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^a341.35.33.09^2VINITI
Ш 64

Широбокова, И. М.
Математическое моделирование влияния структурной организации экосистемы на величину чистой первичной продукции [Текст] : научное издание / И. М. Широбокова, Н. С. Печуркин // Microorganisms in Ecosystems of Lakes, Rivers and Reservoirs. - Irkutsk, 2003. - С. 154-155 . - ISBN 5-94797-034-1

ГРНТИ

34.35.33

РУБ 341.35.33.09
Рубрики:
ВОДНЫЕ ЭКОСИСТЕМЫ
   ЧИСТАЯ ПЕРВИЧНАЯ ПРОДУКЦИЯ
   СТРУКТУРНАЯ ОРГАНИЗАЦИЯ
   МАТЕМАТИЧЕСКИЕ МОДЕЛИ
Аннотация: Построены и проанализированы математические модели 4 типов простых экосистем с различной структурой. Основными звеньями систем являются: биогенные лимитирующие вещества, продуценты, детрит и хищники 1-го, 2-го и т. д. порядка.Исследовано изменение величины чистой первичной продукции при наличии внешнего возмущения (увеличении входной конц-ии субстрата) для экосистем с различной длиной трофической цепи (от 3 до 7 трофических звеньев), различной степенью замкнутости круговорота и различными типами регуляции. Более эффективное увеличение величины чистой первичной продукции происходит в экосистемах (в экосистемах с ресурсным контролем). Для экосистем, контролируемых сверху хищником, характерно менее заметное увеличение величины чистой первичной продукции при увеличении входной конц-ии лимитирующего вещества. Экосистемы, имеющие регуляцию снизу-вверх, способны более эффективно использовать дополнительный поток энергии, поступающей в экосистему, при этом стационарная (остаточная) конц-ия лимитирующего вещества остается на прежнем уровне. Величина чистой первичной продукции возрастает с увеличением длины трофической цепи и степени замкнутости круговорота. Россия, Ин-т биофизики СО РАН, 660036, Красноярск, Академгородок, pech@ibp.ru
: 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Печуркин, Н.С.

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^a341.27.19.11^2VINITI
П 31

Печуркин, Н. С.
Моделирование циклов лимитирующих веществ в водоемах с различной структурой [Текст] : научное издание / Н. С. Печуркин, И. М. Широбокова // Microorganisms in Ecosystems of Lakes, Rivers and Reservoirs. - Irkutsk, 2003. - С. 121-122 . - ISBN 5-94797-034-1

ГРНТИ

34.27.19

РУБ 341.27.19.11
Рубрики:
ВОДНЫЕ ЭКОСИСТЕМЫ
   БИОГЕННОЕ ЛИМИТИРОВАНИЕ
   ВЛИЯНИЕ СТРУКТУРЫ ЭКОСИСТЕМЫ
   МАТЕМАТИЧЕСКИЕ МОДЕЛИ
Аннотация: Представлены математические модели, описывающие поведение упрощенных экосистем различных типов: с различной степенью замыкания биотического круговорота (от открытых до полностью замкнутых, с учетом разложения мертвого органического вещества микроорганизмами); с различным числом трофических звеньев; с различными интенсивностями входных-выходных потоков лимитирующего вещества и его общим кол-вом в системе. Адаптационная ценность изменений на нижних уровнях (организменный, популяционный, уровень трофической цепи) оценивалась по интегральному показателю функционирования всей системы - чистой первичной продукции. Предложенный подход использован для оценки вклада интродуцируемого хищника в скорость круговорота лимитирующего вещества. Получено, что длина трофической цепи зависит от общей конц-ии биогенных элементов (I) в системе. При низкой конц-ии I (менее 1 мг/л) в системе может существовать только 2 трофических уровня. По мере увеличения конц-ии I в системе могут появляться новые трофические звенья. При этом чистая первичная продукция системы возрастает и увеличивается длина трофической цепи. Предложен новый универсальный критерий эффективности работы цикла. Он представляет собой отношение чистой первичной продукции к общей конц-ии лимитирующего вещества. Данный коэффициент характеризует собой удельную скорость работы цикла и является показателем доли чистой первичной продукции, приходящейся на единицу I. Удельная скорость работы цикла имеет оптимальное значение при небольшом числе трофических звеньев и снижается при увеличении длины трофической цепи. Возможно, что данный эффект может служить объяснением существования в природных экосистемах ограниченного числа трофических звеньев. Россия, Ин-т биофизики СО РАН, 660036, Красноярск, Академгородок, pech@ibp.ru
: 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Широбокова, И.М.

