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First data on the uranium content in water of the Yenisei River basin in the area affected by the operation of Rosatom plants / A. Y. Bolsunovskii [et al.] // Doklady Earth Sciences. - 2011. - Vol. 439, Is. 1. - P1010-1015, DOI 10.1134/S1028334X11070208 . - ISSN 1028-334X
Кл.слова (ненормированные):
Inorganic chemistry -- Isotope ratio -- Isotopic composition -- Long term monitoring -- River basins -- Russian Academy of Sciences -- Uranium contents -- Uranium isotopes -- Water samples -- Effluents -- Inorganic compounds -- Isotopes -- Mass spectrometry -- Nuclear fuels -- Rivers -- Uranium -- Watersheds -- Water content -- effluent -- environmental monitoring -- isotopic composition -- isotopic ratio -- mass spectrometry -- tributary -- uranium isotope -- Russian Federation -- Yenisei River
Аннотация: This study is devoted to investigating the content of uranium isotopes in water of the Yenisei River and its tributaries within the territories affected by the operation of Rosatom plants (mining chemical combine, and electrochemical plant). Long-term monitoring of the 238U content by mass spectrometry carried out in two institutes of the Siberian Branch of the Russian Academy of Sciences first revealed the multiple excess of 238U over the background content in different areas of the Yenisei River basin, such as the region of the Yenisei River near the effluents of the mining and chemical combine (MCC), and the territories of the Bol'shaya Tel' and Kan rivers. In these regions, the 238U content in water reaches 2.1-4.0 ?g/l, which exceeds its content upstream from the MCC (0.3-0.6 ?g/l) by almost an order of magnitude. The studies of the isotopic composition of uranium in water samples, which were carried out at the Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, showed the presence of a technogenic isotope of uranium 236U in the samples from the Bolshaya Tel' River and revealed the deviation of the isotope ratio 238U/ 235U (167 В± 3 and 177 В± 3) from the equilibrium natural ratio ( 238U/ 235U = 138). These facts attest to the technogenic origin of part of the uranium in water of the Bol'shaya Tel' River connected with the activity of MCC. The excess uranium content in the Kan River requires additional studies to ascertain the fraction of uranium of technogenic origin connected with the activity of the electrochemical plant (ECP) (Fig. 1, Table 4). В© 2011 Pleiades Publishing, Ltd.

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Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Engineering, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovskii, A.Y.; Zhizhaev, A.M.; Saprykin, A.I.; Degermendzhi, A.G.; Rubailo, A.I.

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Assessment of the rate of accumulation of the transuranium element americium-241 by the aquatic plant Elodea canadensis / A. Ya. Bolsunovskii [et al.] // Doklady Biological Sciences. - 2004. - Vol. 399, Is. 1-6. - P467-469, DOI 10.1007/s10630-005-0014-0 . - ISSN 0012-4966
Кл.слова (ненормированные):
americium -- radioisotope -- water -- article -- biomass -- drug effect -- environmental monitoring -- Hydrocharitaceae -- methodology -- pH -- plant -- plant root -- radiation exposure -- radiochemistry -- time -- toxicity testing -- water pollutant -- Americium -- Biomass -- Environmental Monitoring -- Hydrocharitaceae -- Hydrogen-Ion Concentration -- Plant Roots -- Plant Shoots -- Plants -- Radiochemistry -- Radioisotopes -- Time Factors -- Toxicity Tests -- Water -- Water Pollutants, Radioactive -- Elodea canadensis

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovskii, A.Ya.; Zotina, T.A.; Bondareva, L.G.; Degermendzhi, A.G.

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Evidence of the radioactive fallout in the center of asia (russia) following the fukushima nuclear accident / A. Bolsunovsky, D. Dementyev // Journal of Environmental Radioactivity. - 2011. - Vol. 102, Is. 11. - P1062-1064, DOI 10.1016/j.jenvrad.2011.06.007 . - ISSN 0265-931X
Кл.слова (ненормированные):
Environmental samples -- Fission product radionuclides -- Fukushima nuclear accident -- Radioactive fallout -- Russia -- Chernobyl accident -- Environmental sample -- Fallout radionuclides -- Global effects -- High velocity -- Nuclear accidents -- Radioactive contamination -- Russia -- Water samples -- Cesium -- Fallout -- Fission products -- Radioactivity -- Radioisotopes -- Nuclear reactor accidents -- cesium 137 -- iodine 131 -- rain -- atmospheric pollution -- cesium isotope -- fallout -- nuclear accident -- radioactive pollution -- radionuclide -- article -- environmental exposure -- gamma spectrometry -- nuclear accident -- radioactive contamination -- radioactive waste -- water analysis -- water contamination -- Cesium Radioisotopes -- Cities -- Humans -- Iodine Radioisotopes -- Japan -- Radiation Dosage -- Radiation Monitoring -- Radioactive Fallout -- Radioactive Hazard Release -- Radioactive Pollutants -- Risk Assessment -- Russia -- Time Factors -- Fukushima -- Honshu -- Japan -- Krasnoyarsk [Russian Federation] -- Russian Federation -- Tohoku
Аннотация: It was recently reported that radioactive fallout due to the Fukushima Nuclear Accident was detected in environmental samples collected in the USA and Greece, which are very far away from Japan. In April-May 2011, fallout radionuclides ( 134Cs, 137Cs, 131I) released in the Fukushima Nuclear Accident were detected in environmental samples at the city of Krasnoyarsk (Russia), situated in the center of Asia. Similar maximum levels of 131I and 137Cs/ 134Cs and 131I/ 137Cs ratios in water samples collected in Russia and Greece suggest the high-velocity movement of the radioactive contamination from the Fukushima Nuclear Accident and the global effects of this accident, similar to those caused by the Chernobyl accident. В© 2011 Elsevier Ltd.

