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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina, Tatiana A., Melgunov, Michail S., Dementyev D. V., Miroshnichenko L. V., Alexandrova Y. V.
Заглавие : A comparative study of biota and sediments as monitors of plutonium in the Yenisei River (Siberia, Russia)
Колич.характеристики :12 с
Коллективы : 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
Место публикации : J. Environ. Radioact.: ELSEVIER SCI LTD, 2021. - Vol. 237. - Ст.106723. - ISSN 0265-931X, DOI 10.1016/j.jenvrad.2021.106723. - ISSN 1879-1700(eISSN)
Примечания : 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.
Предметные рубрики: PU-240/PU-239 ATOM RATIO
ARTIFICIAL RADIONUCLIDES
WATER
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.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bogatov V. V., Sushchik N. N., Makhutova O. N., Kolmakova A. A., Gladyshev, M., I
Заглавие : Allochthonous and Autochthonous Food Sources for Zoobenthos in a Forest Stream
Колич.характеристики :4 с
Коллективы : Basic Research Program of the Russian Federation; RF Ministry of Science and Higher Education [FWZS-2019-0020]; Siberian Federal University [FSRZ-2020-0006]
Место публикации : Russ. J. Ecol.: PLEIADES PUBLISHING INC, 2021. - Vol. 52, Is. 3. - С. 253-256. - ISSN 1067-4136, DOI 10.1134/S1067413621030048. - ISSN 1608-3334(eISSN)
Примечания : Cited References:16. - This study was supported under the Basic Research Program of the Russian Federation (theme no. 51.1.1) and State Assignments from the RF Ministry of Science and Higher Education to the Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences (no. FWZS-2019-0020) and Siberian Federal University (no. FSRZ-2020-0006).
Предметные рубрики: POLYUNSATURATED FATTY-ACIDS
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Bogatov V. V., Sushchik N. N., Makhutova O. N., Kolmakova A. A., Gladyshev M. I.
Заглавие : Allochthonous and Autochthonous Food Sources for Zoobenthos in a Forest Stream
Место публикации : Russ. J. Ecol.: Pleiades journals, 2021. - Vol. 52, Is. 3. - С. 253-256. - ISSN 10674136 (ISSN), DOI 10.1134/S1067413621030048
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kolmakova A.A., Gladyshev M.I., Kalachova G.S., Kravchuk E.S., Ivanova E.A., Sushchik N.N.
Заглавие : Amino acid composition of epilithic biofilm and benthic animals in a large Siberian river
Место публикации : Freshwater Biology. - 2013. - Vol. 58, Is. 10. - С. 2180-2195. - ISSN 00465070 (ISSN) , DOI 10.1111/fwb.12200
Ключевые слова (''Своб.индексиров.''): amino acids--epilithic microalgae and cyanobacteria--nutritive quality--river ecosystem--zoobenthos
Аннотация: We studied amino acid (AA) composition of epilithic biofilms and zoobenthos near the shore at a middle section of the Yenisei River (Siberia, Russia). We hypothesised that there was an imbalance between the composition and content of amino acids in the biofilm and its consumers, the zoobenthos, as well as between those in the zoobenthos and fish. Based on monthly sampling from 2007 to 2010, there was seasonal variation in AA profiles in the epilithic biofilms, probably caused by the succession of microalgal and cyanobacterial species. Overall, there was an imbalance in the percentage of the essential amino acids (lysine and histidine) between benthic animals and their food (the epilithic biofilm), which suggests that benthic animals may be limited by food quality. Moreover, the zoobenthos had a significantly higher content of AA, relative to carbon, than the biofilm. Based on sampling in 2012, there was an imbalance between the AA profiles of zoobenthos and that of their main consumer, the Siberian grayling (Thymallus arcticus), particularly in the percentages of two essential amino acids, lysine and leucine. In terms of overall content of essential amino acids, the nutritional value to fish of gammarids, which have recently invaded the river, was significantly lower than that of indigenous taxa, trichopteran and chironomid larvae. В© 2013 John Wiley & Sons Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T., Trofimova E., Bolsunovsky A.