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^a341.35.33.57.02^2VINITI
Г 15

Галайда, Я. В.
Влияние скорости протока на интенсивность биотического круговорота в водных экосистемах с различной трофической структурой [Текст] : научное издание / Я. В. Галайда, Н. С. Печуркин // Microorganisms in Ecosystems of Lakes, Rivers and Reservoirs. - Irkutsk, 2003. - С. 47-48 . - ISBN 5-94797-034-1

ГРНТИ

34.35.33

РУБ 341.35.33.57.02
Рубрики:
ВОДНЫЕ ЭКОСИСТЕМЫ
   ПЕРВИЧНАЯ ПРОДУКЦИЯ
   СКОРОСТЬ КРУГОВОРОТА
   РАЗЛИЧИЕ ТРОФИЧЕСКОЙ СТРУКТУРЫ
   ВЛИЯНИЕ СКОРОСТИ ВОДОТОКА
Аннотация: Исследовали модельные экосистемы с различным числом трофических звеньев, незамкнутые и замкнутые с учетом возврата лимитирующего вещества в цикл через разложение детрита и продукты жизнедеятельности консументов. Звеньями экосистем были - лимитирующее биогенное вещество, продуцент, первый консумент - хищник первого рода, хищник второго рода, хищник третьего рода и детрит. В результате численных расчетов получено, что увеличение удельной скорости протока в незамкнутых экосистемах приводит к постепенному вымыванию трофических уровней из системы, что соответствует классической модели хемостата. При этом, чистая первичная продукция возрастает до макс. значения, к-рое соответствует двухуровневой трофической цепи (биогенное вещество и продуцент). Дальнейшее повышение скорости протока приводит к вымыванию продуцентов из системы и снижает чистую первичную продукцию до нуля. В замкнутых же экосистемах границы вымывания сдвигаются из-за замыкания системы. Замыкание экосистем увеличивает чистую первичную продукцию на порядок. Это происходит в связи с тем, что возврат биогенных элементов в круговорот увеличивает их конц-ию в системе и приводит к увеличению биомассы продуцентов. При интродукции хищника первого рода, как в незамкнутые, так и в замкнутые экосистемы, уменьшается чистая первичная продукция экосистемы из-за уменьшения численности выедаемого звена продуцентов, при этом увеличение пула питательных веществ не компенсирует потери продуцентов. Уменьшение чистой первичной продукции в замкнутых экосистемах значительно сильнее, чем в незамкнутых. Интродукция хищника первого рода в систему с регуляцией "снизу-вверх" приводит к смене типа регуляции на "сверху-вниз" и снижению чистой первичной продукции. При интродукции еще одного хищника система вновь меняет тип регуляции, и чистая первичная продукция возрастает до исходных значений. Интродукция хищника второго рода в систему с регуляцией "сверху-вниз" приводит к смене типа регуляции и увеличению чистой первичной продукции, а при добавлении хищника третьего рода, чистая первичная продукция опять падает до значений, характерных для регуляции "сверху-вниз". Россия, Красноярский гос. Ун-т, пр. Сободный 81, Красноярск, Sq mouse@mail.ru
: 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Печуркин, Н.С.

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Zooplankton of Lake Pyasino and the Rivers Flowing into It after the Diesel Spill in 2020 / O. P. Dubovskaya, O. E. Yolgina, I. I. Morozova // Contemp. Probl. Ecol. - 2021. - Vol. 14, Is. 4. - P380-390, DOI 10.1134/S199542552104003X. - Cited References:35. - This work was supported by economic agreement no. 223-EP-2020/07 with the Siberian Branch of the Russian Academy of Sciences. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
NONPREDATORY MORTALITY
   OIL-SPILLS
   RECORDS
   BASIN
   STATE
Кл.слова (ненормированные):
zooplankton -- Lake Pyasino -- species composition -- abundance -- biomass -- production -- fish productivity -- oil spills -- water quality
Аннотация: At the beginning of August, 2 months after 20 000 t of diesel fuel spilled into the Bezymyanny Stream (which took it out to the Daldykan and Ambarnaya rivers), the large Norilsk expedition of the Siberian Branch, Russian Academy of Sciences, sampled net zooplankton at 13 stations located in both sections of these rivers and Lake Pyasino with the Pyasina River outflowing from it. A comparative analysis of the species composition, abundance, biomass, and saprobity index of zooplankton at these stations has been carried out. The productions of rotifer and crustacean zooplankton and potential production of planktivorous fish in Lake Pyasino have been calculated. Based on the state of zooplankton, a gradual improvement in water quality has been observed from river areas exposed to the oil products to the northern part of the lake and the River Pyasina outflow. The low abundance and biomass of zooplankton in the lake (43 800 +/- 17 550 ind./m(3), 112.8 +/- 26.2 mg/m(3), on average) due to the dominance of rotifers (Ploesoma truncatum (Levander), Bipalpus hudsoni (Imhof), and Conochilus unicornis Rousselet) resulted in low values of zooplankton production and the potential production of planktivorous fish (0.85 kg/ha per season).

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Держатели документа:
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Dubovskaya, O. P.; Yolgina, O. E.; Morozova, I. I.; Siberian Branch of the Russian Academy of SciencesRussian Academy of Sciences [223-EP-2020/07]

