Markers of Soil Organic Matter Transformation in Permafrost Peat Mounds of Northeastern Europe

Пастухов, А. В.; Knoblauch, Christian; Yakovleva, E. V.; Kaverin, Dmitry

doi:10.1134/s1064229318010131

Cited by 7 publications

(6 citation statements)

References 46 publications

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“…However, the results on the contents of alkanes in low-moor peat presented by Pastukhov et al (2018) present similar conclusions to the data which were obtained from the Zapadź peatland. The peatlands in north-eastern Europe and on the Zapadź site were dominated by long-chain n-alkane homologues (C 27 , C 29 ) whose bioproducers are higher vascular plants.…”

Section: Gas Chromatography-mass Spectrometrysupporting

confidence: 88%

“…The interpretation of the results on n-alkane content in high-moor peat with regard to low-moor peat is open to debate if based on data in the literature. On account of the small number of studies on biomarkers occurring in transitional and lowmoor peat, some authors use the same markers as occur with high-moor peat (Andersson et al 2011;Andersson and Meyers 2012;Pastukhov et al 2018).…”

Section: Gas Chromatography-mass Spectrometrymentioning

confidence: 99%

“…There has been only sporadic use of n-alkane analysis to monitor environmental change in low-moor peatlands, the most prevalent peatlands in the world, and a permafrost area. An example of this type of study is a study of peatlands in the tundra zone (Bol'shezemelskaya Tundra, Russia) by Pastukhov et al (2018). In response to this, our objective was to reconstruct the vegetation changes and changes in the water table levels in a peatland located in the valley of a large river.…”

Section: Introductionmentioning

confidence: 99%

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Impacts of vegetation and palaeohydrological changes on the n-alkane composition of a Holocene peat sequence from the Upper Vistula Valley (southern Poland)

2021

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Purpose The analysis of n-alkanes in palaeoenvironmental studies of peatlands is mainly limited to ombrogenous peatlands which are a rare feature in the environment. Using n-alkane and plant macrofossil analysis, we have tracked changes in the environment in the valley of a large Central European river. We tested the possibilities for applying such studies to low-moor bogs which are the most commonly occurring type of bog in the world. Materials and methods Representative peat samples were taken from two profiles in a peatland located in the Vistula Valley (southern Poland), and they were analysed for the occurrence and distribution of biomarkers. The distribution of n-alkanes was determined using gas chromatography-mass spectrometry (GC–MS). The botanical composition of the samples was determined by analysis of plant macrofossil remains, and the degree of peat decomposition was also determined. Results and discussion Samples of low-moor peat were characterised by a prevalence of medium- and long-chain n-alkane homologues, which is typical for higher plants. The variable values of the CPI, CPI (25–31), and the C23/C25 ratio have provided information on the stages of formation of the Zapadź bog. The source of n-alkane differentiation is vegetation change related to palaeohydrological dynamics and palaeoenvironmental conditions within the peatland. Conclusions We have shown that analysis of n-alkanes can be successfully used in low-moor bogs as a complement to palaeobotanical and palaeozoological methods. The bringing together of these types of research enables changes in the ecosystems of large river valleys to be tracked.

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Section: Gas Chromatography-mass Spectrometrysupporting

confidence: 88%

Section: Gas Chromatography-mass Spectrometrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impacts of vegetation and palaeohydrological changes on the n-alkane composition of a Holocene peat sequence from the Upper Vistula Valley (southern Poland)

2021

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“…In terms of the content of 2–4 nuclear PAH, the peat cores of the Kolva key site are strongly distinguished. The site Kolva (profiles K 1 and K 2) differs from all other key areas, indicating the unique features of the peat massifs of this territory associated with the specificity of soil formation processes, which were described in detail by us earlier 60 . Significant differences in 5–6 nuclear PAH concentrations are shown in the West Siberian and East European key sites.…”

Section: Resultsmentioning

confidence: 70%

“…Previous studies revealed the heterogeneity of the composition and properties of peat organic matter both in the active layer and permafrost 59 , 60 , indicating different paleogeographic conditions of their formation 23 , 61 .…”

Section: Resultsmentioning

confidence: 98%

Polycyclic aromatic hydrocarbons in permafrost peatlands

Пастухов

Loiko

Kaverin

2021

Sci Rep

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The concentrations of 15 individual PAHs in 93 peat cores have been determined by using high-performance liquid chromatography methods. In the profile the qualitative and quantitative composition of PAHs was non-uniform estimated in a wide range: from 112 to 3673 ng/g with mean 1214 ± 794 ng/g. Among 15 identified individual PAHs, the main contribution to their total amount was made by heavy highly condensed PAHs in the Eastern European peat plateaus, in particular, 6-nuclear benzo[ghi]perylene (1021 ± 707 ng/g), whereas in West Siberian permafrost peatlands, light PAHs were dominating, mostly naphthalene and phenanthrene (211 ± 87 and 64 ± 25 ng/g, respectively). The grass-equisetum peat contained the maximum of heavy PAHs and the dwarf shrub-grass—the minimum. In grass-dwarf shrub, grass-moss and moss peat, the share of 2-nuclear PAHs was most significant: naphthalene and fluorene, as well as 6-nuclear benzo[ghi]perylene. The presence of benzo[ghi]perylene in the entire peat strata, including its permafrost layer, was a marker of the anaerobic conditions that persisted throughout the Holocene and they were necessary for the synthesis of this compound.

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Development of permafrost-affected peatlands in the southern limit of the European Russian cryolithozone and their vulnerability to future warming

Pastukhov

Knoblauch

Beer

et al. 2022

Science of The Total Environment

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Markers of Soil Organic Matter Transformation in Permafrost Peat Mounds of Northeastern Europe

Cited by 7 publications

References 46 publications

Impacts of vegetation and palaeohydrological changes on the n-alkane composition of a Holocene peat sequence from the Upper Vistula Valley (southern Poland)

Impacts of vegetation and palaeohydrological changes on the n-alkane composition of a Holocene peat sequence from the Upper Vistula Valley (southern Poland)

Polycyclic aromatic hydrocarbons in permafrost peatlands

Development of permafrost-affected peatlands in the southern limit of the European Russian cryolithozone and their vulnerability to future warming

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