The carbon cycle of Quebec boreal reservoirs investigated by elemental compositions and isotopic values

Weissenberger, Sebastian; Lucotte, Marc; Canuel, René

doi:10.1007/s10533-011-9687-7

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…The increase of C : N value downstream the Yenisei River took place from temperate (taiga) to north region (tundra). It is worth to note, that similar increase of C : N ratios of POM from temperate to northerly regions was found in Canadian reservoirs (Weissenberger et al 2012).…”

Section: Gladyshev Et Alsupporting

confidence: 75%

“…al. ; Kuzyk et al ; Weissenberger et al ; Lu et al ; Marchese et al ; Pingram et al ), as well as in the interval of the values of δ 13 C of foliage of dominant tree species and soils in this region (Menyailo et al ).…”

Section: Discussionmentioning

confidence: 94%

“…The above tendency of increase of proportion of allochthonous (terrestrial) inputs into POC downstream the Yenisei River, revealed by of C : N ratio, is also confirmed by δ 15 N values. Higher δ 15 N values are explained by higher concentrations of autochthonous POM (Weissenberger et al ), while the smallest values of δ 15 N are measured in riparian vegetation (Cloern et al ). The highest value of δ 15 N in the Yenisei River occurred in section 1, indicating the highest contribution of autochthonous organic matter.…”

Section: Discussionmentioning

confidence: 99%

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Differences in organic matter and bacterioplankton between sections of the largest Arctic river: Mosaic or continuum?

Gladyshev

Kolmakova

Толомеев

et al. 2015

Limnology & Oceanography

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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 ∼1800 km. 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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Section: Gladyshev Et Alsupporting

confidence: 75%