Заглавие : Artificial radionuclides in fish fauna of the Yenisei River in the vicinity of the Mining-and-Chemical Combine (Siberia, Russia)
Место публикации : Radioprotection. - 2011. - Vol. 46, Is. 6 SUPPL. - С. S75-S78. - ISSN 00338451 (ISSN) , DOI 10.1051/radiopro/20116649s
Аннотация: Activities of radionuclides were measured in five species of fish (grayling, dace, crucian carp, pike, cod) sampled in the Yenisei River (Siberia, Russia) in the vicinity of the Mining-and-Chemical Combine (ROSATOM) from 2007 to 2010, with a gamma-spectrometer (Canberra, USA). The analyses of samples of organs and tissues of fish species revealed artificial (46Sc, 51Cr, 54Mn, 58,60Co, 59Fe, 65Zn, 85Sr, 99Mo, 103,106Ru, 137Cs, 141,144Ce) and natural (7Be, 40K) radionuclides in fish organs and tissues, including edible ones. The major percent (up to 80%) of 137Cs and 40K activity occurred in muscles of fish species, which also contained considerable percentages of 60Co (up to 70%) and 65Zn (up to 20%). Seasonal changes in the intake of artificial radionuclides by zoobenthos-feeding fish species (grayling and dace) were recorded and they were followed by an activity concentration increase in internal organs. The dramatic increase in radionuclide intake by grayling coincided with the change of diet source. Hence, the feeding behavior of fish can change the fluxes of artificial radionuclides in the Yenisei River. The most effective diet transfer of a radionuclide from gammarus to grayling (muscles and total body) was recorded for 40K (1.3) and much less effective for artificial nuclides. В© 2011 EDP Sciences.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T. A., Melgunov M. S., Dementyev D. V., Alexandrova Y. V.
Заглавие : Comparative Estimation of the Plutonium (238Pu, 239+240Pu) and Radiocesium (137Cs) Content in Bottom Sediments and Hydrobionts of the Yenisei River
Место публикации : Dokl. Earth Sci.: Pleiades Publishing, 2020. - Vol. 492, Is. 2. - С. 434-437. - ISSN 1028334X (ISSN), DOI 10.1134/S1028334X20060227
Аннотация: Abstract: The contents of isotopes of plutonium (238Pu and 239, 240Pu) and 137Cs in samples of bottom sediments and hydrobionts (water moss, amphipods, and caddisfly larvae with casings) taken in the Yenisei River in the vicinity of the radioactive discharge from the Mining and Chemical Combine in 2012 and 2018 were comparatively estimated. It is shown that the content and ratios between the specific activities of plutonium isotopes (238/239 and 240) in samples of BSs and hydrobionts increased after the recommencing of plutonium discharges into the Yenisei due to the beginning of MOX fuel production. The background content and the ratio between plutonium isotopes in BSs of the Yenisei were estimated for the first time. Hydrobionts and BSs were ranged differently according to the content of plutonium and 137Cs: we recorded the highest content of 137Cs in BSs and that of plutonium in water moss. The plutonium content in hydrobionts of the Yenisei River varies considerably, which permits specification of representatives of biota (water moss and caddisfly larvae with casings) that, along with BSs, can be used as effective indicators of ecosystem pollution with plutonium. © 2020, Pleiades Publishing, Ltd.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zotina T. A., Melgunov M. S., Dementyev, D., V, Alexandrova, Yu, V
Заглавие : Comparative Estimation of the Plutonium (Pu-238,Pu239+240) and Radiocesium (Cs-137) Content in Bottom Sediments and Hydrobionts of the Yenisei River
Колич.характеристики :4 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Krasnoyarsk Regional Foundation for the Support of Scientific and Technological Activities [18-44-240003]
Место публикации : Dokl. Earth Sci.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2020. - Vol. 492, Is. 2. - С. 434-437. - ISSN 1028-334X, DOI 10.1134/S1028334X20060227. - ISSN 1531-8354(eISSN)
Примечания : Cited References:13. - This work was supported by the Russian Foundation for Basic Research and the Krasnoyarsk Regional Foundation for the Support of Scientific and Technological Activities, project no. 18-44-240003, and was conducted according to a State Assignment of the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, and of the Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences.
