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A comparative study of biota and sediments as monitors of plutonium in the Yenisei River (Siberia, Russia) / T. A. Zotina, M. S. Melgunov, D. V. Dementyev [et al.] // J. Environ. Radioact. - 2021. - Vol. 237. - Ст. 106723, DOI 10.1016/j.jenvrad.2021.106723. - Cited References:50. - The authors are grateful to the staff of the Radioecology Laboratory (Institute of Biophysics SB RAS, Krasnoyarsk) and the head of the Laboratory, Dr. Alexander Bolsunovsky, for their help in sample collection and processing, to Irina Makarova (Institute of Geology and Mineralogy SB RAS, Novosibirsk) for radiochemical separation of plutonium, and to Elena Krasova for linguistic check and improvements. We also appreciate comments of anonymous reviewers, which allowed us to improve our manuscript. The research was supported by the grants of Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, and Krasnoyarsk Regional Scientific Foundation No. 20-44-240004 and 18-44-240003, and the State Assignment for Fundamental Research to IBP SB RAS and IGM SB RAS. . - ISSN 0265-931X. - ISSN 1879-1700

РУБ Environmental Sciences
Рубрики:
PU-240/PU-239 ATOM RATIO
ARTIFICIAL RADIONUCLIDES
WATER
Кл.слова (ненормированные):
Americium -- Cesium -- Submerged macrophyte -- Zoobenthos
Аннотация: MOX-fuel production and spent nuclear fuel reprocessing started recently at the Mining-and-Chemical Combine (MCC, Zheleznogorsk, Russia) have caused an increase in controlled releases of plutonium to the Yenisei River. In this study, we analyzed time-dependent trends of plutonium (239,240Pu and 238Pu) in biota and bottom sediments of the Yenisei during 2008-2019, to estimate comparatively the potential of abundant representatives of biota as bio-monitors of contamination of the Yenisei by plutonium. Gamma-emitting radionuclides (40 K; 60Co; 137Cs; 152Eu; 241Am) were measured in environmental samples of the Yenisei as well. Samples of bottom sediments, water moss (Fontinalis antipyretica), shining pondweed (Potamogeton lucens), caddisfly larvae with casings (Apatania crymophila), and amphipods (Eulimnogammarus viridis and Palaseopsis cancelloides) were collected downstream and upstream of the radioactive discharge site. Environmental samples of the Yenisei collected downstream of the radioactive discharge site differed considerably in activity concentrations of plutonium but were similar in time-dependent trends of plutonium, reflecting the trends of annual discharges of plutonium. In 2018, the year of a sharp increase in controlled discharge of plutonium, the concentration of 239,240Pu in water moss (26 Bq kg-1 d.w.) was higher than in sediments (14 Bq kg-1 d.w.). In other years, the highest activity concentration of 2391,240Pu was observed in bottom sediments. In view of the higher magnitude of increase in plutonium concentration, water moss and shining pondweed can be considered as more sensitive indicators of increased fresh releases of plutonium than bottom sediments. Taking into account the food-related mechanism of plutonium uptake by amphipods, this representative of biota can be regarded as a sensitive monitor of bioavailable plutonium in the Yenisei.

WOS
Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys,Fed Res Ctr, 50-50 Akademgorodok, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, 79 Svobodny Av, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Inst Geol & Mineral, 3 Academician Koptyug Av, Novosibirsk 630090, Russia.

Доп.точки доступа:
Zotina, Tatiana A.; Melgunov, Michail S.; Dementyev, D. V.; Miroshnichenko, L. V.; Alexandrova, Y. V.; Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory; Krasnoyarsk Regional Scientific Foundation [20-44-240004, 18-44-240003]; State Assignment for Fundamental Research