Scopus
Держатели документа:
Radioecology Laboratory, Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, 50-50, 660036 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.; Dementyev, D.

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Chemical fractionation of radionuclides and stable elements in aquatic plants of the yenisei river / A. Bolsunovsky // Environmental Science and Technology. - 2011. - Vol. 45, Is. 17. - P7143-7150, DOI 10.1021/es2008853 . - ISSN 0013-936X
Кл.слова (ненормированные):
Aquatic plants -- Artificial radionuclides -- Cell structure -- Chemical Fractionation -- Distribution patterns -- Nuclear plant -- Plant biomass -- Sequential extraction scheme -- Stable elements -- Submerged plants -- Transuranic elements -- Americium -- Biomass -- Neptunium -- River pollution -- Rivers -- Radioisotopes -- americium -- element -- neptunium -- radioisotope -- bioaccumulation -- chemical binding -- gamma ray spectrometry -- isotopic fractionation -- monocotyledon -- phytomass -- radionuclide -- river pollution -- submerged vegetation -- aquatic species -- article -- Batrachium kauffmanii -- biomass -- cell structure -- controlled study -- extraction -- Fontinalis antipyretica -- fractionation -- gamma spectrometry -- higher plant -- nonhuman -- plant growth -- Potamogeton lucens -- Potamogetonaceae -- river -- Russian Federation -- Aquatic Organisms -- Biomass -- Chemical Fractionation -- China -- Industrial Waste -- Plants -- Radiation Monitoring -- Radioisotopes -- Rivers -- Water Pollutants, Radioactive -- Russian Federation -- Yenisei River -- Batrachium -- Fontinalis antipyretica -- Potamogeton lucens
Аннотация: The Yenisei River is contaminated with artificial radionuclides released by one of the Russian nuclear plants. The aquatic plants growing in the radioactively contaminated parts of the river contain artificial radionuclides. The aim of the study was to investigate accumulation of artificial radionuclides and stable elements by submerged plants of the Yenisei River and estimate the strength of their binding to plant biomass by using a new sequential extraction scheme. The aquatic plants sampled were: Potamogeton lucens, Fontinalis antipyretica, and Batrachium kauffmanii. Gamma-spectrometric analysis of the samples of aquatic plants has revealed more than 20 radionuclides. We also investigated the chemical fractionation of radionuclides and stable elements in the biomass and rated radionuclides and stable elements based on their distribution in biomass. The greatest number of radionuclides strongly bound to biomass cell structures was found for Potamogeton lucens and the smallest for Batrachium kauffmanii. For Fontinalis antipyretica, the number of distribution patterns that were similar for both radioactive isotopes and their stable counterparts was greater than for the other studied species. The transuranic elements 239Np and 241Am were found in the intracellular fraction of the biomass, and this suggested their active accumulation by the plants. В© 2011 American Chemical Society.

Scopus
Держатели документа:
Institute of Biophysics SB, Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.

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Detoxification of AM-241 solutions by humic substances: Bioluminescent monitoring / T. Rozhko [et al.] // Analytical and Bioanalytical Chemistry. - 2011. - Vol. 400, Is. 2. - P329-334, DOI 10.1007/s00216-010-4442-9 . - ISSN 1618-2642
Кл.слова (ненормированные):
Detoxification -- Humic substances -- Ionizing radiation -- Luminous bacteria -- Bacterial cells -- Bottom sediments -- Humic substances -- Luminescent intensity -- Luminous bacteria -- Natural transformations -- Organic substances -- Photobacterium phosphoreum -- Physiological activity -- Protecting agent -- Water solutions -- Anoxic sediments -- Bacteriology -- Bioluminescence -- Detoxification -- Ionizing radiation -- Luminance -- Radiation shielding -- Radioactivity -- Bacteria -- americium -- radioisotope -- article -- bioremediation -- chemistry -- environmental monitoring -- evaluation -- humic substance -- instrumentation -- luminescence -- metabolism -- methodology -- Photobacterium -- water pollutant -- Americium -- Biodegradation, Environmental -- Environmental Monitoring -- Humic Substances -- Luminescence -- Photobacterium -- Radioisotopes -- Water Pollutants, Chemical -- Bacteria (microorganisms) -- Photobacterium phosphoreum
Аннотация: The study addresses the effect of humic substances on marine luminous bacteria Photobacterium phosphoreum exposed to Am-241 (3,000 Bq L -1, water solution). Luminescent intensity of the bacteria was applied as a marker of their physiological activity. Humic substances have been found to reduce the effect of Am-241 on luminescence, decrease damage to cells, and change distribution of Am-241 between bacterial cells and intercellular media. It was shown that water-soluble humic substances, being products of natural transformation of organic substances in soil and bottom sediments, can serve as protecting agents for water microorganisms exposed to alpha radionuclides. В© 2010 Springer-Verlag.

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Держатели документа:
Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Institute of Biophysics SB RAS, Krasnoyarsk 660036, Russian Federation
Irkutsk State University, Irkutsk 664003, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Rozhko, T.; Bondareva, L.; Mogilnaya, O.; Vydryakova, G.; Bolsunovsky, A.; Stom, D.; Kudryasheva, N.