Предметные рубрики: OB
Аннотация: The contents of isotopes of plutonium (Pu-238 and(239, 240)Pu) and(137)Cs in samples of bottom sediments and hydrobionts (water moss, amphipods, and caddisfly larvae with casings) taken in the Yenisei River in the vicinity of the radioactive discharge from the Mining and Chemical Combine in 2012 and 2018 were comparatively estimated. It is shown that the content and ratios between the specific activities of plutonium isotopes (238/239 and 240) in samples of BSs and hydrobionts increased after the recommencing of plutonium discharges into the Yenisei due to the beginning of MOX fuel production. The background content and the ratio between plutonium isotopes in BSs of the Yenisei were estimated for the first time. Hydrobionts and BSs were ranged differently according to the content of plutonium and(137)Cs: we recorded the highest content of(137)Cs in BSs and that of plutonium in water moss. The plutonium content in hydrobionts of the Yenisei River varies considerably, which permits specification of representatives of biota (water moss and caddisfly larvae with casings) that, along with BSs, can be used as effective indicators of ecosystem pollution with plutonium.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sushchik N.N., Gladyshev M.I., Kalachova G.S., Makhutova O.N., Ageev A.V.
Заглавие : Comparison of seasonal dynamics of the essential PUFA contents in benthic invertebrates and grayling Thymallus arcticus in the Yenisei river
Место публикации : Comparative Biochemistry and Physiology - B Biochemistry and Molecular Biology. - 2006. - Vol. 145, Is. 3-4. - С. 278-287. - ISSN 10964959 (ISSN) , DOI 10.1016/j.cbpb.2006.05.014
Ключевые слова (''Своб.индексиров.''): benthic invertebrates--grayling--polyunsaturated fatty acids--riverine food web--essential fatty acid--long chain fatty acid--polyunsaturated fatty acid--amphipoda--animal tissue--annelid worm--article--benthos--chironomidae--comparative study--controlled study--dominant inheritance--ecosystem--evolution--fatty acid analysis--female--fish--fly--invertebrate--larva--male--metabolic regulation--nonhuman--nutrient dynamics--priority journal--river--seasonal variation--statistical significance--thymallus arcticus--animals--fatty acids, unsaturated--food chain--gastrointestinal contents--invertebrates--muscles--rivers--russia--salmonidae--seasons--amphipoda--chironomidae--diptera--gammaridae--invertebrata--oligochaeta (metazoa)--thymallus arcticus--trichoptera
Аннотация: Seasonal dynamics of contents of essential polyunsaturated fatty acids (PUFA) in dominant groups of benthic invertebrates: gammarids (Gammaridae, Amphipoda), oligochaetes (Oligochaeta), chironomid larvae (Chironomidae, Diptera) and caddisfly larvae (Trichoptera), and dominant benthivorous fish, Siberian grayling Thymallus arcticus, have been studied in ecosystem of the large Siberian river. During the year of the study most benthic invertebrate taxa showed significant variations in the contents of both C-18 and long chain C-20-22 PUFAs. In contrast, the fish, which consumed the zoobenthos, had no significant seasonal variations in long chain PUFAs' contents. Thereby, the fish, as organisms of relatively higher evolution level than invertebrates, was supposed to have more strict metabolic control of long chain PUFAs' contents. Evidence was obtained that the studied fish species, grayling, may be capable to convert dietary EPA into DHA. В© 2006 Elsevier Inc. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Gribovskaya I.V., Moskvicheva A.V., Muchkina E.Y., Chuprov S.M., Ivanova E.A.
Заглавие : Content of metals in compartments of ecosystem of a Siberian pond
Колич.характеристики :6 с
Место публикации : Arch. Environ. Contam. Toxicol.: SPRINGER-VERLAG, 2001. - Vol. 41, Is. 2. - P157-162. - ISSN 0090-4341
Примечания : Cited References: 26
Предметные рубрики: CHIRONOMUS-RIPARIUS MEIGEN
NELSON RIVER SYSTEM
AQUATIC MACROPHYTES
LARVAE DIPTERA
HEAVY-METAL
COPPER
LEAD
SEDIMENTS
CADMIUM
MANITOBA
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.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Gribovskaya I.V., Moskvicheva A.V., Muchkina E.Y., Chuprov S.M., Ivanova E.A.
