scholarly journals Microbial communities in regions of arctic settlements

2019 ◽  
Vol 95 (10) ◽  
pp. 923-929 ◽  
Author(s):  
Irina Yu. Kirtsideli ◽  
E. V. Abakumov ◽  
Sh. B. Teshebaev ◽  
M. S. Zelenskaya ◽  
D. Yu. Vlasov ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Contaminated Soils ◽  
Molecular Genetic ◽  
Arctic Region ◽  
The Arctic ◽  
Microscopic Fungi ◽  
Human Pathogens ◽  
Significant Similarity ◽  
Opportunistic Fungi ◽  
Anthropogenic Substrates

The composition and the structure of microbial communities in areas of Arctic settlements were studied. The main attention has been given to microscopic fungi. As result of observation of 5 Arctic regions 117 species of microscopic fungi are revealed in soils and anthropogenic substrates. The identification was carried out with the use ofmycological and molecular genetic methods. Most ofspecies belong to the Ascomycotina. Genus Penicillium is characterized by the most species diversity (24 species). Most offungi are destructors of various materials and potential human pathogens. Dominant species are revealed. The distribution of microorganisms in the living and working areas of polar stations, as well as the adjacent areas are described. Black-colored fungi adapted to unfavorable environment are often the dominated group of microorganisms on soils and anthropogenic substrates. The shaping of soil microbiota was shown to be related to the anthropogenic impact. Considerable similarity of microbial communities composition in the soil and man-made substrates is fixed. As result of mycological analysis of contaminated soils 76 species of microscopic fungi were observed, but 41 species of them (53.9%) were identified in the areas of Arctic polar stations on the man-made materials. These species include the representatives of the genera Alternaria, Aspergillus, Aureobasidium, Chaetomium, Cladosporium, Exophiala, Geomyces, Humicola, Penicillium, Mucor, Phoma, Rhodotorula, Trichoderma and Ulocladium. The obtained data show a significant similarity in species composition of contaminated soils and anthropogenic substrates. Human activity contributes to the distribution of cosmopolitan species, including opportunistic fungi, in the Arctic region. The high numbers of organotrophic bacteria were revealed in soil samples. Some species of microorganisms produce the organic acids in an external environment that promotes the erosion of materials.

scholarly journals CHANGES IN MICROBIAL COMMUNITIES IN PRIMARY SOIL AND GROUND UNDER THE ANTHROPOGENIC INFLUENCE ON THE TERRITORY AROUND ANTARCTIC STATION “MIRNY”

2019 ◽  
Vol 96 (10) ◽  
pp. 949-955 ◽  
Author(s):  
Irina Yu. Kirtsideli ◽  
Sh. B. Teshebaev ◽  
D. Yu. Vlasov ◽  
Yu. K. Novozhilov ◽  
E. V. Abakumov ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Contaminated Soils ◽  
Native Species ◽  
Fungal Species ◽  
Microscopic Fungi ◽  
Soil Microbial ◽  
Number Of Microorganisms ◽  
Anthropogenic Substrates ◽  
Almost All ◽  
Number Of Bacteria

Antarctic station “Mirny” was the first Russian (Soviet) polar station in Antarctica. The anthropogenic impact on the primary ground and soil in the area around of this polar station took place more than 60 years. This is reflected in both the chemical composition of the soil and microbial communities. The article shows multiple increasing of the number of bacteria and microscopic fungi in anthropogenic contaminated soils. Contamination of soil leads to changes of the structure of the microbial community. An increasing proportion of mesophilic bacteria isolates (90%) was shown. The increasing share spores and reduced the proportion of microscopic fungi mycelia were observed. Statistical analysis showed that we have identified almost all of the expected species that live in anthropogenic substrates (42 species), as well as in the control soils (17 species). But we identified only a part of fungal diversity in contaminated soils (32 species). The increase in the number of fungal species in the area of the polar station “Mirny” was proved to be connected with the human activity and introduction of new species. Native species of microscopic fungi were found to be able to colonize new materials previously unavailable to them. They also can be agents of active biodegradation of anthropogenic materials. Among fungal species isolated from anthropogenic contaminated soil and anthropogenic substrates more than 80% can be attributed to opportunistic organisms. Therefore the total number of microorganisms (CFU), the structure of the microbial complexes, the species composition of communities, indicator species, morphology and volume of biomass can be considered as an index of changes in soil microbial complexes and primary soils

scholarly journals Epidemiological significance of microbiote monitoring of arctic settlements along the Northern Sea Route