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Accumulation of 242Pu by a macrophyte of the Yenisei River (Elodea canadensis) in laboratory experiments / A. Bolsunovsky [et al.] // Chemosphere. - 2009. - Vol. 75, Is. 3. - P284-288, DOI 10.1016/j.chemosphere.2008.12.036 . - ISSN 0045-6535
Кл.слова (ненормированные):
242Pu -- Accumulation -- Laboratory experiments -- Sequential extraction technique -- Submerged plant Elodea canadensis -- Yenisei River -- sup242/supPu -- Accumulation -- Laboratory experiments -- Sequential extraction technique -- Submerged plant Elodea canadensis -- Yenisei River -- Biological materials -- Biomass -- Chemical plants -- Experiments -- Positive ions -- Rivers -- Plutonium -- concentration (composition) -- experimental study -- laboratory method -- macrophyte -- plutonium isotope -- river water -- submerged vegetation -- Eurasia -- Russian Federation -- Yenisei River -- plutonium -- article -- biomass -- chemistry -- Hydrocharitaceae -- physiology -- plant -- radiation monitoring -- river -- time -- water pollutant -- Biomass -- Hydrocharitaceae -- Plant Shoots -- Plutonium -- Radiation Monitoring -- Rivers -- Time Factors -- Water Pollutants, Radioactive
Аннотация: The study addresses 242Pu accumulation by Elodea canadensis, one of the abundant species of submerged plants in the Yenisei River. 242Pu in water samples of the "Elodea - Yenisei River water" model system and in the biomass fractions was determined ?-spectrometrically, following radiochemical recovery of 242Pu using 236Pu - a chemical yield tracer. The experiments on accumulation of 242Pu by Elodea biomass showed that the activity concentration of 242Pu can reach 21 В± 2 Bq/g dry wt, with the concentration factor for 242Pu 13100 В± 2100 L/kg dry wt. Results of chemical fractionation proved that during the first few hours of the experiment 242Pu contained in Elodea was mainly concentrated in the exchangeable and the adsorbed fractions of biomass (about 100%). As Elodea biomass accumulated 242Pu, the absolute amount of 242Pu in the exchangeable and the adsorbed fractions remained almost unchanged, although the portion of 242Pu tightly bound to biomass increased. At the end of the experiment, on day 7, 242Pu tightly bound to biomass (fractions of organics and mineral residue) constituted 43-63% (in different experiments) of the total 242Pu in the biomass. В© 2008 Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, the Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Geology and Mineralogy, Siberian Branch, the Russian Academy of Sciences, Novosibirsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.; Bondareva, L.; Sukhorukov, F.; Melgunov, M.

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Accumulation and release of 241Am by a macrophyte of the Yenisei River (Elodea canadensis) / A. Bolsunovsky, T. Zotina, L. Bondareva // Journal of Environmental Radioactivity. - 2005. - Vol. 81, Is. 1. - P33-46, DOI 10.1016/j.jenvrad.2004.10.012 . - ISSN 0265-931X
Кл.слова (ненормированные):
241Am -- Accumulation -- Laboratory experiments -- Release -- Submerged plant Elodea canadensis -- Yenisei River -- Activation analysis -- Biomass -- Concentration (process) -- Effluents -- Plutonium -- Rivers -- Aquatic plants -- Elodea plant -- Macrophytes -- Radioactive contamination -- Transuranium elements -- americium 241 -- river water -- americium -- americium nitrate -- bioaccumulation -- biological uptake -- macrophyte -- pollutant source -- radioactive pollution -- river water -- submerged vegetation -- article -- biomass -- concentration (parameters) -- environmental factor -- fractionation -- laboratory -- macrophyte -- radioactivity -- river -- sampling -- adsorption -- chemistry -- Hydrocharitaceae -- methodology -- physiology -- plant -- radiation exposure -- radiation monitoring -- Russian Federation -- sediment -- soil pollutant -- time -- tissue distribution -- water pollutant -- Eastern Hemisphere -- Eurasia -- Russian Federation -- World -- Yenisei River -- Elodea canadensis -- Adsorption -- Americium -- Biomass -- Chemical Fractionation -- Geologic Sediments -- Hydrocharitaceae -- Plant Shoots -- Radiation Monitoring -- Rivers -- Russia -- Soil Pollutants, Radioactive -- Time Factors -- Tissue Distribution -- Water Pollutants, Radioactive
Аннотация: The source of radioactive contamination of the Yenisei River floodplain, including contamination with transuranic elements, is the Mining-and-Chemical Combine of the Russian Ministry of Atomic Energy, which has for many years been producing weapons-grade plutonium. Transuranic elements have been detected not only in the soil and sediment of the river but also in the biomass of aquatic plants. This work is an investigation of accumulation and release of 241Am by a submerged macrophyte of the Yenisei River (Elodea canadensis) in laboratory experiments. In 2000-2003, laboratory experiments were carried out with biomass of E. canadensis Mich. and filtered river water. The samples were collected from the Yenisei River upstream of the discharge of the Combine's radioactive effluent. The experiments showed that 241Am is accumulated by Elodea biomass: the activity concentration of 241Am can reach 3280 В± 240 Bq/g, with the concentration factor for 241Am 16 600 В± 2200 l/kg. Results of chemical fractionation have proved that in the course of 241Am accumulation by Elodea biomass, 241Am tightly bound to biomass increases from 11% to 27% of the total 241Am in the biomass. Release of 241Am from the decaying Elodea biomass has been evaluated experimentally. By the end of the experiment (lasting up to 127 days), the Elodea plants had lost up to 65% of their initial 241Am activity and the rate of 241Am release into the water environment reached 23 Bq/day. В© 2004 Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.; Zotina, T.; Bondareva, L.