Заглавие : Content of metals in compartments of ecosystem of a Siberian pond
Место публикации : Archives of Environmental Contamination and Toxicology. - 2001. - Vol. 41, Is. 2. - С. 157-162. - ISSN 00904341 (ISSN) , DOI 10.1007/s002440010233
Ключевые слова (''Своб.индексиров.''): 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.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Makhutova O. N., Shulepina S. P., Sharapova T. A., Dubovskaya O. P., Sushchik N. N., Baturina M. A., Pryanichnikova E. G., Kalachova G. S., Gladyshev M. I.
Заглавие : Content of polyunsaturated fatty acids essential for fish nutrition in zoobenthos species
Место публикации : Freshwater Sci.: University of Chicago Press, 2016. - Vol. 35, Is. 4. - С. 1222-1234. - ISSN 21619549 (ISSN) , DOI 10.1086/688760
Ключевые слова (''Своб.индексиров.''): fatty acids--fish--food quality--invasion--invertebrates--bryozoa--coleoptera--crustacea--dytiscus--ephemeroptera--gammaridae--hirudinea--insecta--invertebrata--mollusca--plumatella emarginata--polychaeta--trichoptera--turbellaria
Аннотация: Content of eicosapentaenoic acid (EPA, 20 : 5n-3) and docosahexaenoic acid (DHA, 22 : 6n-3) and the n-3/n-6 ratio are important indicators of nutritive value of aquatic invertebrates as food for fish. We studied fatty acid (FA) content and composition of 68 zoobenthic species. Benthic invertebrates differed significantly in their contents of EPA and DHA and n-3/n-6 ratios. The most valuable food for fish were Insecta, especially Ephemeroptera and Trichoptera, Gammaridae, and Turbellaria (Dendrocaelopsis sp.). The invertebrates of low food quality for fish were Hirudinea, Mollusca, Oligochaeta, Bryozoa (Plumatella emarginata), and Coleoptera (Dytiscus lapponicus). Our data suggest that the recent and ongoing global replacement of native species, mainly Insecta, by invaders, mostly represented by Mollusca, Crustacea, Polychaeta, Oligochaeta, Bryozoa, and Hirudinea, probably will reduce the nutritive value of food sources for benthivorous fish. In addition, some of the taxa studied have peculiar FAs, which may be useful as their markers in trophic webs. Thus, 20 : 1n-13, 20 : 2n-6, 22 : 5n-3, and 22 : 6n-3 are likely to be considered markers of Mollusca, Hirudinea, Turbellaria, and Gammaridae, respectively, for tracing food webs in freshwater ecosystems. © 2016 by The Society for Freshwater Science.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yemelyanova A.Y., Temerova T.A., Degermendzhy A.G.
Заглавие : Distribution of Gammarus lacustris Sars (Amphipoda, Gammaridae) in Lake Shira (Khakasia, Siberia) and laboratory study of its growth characteristics
Место публикации : Aquatic Ecology. - 2002. - Vol. 36, Is. 2. - С. 245-256. - ISSN 13862588 (ISSN) , DOI 10.1023/A:1015624205389
Ключевые слова (''Своб.индексиров.''): biomass--fresh-water shrimp--gammarus lacustris--growth--numbers--biomass--growth rate--saline lake--spatial distribution--zoobenthos--russian federation--amphipoda--cellular organisms--decapoda (crustacea)--gammaridae--gammarus--gammarus lacustris--invertebrata
Аннотация: Spatial distribution of Gammarus lacustris in Lake Shira and growth of young specimens that feed on lake biota were studied. The amphipods have been shown to inhabit the littoral, sublittoral and the upper aphytal zones of the lake on stony-sandy soil and silted sand. The young and adult individuals stay apart. The young live in submerged or semi-submerged vegetation in the littoral, the adults in the sublittoral and upper aphytal zones. Maximum density of amphipods was encountered in the areas influenced by human activity. The feeding experiments revealed that the lake plankton is a more important food source for G. lacustris than any other food species. The specific growth rate measured was 0.039 d-1, with a length increment 0.095 mm d-1.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Trofimova E.A., Zotina T.A., Bolsunovskii A.Y.