2022 ◽  
Vol 7 (4) ◽  
pp. 23-33
Author(s):  
L. A. Kraeva ◽  
A. L. Panin ◽  
A. E. Goncharov ◽  
A. B. Belov ◽  
D. Yu. Vlasov ◽  
...  
Keyword(s):  
Molecular Genetic ◽  
Arctic Region ◽  
The Arctic ◽  
Spectrometric Analysis ◽  
Economic Activities ◽  
Important Place ◽  
Microbiological Monitoring ◽  
Northern Sea Route ◽  
Epidemiological Monitoring ◽  
Methodological Principles

Monitoring of polar ecosystems is one of the most important areas of research in the use of Arctic territories in economic activities. An important place in such work is occupied by biomedical research aimed at identifying the risks of the occurrence of foci of infectious diseases in the areas of polar settlements.The purpose: to develop an algorithm for microbiological monitoring in the Arctic region.Materials and methods: classical bacteriological, mycological research, molecular-genetic, MALDI-TOF mass spectrometric analysis, phenotypic methods for determining antibiotic resistance, methods of mathematical data processing.Results and their discussion. The paper considers the scientific and methodological principles and the main stages of microbiota monitoring in the areas of polar settlements. The results of the study of samples from several territories along the Northern Sea Route are presented. The main habitats where potentially dangerous microorganisms should be detected are indicated. The role of anthropogenic invasion in the formation of Arctic microbiocenoses is noted. The trends of increasing the number and diversity of pathogenic microorganisms, both in the natural biocenoses of the Arctic and in the areas of polar settlements, are discussed. The necessity of microbiological monitoring as an integral part of epidemiological monitoring in the areas of Arctic settlements along the Northern Sea Route is substantiated.

scholarly journals Microfungi, algae and cyanobacteria in soils polluted with fluorine (Kola Peninsula, Russia)

2020 ◽  
Vol 10 (1) ◽  
pp. 94-109
Author(s):  
Vera V. Redkina ◽  
Regina R. Shalygina ◽  
Mariya V. Korneykova
Keyword(s):  
Contaminated Soil ◽  
Contaminated Soils ◽  
Fluorine Content ◽  
The Arctic ◽  
Opportunistic Fungi ◽  
Podzolic Soils ◽  
Colony Forming Units ◽  
Dry Soil ◽  
Characteristic Features ◽  
Polluted Zone

The analysis of algal-mycological complexes in Albic Podzolic soils affected by emissions of the Kandalaksha Aluminum Smelter (KAS) was carried out. The number and biomass of microscopic fungi in the maximum fluorine-polluted zone (fluorine-content >1000 mg/kg) more than 2 times lower than in distanced areas and amounted to 17.3 thousants colony-forming units/g and 1.33 mg/g respectively. Altogether, 31 species of soil fungi were isolated. The species Penicillium trzebinskii and P. miczynskii dominated the zone of maximum pollution. P. glabrum, P. spinulosum, and Memnoniella echinata prevailed in the zones of moderate pollution and background. The part of opportunistic fungi in contaminated soil increased in comparison with the background soil. The reduction of dark-colored fungi biomass in contaminated soil was noted. In total, 56 species of eukaryotic algae and 7 species of cyanobacteria were found. Among green algae, the species from families Chlorophyceae and Trebouxiophyceae dominated in all plots. In the zones of maximum and strong contamination, 53 algae species were found including xanthophytes, which were absent in unpolluted areas. The number of viable cells in the litter of the maximum contaminated soils varied from 100 thousand to 1.5 million in 1 g of absolutely dry soil. The species composition of algae and cyanobacteria in these soils showed the characteristic features of the Arctic biological soil crusts.