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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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Accumulation and release of 99Tc by a macrophyte of the Yenisei River (Elodea canadensis) in laboratory experiments / A. Bolsunovsky, L. Bondareva // Journal of Radioanalytical and Nuclear Chemistry. - 2008. - Vol. 277, Is. 3. - P631-636, DOI 10.1007/s10967-007-7148-5 . - ISSN 0236-5731
Кл.слова (ненормированные):
technetium 99m -- aquatic flora -- article -- biomass -- controlled study -- dry weight -- liquid scintillation counting -- macrophyte -- nonhuman -- radiation absorption -- radiation detection -- radiation dose fractionation -- radiation measurement -- radioactivity -- river -- water sampling
Аннотация: The study addresses 99Tc accumulation and release by Elodea canadensis, one of the abundant species of submerged plants in the Yenisei River. 99Tc in water samples of the "Elodea - Yenisei River water" model system and in the biomass fractions was measured using a liquid scintillation analyzer. Experiments on accumulation of 99Tc by Elodea showed that 99Tc activity concentration can reach 120В±6 Bq/g dry wt, with the concentration factor for 99Tc 2700В±500 l/kg dry wt. In experiments on 99Tc release, over 504 hours about 82% of the total 99Tc activity was released into the water from the plant; most of 99Tc was released within the first 192 hours. The data obtained using sequential chemical fractionation of biomass confirmed the experimental data on 99Tc release, which suggested that most of the biomass-bound 99Tc was adsorbed on the surface of Elodea. 99Tc tightly bound to biomass (fractions of organics and mineral residue) constituted just 17% of the total 99Tc activity. В© 2008 Akademiai Kiado, Budapest.

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

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

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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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An estimate of 241Am accumulation by the macrophyte Elodea Canadensis / A. Ya. Bolsunovskij [и др.] // Doklady Akademii Nauk. - 2004. - Vol. 399, Is. 1. - С. 130-133 . - ISSN 0869-5652
Кл.слова (ненормированные):
Biomass -- Fractionation -- Minerals -- Organic compounds -- Plants (botany) -- Radioactivity -- Radioisotopes -- Accumulation -- Macrophytes -- Americium
Аннотация: The lab experiments showed that specific activity of 241Am achieves 3280В±240 Bc/g with 241Am accumulation coefficient = 16600В±2200 l/kg. The chemical fractionation results confirmed that 241Am can be strongly fixed by elodea biomass. At the end of long-term experiment the part of 241Am strongly bonded by the biomass reached 27% of total 241Am content in biomass. The accumulation process proceeds with 241Am redistribution towards decreasing of the part of exchange and adsorbed fractions and increasing of the part of organic and mineral fractions. Thus, the 241Am part in organic fractions doubled during the experiment and in mineral fraction - grew more than 10 times as compared with initial 241Am distribution.

Scopus
Держатели документа:
Inst. Biofiziki SO RAN, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

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

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Bioavailability of 99Tc to a macrophyte of the Yenisei River / L. Bondareva, A. Bolsunovsky // Radioprotection. - 2009. - Vol. 44, Is. 5. - P71-76, DOI 10.1051/radiopro/20095019 . - ISSN 0033-8451
Аннотация: The experiments on accumulation of 99Tc by Elodea biomass showed that 99Tc activity concentration can reach 120 В± 6Bq/g, with the concentration factor for 99Tc 2700 В± 500 L/kg. In experiments on 99Tc release, over 504 h about 82% of the total 99Tc activity was released into the water from plant biomass; most of 99Tc was released within the first 192 h. Results of chemical fractionation of the biomass show that 99Tc contained in biomass was mainly concentrated in the exchangeable and the adsorbed fractions (83%). Thus, the data obtained using chemical fractionation of biomass confirmed the experimental data on 99Tc release, which suggested that most of the biomass-bound 99Tc was adsorbed on the biomass surface. 99Tc tightly bound to Elodea biomass (fractions of organics and mineral residue) constituted just 17% of the total 99Tc activity. Decreased illumination of Elodea shoots during the experiment did not cause any reduction in 99Tc activity concentration or concentration factor. Results of chemical fractionation of the biomass grown under lower illumination conditions show that the percentage of 99Tc tightly bound to Elodea biomass (fractions of organics and mineral residue) decreased while the 99Tc of the adsorbed fractions decreased. Our results and data reported by other authors suggest that some part of 99Tc activity can be bioavailable to living organisms and that the portion of bioavailable 99Tc can be determined by a number of factors. В© 2009 EDP Sciences.