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Zoobenthos of Lake Pyasino and the Rivers Flowing into It after the Diesel Spill of 2020 / S. P. Shulepina, O. P. Dubovskaya, L. A. Glushchenko // Contemp. Probl. Ecol. - 2021. - Vol. 14, Is. 4. - P391-398, DOI 10.1134/S1995425521040077. - Cited References:32. - This work was supported by the Siberian Branch, Russian Academy of Sciences, contract no. 223-EP-2020/07. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
CRUDE-OIL SPILL
Кл.слова (ненормированные):
zoobenthos -- species composition -- abundance -- biomass -- production -- fish -- productivity -- oil spills -- water quality
Аннотация: The species composition and quantitative characteristics of the zoobenthos in Lake Pyasino and rivers flowing into it after a diesel spill have been analyzed. The production of zoobenthos and potential production of benthivorous fish in Lake Pyasino have been calculated. A small number of zoobenthos species and low values of abundance and biomass are revealed. In the Bezymyanny Stream, the mouth of the Daldykan River, and the Ambarnaya River, oligochaetes Limnodrilus hoffmeisteri Claparede and Tubifex tubifex (O. F. Muller) dominate in the zoobenthos abundance and biomass. In Lake Pyasino and the Pyasina River outflow, larvae of caddis flies, chironomids, stoneflies, and amphipods prevail. In the area of the deepwater silted station of Lake Pyasino, oligochaetes L.hoffmeisteri develop, the proportion of which in the benthic fauna at this station (40 and 79% of the total biomass and abundance, respectively) is maximal. The amphipod Monoporeia affinis (Lindstrom) dominates in terms of biomass at this station. A decrease in the chironomid diversity, an increase in the proportion of polysaprobic oligochaetes, and lower values of the Shannon index in Lake Pyasino in 2020 when compared to 1992 are found. The low abundance (2181 +/- 2048 ind./m(2)) and biomass (2.01 +/- 1.85 g/m(2)) of zoobenthos in the lake results in low values of zoobenthos production and the potential production of benthivorous fish (3 kg/ha per season). Based on the state of zoobenthos, an improvement in water quality has been observed from river sections exposed to the oil spill to the lake and the source of the River Pyasina.

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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Russian Acad Sci, Siberian Branch, Krasnoyarsk Sci Ctr, Inst Biophys,Fed Res Ctr, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Shulepina, S. P.; Dubovskaya, O. P.; Glushchenko, L. A.; Siberian Branch, Russian Academy of SciencesRussian Academy of Sciences [223-EP-2020/07]

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Use of the aquatic plant Elodea canadensis to assess toxicity and genotoxicity of Yenisei River sediments / T. A. Zotina [et al.] // Environ. Toxicol. Chem. - 2015. - Vol. 34, Is. 10. - P2310-2321, DOI 10.1002/etc.3057 . - ISSN 0730-7268
Кл.слова (ненормированные):
Aquatic plants -- Biomarkers -- Genotoxicity -- Sediment quality -- Sediment toxicity -- Biomarkers -- Chromosomes -- Cytotoxicity -- Pollution -- Pollution control -- Radioactive waste disposal -- Radioactivity -- River pollution -- Sediments -- Toxicity -- Aquatic plants -- Genotoxicities -- Laboratory bioassay -- Radioactive contamination -- Radioactive pollution -- Sediment quality -- Sediment toxicity -- Toxicity endpoints -- Rivers -- Article -- bioassay -- controlled study -- cytotoxicity -- Elodea canadensis -- environmental exposure -- genotoxicity -- indicator organism -- lake sediment -- mitosis index -- nonhuman -- plant growth -- plant root -- priority journal -- radioactive pollution -- river -- root length -- Russian Federation -- sensitivity analysis -- shoot -- toxicity testing -- Elodea -- Elodea canadensis
Аннотация: The toxicity, cytotoxicity, and genotoxicity of bulk sediments from the Yenisei River (Siberia, Russia) were estimated in laboratory bioassays based on several endpoints in the aquatic plant Elodea canadensis. The bottom sediment samples were collected in the Yenisei River upstream and downstream of the sources of chemical and radioactive contamination. The testing revealed different sensitivities of Elodea endpoints to the quality of the bottom sediment: weight of shoots
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Держатели документа:
Institute of Biophysics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russian Federation

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

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Tracing the North Atlantic decadal-scale climate variability in a late Holocene pollen record from southern Siberia / S. Hildebrandt [et al.] // Palaeogeogr. Palaeoclimatol. Palaeoecol. - 2015. - Vol. 426. - P75-84, DOI 10.1016/j.palaeo.2015.02.037 . - ISSN 0031-0182
Кл.слова (ненормированные):
Atlantic Multidecadal Oscillation -- Human impact -- Lake level -- Late Holocene -- Non-pollen palynomorphs -- Pollen -- Siberia
Аннотация: This paper presents a new palynological record from a 146. cm long finely laminated sediment core obtained in 2009 from the deep-water meromictic Lake Shira (54°30'38'N, 90°12''09'E; ca. 353. m. a.s.l.) situated in the Khakassian steppe region of southern Siberia between the rivers Ob' and Yenisei. The area is rich in lakes and represents an exceptionally well preserved sequence of Bronze and Iron Age archeological cultures. Little is known about the changes in vegetation and climate of the region during the Holocene. The palynological analysis of the core allows us to partly fill up this gap in current knowledge. The record of pollen and non-pollen palynomorphs presented here covers the past 2450. year interval with an average resolution of 22. years. The results obtained support the interpretation that the late Holocene vegetation changes around Lake Shira are mainly associated with large-scale atmospheric circulation processes controlling the regional water balance rather than with human activities. An attempt to trace human impact in the pollen assemblages provides no clear evidence for anthropogenic activity, except for the last few decades since ca. 1955, though the region has a long history of mobile pastoralists. For explanation of decadal-scale changes in the regional vegetation cover, the Artemisia/Chenopodiaceae (A/C) pollen ratio proved to be a reliable indicator of effective moisture availability. Using available fossil and published instrumental data our study suggests a link between the North Atlantic warmer/colder temperatures and higher/lower atmospheric precipitation (or moisture availability) in southern Siberia at multi-decadal to centennial scales. © 2015 Elsevier B.V.

