scholarly journals Using of zooplankton indicators in assessing the quality of waters in two lakes in the Gulf of Finland basin

2017 ◽  
Vol 24 (3) ◽  
pp. 93-100
Author(s):  
Dmitry Kulakov
Keyword(s):  
Gulf Of Finland ◽  
Quality Of Waters ◽  
The Gulf Of Finland

scholarly journals Assessment of the quality of freshwater ecosystems based on the functional condition of bivalved mollusks

2019 ◽  
Vol 46 (2) ◽  
pp. 214-224
Author(s):  
S. V. Kholodkevich ◽  
A. N. Sharov ◽  
G. M. Chuiko ◽  
T. V. Kuznetsova ◽  
M. V. Gapeeva ◽  
...  
Keyword(s):  
Functional State ◽  
Rybinsk Reservoir ◽  
Functional Condition ◽  
Freshwater Ecosystems ◽  
Gulf Of Finland ◽  
Bivalve Mollusks ◽  
Accumulation Of Metals ◽  
The Rybinsk Reservoir ◽  
The Gulf Of Finland

An approach is proposed for ranking the quality of freshwater ecosystems by the state of bivalve mollusks living in them. Cardioactivity indicators and accumulation of metals in the tissues of the mollusks from various waters of the eastern part of the Gulf of Finland and the Rybinsk Reservoir were used to characterize the ecosystems, and an original hyperosmotic test was used to analyze the functional state of the mollusks.

Zooplankton of Koporskaya Bay of the Gulf of Finland in the Zone of the Influence of the Leningrad NPS

2014 ◽  
Vol 50 (4) ◽  
pp. 3-14
Author(s):  
M. Ye. Makushenko ◽  
D. V. Kulakov ◽  
Ye. A. Vereshchagina
Keyword(s):  
Gulf Of Finland ◽  
The Gulf Of Finland

Characteristics and Structure of the Cumulonimbus Cloud with Waterspout over the Gulf of Finland

2020 ◽  
Vol 45 (9) ◽  
pp. 607-614
Author(s):  
V. B. Popov ◽  
A. A. Sin’kevich ◽  
J. Yang ◽  
Yu. P. Mikhailovskii ◽  
M. L. Toropova ◽  
...  
Keyword(s):  
Gulf Of Finland ◽  
The Gulf Of Finland ◽  
Cumulonimbus Cloud

To the question of the validity of the species Chromadorita arctica Gagarin, 1999 (Nematoda, Chromadorida)

2019 ◽  
Vol 28 (1) ◽  
pp. 194-196
Author(s):  
S.Ya. Tsalolikhin
Keyword(s):  
Gulf Of Finland ◽  
Novaya Zemlya ◽  
The Gulf Of Finland

The synonymization of species Chromadorita arctica Gagarin, 1999, syn. nov. from Novaya Zemlya and Ch. fennica Jensen, 1979 from the Gulf of Finland is proposed.

PROBLEM OF HEAVY METAL SURFACE SEDIMENT CONTAMINATION IN THE EASTERN GULF OF FINLAND

2017 ◽  
Author(s):  
N Derugina ◽  
N Derugina ◽  
А Grigoriev ◽  
A Grigoriev ◽  
Дарья Рябчук ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Bottom Sediments ◽  
Late Holocene ◽  
Sediment Contamination ◽  
Gulf Of Finland ◽  
Slow Decline ◽  
Contamination Levels ◽  
The Gulf Of Finland ◽  
Neva Bay

This project defines the pre-industrial quantities of heavy metals in sediment sequences of the Late Holocene from the Eastern Gulf of Finland. A comparative analysis reveals differences and similarities in the current concentrations of heavy metals in bottom sediments and pre-industrial levels. It is found that the maximum concentrations of heavy metals in the bottom sediments of the Gulf of Finland and Neva Bay occurred in the period of 1950-1990. Since the 1990s, the trend has been a slow decline in the contamination levels; however, the concentrations of some heavy metals in bottom sediments remain high.

AN ARTIFICIAL BEACH AS A MEANS FOR SEA COAST PROTECTION FROM STORM SURGES (BY THE EXAMPLE OF THE EASTERN GULF OF FINLAND)

2017 ◽  
Author(s):  
Igor Leontyev ◽  
Igor Leontyev ◽  
Tatiana Akivis ◽  
Tatiana Akivis
Keyword(s):  
Storm Surges ◽  
Gulf Of Finland ◽  
Beach Sand ◽  
Medium Sand ◽  
Material Loss ◽  
Beach Width ◽  
Intense Storm ◽  
The Gulf Of Finland ◽  
Beach Volume ◽  
Sea Coast

A model of an artificial beach is suggested for protection of coasts under erosion due to intense storm surges. It is shown that the coarser beach sand results in decrease of the beach width and growth of nourishment volume. At the same time relative material loss due to long-shore sediment transport diminishes too. The model has been applied to three sections of the coasts of Kurortny district of S.-Petersburg (eastern part of the Gulf of Finland). It recommends medium sand for the beaches construction. Modeling of extreme storms effect shows only minor deformations for designed beach profiles. For the beaches more than 1 km long even in 30-50 years more than a half of the initial beach volume conserves without additional nourishment.

Sign in / Sign up

Export Citation Format

Share Document