Заглавие : Estimation of transfer of technogenic radionuclides in food chains of the Yenisei river
Место публикации : Contemporary Problems of Ecology. - 2012. - Vol. 5, Is. 4. - С. 365-370. - ISSN 19954255 (ISSN) , DOI 10.1134/S1995425512040142
Ключевые слова (''Своб.индексиров.''): 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.
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14.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Syshchik N.N., Skoptsova G.N., Parfentsova L.S., Kalacheva G.S.
Заглавие : Evidences on selective feeding of omnivorous species of zoobenthos in a fish pond on the basis of biochemical markers
Колич.характеристики :3 с
Место публикации : Dokl. Akad. Nauk: MEZHDUNARODNAYA KNIGA, 1999. - Vol. 364, Is. 4. - P566-568. - ISSN 0869-5652
Примечания : Cited References: 9
Предметные рубрики: FATTY-ACIDS
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15.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Borisova E. V., Makhutova O. N., Gladyshev M. I., Sushchik N. N.
Заглавие : Fluxes of biomass and essential polyunsaturated fatty acids from water to land via chironomid emergence from a mountain lake
Место публикации : Contemp. Probl. Ecol.: Maik Nauka Publishing / Springer SBM, 2016. - Vol. 9, Is. 4. - С. 446-457. - ISSN 19954255 (ISSN) , DOI 10.1134/S199542551604003X
Ключевые слова (''Своб.индексиров.''): amphibiotic insect emergence--biogenic fluxes from water to land--chironomidae--mountain landscape--polyunsaturated fatty acids--chironomidae--hexapoda
Аннотация: The taxonomic composition, seasonal dynamics, and emergence intensity of chironomid adults (the Chironomidae family) emerging from Oiskoe mountain oligotrophic lake (Western Sayan, Southern Siberia) have been established. The value of the annual emergence of chironomid adults averages 0.42 g wet weight m-2 in the lake area and approaches the value of potential emergence, which is calculated based on the estimate of zoobenthos secondary production. For the first time the fatty-acid composition and contents of essential omega-3 polyunsaturated fatty acids (PUFAs) are compared between the larvae and adult stages of chironomids. The PUFA content per wet weight unit in adults is more than 7 times higher than that in larvae. The PUFA flux per lake area unit resulting from the chironomid emergence amounted to 1.752 mg m-2 y-1, which is over 10 times lower than the global estimate for the emergence of amphibiotic insects. Calculations show that the PUFA flux brought with the chironomid emergence per land unit of the studied mountain territory is very low when compared to that for other landscapes, with the exception of the shoreline part of the territory with a width of 15 m, in which the PUFA flux is comparable to that in productive landscapes. © 2016, Pleiades Publishing, Ltd.
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16.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Gribovskaya I.V., Ivanova E.A., Moskvichova A.V., Muchkina E.Ya., Chuprov S.M.
Заглавие : Metal Concentrations in the Ecosystem and Around Recreational and Fish-Breeding Pond Bugach
Место публикации : Water Resources. - 2001. - Vol. 28, Is. 3. - С. 288-296. - ISSN 00978078 (ISSN) , DOI 10.1023/A:1010400807660
Аннотация: Data of two field studies were used to analyze the concentrations of Na, K, Ca, Mg, Fe, Mn, Zn, Cu, Al, Cr, Ni, Cd, and Pb in the water, bottom deposits, zoobenthos, fish, and macrophytes of the Pond Bugach and in the soils near the pond. It was established that the majority of metals in the soils and bottom deposits correlate and their concentrations are governed by the universal geochemical factors of the region. The heavy metals were recognized that originate from anthropogenic sources and their concentrations were found to exceed the maximum admissible values for different components of the ecosystem. Five types of heavy metals migration were recognized in the soil-bottom deposits-zoobenthos-fish chain and in macrophytes. Statistically significant difference was found to exist between the concentrations of some heavy metals in the muscles of fish species with different food types (crucian carp and perch) as well as between the correlations of metals. The recorded concentrations were compared with the concentrations of metals measured in the last decade in other limnetic ecosystems in Siberia, Europe, North America, and China.