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Держатели документа:
Institute of Geological Sciences, Palaeontology, Free University Berlin, Malteserstra?e 74-100, Building DBerlin, Germany
Siberian Branch of Russian Academy of Sciences, Institute of Geology and Mineralogy, Prospekt akademika Koptyuga 3Novosibirsk, Russian Federation
Eurasia Department/Beijing Branch Office, German Archaeological Institute, Im Dol 2-6Berlin, Germany
Siberian Branch of Russian Academy of Sciences, Institute of Biophysics, Akademgorodok 50, str. 50Krasnoyarsk, Russian Federation
ИБФ СО РАН

Доп.точки доступа:
Hildebrandt, S.; Muller, S.; Kalugin, I.A.; Dar'in, A.V.; Wagner, M.; Rogozin, D.Y.; Tarasov, P.E.

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Status, trends, and future dynamics of freshwater ecosystems in Europe and Central Asia / R. E. Gozlan [et al.] // Inland Waters. - 2019, DOI 10.1080/20442041.2018.1510271 . - Article in press. - ISSN 2044-2041
Кл.слова (ненормированные):
aquatic -- biodiversity -- conservation -- habitat
Аннотация: This review is part of the Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES) report on Europe and Central Asia (ECA) and provides a critical assessment of issues facing decision-makers, including freshwater biodiversity and ecosystem trends as well as drivers of change. Freshwater systems are well established as the most threatened ecosystem type in the ECA region, with the quantity and quality of habitats and abundance of many species rapidly declining. Only about half (53%) of the EU's rivers and lakes achieved good ecological status in 2015 (as defined by the Water Framework Directive in terms of the quality of the biological community), and many lakes, ponds, and streams are disappearing as a consequence of agricultural intensification and inefficient irrigation and urbanisation, combined with climate change. The situation regarding freshwater biodiversity remains highly critical in ECA as many species remain threatened with extinction, including >50% of known species for some groups (e.g., molluscs, amphibians). Drivers of ECA freshwater taxa include the destruction or modification of their habitat, including water abstraction, which affects ?89% of all amphibian threatened species and ?26% of threatened freshwater invertebrate species. Of particular concern is the lack of data for freshwater invertebrates. Current status is available for only a minority of species, and the impact of alien invasive species is often unknown, especially in Central Asia. Based on current freshwater biodiversity trends, it is highly unlikely that ECA will achieve either the respective Aichi biodiversity targets by 2020 (i.e., targets 2 to 4, 6 to 12, and 14) or Target 1 of the Biodiversity Strategy. © 2019, © 2019 International Society of Limnology (SIL).

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Держатели документа:
ISEM UMR226, Universite de Montpellier, CNRS, IRD, EPHE, Montpellier, 34090, France
Department of ecology and water resources management, Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Tashkent, Uzbekistan
Institute of Biophysics, Krasnoyarsk Scientific Center, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Severtsov Institute of Ecology and Evolution, Moscow, Russian Federation
Aquatic Ecology Group, University of Vic–Central University of Catalonia, Vic, Spain
Catalan Institution for Research and Advanced Studies, ICREA, Barcelona, Spain

Доп.точки доступа:
Gozlan, R. E.; Karimov, B. K.; Zadereev, E.; Kuznetsova, D.; Sandra Brucet S, S.

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Standing stock and potential yield of essential polyunsaturated fatty acids in zoobentos of the Enisei river / M. I. Gladyshev [и др.] // Doklady Akademii Nauk. - 2004. - Vol. 394, Is. 1. - С. 133-135 . - ISSN 0869-5652
Кл.слова (ненормированные):
Biomass -- Composition -- Fatty acids -- Food products -- Rivers -- Zoobentos -- Fisheries
Аннотация: Such estimation for the big river was conducted for the first time and showed that the ecosystem of central Enisei segment with near 780 km length is able to provide alimentary requirements in eicosopentaenoic plus docosohexaenoic acids for only several thousand people.

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

Доп.точки доступа:
Gladyshev, M.I.; Suschik, N.N.; Andrianova, A.V.; Makhutova, O.N.; Kalacheva, G.S.; Shulepina, S.P.

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10.

