Trace Elements in Water and Suspended Matter in the Open Part of the White Sea

2018 ◽  
pp. 169-186 ◽  
Author(s):  
Viacheslav V. Gordeev ◽  
Vladimir P. Shevchenko
Keyword(s):  
Trace Elements ◽  
Suspended Matter ◽  
White Sea ◽  
The White Sea ◽  
Open Part ◽  
Trace Elements In Water

Concentrations of Chemical Elements in the Water and Suspended Matter of the Northern Dvina River and the Annual Gross Runoff to the White Sea

2021 ◽  
Vol 500 (1) ◽  
pp. 787-793
Author(s):  
V. V. Gordeev ◽  
V. P. Shevchenko ◽  
V. B. Korobov ◽  
A. I. Kochenkova ◽  
D. P. Starodymova ◽  
...  
Keyword(s):  
Suspended Matter ◽  
White Sea ◽  
Chemical Elements ◽  
The White Sea

Partitioning of trace elements in the process of early diagenesis of bottom sediments in the White Sea

2017 ◽  
Vol 55 (1) ◽  
pp. 144-149 ◽  
Author(s):  
L. L. Demina ◽  
D. F. Bud’ko ◽  
T. N. Alekseeva ◽  
A. N. Novigatsky ◽  
A. S. Filippov ◽  
...  
Keyword(s):  
Trace Elements ◽  
Bottom Sediments ◽  
White Sea ◽  
Early Diagenesis ◽  
The White Sea

The supply of trace elements from the atmosphere recorded in a natural archive by the example of the Ilas ombrotrophic bog in the White Sea drainage basin

2015 ◽  
Vol 465 (2) ◽  
pp. 1272-1277
Author(s):  
V. P. Shevchenko ◽  
O. L. Kusnetsov ◽  
N. V. Politova ◽  
N. E. Zaretskaya ◽  
S. A. Kutenkov ◽  
...  
Keyword(s):  
Trace Elements ◽  
Drainage Basin ◽  
White Sea ◽  
The White Sea ◽  
Ombrotrophic Bog ◽  
Natural Archive

Trace elements in organisms of different trophic groups in the White Sea

Oceanology ◽  
2015 ◽  
Vol 55 (5) ◽  
pp. 730-741 ◽  
Author(s):  
D. F. Budko ◽  
L. L. Demina ◽  
D. M. Martynova ◽  
O. M. Gorshkova
Keyword(s):  
Trace Elements ◽  
White Sea ◽  
Trophic Groups ◽  
The White Sea

scholarly journals Biogeochemistry of the Kem' River estuary, White Sea (Russia)

2005 ◽  
Vol 9 (1/2) ◽  
pp. 57-66 ◽  
Author(s):  
V. R. Shevchenko ◽  
Y. S. Dolotov ◽  
N. N. Filatov ◽  
T. N. Alexeeva ◽  
A. S. Filippov ◽  
...  
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Bottom Sediments ◽  
Suspended Matter ◽  
White Sea ◽  
Outer Part ◽  
River Mouth ◽  
Adjacent Area ◽  
The White Sea

Abstract. The biogeochemistry of the river-sea interface was studied in the Kem' River (the largest river flowing to the White Sea from Karelian coast) estuary and adjacent area of the White Sea onboard the RV "Ekolog" in summer 2001, 2002 and 2003. The study area can be divided into 3 zones: I - the estuary itself, with water depth from 1 to 5m and low salinity in the surface layer (salinity is lower than 0.2psu in the Kem' River and varies from 15 to 20psu in outer part of this zone); II - the intermediate zone with depths from 5 to 10m and salinity at the surface from 16 to 22psu; III - the marine zone with depths from 10 to 29 m and salinity 21-24.5psu. Highest concentrations of the suspended particulate matter (SPM) were registered in the Kem' mouth (5-7mg/l). They sharply decreased to values <1mg/l towards the sea. At beginning of July 2001, particulate organic carbon (POC) concentration in the river mouth was 404µg/l and POC content in total SPM was 5.64%. In the marine part of the studied area the POC concentration varied from 132 to 274µg/l and the POC contents in suspended matter increased to 19-52.6%. These studies show, that the majority of riverborne suspended matter in the Kem' estuary deposits near the river mouth within the 20psu isohaline, where sedimentation of the suspended matter takes place. The role of fresh-water phytoplankton species decreases and the role of marine species increases from the river to sea and the percentage of green algae decreases and the role of diatoms increases. The organic carbon (Corg) to nitrogen (N) ratio (Corg/N) in both suspended matter and bottom sediments decreases from the river to the marine part of the mixing zone (from 8.5 to 6.1 in the suspended matter and from 14.6 to 7.5 in the bottom sediments), demonstrating that content of terrestrial-derived organic matter decreases and content of marine organic matter increases from the river mouth to the sea. The Kem' estuary exhibits a similar character of biogeochemial processes as in the large Arctic estuaries, but the scale of these processes (amount of river input of SPM, POC, area of estuaries) is different.

Postglacial sedimentation in the White Sea (northwestern Russia) reconstructed by integrated microfossil and geochemical data

2019 ◽  
Vol 93 ◽  
pp. 110-123 ◽  
Author(s):  
Dmitry F. Budko ◽  
Liudmila L. Demina ◽  
Ekaterina A. Novichkova ◽  
Yelena I. Polyakova ◽  
Marina D. Kravchishina ◽  
...  
Keyword(s):  
Trace Elements ◽  
Sediment Core ◽  
Barents Sea ◽  
White Sea ◽  
Metal Speciation ◽  
Active Phase ◽  
The Arctic ◽  
Geochemical Data ◽  
The White Sea ◽  
Biogenic Components

AbstractThe White Sea being connected with the Arctic Ocean via the Barents Sea has an influence on its water temperature/salinity structures and biological processes and thus has an indirect impact on the Eurasian climate system. In this work, we have managed to find a correspondence between the climate fluctuation in the Holocene and changes in the geochemical and microfossil properties in the sediment core of the White Sea. For the first time, the element speciation in the sediment core covering about 10,000 cal yr BP period was investigated. The cooling periods (the early Holocene and the Subboreal stage) were characterized by a trend of increase in Si, Al, and Ti contents and Ti/Al ratios, which reflect lithogenous contribution, and decrease in geochemically labile forms of trace elements. A significant increase in the content of organic-bound trace elements and biogenic components (Сorg, BSi, and chlorin) was observed during periods of Holocene climatic optimums. The evident relationship between the metal speciation and indicators of the sedimentation paleoenvironment is observed at the stage of the active phase of early diagenesis after the slowing down of the biogeochemical processes. Down-core decrease in the Mn oxyhydroxide content exhibited a weakening of diagenesis processes at the ~130–150 cm depth.

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