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Sediments of the Yenisei River: Monitoring of radionuclide levels and estimation of sedimentation rates / A. Bolsunovsky, D. Dementyev // IAHS-AISH Publication. - 2010. - Vol. 337: Symposium on Sediment Dynamics for a Changing Future (14 June 2010 through 18 June 2010, Warsaw) Conference code: 84220. - P143-148
Кл.слова (ненормированные):
Artificial and natural radionuclides -- Dating methods -- River sediments -- Sedimentation rates -- Yenisei river -- Dating methods -- Natural radionuclides -- River sediments -- Sedimentation rates -- Yenisei river -- Anoxic sediments -- Cesium -- Europium -- Lead -- Nuclear energy -- Nuclear weapons -- Plutonium -- Radioisotopes -- River pollution -- Sedimentation -- Sedimentology -- Strontium -- Uranium -- Rivers -- cesium isotope -- cobalt isotope -- europium -- fluvial deposit -- plutonium isotope -- radioactive pollution -- radioactive waste -- radionuclide -- sampling -- sediment core -- sediment pollution -- sedimentation rate -- Krasnoyarsk [Russian Federation] -- Russian Federation -- Yenisei River
Аннотация: The Yenisei River, one of the largest rivers in the world, is contaminated with artificial radionuclides released by a Russian nuclear facility producing weapon-grade plutonium, which has been in operation for many years. Examination of Yenisei River sediment samples revealed the presence of artificial radionuclides typical of radioactive discharge from the Mining-and-Chemical- Combine (MCC) nuclear facility: isotopes of europium ( 152Eu, 154Eu, and 155Eu), caesium ( 137Cs and 134Cs), 60Co, 90Sr, and transuranium elements. Maximum radionuclide concentrations in sediments remained high as far as 240 km downstream of the MCC. In sediment cores collected upstream of the MCC, ?-spectrometric measurements registered only one artificial radionuclide, 137Cs, with a maximum activity of approx. 8 Bq kg -1 dry mass. Sediments of the Yenisei River also contain natural radionuclides. Sedimentation rates in several sections of the Yenisei River were determined using, different approaches: the 210Pb dating method and the ratios of artificial radionuclides - 137Cs/ 60Co and 152Eu/ 154Eu. With increasing distance downstream of the city of Krasnoyarsk, sedimentation rates increased from 0.88 cm year -1 to 1.30-1.51 cm year -1. Copyright В© 2010 IAHS Press.

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Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok, 660036, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.; Dementyev, D.

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Microdistribution of 241Am in structures of submerged macrophyte Elodea canadensis growing in the Yenisei River / L. Bondareva [et al.] // Journal of Environmental Radioactivity. - 2010. - Vol. 101, Is. 1. - P16-21, DOI 10.1016/j.jenvrad.2009.08.003 . - ISSN 0265-931X
Кл.слова (ненормированные):
Alpha-track analysis -- Americium -- Elodea canadensis -- Liquid-scintillation spectrometry -- Microdistribution -- Alpha-track analysis -- Elodea canadensis -- Microdistribution -- Scintillation spectrometry -- Track analysis -- Liquids -- Luminescence -- Radioisotopes -- Scintillation -- Spectrometry -- Spectroscopy -- Americium -- americium 241 -- americium -- americium -- bioaccumulation -- experimental study -- leaf -- macrophyte -- mass spectrometry -- morphology -- radionuclide -- spatial distribution -- stem -- submerged vegetation -- tracking -- aquatic flora -- article -- bioaccumulation -- concentration (parameters) -- elodea canadensis -- environmental radioactivity -- isotope analysis -- isotope tracing -- leaf lamina -- leaf surface -- macrophyte -- nonhuman -- plant cell -- plant morphology -- plant stem -- radioisotope distribution -- river -- chemistry -- Hydrocharitaceae -- metabolism -- plant -- plant leaf -- radiation monitoring -- river -- water pollutant -- Eurasia -- Russian Federation -- Yenisei River -- Elodea canadensis -- Americium -- Hydrocharitaceae -- Plant Leaves -- Plant Shoots -- Plant Stems -- Radiation Monitoring -- Rivers -- Water Pollutants, Radioactive
Аннотация: A submerged macrophyte of the Yenisei River, Elodea canadensis, was used to study the microdistribution of the artificial radionuclide 241Am among different components of the plant. The total amount of 241Am added to the experimental system was 1850 В± 31 Bq/L. The total amount of 241Am accumulated by the plants was 182 Bq per sample, or 758,333 В± 385 Bq/kg dry mass. It has been found that the major portion of 241Am accumulated by E. canadensis, up to 85%, was bound to solid components of the cells. It is observed that the microdistribution of 241Am within different components of the submerged plant E. canadensis was not uniform. 241Am distribution vary depending on the age of the leaf blades, the state of the cells and morphological features of the plant stem. В© 2009 Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, 50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Chemistry Department, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bondareva, L.; Vlasova, I.; Mogilnaya, O.; Bolsunovsky, A.; Kalmykov, S.

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10.

