Remotely sensed and conventional data fusion for investigation of spatial and temporal variability of hydrophysical fields in the Neva Bay and the eastern part of the Gulf of Finland

2002 ◽  
Author(s):  
L. Sukhacheva ◽  
S. Victorov
Keyword(s):  
Data Fusion ◽  
Temporal Variability ◽  
Remotely Sensed ◽  
Gulf Of Finland ◽  
Spatial And Temporal Variability ◽  
The Gulf Of Finland ◽  
Neva Bay

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.

scholarly journals New data on the flora of Centrophyceae (Bacillariophyta) in the Neva Bay of the Gulf of Finland (Russia)

Algologia ◽  
2021 ◽  
Vol 31 (4) ◽  
pp. 382-389
Author(s):  
S.I. Genkal ◽  
◽  
I.S. Trifonova ◽  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Microscopy Study ◽  
Systematic Position ◽  
Electron Microscopy Study ◽  
Gulf Of Finland ◽  
Centric Diatoms ◽  
The Gulf Of Finland ◽  
Neva Bay ◽  
Scanning Electron

This scanning electron microscopy study of phytoplankton from the Neva Bay and analysis of valve images from S.I. Genkal’s iconotheka have provided new data on centric diatoms of the Neva Bay. Representatives of the genera Aulacoseira scalaris and Stephanodiscus lacustris, new to the flora of the Bay, have been identified. The systematic position and distribution of 14 species and varieties of Centrophyceae from the genera Aulacoseira, Conticribra, Cyclostephanos, Ellerbeckia, Handmannia, Pantocsekiella, Stephanodiscus, Thalassiosira have been refined and specified. The species composition of the class Centrophyceae of the Neva Bay has been expanded. Now it includes 42 species and varieties from 17 genera.

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.

Saint Petersburg Flood Protection Dam as Tool to Solve the Environmental Tasks

2019 ◽  
Vol 828 ◽  
pp. 202-207
Author(s):  
Ludmila Tsvetkova
Keyword(s):  
Field Experiment ◽  
Large Scale ◽  
Flood Protection ◽  
Gulf Of Finland ◽  
Ecological State ◽  
Saint Petersburg ◽  
Large Scale Field ◽  
The Baltic ◽  
The Gulf Of Finland ◽  
Neva Bay

The paper grounds the necessity to conduct the large-scale field experiment on manoeuvring with the floodgates of Saint Petersburg Flood Protection Complex (FPC). The paper presents the results of I-stage experiment and the program of II-stage experiment. The aim of the experiment is the verification of the possibility to manage the hydrological, sanitary and ecological state of the Neva Bay and the eastern part of the Gulf of Finland of the Baltic sea by means of manoeuvring with Flood Protection Complex floodgates. In order to develop the program of field experiment implementation it was necessary to assess the sanitary and ecological state of water ecosystem under present conditions. The assessment was based on monitoring data concerning the certain priority parameters obtained from the selected representative measuring points. On the basis of the analysis of water quality and the state of the Neva Bay and the eastern part of the Gulf of Finland the scheme for manoeuvring with floodgates of the FPC together with the sequence of order of their opening and closing was developed. Recommendations regarding the conditions and terms of conducting the experiment were developed.

scholarly journals The European river lamprey Lampetra fluviatilis (L., 1758) (Petromyzontidae) as a component of the Neva Bay bottom coenoses

2021 ◽  
Vol 4 (2) ◽  
Author(s):  
Nataliya V. Polyakova ◽  
Aleksandr V. Kucheryavyy ◽  
Ekaterina A. Movchan
Keyword(s):  
Gulf Of Finland ◽  
Lampetra Fluviatilis ◽  
Chironomid Larvae ◽  
Macrobenthic Communities ◽  
River Lamprey ◽  
Average Abundance ◽  
First Time ◽  
The Gulf Of Finland ◽  
Neva Bay

The presence of larvae of the European river lamprey Lampetra fluviatilis was reported for the first time from in macrobenthic communities of the Neva Bay of the Gulf of Finland (St. Petersburg, Russia). It has been shown that ammocoetes inhabit several areas, at depths to 12 meters. Apart from ammocoetes, the communities with lamprey larvae contain abundant oligochaetes, bivalves, and less commonly chironomid larvae. At some sites, the number of larvae was up to 80 specimens/m2, while their biomass was over 90% of the total of the community. The abundance of macrozoobenthos in these sites is generally low (average abundance 190 specimens/m2, biomass – 70 g/m2), which is usual in autumn. Intestines of the ammocoetes constantly contained large quantities of diatoms representing common phytoplankton of the Gulf of Finland.

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