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Component elements of the carbon cycle in the middle and lower Yenisei River [Text] / A. P. Tolomeev [et al.] // Contemp. Probl. Ecol. - 2014. - Vol. 7, Is. 4. - P489-500, DOI 10.1134/S1995425514040118. - Cited References: 41. - This work was supported by a grant from the government of the Russian Federation for support of scientific research activities implemented under the supervision of leading scientists at Russian institutions of higher education (no. 11.G34.31.0014) and by project G-1 of the Siberian Federal University carried out according to Federal Program of the Ministry of Education and Science of the Russian Federation. . - ISSN 1995-4255. - ISSN 1995-4263

РУБ Ecology
Рубрики:
DISSOLVED ORGANIC-MATTER
   DCMU-FLUORESCENCE METHOD
   ARCTIC-OCEAN
   KARA SEA
   OB
   RESPIRATION
   ECOSYSTEM
   SIBERIA
   FLUXES
   BIOGEOCHEMISTRY
Кл.слова (ненормированные):
Yenisei River -- carbon cycle -- nutrients -- primary production -- respiration -- phytoplankton -- bacterioplankton
Аннотация: An integrated study of the middle and lower Yenisei River was performed in the summer of 2012. It involved monitoring the key elements and ecological processes associated with the carbon cycle of the river ecosystem (the study area is more than 1800 km long). Measurements of the production and destruction processes have shown the failure of the "neutral pipe" hypothesis claiming that any river is a simple drain of carbon from terrestrial ecosystems to the ocean. The Yenisei River is not a purely heterotrophic ecosystem. It also has autotrophic areas, where the primary production of planktonic photosynthesis is higher than respiration (above the Angara River and near the Bolshaya and Malaya Heta rivers). According to the data, the respiration rate of the plankton community in the river depends mostly on the water temperature and the content of inorganic phosphorous that can restrict the amount of organic matter consumed by bacterioplankton.

WOS
Держатели документа:
[Tolomeev, A. P.
Anishchenko, O. V.
Kravchuk, E. S.
Kolmakova, O. V.
Makhutova, O. N.
Kolmakova, A. A.
Kolmakov, V. I.
Trusova, M. Yu
Sushchik, N. N.
Gladyshev, M. I.] Russian Acad Sci, Siberian Branch, Inst Biophys, Krasnoyarsk 660036, Russia
[Kolmakova, O. V.
Glushchenko, L. A.
Kolmakov, V. I.
Sushchik, N. N.
Gladyshev, M. I.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Tolomeev, A.P.; Anishchenko, O.V.; Kravchuk, E.S.; Kolmakova, O.V.; Glushchenko, L.A.; Makhutova, O.N.; Kolmakova, A.A.; Kolmakov, V.I.; Trusova, M.Y.; Sushchik, N.N.; Gladyshev, M.I.; government of the Russian Federation [11.G34.31.0014]; Siberian Federal University [G-1]

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Comparative Estimation of the Plutonium (Pu-238,Pu239+240) and Radiocesium (Cs-137) Content in Bottom Sediments and Hydrobionts of the Yenisei River / T. A. Zotina, M. S. Melgunov, D. V. Dementyev, Y. V. Alexandrova // Dokl. Earth Sci. - 2020. - Vol. 492, Is. 2. - P434-437, DOI 10.1134/S1028334X20060227. - 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. . - ISSN 1028-334X. - ISSN 1531-8354

РУБ Geosciences, Multidisciplinary
Рубрики:
OB
Кл.слова (ненормированные):
Fontinalis antipyretica -- Apatania crymophyla -- plutonium -- radiocesium -- zoobenthos
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.

WOS
Держатели документа:
Russian Acad Sci, Krasnoyarsk Sci Ctr, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia.
Russian Acad Sci, Inst Geol & Mineral, Siberian Branch, Novosibirsk 630090, Russia.

Доп.точки доступа:
Zotina, T. A.; Melgunov, M. S.; Dementyev, D., V; Alexandrova, Yu, V; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Krasnoyarsk Regional Foundation for the Support of Scientific and Technological Activities [18-44-240003]

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