Understanding the mechanisms of blooming of phytoplankton in Lake Shira, a saline lake in Siberia (the Republic of Khakasia) / A. G. Degermendzhy, R. D. Gulati // Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - P331-340 . - ISSN 1386-2588
Кл.слова (ненормированные):
Carbon budget -- Cyanobacteria -- Heterotrophic bacteria -- Hydrogen sulphide -- Mathematical models of stratification -- Meromictic lakes -- Microbial loop -- Stratification -- Trophic scheme -- algal bloom -- ecosystem modeling -- limiting factor -- nutrient availability -- phytoplankton -- saline lake -- trophic interaction -- Russian Federation -- algae -- Bacteria (microorganisms) -- Cyanobacteria -- Lyngbya -- Lyngbya contorta
Аннотация: The paper summarises the results of a three-year research study (European Union Grant: INTAS 97-0519) aimed at investigating the planktonic populations and trophic organization of the Lake Shira ecosystem - a saline lake in Khakasia, Siberia. The lake exhibits a stable summer-autumn stratification of the chemical-biological components. The mechanisms responsible for the 'blooming' of phytoplankton in the deeper layers were investigated in greater detail, using data from both field and laboratory experiments. The spectra of nutrition were examined to estimate the relationships between the specific growth rates of the hydrobionts and the influence of the limiting factors: light, nutrients. The observed heterotrophic capability of a metalimnetic phytoplankton population might help explain the development in the deeper waters of Lyngbya contorta. The scheme of trophic interactions was put up, based on the assessment of the carbon pools and carbon flows in the pelagic zone of the lake. A mathematical model of the vertical structure of the lake's plankton populations was constructed, using the ecosystem description and data of vertical turbulent diffusion. The role of light and nutrient limitations and grazing mortality in forming the vertical inhomogeneities, particularly in lowering the depth of the maximal cyanobacterial biomass, has been demonstrated. The theoretical curves for the stratification of chemical and biological parameters have been brought in conformity with the field observations, e.g. for the different patterns of the peaks, and for the biomass maxima of cyanobacteria, purple and green sulphur bacteria, oxygen, and hydrogen sulphide. The calculations revealed that for an adequate assessment of the parameters for the hydrogen sulphide zone it is necessary to introduce flows of allochthonous organic matter. Based on the form of the sulphur distribution curve, the allochthonous input of organic matter and the inflow of hydrogen sulphide from the bottom have been theoretically discriminated for the first time. It has also been ascertained that irrespective of the depth the allochthonous substances limiting bacterial growth, the bacteria are uniformly distributed over depth and can serve as an indicator of the presence of limitation (the effect of autostabilisation in space). Of indisputable interest to limnology are the specific methods developed for understanding the functioning of Lake Shira ecosystem. These include the autostabilisation of the limiting factors, the on-the-spot fluorescent method of determining the three classes of microalgae, the algal mixotrophy and the planktonic population interactions and feedbacks, and development of a more sensitive, bioluminescent method for mapping the nonhomogeneities. Owing to a balanced combination of classical approaches (field observations, in situ data on production-decomposition) and the more recent ones (satellite monitoring, biophysical methods of estimating interactions of populations, mathematical models based on the field and experimental data), many of the structural-function relationships in the ecosystem can now be explained, and the models can provide 'mutual control and mutual agreement' between the data collected using different approaches.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, 660036 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Degermendzhy, A.G.; Gulati, R.D.

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11.

Results of biomedical investigations of PHB and PHB/PHV fibers / T. Volova [et al.] // Biochemical Engineering Journal. - 2003. - Vol. 16, Is. 2. - P125-133, DOI 10.1016/S1369-703X(03)00038-X . - ISSN 1369-703X
Кл.слова (ненормированные):
Biocompatibility -- Fibers -- Implants -- Poly-3-hydroxybutyrate (PHB) -- Poly-3-hydroxybutyrate-co-poly-3-hydroxyvalerate (PHB/PHV) -- Polyhydroxyalkanoates (PHAs) -- Tissue reaction -- Bacteriology -- Calcification (biochemistry) -- Copolymers -- Flammability -- Tissue -- Tissue response -- Biomedical engineering -- acid phosphatase -- poly(3 hydroxybutyric acid) -- poly(3 hydroxybutyric acid) co poly(3 hydroxyvaleric acid) -- polyhydroxyalkanoic acid -- suture material -- unclassified drug -- animal experiment -- article -- bacterial metabolism -- biochemistry -- biocompatibility -- biomedicine -- calcification -- catgut -- correlation analysis -- dose time effect relation -- enzyme activity -- fascia -- fiber -- foreign body -- functional assessment -- giant cell -- implantation -- in vivo study -- inflammation -- intermethod comparison -- macrophage -- materials testing -- multinuclear cell -- muscle injury -- necrosis -- nonhuman -- parameter -- phagocytosis -- physiology -- postoperative period -- priority journal -- process monitoring -- ralstonia eutropha b 5786 -- scar formation -- silk -- strength -- suture -- synthesis -- tissue reaction -- Wautersia eutropha -- wound healing -- Animalia -- Ralstonia -- Wautersia eutropha
Аннотация: The paper presents the results of biomedical investigations of sutures made of polyhydroxyalkanoates (PHAs) of two types (poly-3-hydroxybutyrate (PHB) and poly-3-hydroxybutyrate-co-poly-3-hydroxyvalerate (PHB/PHV)), synthesized by the bacteria Ralstonia eutropha B 5786 in the experiment on test animals in vivo, in comparison with silk and catgut sutures. PHB and PHB/PHV (PHBV) implants produced no adverse effect on physiological, biochemical and functional parameters of the animals during the post-surgery period. The tested PHA sutures featured the necessary strength throughout the healing period of the muscle-fascial cuts. The reaction of tissues to the implantation of PHB and PHB/PHV fibers fitted into the usual scheme characteristic of the wound process and of the reaction to a foreign-body invasion. This reaction and the reaction of tissues to silk had the similar nature and period of inflammation, but it was much less pronounced than the reaction to catgut. The tissue response to the implantation of PHAs consisted in a short-duration (up to 2 weeks) post-traumatic inflammation and the formation of a fibrous capsule less than 200 ?m thick during weeks 4-8, which in 4-6 months was reduced to 40-60 ?m in the course of reverse development. There were no adverse changes, such as suppurative inflammation, necrosis, calcification, and malignization of the cicatrice, at the site of implantation of PHA filaments, unlike in the cases with silk and catgut. In the case of PHA implantation there was a typical prolonged (throughout the post-surgery monitoring period) pronounced macrophagal stage with a large number of macrophages present. The macrophages were of the phagocytic type and multinucleate giant foreign cells, with a high activity of acid phosphomonoesterase that correlated with the activity of the enzyme in blood. Throughout the period of monitoring no differences in the tissue response to the implantation of the polymer filaments of two PHA types were recorded. В© 2003 Elsevier Science B.V. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 60036, Russian Federation
Inst. Transplantology Artif. Organs, Russian Ministry of Health, Shchukinskaya 1, 123182 Moscow, Russian Federation
Terr. Pathological Anatomy Bureau, Partisan Zheleznyak St. 1, Krasnoyarsk 660049, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.; Shishatskaya, E.; Sevastianov, V.; Efremov, S.; Mogilnaya, O.

