A5012342310- Marine and environmental studies
- Marine and coastal ecosystems
- Diatoms and Algae Research
- Marine Biology and Ecology Research
- Oceanographic and Atmospheric Processes
- Microbial Community Ecology and Physiology
- Transboundary Water Resource Management
- Aquatic Invertebrate Ecology and Behavior
- Aquatic and Environmental Studies
- Analytical Chemistry and Sensors
- Arctic and Antarctic ice dynamics
- Photoacoustic and Ultrasonic Imaging
- Microplastics and Plastic Pollution
- Methane Hydrates and Related Phenomena
- Aquatic Ecosystems and Phytoplankton Dynamics
- Slime Mold and Myxomycetes Research
- Polar Research and Ecology
- Lichen and fungal ecology
- Extraction and Separation Processes
- Mesoporous Materials and Catalysis
- Minerals Flotation and Separation Techniques
- Geological Studies and Exploration
- Biocrusts and Microbial Ecology
- Optical Imaging and Spectroscopy Techniques
- Recycling and Waste Management Techniques
Institute of Oceanology. PP Shirshov Russian Academy of Sciences
2008-2024
Institute of Applied Physics
2024
In recent decades, the waters off Antarctic Peninsula and surrounding region have undergone a significant transformation due to global climate change affecting structure distribution of pelagic fauna. Here, we present results our study on taxonomic composition quantitative plankton communities in Bransfield Strait, Sound, Powell Basin Weddell Sea, South Orkney Islands during austral summer 2022. A slight warming Transitional Zonal Water with Sea influence (TWW) an increase its area was...
Photoacoustic and fluorescent methods are used intensely in biology medicine. These approaches can also be to investigate unicellular diatom algae that extremely important for Earth's ecology. They enveloped within silica frustules (exoskeletons), which drug delivery systems. Here, we report the first time successful application of photoacoustic (PA) visualization diatoms. Chlorophyll a c fucoxanthin were found likely responsible effect The PA signal was obtained from gel drops containing...
The aim of this study is to trace how the fine-thermohaline and kinematic structure, formed over a section along 45.8° S in interaction zone outer Patagonian Shelf (PS) Malvinas (Falkland) Current (MC) System waters, affect spatial distribution bio-optical characteristics, phyto/zooplankton, birds, marine mammals. For first time, simultaneous multidisciplinary observations at high resolution (~2.5 km) were performed region during cruise R/V “Akademic Mstislav Keldysh” February 2022. A fine...
Moored near-bottom current velocity and water temperature measurements were performed during a period of 194 days (from October 2022 through April 2023) with 15-min sampling rate at two locations on the shelf Kazakhstan sector Caspian Sea in its Middle basin. The area has not been covered by situ over several decades. stations separated distance 22 km along coast. data collected 14 m depth analyzed together wind from local meteorological station, NCEP/NCAR reanalysis curl Sea, as well...
Any objects in natural water bodies are gradually colonized by hydrobionts such as algae and microorganisms. This is how phytoperiphyton formed. In recent decades, more plastic have ended up seas lakes. They substrates potentially suitable for colonization aquatic biota. the coastal Kazakhstan part of Caspian Sea, no studies yet been carried out on microfouling artificial polymer substrates. At same time, our observations shown, fouling can form extensive, clearly visible phenomena a...
Diatom algae are active and efficient photosynthesizing single cell organisms responsible for a quarter of biomass oxygen release on the Earth surface. Diatoms form an enormously diverse class microorganisms possessing stiff strong, durable exoskeletons made from hydrated amorphous silica forming neat 3D nanostructures, displaying hierarchical organization up to scale tens micrometres. In our ongoing research into structure properties diatoms we observed their colonization patterns various...
The results of study diatom fouling anthropogenic synthetic polymer materials, which have been studied rather poorly, are presented. These substrates a part the technogenic waste currently generated in large quantities coastal seas. As opaque matte experimental substrates, including engineering materials with given surface roughness, 73 taxa were noted, form communities associated particular type substrate, and characterized by certain structure quantitative distribution species. But 67...
Communities of microorganisms that form biofilms on the rocky shores Middle Caspian are capable maintaining integrity coastal landscape in conditions sea retreat associated with ongoing drop level since 1995. Algal-bacterial developing substrates East coast within City Aktau were studied autumn (October 2022) and spring (April 2023) seasons. biotopes different structure investigated. It has been established most stable diverse communities a pronounced vertical live areas high sheer cliffs...
undergone significant metamorphism of the water area, level total mineralization in various parts it, coastline, composition bottom sediments and surface – biota inhabiting it. The investigations carried out on material IORAN expeditions made it possible to trace main changes ichthyofauna Large Aral Sea during stage ultragalinization waters (the process steady salting, which continues beyond ultra-galaline physiological barrier 75 ppt), from 2002 2017. last species fish (Caspian aterin...
Oases of Antarctica are unique landscape compositions located within the continent and, at a considerable distance from coast. These areas glacier-free rocks and lakes that free snow in summer characterized by high peculiarity conditions for formation communities living organisms. Our studies performed on wide variety biotopes Bunger Hills revealed composition structure algocenoses these habitats, as well to establish their common features characteristic differences.
Photoacoustic imaging is a rapidly maturing modality in biological research and medicine. Its underlying principle the photoacoustic effect. This method can also be used to study algae containing light-absorbing chromophores, which produce signal under laser irradiation. Here, we demonstrate successful visualization of unicellular diatom called Karayevia amoena. These hierarchical micro/nano-structured organisms mixed with an agarose gel were excited by nanosecond pulsed green, 532 nm using...
Modern taxocenes of benthic diatoms coastal aquatic habitats the Severnaya Zemlya archipelago were studied for first time based on materials expedition in summer 2019. The following studied: sublittoral, littoral, as well semi-enclosed water bodies. In entire set communities, a total 180 species and subspecies (IST) noted. local α-diversity communities sublittoral was 6–26 IST (on average – 14.8), locations, including littoral 12–51 33). floristic groups coenotic have been identified...
We analysed the pattern of spatiotemporal distribution harpacticoid assemblages 106 plankton samples collected in May–August 2013–2015 Prostor Bay, South Kuril Islands (Sea Okhotsk). Taxonomically and ecologically diverse were found water column. Among 49 species identified, only one was truly planktonic, while others typically benthic, mainly phytal-dwelling forms. The most abundant rich (42 species) assemblage occupied shallow (10 m depth) area western, stone-bottomed part bay with a...