Stable isotope composition of fatty acids in organisms of different trophic levels in the yenisei river / M. I. Gladyshev [et al.] // PLoS ONE. - 2012. - Vol. 7, Is. 3. - Ст. e34059, DOI 10.1371/journal.pone.0034059 . - ISSN 1932-6203
Кл.слова (ненормированные):
carbon 13 -- fatty acid -- carbon -- Apatania crymophila -- article -- benthos -- Eulimnogammarus viridis -- fatty acid analysis -- fatty acid desaturation -- Fontinalis antipyretica -- food chain -- food web -- freshwater fish -- isotope analysis -- lipid composition -- microalga -- moss -- nonhuman -- pelagic zone -- river ecosystem -- Russian Federation -- stable isotope analysis -- Thymallus arcticus -- trophic level -- animal -- chemistry -- larva -- metabolism -- river -- Bryophyta -- Gammaridae -- Trichoptera -- Animals -- Carbon Isotopes -- Fatty Acids -- Food Chain -- Larva -- Microalgae -- Rivers
Аннотация: We studied four-link food chain, periphytic microalgae and water moss (producers), trichopteran larvae (consumers I), gammarids (omnivorous - consumers II) and Siberian grayling (consumers III) at a littoral site of the Yenisei River on the basis of three years monthly sampling. Analysis of bulk carbon stable isotopes and compound specific isotope analysis of fatty acids (FA) were done. As found, there was a gradual depletion in 13C contents of fatty acids, including essential FA upward the food chain. In all the trophic levels a parabolic dependence of ? 13C values of fatty acids on their degree of unsaturation/chain length occurred, with 18:2n-6 and 18:3n-3 in its lowest point. The pattern in the ? 13C differences between individual fatty acids was quite similar to that reported in literature for marine pelagic food webs. Hypotheses on isotope fractionation were suggested to explain the findings. В© 2012 Gladyshev et al.

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

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

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11.

Spatial and temporal variation in Arctic freshwater chemistry—Reflecting climate-induced landscape alterations and a changing template for biodiversity / B. J. Huser, M. N. Futter, D. Bogan [et al.] // Freshw. Biol. - 2020, DOI 10.1111/fwb.13645 . - Article in press. - ISSN 0046-5070
Кл.слова (ненормированные):
biogeochemistry -- eutrophication -- lakes -- oligotrophication -- rivers
Аннотация: Freshwater chemistry across the circumpolar region was characterised using a pan-Arctic data set from 1,032 lake and 482 river stations. Temporal trends were estimated for Early (1970–1985), Middle (1986–2000), and Late (2001–2015) periods. Spatial patterns were assessed using data collected since 2001. Alkalinity, pH, conductivity, sulfate, chloride, sodium, calcium, and magnesium (major ions) were generally higher in the northern-most Arctic regions than in the Near Arctic (southern-most) region. In particular, spatial patterns in pH, alkalinity, calcium, and magnesium appeared to reflect underlying geology, with more alkaline waters in the High Arctic and Sub Arctic, where sedimentary bedrock dominated. Carbon and nutrients displayed latitudinal trends, with lower levels of dissolved organic carbon (DOC), total nitrogen, and (to a lesser extent) total phosphorus (TP) in the High and Low Arctic than at lower latitudes. Significantly higher nutrient levels were observed in systems impacted by permafrost thaw slumps. Bulk temporal trends indicated that TP was higher during the Late period in the High Arctic, whereas it was lower in the Near Arctic. In contrast, DOC and total nitrogen were both lower during the Late period in the High Arctic sites. Major ion concentrations were higher in the Near, Sub, and Low Arctic during the Late period, but the opposite bulk trend was found in the High Arctic. Significant pan-Arctic temporal trends were detected for all variables, with the most prevalent being negative TP trends in the Near and Sub Arctic, and positive trends in the High and Low Arctic (mean trends ranged from +0.57%/year in the High/Low Arctic to ?2.2%/year in the Near Arctic), indicating widespread nutrient enrichment at higher latitudes and oligotrophication at lower latitudes. The divergent P trends across regions may be explained by changes in deposition and climate, causing decreased catchment transport of P in the south (e.g. increased soil binding and trapping in terrestrial vegetation) and increased P availability in the north (deepening of the active layer of the permafrost and soil/sediment sloughing). Other changes in concentrations of major ions and DOC were consistent with projected effects of ongoing climate change. Given the ongoing warming across the Arctic, these region-specific changes are likely to have even greater effects on Arctic water quality, biota, ecosystem function and services, and human well-being in the future. © 2020 The Authors. Freshwater Biology published by John Wiley & Sons Ltd.

Scopus
Держатели документа:
Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
Alaska Center for Conservation Science, University of Alaska Anchorage, Anchorage, AK, United States
Norwegian Water Resources & Energy Directorate, Oslo, Norway
Natural History Museum, University of Oslo, Oslo, Norway
Cold Regions Research Centre, Wilfrid Laurier University, Waterloo, ON, Canada
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Department of Ecology and Environmental Science, Climate Impacts Research Centre, Umea University, Abisko, Sweden
Paleoecological Environmental Assessment and Research Laboratory (PEARL), Department of Biology, Queen’s University, Kingston, ON, Canada
Norwegian Institute for Nature Research, Oslo, Norway
Canadian Rivers Institute and Department of Biology, University of New Brunswick, Fredericton, NB, Canada

Доп.точки доступа:
Huser, B. J.; Futter, M. N.; Bogan, D.; Brittain, J. E.; Culp, J. M.; Goedkoop, W.; Gribovskaya, I.; Karlsson, J.; Lau, D. C.P.; Ruhland, K. M.; Schartau, A. K.; Shaftel, R.; Smol, J. P.; Vrede, T.; Lento, J.

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12.