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12.

Tritium in surface waters of the Yenisei River basin / A. Y. Bolsunovsky, L. G. Bondareva // Journal of Environmental Radioactivity. - 2003. - Vol. 66, Is. 3. - P285-294, DOI 10.1016/S0265-931X(02)00132-7 . - ISSN 0265-931X
Кл.слова (ненормированные):
Deep-well injection of radionuclides -- Nuclear reactor -- Surface and ground waters -- Tritium -- Yenisei River basin -- Cooling water -- Nuclear reactors -- Sediments -- Surface waters -- River basins -- Tritium -- carbon 14 -- surface water -- tritium -- groundwater -- nuclear power plant -- radioactive pollution -- surface water -- tritium -- article -- catchment -- measurement -- radioactive contamination -- river -- sediment -- Environmental Monitoring -- Geologic Sediments -- Mining -- Power Plants -- Reference Values -- Russia -- Tritium -- Water Pollutants, Radioactive -- Russian Federation -- Tritium
Аннотация: This paper reports an investigation of the tritium content in the surface waters of the Yenisei River basin near the Mining and Chemical Combine (MCC). In 2001 the maximum tritium concentration in the Yenisei River did not exceed 4 В± 1 Bq l-1, which is consistent with the data of 1998-99. However, it has been found that there are surface waters containing enhanced tritium as compared with the background values for the Yenisei River. For instance, in the Ploskii Stream and the Shumikha River the maximum tritium concentrations amount to 168 and 81 Bq l-1, respectively. The source of tritium in these surface waters is the last operating reactor at the MCC, which still uses the Yenisei water as coolant. In water and sediment samples of the Bolshaya Tel River (a tributary of the Yenisei River) the tritium content turned out to be at least 10 times higher than the background values for the Yenisei River. The measurements conducted at the RPA RADON (Moscow) revealed not only tritium but also the artificial radionuclide 14C in the Bolshaya Tel samples. The data obtained suggest that the Bolshaya Tel River receives the major part of tritium from sediments rather than from the water catchment area. This allows the conclusion that there is water exchange between the surface waters and the radioactively contaminated underground horizons of the "Severny" testing site. В© 2002 Elsevier Science Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics SB RAS, Akademgorodok, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovsky, A.Y.; Bondareva, L.G.

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13.

Radioactive contamination of aquatic organisms of the Yenisei river in the area affected by the activity of the mining-and-chemical combine / A. Ya. Bolsunovskij, A. G. Sukovatyj // Radiatsionnaya Biologiya. Radioekologiya. - 2004. - Vol. 44, Is. 3. - С. 361-366 . - ISSN 0869-8031
Кл.слова (ненормированные):
Dosimetry -- Environmental impact -- Radioactivity -- River pollution -- Water analysis -- Aquatic organisms -- Diatoms -- Exposure dose rate -- Fontinalis antipyretica -- Phylolimnogammarus viridis -- The Enisei River -- Radioisotopes -- Animalia -- Bacillariophyta -- Bryophyta -- Fontinalis -- Fontinalis antipyretica -- fresh water -- radioisotope -- animal -- article -- chemical industry -- Crustacea -- diatom -- environmental monitoring -- industrial waste -- methodology -- mining -- plant -- radiation exposure -- radiation response -- Russian Federation -- water pollutant -- water pollution -- Animals -- Chemical Industry -- Crustacea -- Diatoms -- Dose-Response Relationship, Radiation -- Environmental Monitoring -- Fresh Water -- Industrial Waste -- Mining -- Plants -- Radioisotopes -- Siberia -- Water Pollutants, Radioactive -- Water Pollution
Аннотация: The study was done to investigate the content of manmade radionuclides in aquatic organisms of the Yenisei River near the Mining-and-Chemical Combine (MCC) and to estimate the exposure dose rates to organisms from various sources. The results of the investigation and calculations suggest that the main source of radioactive contamination of aquatic organisms is the coolant of the third MCC reactor, which is still being released into the Yenisei. Gamma-spectrometric analysis revealed 23 manmade radionuclides in the biomass of aquatic plants. The aquatic animal Phylolimnogammarus viridis and diatoms also contain manmade radionuclides. Among aquatic organisms, the highest dose rate is received by aquatic plants (up to 39 ?Gy/day). For most aquatic organisms under study, the dose received from the technogenic irradiation is an order of magnitude higher than the dose received from natural irradiation. The water moss (Fontinalis antipyretica) features the highest capacity to accumulate manmade radionuclides; hence, it accumulates the largest technogenic exposure dose among the study aquatic organisms.

Scopus
Держатели документа:
Inst. of Biophysics, Sib. Div. of RAS, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Bolsunovskij, A.Ya.; Sukovatyj, A.G.

