 2020. Large dominated summer with a biomass exceeding 1000 mg m−3 2019. During...
Studies of the annual dynamics phytoplankton in NE Black Sea at two stations on shelf and continental slope were conducted 2016, 2017, 2019. The species composition has not undergone significant changes compared to previous decades. coccolithophore Emiliania huxleyi, small flagellates, diatoms determined abundance phytoplankton; diatoms, coccolithophores, dinoflagellates total biomass. satellite-derived chlorophyll-a showed peaks spring autumn, sometimes summer. During stratified water...