STORM ICE OIL WIND WAVE WATCH SYSTEM (SIOWS): WEB GIS APPLICATION FOR MONITORING THE ARCTIC

2017 ◽  
Author(s):  
Alexander Myasoedov ◽  
Alexander Myasoedov ◽  
Sergey Azarov ◽  
Sergey Azarov ◽  
Ekaterina Balashova ◽  
...  
Keyword(s):  
Satellite Data ◽  
Wind Wave ◽  
Arctic Region ◽  
Web Gis ◽  
The Arctic ◽  
Flexible Tool ◽  
In Situ Data ◽  
Current State ◽  
Watch System

Working with satellite data, has long been an issue for users which has often prevented from a wider use of these data because of Volume, Access, Format and Data Combination. The purpose of the Storm Ice Oil Wind Wave Watch System (SIOWS) developed at Satellite Oceanography Laboratory (SOLab) is to solve the main issues encountered with satellite data and to provide users with a fast and flexible tool to select and extract data within massive archives that match exactly its needs or interest improving the efficiency of the monitoring system of geophysical conditions in the Arctic. SIOWS - is a Web GIS, designed to display various satellite, model and in situ data, it uses developed at SOLab storing, processing and visualization technologies for operational and archived data. It allows synergistic analysis of both historical data and monitoring of the current state and dynamics of the "ocean-atmosphere-cryosphere" system in the Arctic region, as well as Arctic system forecasting based on thermodynamic models with satellite data assimilation.

Prévoir les variations saisonnières de la glace de mer arctique et leurs impacts sur le climat

2020 ◽  
pp. 024
Author(s):  
Rym Msadek ◽  
Gilles Garric ◽  
Sara Fleury ◽  
Florent Garnier ◽  
Lauriane Batté ◽  
...  
Keyword(s):  
Sea Ice ◽  
Arctic Region ◽  
Arctic Sea Ice ◽  
Climate Impacts ◽  
The Arctic ◽  
Recent Effort ◽  
Sea Ice Thickness ◽  
Arctic Sea ◽  
Ice Conditions ◽  
Upper Level

L'Arctique est la région du globe qui s'est réchauffée le plus vite au cours des trente dernières années, avec une augmentation de la température de surface environ deux fois plus rapide que pour la moyenne globale. Le déclin de la banquise arctique observé depuis le début de l'ère satellitaire et attribué principalement à l'augmentation de la concentration des gaz à effet de serre aurait joué un rôle important dans cette amplification des températures au pôle. Cette fonte importante des glaces arctiques, qui devrait s'accélérer dans les décennies à venir, pourrait modifier les vents en haute altitude et potentiellement avoir un impact sur le climat des moyennes latitudes. L'étendue de la banquise arctique varie considérablement d'une saison à l'autre, d'une année à l'autre, d'une décennie à l'autre. Améliorer notre capacité à prévoir ces variations nécessite de comprendre, observer et modéliser les interactions entre la banquise et les autres composantes du système Terre, telles que l'océan, l'atmosphère ou la biosphère, à différentes échelles de temps. La réalisation de prévisions saisonnières de la banquise arctique est très récente comparée aux prévisions du temps ou aux prévisions saisonnières de paramètres météorologiques (température, précipitation). Les résultats ayant émergé au cours des dix dernières années mettent en évidence l'importance des observations de l'épaisseur de la glace de mer pour prévoir l'évolution de la banquise estivale plusieurs mois à l'avance. Surface temperatures over the Arctic region have been increasing twice as fast as global mean temperatures, a phenomenon known as arctic amplification. One main contributor to this polar warming is the large decline of Arctic sea ice observed since the beginning of satellite observations, which has been attributed to the increase of greenhouse gases. The acceleration of Arctic sea ice loss that is projected for the coming decades could modify the upper level atmospheric circulation yielding climate impacts up to the mid-latitudes. There is considerable variability in the spatial extent of ice cover on seasonal, interannual and decadal time scales. Better understanding, observing and modelling the interactions between sea ice and the other components of the climate system is key for improved predictions of Arctic sea ice in the future. Running operational-like seasonal predictions of Arctic sea ice is a quite recent effort compared to weather predictions or seasonal predictions of atmospheric fields like temperature or precipitation. Recent results stress the importance of sea ice thickness observations to improve seasonal predictions of Arctic sea ice conditions during summer.

