Hydrological and Hydrochemical Research of the Mouths of the Small Rivers Flowing to the White Sea in the Winter Low-Water Season of 2019

In the winter low water season in March and the first week of April 2019, complex hydrological and hydrochemical studies were carried out at the mouths of two small rivers of the White Sea catchment basin (the Mudyuga river, which flows into the Dvina Bay, and the Tamitsa river, which flows into the Onega Bay). The results indicate significant differences in the short-period variability of hydrological and hydrochemical parameters in the winter in the studied river mouths compared with the characteristics observed in the tidal estuaries of large and medium rivers, as well as in the mouths of small rivers of the southern seas.

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Mercury in the water of small rivers of the Onega Bay basin of the White Sea

Доклады Академии наук ◽

10.31857/s0869-5652487193-96 ◽

2019 ◽

Vol 487 (1) ◽

pp. 93-96

Author(s):

Yu. A. Fedorov ◽

A. E. Ovsepyan ◽

V. A. Savitskiy ◽

A. A. Zimovets ◽

I. V. Dotsenko

Keyword(s):

Anthropogenic Impact ◽

White Sea ◽

Small Rivers ◽

The White Sea ◽

Natural Conditions ◽

Onega Bay ◽

The One ◽

Dissolved Mercury ◽

The Relationship ◽

Hydrological Phases

The results of the expeditionary studies of the mercury behavior in the water of small rivers of the Onega Bay basin of the White Sea are presented. Priority forms of mercury migration have been identified and the forms of its location along the trunk of the Kyanda River have been calculated. The relationship between the content of various forms of mercury on the one hand and salinity, pH, Eh waters on the other has been analyzed. The influence of hydrological phases on the transformation of inorganic forms of mercury has been revealed. Differences in the levels of content of dissolved mercury and its connection with the salinity in the extuar areas of the marginal filters of the Subarctic rivers in natural conditions and the environment of anthropogenic impact were established.

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Mercury in the Water of Small Rivers of the Onega Bay Basin of the White Sea

Doklady Earth Sciences ◽

10.1134/s1028334x19070109 ◽

2019 ◽

Vol 487 (1) ◽

pp. 804-806

Author(s):

Yu. A. Fedorov ◽

A. E. Ovsepyan ◽

V. A. Savitsky ◽

A. A. Zimovets ◽

I. V. Dotsenko

Keyword(s):

White Sea ◽

Small Rivers ◽

The White Sea ◽

Onega Bay

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Seaweeds of Protected Area of Kandalaksha Bay - the Continuity Phytocenosis Guarantor

KnE Life Sciences ◽

10.18502/kls.v5i1.6085 ◽

2020 ◽

Author(s):

Galina Shklyarevich ◽

Elena Shoshina

Keyword(s):

White Sea ◽

Small Rivers ◽

Biogenic Elements ◽

Coastal Zones ◽

The White Sea ◽

Intertidal Zones ◽

Kandalaksha Bay ◽

Coastal Marine ◽

State Nature Reserve ◽

Favorable Conditions

Ecosystems of the northern seas are highly productive and highly vulnerable requiring continued preservation of the shallow coastal marine zones. Research was conducted in the protected portions of the Kandalaksha Bay Kandalaksha State Nature Reserve of the White Sea. Here there are large shallow water areas among many large and small islands. These areas are characterized by having extensive coastlines with different types of intertidal zones. The highly varied nature of the coastal zones, with the unique conditions found in the different bays, creates peculiar regional and local hydrodynamic conditions. The abundant large and small rivers flowing into these areas provide a continuous flow of biogenic elements. These nutrients when combined with the steady flow of sedimentary material (as substratum for seaweeds) create favorable conditions for development of a variety of marine phytocenosis. Seaweeds of the protected reserve water of the Kandalaksha Bay may be the guarantor of phytocenosis continuity of the White Sea.

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