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17.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Degermendzhi A.G., Kosolapova L.G., Belolipetskij V.M.
Заглавие : Predictive radioecological mathematical model of the Yenisei river
Место публикации : Radiatsionnaya Biologiya. Radioekologiya. - 2002. - Vol. 42, Is. 4. - С. 433-439. - ISSN 08698031 (ISSN)
Ключевые слова (''Своб.индексиров.''): cesium--contamination--mathematical models--phosphorus--radioisotopes--river pollution--cesium 137--phosphorus 32--radioecology--the yenisei river--ecosystems--bacteria (microorganisms)--fresh water--article--ecosystem--pollutant--russian federation--theoretical model--ecosystem--fresh water--models, theoretical--radioactive pollutants--russia
Аннотация: A one-dimensional mathematical model of the Yenisei river ecosystem including hydrological, ecosystem and radioecologicl blocks has been developed. The model was used to evaluate contribution of different processes (transfer by water masses, dilution, radioactive decay, bioaccumulation) into self-purification of the river water from a radiation pollution. The pollution density of ecosystem components (bacteria, phyto-, zooplankton, phyto-, zoobenthos, detritus) with 137Cs and 32P is calculated.
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18.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kalacheva G.S., Gladyshev M.I., Sushchik N.N., Dubovskaya O.P., Shulepina S.P., Ageev A.V.
Заглавие : Production of polyunsaturated fatty acids by zoobenthos in rivers with contrasting temperatures
Место публикации : Doklad. Biochem. Biophys. - 2013. - Vol. 453, Is. 1. - P308-311. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672913060094
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19.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : V. Zuev I., Shulepina S. P., Trofimova E. A., Zotina T. A.
Заглавие : Seasonal changes in feeding and relative condition factors of Arctic grayling (Thymallus arcticus) in a stretch of the middle reaches of the Yenisei River
Место публикации : Contemp. Probl. Ecol.: Maik Nauka Publishing / Springer SBM, 2017. - Vol. 10, Is. 3. - С. 250-258. - ISSN 19954255 (ISSN) , DOI 10.1134/S1995425517030143
Ключевые слова (''Своб.индексиров.''): amphipods--apatania crymophila--feeding spectrum--relative condition factor--thymallus arcticus--zoobenthos--amphipoda--apatania crymophila--thymallus arcticus--trichoptera
Аннотация: The seasonal dynamics of feeding spectra and diet of Arctic graying in a stretch of the middle reaches of the Yenisei River (from the dam of the Krasnoyarsk HPP to the mouth of the Kan River) was studied in 2009–2013. Its connection with the food-supply state and fish growth has been traced. It has been shown that the intensity of fish feeding is relatively stable throughout the year, despite significant fluctuations in zoobenthos biomass. The contribution of groups dominating in diet (amphipods and larvae of caddisflies) changes depending on the month. Amphipods prevail in the diet of fish during the period from June to October and caddisflies prevail in the winter and spring months. Among caddisflies, selective feeding on a small species, Apatania crymophila, has been revealed. The change of the primary diet component during the summer period corresponds to a sharp increase in the coefficients of relative condition factors with a peak in August–September. It has been assumed that changes in the ratio of weight and linear sizes of fish are associated not only with an increase in the water temperature, but also with the grayling switching to the consumption of amphipods with a higher nutrition value. © 2017, Pleiades Publishing, Ltd.
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20.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gladyshev M.I., Sushchik N.N., Kravchuk E.S., Ivanova E.A., Ageev A.V., Kalacheva G.S.
Заглавие : Seasonal changes in the standing stock of essential polyunsaturated fatty acids in the biomass of phyto- and zoobenthos on a littoral station of the Yenisei River
Место публикации : Doklady Biological Sciences. - 2005. - Vol. 403, Is. 1-6. - С. 267-268. - ISSN 00124966 (ISSN) , DOI 10.1007/s10630-005-0107-9
Ключевые слова (''Своб.индексиров.''): essential fatty acid--animal--article--lipid metabolism--metabolism--physiology--phytoplankton--river--russian federation--season--zooplankton--animals--fatty acids, essential--lipid metabolism--phytoplankton--rivers--seasons--siberia--zooplankton
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