Spatial and temporal variation in Arctic freshwater chemistry-Reflecting climate-induced landscape alterations and a changing template for biodiversity / B. J. Huser, M. N. Futter, D. Bogan [et al.] // Freshw. Biol. - 2020, DOI 10.1111/fwb.13645. - Cited References:98. - Environment and Climate Change Canada; Cumulative Impact Monitoring Program, Government of Northwest Territories . - Article in press. - ISSN 0046-5070. - ISSN 1365-2427

РУБ Ecology + Marine & Freshwater Biology
Рубрики:
DISSOLVED ORGANIC-CARBON
PERMAFROST THAW
CHEMICAL LIMNOLOGY
Кл.слова (ненормированные):
biogeochemistry -- eutrophication -- lakes -- oligotrophication -- rivers
Аннотация: Freshwater chemistry across the circumpolar region was characterised using a pan-Arctic data set from 1,032 lake and 482 river stations. Temporal trends were estimated for Early (1970-1985), Middle (1986-2000), and Late (2001-2015) periods. Spatial patterns were assessed using data collected since 2001. Alkalinity, pH, conductivity, sulfate, chloride, sodium, calcium, and magnesium (major ions) were generally higher in the northern-most Arctic regions than in the Near Arctic (southern-most) region. In particular, spatial patterns in pH, alkalinity, calcium, and magnesium appeared to reflect underlying geology, with more alkaline waters in the High Arctic and Sub Arctic, where sedimentary bedrock dominated. Carbon and nutrients displayed latitudinal trends, with lower levels of dissolved organic carbon (DOC), total nitrogen, and (to a lesser extent) total phosphorus (TP) in the High and Low Arctic than at lower latitudes. Significantly higher nutrient levels were observed in systems impacted by permafrost thaw slumps. Bulk temporal trends indicated that TP was higher during the Late period in the High Arctic, whereas it was lower in the Near Arctic. In contrast, DOC and total nitrogen were both lower during the Late period in the High Arctic sites. Major ion concentrations were higher in the Near, Sub, and Low Arctic during the Late period, but the opposite bulk trend was found in the High Arctic. Significant pan-Arctic temporal trends were detected for all variables, with the most prevalent being negative TP trends in the Near and Sub Arctic, and positive trends in the High and Low Arctic (mean trends ranged from +0.57%/year in the High/Low Arctic to -2.2%/year in the Near Arctic), indicating widespread nutrient enrichment at higher latitudes and oligotrophication at lower latitudes. The divergent P trends across regions may be explained by changes in deposition and climate, causing decreased catchment transport of P in the south (e.g. increased soil binding and trapping in terrestrial vegetation) and increased P availability in the north (deepening of the active layer of the permafrost and soil/sediment sloughing). Other changes in concentrations of major ions and DOC were consistent with projected effects of ongoing climate change. Given the ongoing warming across the Arctic, these region-specific changes are likely to have even greater effects on Arctic water quality, biota, ecosystem function and services, and human well-being in the future.

WOS
Держатели документа:
Swedish Univ Agr Sci, Dept Aquat Sci & Assessment, Box 7050, S-75007 Uppsala, Sweden.
Univ Alaska Anchorage, Alaska Ctr Conservat Sci, Anchorage, AK USA.
Norwegian Water Resources & Energy Directorate, Oslo, Norway.
Univ Oslo, Nat Hist Museum, Oslo, Norway.
Wilfrid Laurier Univ, Cold Regions Res Ctr, Waterloo, ON, Canada.
Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk, Russia.
Umea Univ, Climate Impacts Res Ctr, Dept Ecol & Environm Sci, Umea, Sweden.
Queens Univ, Dept Biol, Paleoecol Environm Assessment & Res Lab PEARL, Kingston, ON, Canada.
Norwegian Inst Nat Res, Oslo, Norway.
Univ New Brunswick, Canadian Rivers Inst, Fredericton, NB, Canada.
Univ New Brunswick, Dept Biol, Fredericton, NB, Canada.

Доп.точки доступа:
Huser, Brian J.; Futter, Martyn N.; Bogan, Daniel; Brittain, John E.; Culp, Joseph M.; Goedkoop, Willem; Gribovskaya, Iliada; Karlsson, Jan; Lau, Danny C. P.; Ruhland, Kathleen M.; Schartau, Ann Kristin; Shaftel, Rebecca; Smol, John P.; Vrede, Tobias; Lento, Jennifer; Environment and Climate Change Canada; Cumulative Impact Monitoring Program, Government of Northwest Territories

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13.

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.

Scopus
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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14.

