Impact of abiotic factors on the decomposition of litter of peat-forming plants in the incubation experiment

Nikonova, L. G.; Kurganova, I. N.; Gerenyu, V. O. Lopes de; Zhmurin, Vasiliy A.; Golovatskaya, E. A.

doi:10.17223/19988591/46/8

Cited by 10 publications

(2 citation statements)

References 4 publications

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“…This is due to a more active peat decomposition, including the role of lichens [78], which slow down peat accumulation and are absent in the fens. The dwarf shrubs predominate on the mounds where decompose more intensely than sphagnum mosses absolutely dominant in the fens [79]. Constant over-wetting of fens also inhibit peat decomposition [80,81].…”

Section: Other Factors Determining Major and Trace Element Concentratmentioning

confidence: 99%

Microtopography Controls of Carbon and Related Elements Distribution in the West Siberian Frozen Bogs

et al. 2019

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The West Siberian Plain stands out among other boreal plains by phenomenal bogging, which has both global and regional significance. The polygonal bogs, frozen raised-mound bogs, and ombrotrophic ridge-hollow raised bogs are the most extensive bog types in the study area. These bogs commonly show highly diverse surface patterns consisting of mounds, polygons, ridges, hollows, and fens that correspond to the microtopes. Here we investigated how the microtopographic features of the landscape affect the thermal and hydrologic conditions of the soil as well as the nutrient availability and consequently, the dynamics of carbon and related elements. The effect of the surface heterogeneity on the temperature regimes and depths of permafrost is most significant. All of these factors together are reflected, through the feedback system, by a number of hydrochemical parameters of bog waters, such as dissolved organic and inorganic carbon (DOC, DIC), specific conductivity (Cond), SO42–, Cl–, P, Sr, Al, Ti, Cu, V, B, Cs, Cd, Rb, As, U, and rare earth elements (REEs). Among the studied parameters, DOC, SO42, Al, V, and Mn differ most significantly between the convex and concave microforms. The DOC content in bog water is significantly affected by the water residence time, which is significantly longer in soils of mound/polygons than fens. Plants biomass is higher on the mounds which also have some effect that, due to leaching, should lead to more carbon entering into the water of the mounds. It is also shown that atmospheric-dust particles have a noticeable effect on the hydrochemical parameters of bog waters, especially on mounds. The ongoing climate warming will lead to an increase in the fens area and to a decrease in the content of DOC and many elements in bog waters.

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Section: Other Factors Determining Major and Trace Element Concentratmentioning

confidence: 99%

Microtopography Controls of Carbon and Related Elements Distribution in the West Siberian Frozen Bogs

et al. 2019

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“…The rate of decomposition of plant residues depends on the chemical composition of plants and the hydrothermal conditions under which these processes occur [6,[17][18][19]. While humidity and temperature play a leading role in the transformation of plant residues [6,7,17,20], changing weather conditions cause an irregular, intermittent peat-forming process, which is typical for raised bogs that receive their main water supply from precipitation. Climatic changes or anthropogenic impact (drainage) influence the hydrothermal regime of bogs.…”

Section: Introductionmentioning

confidence: 99%

Variability of the Carbon Isotope Composition of Peat-Forming Plants during the Biochemical Transformation

Golovatskaya

Nikonova

Simonova

et al. 2022

Water

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In this study, we describe the variation in δ13C value in the litter of two species of peat-forming plants: Sphagnum fuscum and Eriophorum vaginatum, during 3 years of field decomposition in oligotrophic bog ecosystems drained for the purpose of forest melioration and fire affected and at the stage of post-pyrogenic restoration. Litterbags were periodically retrieved in the autumn and the δ13C value in the residual litter was related to mass loss, litter chemistry, and hydrothermal conditions. Sph. fuscum decomposes much more slowly than E. vaginatum. Low rate of transformation for Sph. fuscum is observed in drained and post-pyrogenic sites, while for E. vaginatum minimal rate of transformation is observed in the native site. During the decomposition of Sphagnum residues, 13C enrichment occurs, and during the decomposition of E. vaginatum, we observed 12C enrichment. The changes in the isotope composition of carbon for investigation sites are insignificant for Sphagnum fuscum, but it was observed for E. vaginatum, the largest of 13C depletion is observed in the drained site (−28.3‰) and minimal in the postpyrogenic site (−27.4‰).

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Polycyclic aromatic compounds in plants and peat in the peatlands of the European part of Russian Arctic

Yakovleva¹,

Габов²,

Василевич³

et al. 2022

Plant Soil

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Impact of abiotic factors on the decomposition of litter of peat-forming plants in the incubation experiment

Cited by 10 publications

References 4 publications

Microtopography Controls of Carbon and Related Elements Distribution in the West Siberian Frozen Bogs

Microtopography Controls of Carbon and Related Elements Distribution in the West Siberian Frozen Bogs

Variability of the Carbon Isotope Composition of Peat-Forming Plants during the Biochemical Transformation

Polycyclic aromatic compounds in plants and peat in the peatlands of the European part of Russian Arctic

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