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14.

Effect of Water Temperature on the Content of Essential Polyunsaturated Fatty Acids in Freshwater Zooplankton / M. I. Gladyshev [et al.] // Doklady Biochemistry and Biophysics. - 2011. - Vol. 437, Is. 1. - P57-59, DOI 10.1134/S1607672911020013 . - ISSN 1607-6729
Кл.слова (ненормированные):
docosahexaenoic acid -- fresh water -- icosapentaenoic acid -- unsaturated fatty acid -- water -- animal -- article -- chemistry -- copepod -- environmental monitoring -- metabolism -- temperature -- zooplankton -- Animals -- Copepoda -- Docosahexaenoic Acids -- Eicosapentaenoic Acid -- Environmental Monitoring -- Fatty Acids, Unsaturated -- Fresh Water -- Temperature -- Water -- Zooplankton

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Scientific-Production Center of the National Academy of Sciences of Belarus for Bioresources, Minsk, Belarus
Institute of Biology of Komi Scientific Center, Ural Branch, Russian Academy of Sciences, Syktyvkar 167000, Russian Federation
Siberian Federal University, Krasnoyarsk 660041, Russian Federation
Kamchatka Research Institute of Fisheries and Oceanography, Naberezhnaya 18, Petropavlovsk-Kamchatskii 683602, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Semenchenko, V.P.; Dubovskaya, O.P.; Fefilova, E.B.; Makhutova, O.N.; Buseva, Z.F.; Sushchik, N.N.; Baturina, M.A.; Razlutskij, V.I.; Lepskaya, E.V.; Kalacheva, G.S.

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15.

Benefit-risk ratio of food fish intake as the source of essential fatty acids vs. heavy metals: A case study of Siberian grayling from the Yenisei River / M. I. Gladyshev [et al.] // Food Chemistry. - 2009. - Vol. 115, Is. 2. - P545-550, DOI 10.1016/j.foodchem.2008.12.062 . - ISSN 0308-8146
Кл.слова (ненормированные):
Benefit-risk ratio -- Essential fatty acids -- Grayling -- Hazard quotient -- Heavy metals
Аннотация: A formula was derived for quantification of benefit-risk ratio (hazard quotient) for the intake of a product containing essential polyunsaturated fatty acids vs. heavy metals. The quotient was used in a three year case study of the contents of essential fatty acids and heavy metals in Siberian grayling, the main food fish from the middle section of the Yenisei River. As found, in general the fish intake was potentially very beneficial for human health, except on a few occasions, when the risk overweighed the benefit because of high contents of chromium in the fish muscle tissue. The data demonstrated the necessity for regular monitoring of the hazard quotients for food fish in wild conditions, based at least on monthly sampling frequency. В© 2008 Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, 660041, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Anishchenko, O.V.; Makhutova, O.N.; Kalachova, G.S.; Gribovskaya, I.V.

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16.

Content of metals in compartments of ecosystem of a Siberian pond / M. I. Gladyshev [et al.] // Archives of Environmental Contamination and Toxicology. - 2001. - Vol. 41, Is. 2. - P157-162, DOI 10.1007/s002440010233 . - ISSN 0090-4341
Кл.слова (ненормированные):
aluminum -- cadmium -- calcium -- chromium -- copper -- heavy metal -- iron -- lead -- magnesium -- manganese -- nickel -- potassium -- sodium -- zinc -- aquatic ecosystem -- biological uptake -- heavy metal -- pond -- article -- bioaccumulation -- ecosystem -- fish -- nonhuman -- pond -- priority journal -- Russian Federation -- sediment -- soil pollution -- water contamination -- Animals -- Ecosystem -- Environmental Monitoring -- Fishes -- Geologic Sediments -- Invertebrates -- Metals, Heavy -- Plants -- Water Pollutants -- Russian Federation
Аннотация: During three field seasons (June-September) of 1997-99 contents of Na, K, Ca, Mg, Fe, Mn, Zn, Cu, Al, Cr, Ni, Cd, and Pb were determined in compartments of ecosystem (surrounding soils, bottom sediments, water, zoobenthos, macrophytes, and fish) of a fish and recreation pond situated at the edge of Krasnoyarsk City (Siberia, Russia). Contents of most parts of metals in soils, water, and macrophytes significantly correlated with each other. As concluded, their contents were determined by natural, general, geochemical peculiarities of the region. Heavy metals, contents of which were higher than federal upper limits of concentration, were revealed. In muscles of fish with different feeding spectra - crucian and perch - concentrations of some metals differed significantly; correlation graphs for metals also had different structures. Comparison of our data with those on diverse aquatic ecosystems of Siberia, Europe, North America, and China published in the last decade was carried out. It was concluded that a distribution of heavy metals in the compartments of an aquatic ecosystem presently have to be determined for each particular water body until general regularities are discovered.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Agricultural University, Mira av., 88, Krasnoyarsk, 660049, Russian Federation
Krasnoyarsk State University, Svobodny av., 79, Krasnoyarsk, 660042, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Gribovskaya, I.V.; Moskvicheva, A.V.; Muchkina, E.Y.; Chuprov, S.M.; Ivanova, E.A.

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17.

