Classification of climates and climatic regionalization of the West-Siberian plain

Trofimova, I. E.; Balybina, A. S.

doi:10.1134/s1875372814020024

Cited by 28 publications

(13 citation statements)

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“…We believe that this corresponds to a progressive increase in the thickness of the active layer that controls the degree of peat and mineral particles leaching from the soil profile to the river. The thickness of this layer increases from spring to autumn, and more importantly, it moves northward during this period (Trofimova and Balybina, 2014). The enhanced mobilization of nutrients at the "hot spot" of permafrost thaw in frozen peat landscapes was recently demonstrated on a local scale in western Siberia (Loiko et al, 2017).…”

Section: A Maximum Of C and N In The Isolated And Sporadic Permafrostmentioning

confidence: 92%

“…The rivers were sampled in the WSL, a huge (> 2 million km 2 ) peatland and forest zone situated in the taiga forest, forest-tundra and tundra zone. The position of biomes follows the decrease of mean annual air temperature (MAAT) from −0.5 • C in the south to −9.5 • C in the north (Trofimova and Balybina, 2014). The annual precipitation increases from 550 mm at the latitude of Tomsk to 650-700 mm at Noyabrsk and further decreases to 600 mm at the lower reaches of the Taz River.…”

Section: Study Site and Methodsmentioning

confidence: 99%

“…Further, the potentially increased transport of P and N may significantly change primary productivity in riverine ecosystems (Wrona et al, 2016;McClelland et al, 2007), thereby impeding the rigorous predictions of climate change's impact on Arctic terrestrial-aquatic ecosystems. Despite significant efforts in characterizing the fluxes, chemistry and origin of particulate organic matter (POM) in large Arctic rivers (Lobbes et al, 2000;Dittmar and Kattner, 2003;Unger et al, 2005;Guo et al, 2004;Guo and Macdonald, 2006;Gladyshev et al, 2015;Emmerton et al, 2008;McClelland et al, 2016;Gareis and Lesack, 2017), these studies do not allow for the assessment of mechanisms of POM generation in the watershed. In particular, the role of the size of the river watershed and its landscape (physio-geographical) parameters are still poorly known.…”

Section: Introductionmentioning

confidence: 99%

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Riverine particulate C and N generated at the permafrost thaw front: case study of western Siberian rivers across a 1700 km latitudinal transect

et al. 2018

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Abstract. In contrast to numerous studies on the dynamics of dissolved (<0.45 µm) elements in permafrost-affected high-latitude rivers, very little is known of the behavior of river suspended (>0.45 µm) matter (RSM) in these regions. In order to test the effect of climate, permafrost and physio-geographical landscape parameters (bogs, forest and lake coverage of the watershed) on RSM and particulate C, N and P concentrations in river water, we sampled 33 small and medium-sized rivers (10–100 000 km2 watershed) along a 1700 km N–S transect including both permafrost-affected and permafrost-free zones of the Western Siberian Lowland (WSL). The concentrations of C and N in RSM decreased with the increase in river watershed size, illustrating (i) the importance of organic debris in small rivers which drain peatlands and (ii) the role of mineral matter from bank abrasion in larger rivers. The presence of lakes in the watershed increased C and N but decreased P concentrations in the RSM. The C:N ratio in the RSM reflected the source from the deep soil horizon rather than surface soil horizon, similar to that of other Arctic rivers. This suggests the export of peat and mineral particles through suprapermafrost flow occurring at the base of the active layer. There was a maximum of both particulate C and N concentrations and export fluxes at the beginning of permafrost appearance, in the sporadic and discontinuous zone (62–64∘ N). This presumably reflected the organic matter mobilization from newly thawed organic horizons in soils at the active latitudinal thawing front. The results suggest that a northward shift of permafrost boundaries and an increase in active layer thickness may increase particulate C and N export by WSL rivers to the Arctic Ocean by a factor of 2, while P export may remain unchanged. In contrast, within a long-term climate warming scenario, the disappearance of permafrost in the north, the drainage of lakes and transformation of bogs to forest may decrease C and N concentrations in RSM by 2 to 3 times.

