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Differences in organic matter and bacterioplankton between sections of the largest Arctic river: Mosaic or continuum? [Text] / M. I. Gladyshev [et al.] // Limnol. Oceanogr. - 2015. - Vol. 60, Is. 4. - P1314-1331, DOI 10.1002/lno.10097. - Cited References:75. - At the stage of laboratory analyses, calculations, and generalizations, 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). The research cruise was supported by the Attracting Leading Scientists to Russian Educational Institutions Program of the Russian Federation, agreement 11.G34.31.0014. . - ISSN 0024-3590. - ISSN 1939-5590

РУБ Limnology + Oceanography
Рубрики:
FATTY-ACID-COMPOSITION
   KARA SEA
   YENISEI RIVER
   CARBON-CYCLE
Аннотация: We studied biogeochemical characteristics, including organic carbon and nitrogen contents, fatty acid (FA) composition, stable isotope ratios, and primary production in conjunction with species composition of bacterioplankton, using next generation sequencing, in the Yenisei River along a distance similar to 1800km. Basing on FA composition of particulate organic matter (POM) and on other indicators of sources of POM, the river was subdivided into four sections. The upper section 1, situated in mountain region, was the net source of high-quality autochthonous organic matter, produced primarily by diatoms and partly consumed by specialized bacteria species. Section 2 in plain taiga was net sink of high quality allochthonous and autochthonous organic matter, produced by cyanobacteria and green algae. Section 3 was net sink of organic matter, primarily allochthonous, consumed by the specialized species of bacteria. The lowest section 4, situated in tundra, was primarily the conduit of recalcitrant terrestrial organic matter, but also the net source of autochthonous organic matter, produced by diatoms. Biogeochemical traits of sections of the Yenisei River evidently shaped dominant species composition of bacterioplankton of these sections. Regarding the biogeochemical and microbiological data, we concluded that the Yenisei River ecosystem complexly combines features of river mosaic, river continuum, and "neutral pipe."

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

Доп.точки доступа:
Gladyshev, Michail I.; Kolmakova, Olesia V.; Tolomeev, Alexander P.; Anishchenko, Olesia V.; Makhutova, Olesia N.; Kolmakova, Anzhelika A.; Kravchuk, Elena S.; Glushchenko, Larisa A.; Kolmakov, Vladimir I.; Sushchik, Nadezhda N.; Siberian Federal University [6.1089.214/K]; Russian Federal Tasks of Fundamental Research [51.1.1]; Attracting Leading Scientists to Russian Educational Institutions Program of the Russian Federation [11.G34.31.0014]

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