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

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

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Biochemical fractionation and cellular distribution of americium and plutonium in the biomass of freshwater macrophytes / T. A. Zotina, G. S. Kalacheva, A. Y. Bolsunovsky // Journal of Radioanalytical and Nuclear Chemistry. - 2011. - Vol. 290, Is. 2. - P447-451, DOI 10.1007/s10967-011-1228-2 . - ISSN 0236-5731
Кл.слова (ненормированные):
238, 242Pu -- 241Am -- Carbohydrates -- Cellulose -- Fractionation -- Protein -- Submerged macrophyte -- americium 241 -- plutonium -- plutonium 238 -- plutonium 242 -- polysaccharide -- unclassified drug -- article -- bioaccumulation -- biomass -- cellular distribution -- Ceratophyllum demersum -- controlled study -- cytosol -- Elodea canadensis -- Fontinalis antipyretica -- fractionation -- freshwater species -- macrophyte -- moss -- Myriophyllum spicatum -- nonhuman -- plant cell -- radiation absorption -- radioactivity -- shoot
Аннотация: Accumulation of americium ( 241Am) and plutonium ( 238,242Pu) and their distribution in cell compartments and biochemical components of the biomass of freshwater aquatic plants Elodea canadensis, Ceratophyllum demersum and Myrioplyllum spicatum and aquatic moss Fontinalis antipyretica have been investigated in laboratory experiments. Americium and plutonium taken up from water by Elodea canadensis apical shoots were mainly absorbed by structural components of plant cells (90% for 241Am; 89% for 238Pu and 82-87% for 242Pu). About 10-18% of isotope activity was recorded in the cytosol fraction. The major concentration (76-92%) of americium was bound to cell wall cellulose-like polysaccharides of Elodea canadensis, Myriophyllum spicatum, Ceratophyllum demersum and Fontinalis antipyretica, 8-24% of americium activity was registered in the fraction of proteins and carbohydrates, and just a minor concentration (<1%) in the lipid fraction. The distribution of plutonium in the biomass fractions of Elodea was similar to that of americium. Hence, americium and plutonium had the highest affinity to cellulose-like polysaccharides of cell walls of freshwater submerged macrophytes. В© 2011 Akademiai Kiado, Budapest, Hungary.

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

Доп.точки доступа:
Zotina, T.A.; Kalacheva, G.S.; Bolsunovsky, A.Y.

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Chromosomal abnormalities in roots of aquatic plant Elodea canadensis as a tool for testing genotoxicity of bottom sediments / T. Zotina [et al.] // Ecotoxicol. Environ. Saf. - 2015. - Vol. 122. - P384-391, DOI 10.1016/j.ecoenv.2015.08.021 . - ISSN 0147-6513
Кл.слова (ненормированные):
Anaphase-telophase -- Chromosome damage -- Heavy metals -- Macrophyte -- Radionuclides -- Sediment-contact tests -- Elodea canadensis
Аннотация: Submersed freshwater macrophytes are considered as relevant indicators for use in bulk bottom sediment contact tests. The purpose of this study was to estimate the validity of endpoints of aquatic plant Elodea canadensis for laboratory genotoxicity testing of natural bottom sediments. The inherent level of chromosome abnormalities (on artificial sediments) in roots of E. canadensis under laboratory conditions was lower than the percentage of abnormal cells in bulk sediments from the Yenisei River. The percentage of abnormal cells in roots of E. canadensis was more sensitive to the presence of genotoxic agents in laboratory contact tests than in the natural population of the plant. The spectra of chromosomal abnormalities that occur in roots of E. canadensis under natural conditions in the Yenisei River and in laboratory contact tests on the bulk bottom sediments from the Yenisei River were similar. Hence, chromosome abnormalities in roots of E. canadensis can be used as a relevant and sensitive genotoxicity endpoint in bottom sediment-contact tests. © 2015 Elsevier Inc.

Scopus,
WOS
Держатели документа:
Institute of Biophysics SB RAS, 50/50 Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Zotina, T.; Medvedeva, M.; Trofimova, E.; Alexandrova, Y.; Dementyev, D.; Bolsunovsky, A.

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Contribution of different groups of autotrophs to the primary production of the mountain Lake Oiskoe [Text] / E. A. Ivanova [et al.] // Contemp. Probl. Ecol. - 2014. - Vol. 7, Is. 4. - P397-409, DOI 10.1134/S1995425514040040. - Cited References: 49. - This work was supported by the Federal Target Program "Scientific and Scientific-Pedagogical Personnel for an Innovative Russia," state contract no. 16.740.11.0484, and the project of the Ministry of Education and Science of the Russian Federation "Ecological and Biochemical Laws of Matter and Energy Transfer in Food Webs of Aquatic Ecosystems." . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
DCMU-FLUORESCENCE METHOD
   PHYTOPLANKTON
   CHLOROPHYLL
   PERIPHYTON
   RANGE
Кл.слова (ненормированные):
primary productivity -- phytoplankton -- phytoperiphyton -- macrophytes -- fluorescence -- chlorophyll -- Lake Oiskoe
Аннотация: Productivity characteristics of phytoplankton, phytoperiphyton, and five species of macrophytes in the mountain oligotrophic Lake Oiskoe (Ergaky Mountain Range, West Sayan) have been studied. High primary productivity has been noted for phytoperiphyton and macrophyte communities. Photosynthetic parameters of the macrophyte leaves have been compared using a PAM fluorimeter.