Secondary Production of Highly Unsaturated Fatty Acids by Zoobenthos Across Rivers Contrasting in Temperature [Text] / M. I. Gladyshev [et al.] // River Res. Appl. - 2016. - Vol. 32, Is. 6. - P1252-1263, DOI 10.1002/rra.2945. - Cited References:55. - The work was supported by the project no. 6.1089.214/K of Siberian Federal University carried out according to Federal Tasks of Ministry of Education and Science of Russian Federation and by Russian Federal Tasks of Fundamental Research (project no. 51.1.1). . - ISSN 1535-1459. - ISSN 1535-1467

РУБ Environmental Sciences + Water Resources
Рубрики:
AQUATIC ECOSYSTEMS
   CLIMATE-CHANGE
   YENISEI RIVER
   ALPINE PONDS
   LAKE
Кл.слова (ненормированные):
essential polyunsaturated fatty acids -- river zoobenthos -- secondary -- production -- biodiversity -- water temperature -- climate warming
Аннотация: Highly unsaturated fatty acids (HUFA), namely eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA), which are essential for many animals, including humans, are mainly produced in aquatic trophic webs. In fast-flowing rivers, macrozoobenthos is the main source of HUFA for fish and may be particularly vulnerable to thermal alterations associated with climate change. We studied benthic communities in a unique natural ecosystem: the Yenisei River downstream of the dam of Krasnoyarsk Hydroelectric Power Station with very low temperature in summer because of discharge of cold water from deep in the reservoir and its tributaries with high summer temperature. This natural experiment' allowed to get rid of confounding factors, such as differences in light, seasonality, geology (biogeochemistry) and biogeography (regional species pools). As found, in spite of an increase of biodiversity and rates of daily production in warm rivers compared with cold sites, DHA and partly EPA production of zoobenthos decreased with the increase of temperature because of changes in species composition. Thus, in a climate warming context, we can predict a decrease of production of these HUFA by river zoobenthos and thereby a diminishing of their supply for fish and next to humans. Copyright (c) 2015 John Wiley & Sons, Ltd.

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Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Gladyshev, M. I.; Sushchik, N. N.; Shulepina, S. P.; Ageev, A. V.; Dubovskaya, O. P.; Kolmakova, A. A.; Kalachova, G. S.; Siberian Federal University [6.1089.214/K]; Russian Federal Tasks of Fundamental Research [51.1.1]

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15.

Seasonal transfer of the pool of the essential eicosapentaenoic acid along the pelagic trophic chain of a eutrophic reservoir / N. N. Sushchik [et al.] // Doklady Biological Sciences. - 2008. - Vol. 422, Is. 1. - P355-356, DOI 10.1134/S0012496608050232 . - ISSN 0012-4966
Кл.слова (ненормированные):
fresh water -- icosapentaenoic acid -- article -- biomass -- metabolism -- microbiology -- phytoplankton -- population density -- river -- Russian Federation -- season -- Biomass -- Eicosapentaenoic Acid -- Fresh Water -- Phytoplankton -- Population Density -- Rivers -- Russia -- Seasons -- Water Microbiology

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Kransnoyarsk 660036, Russian Federation
Siberian Federal University, Krasnoyarsk 660062, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Sushchik, N.N.; Gladyshev, M.I.; Makhutova, O.N.; Kravchuk, E.S.; Dubovskaya, O.P.; Kalacheva, G.S.

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16.

Seasonal dynamics of standing stock of essential polyunsaturated fatty acids in biomass of phyto- and zoobenthos at a littoral station in Enisei river / M. I. Gladyshev [и др.] // Doklady Akademii Nauk. - 2005. - Vol. 403, Is. 2. - С. 277-278 . - ISSN 0869-5652
Кл.слова (ненормированные):
Composition -- Ecosystems -- Fatty acids -- Rivers -- Littoral ecosystems -- Phytobenthos -- Seasonal variations -- Zoobenthos -- Biomass
Аннотация: It is established for the first time that in the river littoral ecosystem standing stock of essential polyunsaturated fatty acids in spring and early summer is accumulated in phytobenthos biomass, whereas in the fall the main part of this stock is shifted to the zoobenthos biomass. In the latter proceeds the concentrating of standing stock of essential polyunsaturated fatty acids of ?3 family, i.e. eicosapentaenoic and docosahexaenoic acids.

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

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Kravchuk, E.S.; Ivanova, E.A.; Ageev, A.V.; Kalacheva, G.S.

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17.

Seasonal dynamics of fatty acid content of a common food fish from the Yenisei river, Siberian grayling, Thymallus arcticus / N. N. Sushchik, M. I. Gladyshev, G. S. Kalachova // Food Chemistry. - 2007. - Vol. 104, Is. 4. - P1353-1358, DOI 10.1016/j.foodchem.2007.01.050 . - ISSN 0308-8146
Кл.слова (ненормированные):
Essential polyunsaturated fatty acids -- Grayling -- Seasonal dynamics -- docosahexaenoic acid -- fatty acid -- icosapentaenoic acid -- polyunsaturated fatty acid -- article -- bioaccumulation -- molecular dynamics -- muscle -- quantitative analysis -- Russian Federation -- water temperature -- Thymallus arcticus
Аннотация: Seasonal variations of fatty acid contents in muscle tissue of one of the main food fish species in Siberian rivers, grayling, Thymallus arcticus, were studied over 3 years. Under a comparatively low range of water temperature variations, spawning appeared to be the main cause of seasonal changes in contents of quantitatively prominent and essential fatty acids in fish filets. In general, fish accumulated essential polyunsaturated fatty acids (PUFA), such as eicosapentaenoic (EPA) and docosahexaenoic (DHA), in their muscle tissue before reproductive seasons and then the PUFA seemed to be transferred into gonads during their formation. Hard roe of Siberian grayling had 3-4 times higher PUFA contents, than had that of the muscle tissue. The fish species, T. arcticus, was found to be a valuable source of the essential PUFA, including EPA and DHA, for human diet. В© 2007 Elsevier Ltd. All rights reserved.