The use of bioluminescent biotests for study of natural and laboratory aquatic ecosystems / V. A. Kratasyuk [et al.] // Chemosphere. - 2001. - Vol. 42, Is. 8. - P909-915, DOI 10.1016/S0045-6535(00)00177-6 . - ISSN 0045-6535
Кл.слова (ненормированные):
Alcohol dehydrogenase -- Bacterial luciferase -- Bioluminescence -- Blooming -- Pollution -- Trypsin -- Water toxicity -- alcohol dehydrogenase -- benzoquinone -- luciferase -- trypsin -- aquatic ecosystem -- bioluminescence -- water quality -- article -- bacterium culture -- bioluminescence -- blue green alga -- ecosystem -- pond -- seasonal variation -- water pollution -- water quality -- Benzoquinones -- Biological Assay -- Cyanobacteria -- Ecosystem -- Environmental Monitoring -- Eutrophication -- FMN Reductase -- Indicators and Reagents -- Luminescent Measurements -- NADH, NADPH Oxidoreductases -- Water Pollutants -- Russian Federation -- algae -- Bacteria (microorganisms) -- Chlorophyta -- Cyanobacteria -- uncultured cyanobacterium
Аннотация: A set of bioluminescent tests was developed to monitor water quality in natural and laboratory ecosystems. It consisted of four bioluminescent systems: luminous bacteria, coupled enzyme system NADH:FMN-oxidoreductase-luciferase and triplet enzyme systems with alcohol dehydrogenase and trypsin. The set of biotests was applied for a small forest pond (Siberia, Russia), laboratory microecosystems polluted with benzoquinone and a batch culture of blue-green algae. Thereby effects of natural water compared to those of models of heavy pollution and "bloom" of blue-greens on the bioluminescent tests were revealed. The set of biotests was not affected by a natural seasonal variability of water quality in the unpolluted pond, but responded to the heavy pollution and the "bloom" of blue-greens. The set of biotests could be recommended as the alarm test to control the acute toxicity of natural water bodies. В© 2001 Elsevier Science Ltd.

Scopus
Держатели документа:
Krasnoyarsk State University, pr. Svobodnii 79, Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Krasnoyarsk State Agricultural University, Mira av., 88, Krasnoyarsk, 660049, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kratasyuk, V.A.; Esimbekova, E.N.; Gladyshev, M.I.; Khromichek, E.B.; Kuznetsov, A.M.; Ivanova, E.A.

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18.

Mathematical model of seasonal agrophytocenosis productivity based on terrestrial and satellite monitoring / T. I. Pisman [et al.] // Doklady Biological Sciences. - 2009. - Vol. 428, Is. 1. - P467-470, DOI 10.1134/S0012496609050226 . - ISSN 0012-4966
Кл.слова (ненормированные):
agriculture -- algorithm -- article -- biological model -- biomass -- computer simulation -- crop -- growth, development and aging -- methodology -- season -- space flight -- wheat -- Agriculture -- Algorithms -- Biomass -- Computer Simulation -- Crops, Agricultural -- Models, Biological -- Seasons -- Spacecraft -- Triticum

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50.50, Krasnoyarsk 660036, Russian Federation
Institute of Natural Sciences and Mathematics, Khakass State University, pr. Lenina 90, Abakan, 655000 Khakassia, Russian Federation
Institute of Space and Information Technologies, Siberian Federal University, ul. Kirenskogo 26, Krasnoyarsk 660074, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Pisman, T.I.; Pugacheva, I.Y.; Jukova, E.Y.; Shevyrnogov, A.P.

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19.

Remote diagnostics of vegetation covers by spectral brightness of plants / A. P. Shevyrnogov, A. F. Sidko // Advances in Space Research. - 1995. - Vol. 16, Is. 10. - P185-188 . - ISSN 0273-1177
Кл.слова (ненормированные):
plant -- spectral brightness -- vegetation
Аннотация: Optical remote methods are able to solve numerous scientific and practical problems associated with development of ecological monitoring systems, monitoring of plant cenoses' condition, forests and agricultural crops, in particular. Investigation of vegetation covers (VC) by optical remote methods is based on comprehensive examination and analysis of interaction mechanisms of incident and reflected solar light with plants, their dependence on geometric and pigment structure. В© 1995.

Scopus
Держатели документа:
Institute of Biophysics (Russian Academy of Sciences, Siberian Branch), Academgorodok, 660036 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.P.; Sidko, A.F.

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20.

Observed trends of chlorophyll concentration in the surface layer of the northern and central Atlantic (1979-1983) / A. P. Shevyrnogov, G. S. Vysotskaya // Advances in Space Research. - 1998. - Vol. 22, Is. 5. - P701-704, DOI 10.1016/S0273-1177(97)01136-8 . - ISSN 0273-1177
Кл.слова (ненормированные):
chlorophyll -- primary production -- remote sensing -- Atlantic Ocean
Аннотация: To preserve and utilize the biosphere it is imperative that we understand the long-term dynamics of the primary production process on our planet. Variability of chlorophyll concentration in the ocean is one of the most important components of this process. However, size and access make its investigation labour-intensive. Dependence of primary production on high variability of hydrophysical phenomena in the ocean (fluctuations of currents, frontal zones, etc.) makes it difficult to locate points to measure chlorophyll concentration dynamics. To locate such quasistationary zones with respect to seasonal dynamics of chlorophyll concentration by satellite data the Institute of Biophysics (Russian Academy of Sciences, Siberian Branch) has developed a geoinformation system. Its use made it possible to locate such zones over the entire ocean. The work shows zones on the Central and Northern Atlantic. They form the ground to analyse perennial dynamics of chlorophyll concentration. The quasistationary zones are proposed for systematic monitoring of phytopigment concentration by space-borne and marine craft.

Scopus
Держатели документа:
Institue of Biophysics, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation
Computer Center, Siberian Branch, Russian Academy of Sciences, Academgorodok 660036, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shevyrnogov, A.P.; Vysotskaya, G.S.

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