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Section: A Maximum Of C and N In The Isolated And Sporadic Permafrostmentioning

confidence: 92%

Section: Study Site and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Riverine particulate C and N generated at the permafrost thaw front: case study of western Siberian rivers across a 1700 km latitudinal transect

et al. 2018

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“…Minimal temperature is -59°C. Annual precipitation is 258 mm according to Trofimova and Balybina (2014) and weather archives of Popov Meteorological Station (URL: http://rp5. ru/ data obtained 10.02.2017).…”

Section: Introductionmentioning

confidence: 99%

Soil polychemical contamination on Beliy Island as key background and reference plot for Yamal region

Abakumov¹,

Shamilishviliy²,

Yurtaev³

2017

Polish Polar Research

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Background concentrations of main trace elements and polycyclic aromatic hydrocarbons (PAHs) were investigated in pristine soils of the Beliy Island situated in the Kara Sea, Yamal autonomous region, North-West Siberia, Russia. Belyi Island is considered as reference landscpae for further investigation of soil polychemical contamination of the Yamal region. Three plots with different functional load (mature ecosystem, occasionally and permanently affected plots) were investigated with aim to evaluate the trend of long term polychemical effect on Stagnic Cryosols -benchmark soil type of the Yamal region. Accumulation of trace elements was not fixed in all soils investigated due to absence of direct sources of heavy metals on the territory of the Beliy Island. At the same time, there were essential alterations of PAHs fractional composition and content due to pronounced accumulation of the petroleum products combustion in the vicinity of the permanent meteorological station and former seasonal field base. The most intensive and statistically significant accumulation was noted for phenanthrene, anthracene, benzo[k]fluoranthene and benzo [a]pyrene. This indicates accumulation of the PAHs in soils, affected by the anthropogenic activity on the meteorological station. The most pronounced differences were revealed for the superficial layer of 0-5 cm. Deeper horizons of soil did not show accumulation of contaminants. Data obtained can be used for organization of further monitoring of contamination of soils and landscapes in Yamal as developing and industrial region.

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Section: A Maximum Of C and N In The Isolated And Sporadic Permafrostmentioning

confidence: 92%

Response to Reviewer No 1

Pokrovsky¹

2018

Preprint

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This is the published version of a paper published in Biogeosciences.Citation for the original published paper (version of record):Krickov, I V., Lim, A G., Manasypov, R M., Loiko, S V., Riverine particulate C and N generated at the permafrost thaw front: case study of western Siberian rivers across a 1700km latitudinal transect Biogeosciences, 15(22): 6867-6884 https://doi.org/10. 5194/bg-15-6867-2018 Access to the published version may require subscription. N.B. When citing this work, cite the original published paper. Permanent link to this version:Abstract. In contrast to numerous studies on the dynamics of dissolved ( < 0.45 µm) elements in permafrost-affected highlatitude rivers, very little is known of the behavior of river suspended (> 0.45 µm) matter (RSM) in these regions. In order to test the effect of climate, permafrost and physiogeographical landscape parameters (bogs, forest and lake coverage of the watershed) on RSM and particulate C, N and P concentrations in river water, we sampled 33 small and medium-sized rivers (10-100 000 km 2 watershed) along a 1700 km N-S transect including both permafrost-affected and permafrost-free zones of the Western Siberian Lowland (WSL). The concentrations of C and N in RSM decreased with the increase in river watershed size, illustrating (i) the importance of organic debris in small rivers which drain peatlands and (ii) the role of mineral matter from bank abrasion in larger rivers. The presence of lakes in the watershed increased C and N but decreased P concentrations in the RSM. The C : N ratio in the RSM reflected the source from the deep soil horizon rather than surface soil horizon, similar to that of other Arctic rivers. This suggests the export of peat and mineral particles through suprapermafrost flow occurring at the base of the active layer. There was a maximum of both particulate C and N concentrations and export fluxes at the beginning of permafrost appearance, in the sporadic and discontinuous zone (62-64 • N). This presumably reflected the organic matter mobilization from newly thawed organic horizons in soils at the active latitudinal thawing front. The results suggest that a northward shift of permafrost boundaries and an increase in active layer thickness may increase particulate C and N export by WSL rivers to the Arctic Ocean by a factor of 2, while P export may remain unchanged. In contrast, within a long-term climate warming scenario, the disappearance of permafrost in the north, the drainage of lakes and transformation of bogs to forest may decrease C and N concentrations in RSM by 2 to 3 times.

show abstract

Classification of climates and climatic regionalization of the West-Siberian plain

Cited by 28 publications

References 2 publications

Riverine particulate C and N generated at the permafrost thaw front: case study of western Siberian rivers across a 1700 km latitudinal transect

Riverine particulate C and N generated at the permafrost thaw front: case study of western Siberian rivers across a 1700 km latitudinal transect

Soil polychemical contamination on Beliy Island as key background and reference plot for Yamal region

Response to Reviewer No 1

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