WOS
Держатели документа:
[Ivanova, E. A.
Anishchenko, O. V.
Glushchenko, L. A.
Gaevsky, N. A.
Kolmakov, V. I.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Ivanova, E. A.
Anishchenko, O. V.
Kolmakov, V. I.] Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Ivanova, E.A.; Anishchenko, O.V.; Glushchenko, L.A.; Gaevsky, N.A.; Kolmakov, V.I.; Federal Target Program "Scientific and Scientific-Pedagogical Personnel for an Innovative Russia" [16.740.11.0484]; Ministry of Education and Science of the Russian Federation

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10.

Estimation of transfer of technogenic radionuclides in food chains of the Yenisei river / E. A. Trofimova, T. A. Zotina, A. Y. Bolsunovskii // Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - P365-370, DOI 10.1134/S1995425512040142 . - ISSN 1995-4255
Кл.слова (ненормированные):
burbot -- dace -- grayling -- pike -- water moss -- zoobenthos -- bioaccumulation -- food chain -- gadoid -- gamma ray radiation -- macrophyte -- moss -- radioactive pollution -- radionuclide -- salmonid -- trophic level -- zoobenthos -- Russian Federation -- Yenisei River -- Bryophyta -- Esocidae -- Lota
Аннотация: The efficiency of the transfer of gamma-emitting radionuclides in food chains, including macrophytes, zoobenthos, and bentho- and ichthyophagist fish, was estimated in the radiation-polluted region of the Yenisei river. Significant differences in the efficiency of the transfer of natural and technogenic radionuclides between components of different trophic levels were revealed. Substantial species-related differences in the accumulation of radionuclides in ichthyophagist fish from food were revealed. В© 2012 Pleiades Publishing, Ltd.

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

Доп.точки доступа:
Trofimova, E.A.; Zotina, T.A.; Bolsunovskii, A.Y.

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11.

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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12.

Potential effect of macrophyte beds on number of akinetes of blue-green algae in littoral of a body of water / E. S. Kravchuk, T. V. Anisimova // Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - P430-433, DOI 10.1134/S1995425512040087 . - ISSN 1995-4255
Кл.слова (ненормированные):
akinetes -- blue-green algae -- bottom sediments -- resting stages -- water bloom -- algal bloom -- cyanobacterium -- lacustrine deposit -- littoral environment -- macrophyte -- reservoir -- Siberia -- Chlorophyta
Аннотация: The distribution of the resting stages of blue-green algae (akinetes) in bottom sediments of the littoral of a small Siberian water reservoir has been studied. The irregularity (mosaicism) of the distribution of akinetes in the bottom sediments of the littoral has been demonstrated and the possible mechanisms of its formation have been analyzed. В© 2012 Pleiades Publishing, Ltd.

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

Доп.точки доступа:
Kravchuk, E.S.; Anisimova, T.V.

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13.