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

Доп.точки доступа:
Sushchik, N.N.; Gladyshev, M.I.; Kalachova, G.S.

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18.

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 / M. I. Gladyshev [et al.] // Doklady Biological Sciences. - 2005. - Vol. 403, Is. 1-6. - P267-268, DOI 10.1007/s10630-005-0107-9 . - ISSN 0012-4966
Кл.слова (ненормированные):
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

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk State Agrarian University, Krasnoyarsk, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, 660062, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gladyshev, M.I.; Sushchik, N.N.; Kravchuk, E.S.; Ivanova, E.A.; Ageev, A.V.; Kalacheva, G.S.

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19.

Saline rivers provide arid landscapes with a considerable amount of biochemically valuable production of chironomid (Diptera) larvae / T. D. Zinchenko [et al.] // Hydrobiologia. - 2014. - Vol. 722, Is. 1. - P115-128, DOI 10.1007/s10750-013-1684-5 . - ISSN 0018-8158
Кл.слова (ненормированные):
Chironomid larvae -- Essential fatty acids -- Saline rivers -- Secondary production
Аннотация: Saline rivers are supposed to be 'hot spots' of high biological productivity in arid landscapes. To test this, we quantified the production of chironomid larvae, because river production is known to be transferred to arid landscapes primarily by birds fed on these larvae. In addition, we studied the potential biochemical quality of the larvae for birds based on the essential highly unsaturated fatty acid (HUFA) contents in their biomass. We studied species composition and measured production of chironomid larvae in two saline rivers (Volgograd region, Russia). We also evaluated the fatty acid composition and contents of the dominant taxa and estimated the flux of HUFA from the studied saline rivers to land via chironomid potential emergence. Average monthly production of chironomids measured for only 1 month, August, was quite comparable to annual production in some freshwater rivers. All the dominant chironomid larvae had comparatively high essential eicosapentaenoic acid contents, especially Cricotopus salinophilus, which showed the highest value, reported for Chironomidae. The monthly flux of HUFA from the studied rivers to land due to the chironomid potential emergence was roughly comparable to the global average estimation of annual water-land HUFA export via emerging insects. В© 2013 Springer Science+Business Media Dordrecht.

Scopus
Держатели документа:
Institute of Ecology of the Volga River Basin, Russian Academy of Sciences, st. Komzina 10, Togliatti, 445003, Russian Federation
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, 660041, Russian Federation
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Zinchenko, T.D.; Gladyshev, M.I.; Makhutova, O.N.; Sushchik, N.N.; Kalachova, G.S.; Golovatyuk, L.V.

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20.

Radioactive particles in the Yenisei River floodplain (Russia): Characterization, leaching and potential effects in the environment / A. Bolsunovsky, M. Melgunov // J. Environ. Radioact. - 2019. - Vol. 208-209, DOI 10.1016/j.jenvrad.2019.105991 . - ISSN 0265-931X
Кл.слова (ненормированные):
Fuel particles -- Incidents at plutonium reactors -- Leaching experiments -- Low doses -- Plant bioassays -- The Yenisei river floodplain -- Aquatic ecosystems -- Aquatic organisms -- Banks (bodies of water) -- Floods -- Fuel gages -- Fuels -- Gamma rays -- Leaching -- Plutonium -- Radiation effects -- Radioactivity -- Radioisotopes -- Flood plains -- Fuel particles -- Leaching experiments -- Low dose -- Plant bioassays -- Rivers -- Elodea canadensis
Аннотация: The operation of the Mining-and-Chemical Combine (MCC), the largest producer of weapons-grade plutonium in Russia, has resulted in radioactive contamination of the Yenisei River floodplain. Investigations carried out in Novosibirsk and Krasnoyarsk institutes have shown that the floodplain of the Yenisei downstream of the MCC is contaminated by radioactive particles (RP) of various types and activities. Analytical characterization of the RP showed that most of them were fuel particles, which were carried into the Yenisei after incidents at the MCC reactors. The plutonium and caesium isotope ratios (238Pu/239,240Pu; 137Cs/134Cs) vary substantially between the particles, indicating different source terms and time intervals when the RP were formed. In addition to fuel RP, there were particles that contained activation radionuclides. The experiment on dissolution of RP using the model solution (the simulated stomach fluid) showed different cumulative extractions of radionuclides from the particles: 60Co and 137Cs extractions were the lowest, the extracted fractions of europium and americium isotopes were the largest, and plutonium occupied an intermediate position. High concentrations of radionuclides in RP are sources of exposure of organisms in aquatic and terrestrial ecosystems to low radiation doses. The plant bioassays of the effects of ?-radiation from RP showed the effect of low doses of ?-radiation on growth parameters of aquatic plant Elodea canadensis growing in the Yenisei River floodplain. The presence of RP from different sources in the Yenisei River floodplain makes this region a unique site for studying environmental effects of the particles. © 2019 Elsevier Ltd

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Держатели документа:
Institute of Biophysics Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Institute of Geology and Mineralogy Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russian Federation

Доп.точки доступа:
Bolsunovsky, A.; Melgunov, M.

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