Nuclear icebreaker fleet and power supply on the basis of floating power units

2018 ◽  
Vol 35 (4) ◽  
pp. 110-113
Author(s):  
V. A. Tupchienko ◽  
H. G. Imanova
Keyword(s):  
Foreign Policy ◽  
Power Supply ◽  
Nuclear Power ◽  
Arctic Region ◽  
Nuclear Industry ◽  
The Arctic ◽  
Far North ◽  
The Arctic Region

The article deals with the problem of the development of the domestic nuclear icebreaker fleet in the context of the implementation of nuclear logistics in the Arctic. The paper analyzes the key achievements of the Russian nuclear industry, highlights the key areas of development of the nuclear sector in the Far North, and identifies aspects of the development of mechanisms to ensure access to energy on the basis of floating nuclear power units. It is found that Russia is currently a leader in the implementation of the nuclear aspect of foreign policy and in providing energy to the Arctic region.

Chemical Composition of Atmospheric Aerosol in the Arctic Region and Adjoining Seas along the Routes of Marine Expeditions in 2018–2019

2020 ◽  
Vol 33 (5) ◽  
pp. 480-489
Author(s):  
L. P. Golobokova ◽  
T. V. Khodzher ◽  
O. N. Izosimova ◽  
P. N. Zenkova ◽  
A. O. Pochyufarov ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Atmospheric Aerosol ◽  
Arctic Region ◽  
The Arctic ◽  
The Arctic Region

Estimating Friction Reduction ForCasing Operations in High-Angle Wells in The Arctic Region - A Russia Case History

2011 ◽  
Author(s):  
Chimerebere Onyekwere Nkwocha ◽  
Evgeny Glebov ◽  
Alexey Zhludov ◽  
Sergey Galantsev ◽  
David Kay
Keyword(s):  
Case History ◽  
Arctic Region ◽  
Friction Reduction ◽  
The Arctic ◽  
High Angle ◽  
The Arctic Region

scholarly journals Temperature and Relative Humidity Profile Retrieval from Fengyun-3D/HIRAS in the Arctic Region

2021 ◽  
Vol 13 (10) ◽  
pp. 1884
Author(s):  
Jingjing Hu ◽  
Yansong Bao ◽  
Jian Liu ◽  
Hui Liu ◽  
George P. Petropoulos ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Real Time ◽  
Wide Spectrum ◽  
Warm Season ◽  
Arctic Region ◽  
Cold Season ◽  
The Arctic ◽  
Practical Applications ◽  
A New Technique ◽  
The Arctic Region

The acquisition of real-time temperature and relative humidity (RH) profiles in the Arctic is of great significance for the study of the Arctic’s climate and Arctic scientific research. However, the operational algorithm of Fengyun-3D only takes into account areas within 60°N, the innovation of this work is that a new technique based on Neural Network (NN) algorithm was proposed, which can retrieve these parameters in real time from the Fengyun-3D Hyperspectral Infrared Radiation Atmospheric Sounding (HIRAS) observations in the Arctic region. Considering the difficulty of obtaining a large amount of actual observation (such as radiosonde) in the Arctic region, collocated ERA5 data from European Centre for Medium-Range Weather Forecasts (ECMWF) and HIRAS observations were used to train the neural networks (NNs). Brightness temperature and training targets were classified using two variables: season (warm season and cold season) and surface type (ocean and land). NNs-based retrievals were compared with ERA5 data and radiosonde observations (RAOBs) independent of the NN training sets. Results showed that (1) the NNs retrievals accuracy is generally higher on warm season and ocean; (2) the root-mean-square error (RMSE) of retrieved profiles is generally slightly higher in the RAOB comparisons than in the ERA5 comparisons, but the variation trend of errors with height is consistent; (3) the retrieved profiles by the NN method are closer to ERA5, comparing with the AIRS products. All the results demonstrated the potential value in time and space of NN algorithm in retrieving temperature and relative humidity profiles of the Arctic region from HIRAS observations under clear-sky conditions. As such, the proposed NN algorithm provides a valuable pathway for retrieving reliably temperature and RH profiles from HIRAS observations in the Arctic region, providing information of practical value in a wide spectrum of practical applications and research investigations alike.All in all, our work has important implications in broadening Fengyun-3D’s operational implementation range from within 60°N to the Arctic region.

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