Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers
Analysis of organic and inorganic carbon (DOC and DIC, respectively), pH, Na, K, Ca, Mg, Cl, SO 4 and Si in ~ 100 large and small rivers (< 10 to ≤ 150 000 km 2 ) of western Siberia sampled in winter, spring, and summer over a more than 1500 km latitudinal gradient allowed establishing main envir...
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ftdoajarticles:oai:doaj.org/article:6eb6a264e0d2443499d36149bcbba356 2023-05-15T17:56:38+02:00 Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers O. S. Pokrovsky R. M. Manasypov S. Loiko L. S. Shirokova I. A. Krickov B. G. Pokrovsky L. G. Kolesnichenko S. G. Kopysov V. A. Zemtzov S. P. Kulizhsky S. N. Vorobyev S. N. Kirpotin 2015-11-01T00:00:00Z https://doi.org/10.5194/bg-12-6301-2015 https://doaj.org/article/6eb6a264e0d2443499d36149bcbba356 EN eng Copernicus Publications http://www.biogeosciences.net/12/6301/2015/bg-12-6301-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-6301-2015 https://doaj.org/article/6eb6a264e0d2443499d36149bcbba356 Biogeosciences, Vol 12, Iss 21, Pp 6301-6320 (2015) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/bg-12-6301-2015 2022-12-31T05:35:02Z Analysis of organic and inorganic carbon (DOC and DIC, respectively), pH, Na, K, Ca, Mg, Cl, SO 4 and Si in ~ 100 large and small rivers (< 10 to ≤ 150 000 km 2 ) of western Siberia sampled in winter, spring, and summer over a more than 1500 km latitudinal gradient allowed establishing main environmental factors controlling the transport of river dissolved components in this environmentally important region, comprising continuous, discontinuous, sporadic and permafrost-free zones. There was a significant latitudinal trend consisting in a general decrease in DOC, DIC, SO 4 , and major cation (Ca, Mg, Na, K) concentration northward, reflecting the interplay between groundwater feeding (detectable mostly in the permafrost-free zone, south of 60° N) and surface flux (in the permafrost-bearing zone). The northward decrease in concentration of inorganic components was strongly pronounced both in winter and spring, whereas for DOC, the trend of concentration decrease with latitude was absent in winter, and less pronounced in spring flood than in summer baseflow. The most significant decrease in K concentration from the southern (< 59° N) to the northern (61–67° N) watersheds occurs in spring, during intense plant litter leaching. The latitudinal trends persisted for all river watershed size, from < 100 to > 10 000 km 2 . Environmental factors are ranked by their increasing effect on DOC, DIC, δ 13 C DIC , and major elements in western Siberian rivers as follows: watershed area < season < latitude. Because the degree of the groundwater feeding is different between large and small rivers, we hypothesize that, in addition to groundwater feeding of the river, there was a significant role of surface and shallow subsurface flow linked to plant litter degradation and peat leaching. We suggest that plant-litter- and topsoil-derived DOC adsorbs on clay mineral horizons in the southern, permafrost-free and discontinuous/sporadic permafrost zone but lacks the interaction with minerals in the continuous ... Article in Journal/Newspaper permafrost Siberia Directory of Open Access Journals: DOAJ Articles Biogeosciences 12 21 6301 6320 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 O. S. Pokrovsky R. M. Manasypov S. Loiko L. S. Shirokova I. A. Krickov B. G. Pokrovsky L. G. Kolesnichenko S. G. Kopysov V. A. Zemtzov S. P. Kulizhsky S. N. Vorobyev S. N. Kirpotin Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
Analysis of organic and inorganic carbon (DOC and DIC, respectively), pH, Na, K, Ca, Mg, Cl, SO 4 and Si in ~ 100 large and small rivers (< 10 to ≤ 150 000 km 2 ) of western Siberia sampled in winter, spring, and summer over a more than 1500 km latitudinal gradient allowed establishing main environmental factors controlling the transport of river dissolved components in this environmentally important region, comprising continuous, discontinuous, sporadic and permafrost-free zones. There was a significant latitudinal trend consisting in a general decrease in DOC, DIC, SO 4 , and major cation (Ca, Mg, Na, K) concentration northward, reflecting the interplay between groundwater feeding (detectable mostly in the permafrost-free zone, south of 60° N) and surface flux (in the permafrost-bearing zone). The northward decrease in concentration of inorganic components was strongly pronounced both in winter and spring, whereas for DOC, the trend of concentration decrease with latitude was absent in winter, and less pronounced in spring flood than in summer baseflow. The most significant decrease in K concentration from the southern (< 59° N) to the northern (61–67° N) watersheds occurs in spring, during intense plant litter leaching. The latitudinal trends persisted for all river watershed size, from < 100 to > 10 000 km 2 . Environmental factors are ranked by their increasing effect on DOC, DIC, δ 13 C DIC , and major elements in western Siberian rivers as follows: watershed area < season < latitude. Because the degree of the groundwater feeding is different between large and small rivers, we hypothesize that, in addition to groundwater feeding of the river, there was a significant role of surface and shallow subsurface flow linked to plant litter degradation and peat leaching. We suggest that plant-litter- and topsoil-derived DOC adsorbs on clay mineral horizons in the southern, permafrost-free and discontinuous/sporadic permafrost zone but lacks the interaction with minerals in the continuous ... |
format |
Article in Journal/Newspaper |
author |
O. S. Pokrovsky R. M. Manasypov S. Loiko L. S. Shirokova I. A. Krickov B. G. Pokrovsky L. G. Kolesnichenko S. G. Kopysov V. A. Zemtzov S. P. Kulizhsky S. N. Vorobyev S. N. Kirpotin |
author_facet |
O. S. Pokrovsky R. M. Manasypov S. Loiko L. S. Shirokova I. A. Krickov B. G. Pokrovsky L. G. Kolesnichenko S. G. Kopysov V. A. Zemtzov S. P. Kulizhsky S. N. Vorobyev S. N. Kirpotin |
author_sort |
O. S. Pokrovsky |
title |
Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers |
title_short |
Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers |
title_full |
Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers |
title_fullStr |
Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers |
title_full_unstemmed |
Permafrost coverage, watershed area and season control of dissolved carbon and major elements in western Siberian rivers |
title_sort |
permafrost coverage, watershed area and season control of dissolved carbon and major elements in western siberian rivers |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/bg-12-6301-2015 https://doaj.org/article/6eb6a264e0d2443499d36149bcbba356 |
genre |
permafrost Siberia |
genre_facet |
permafrost Siberia |
op_source |
Biogeosciences, Vol 12, Iss 21, Pp 6301-6320 (2015) |
op_relation |
http://www.biogeosciences.net/12/6301/2015/bg-12-6301-2015.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 1726-4170 1726-4189 doi:10.5194/bg-12-6301-2015 https://doaj.org/article/6eb6a264e0d2443499d36149bcbba356 |
op_doi |
https://doi.org/10.5194/bg-12-6301-2015 |
container_title |
Biogeosciences |
container_volume |
12 |
container_issue |
21 |
container_start_page |
6301 |
op_container_end_page |
6320 |
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1766164867262185472 |