Spatial distribution of resting stages (akinetes) of the cyanobacteria Anabaena flos-aquae in sediments and its influence on pelagic populations / E. S. Kravchuk, E. A. Ivanova, M. I. Gladyshev // Marine and Freshwater Research. - 2011. - Vol. 62, Is. 5. - P450-461, DOI 10.1071/MF10256 . - ISSN 1323-1650
Кл.слова (ненормированные):
cyanobacterial blooms -- harmful algae -- reservoir -- resting stages -- sediment management -- water quality -- abundance -- bioaccumulation -- biomass -- cyanobacterium -- environmental factor -- experimental study -- green alga -- inoculation -- littoral environment -- macrophyte -- pelagic environment -- phytoplankton -- population structure -- qualitative analysis -- recruitment (population dynamics) -- reservoir -- seasonal variation -- sediment analysis -- silt -- spatial distribution -- vertical distribution -- water quality -- Siberia -- algae -- Anabaena flos-aquae -- Cyanobacteria
Аннотация: Recruitment of pelagic populations of cyanobacteria from littoral bottom sediments is assumed to be one of the key factors for the development of harmful blooms. Therefore, it is necessary to obtain more information on the possible factors influencing the spatial distribution of the resting stages in littoral bottom sediments. To test the hypothesis that akinete abundances in littoral bottom sediments are associated with silt and the presence of higher water plants, we sampled spatial and vertical distribution and seasonal dynamics of akinetes of cyanobacterium Anabaena flos-aquae in a small Siberian reservoir. We found that akinetes accumulate in silt at stations located in macrophyte beds. Two experiments were carried out to test if there is relationship between size of inoculum and size of the pelagic population of A. flos-aquae. The proportion of A. flos-aquae in total phytoplankton biomass depended on the initial abundance of akinetes in bottom sediments. The model based on laboratory experiments gave good qualitative description of the field data. These findings can be useful to predict the location of the main akinete accumulation zones in a water body and plan the removal of sediment to prevent the cyanobacterial blooms. В© CSIRO 2011.

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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:
Kravchuk, E.S.; Ivanova, E.A.; Gladyshev, M.I.

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14.

STOICHIOMETRIC COMPOSITION OF SESTON IN LITTORAL AND PELAGIAL ZONES OF SHALLOW LAKE OBSTERNO (BELARUS) / Z. F. Buseva [и др.] // Dokl. Nat. Akad. Nauk Belarusi. - 2018. - Vol. 62, Is. 3. - С. 304-310, DOI 10.29235/1561-8323-2018-62-3-304-310. - Cited References:15. - This work was partially supported by the BRFFR (grant No. (sic)17-037). We thank for the collaboration with Narach Biological Station of Belarusian State University and thank it's Director Dr. T. V. Zhukova, scientific and technological staff -E. I. Lapitskaja and E. A. Zhuravliova for their fruitfull help. . - ISSN 1561-8323. - ISSN 2524-2431

РУБ Multidisciplinary Sciences
Рубрики:
NUTRIENT LIMITATION
   PHOSPHORUS
   NITROGEN
   ZOOPLANKTON
   CARBON
   MARINE
Кл.слова (ненормированные):
seston -- carbon -- nitrogen -- phosphorus -- stoichiometry -- littoral -- pelagial -- macrophyte beds
Аннотация: We estimated the seston elemental composition (C, N, P) and its ratio in pelagic and littoral zones of mesotrophic shallow Lake Obsterno during two contrasting seasons, as well as the influence of macrophyte beds on the seston stoichiometry. In the both pelagial and littoral zones in summer the C : N ratio was small, 4.62 and 7.05 respectively. But it increased slightly during autumn to 5.66 in pelagic samples against 8.33 in littoral ones. The large N : P ratio and the small phosphorus content specially in the macrophyte covered littoral zone equal to 57.7 in July against 22.47 in September suggest a high level of phosphorus limitation in the littoral locations as a possible mediated reason suppressing zooplankton abundance in summer. Our results in the both pelagial and littoral habitat showed a highly P limited situation in which the N : P ratio was larger in littoral with macrophyte than in pelagial zones. The obtained data of littoral seston stoichiometry were recorded for the first time and exceeded the classical Redfield ratio. The elemental imbalance between macrophyte covered littoral and pelagial suggest that nutrients, especially P, are more limiting in macrophyte beds in summer due to the resource competition between phytoplankton and macrophytes for nutrients, a poor food quality, low zooplankton abundance, as well as its poor taxon-specific elemental ratio in summer.

WOS,
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Держатели документа:
Natl Acad Sci Belarus Bioresources, Sci & Pract Ctr, 27 Akad Skaya Str, Minsk 220072, BELARUS.
Naroch Biol Stn, Naroch, BELARUS.
Russian Acad Sci, Siberian Branch, Inst Biophys, 50-50 Akademgorodok Str, Krasnoyarsk 660036, Russia.
Naroch Biol Stn, Miadel Dist 220095, Minsk Region, BELARUS.

Доп.точки доступа:
Buseva, Zhanna F.; Farahani, Shabnam Bahman Gazerani; Veras, Yulia K.; Kolmakova, Anzhelika A.; Sushchik, Nadezhda N.; BRFFR [17-037]

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