Model estimates of microplastic potential contamination pattern of the eastern Gulf of Finland in 2018

The macrophyte thicket ecosystems of higher aquatic vegetation in the Neva Bay (NB) and Eastern Gulf of Finland (EGoF) perform many important roles, including acting as the habitats, nesting sites and migration sites for aquatic and semi-aquatic birds, creating the specific conditions necessary for the spawning and growth of many species of fish, and taking part in the self-purification of the aquatic ecosystems. Many anthropogenic disturbances, hydraulic works in particular, have a significant negative impact on these macrophyte thicket ecosystems. In recent years, the active growth of a new type of macrophyte thicket has been observed in the NB. This is due to the aftereffects of the construction of the Saint Petersburg Flood Prevention Facility Complex (FPFC). It is quite likely that the total macrophyte thicket area in these waters is currently increasing. In the future, it will be necessary to assess the environmental impacts of the hydraulic works on the macrophyte thicket of the NB and EGoF, taking into account the background processes of the spatiotemporal dynamics of the reed beds in the waters in question. To do this, it will be necessary to carry out a comprehensive study of these ecosystems and identify patterns in their spatial and temporal dynamics. The program of the study has been developed and is currently being implemented by Eco-Express-Service, a St. Petersburg eco-design company.

Download Full-text

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

Zoosystematica Rossica ◽

10.31610/zsr/2019.28.1.194 ◽

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.

Download Full-text

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

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.21610/conferencearticle_58b4316eb2e6d ◽

2017 ◽

Author(s):

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.

Download Full-text

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

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.21610/conferencearticle_58b4315f8fc73 ◽

2017 ◽

Author(s):

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.

Download Full-text

THE ROLE OF REMOTE SENSING DATA FOR COASTAL ZONE MONITIORING AND MANAGEMENT (CASE STUDY FOR THE EAST PART OF GULF OF FINLAND)

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.21610/conferencearticle_58b431552d3e8 ◽

2017 ◽

Author(s):

Nikifor Ostanin ◽

Nikifor Ostanin

Keyword(s):

Remote Sensing ◽

Coastal Zone ◽

Environmental Changes ◽

Rapid Development ◽

Water Environment ◽

Remote Sensing Data ◽

Remotely Sensed ◽

Gulf Of Finland ◽

Coastal Protection ◽

Remotely Sensed Data

Coastal zone of the Eastern Gulf of Finland is subjected to essential natural and anthropogenic impact. The processes of abrasion and accumulation are predominant. While some coastal protection structures are old and ruined the problem of monitoring and coastal management is actual. Remotely sensed data is important component of geospatial information for coastal environment research. Rapid development of modern satellite remote sensing techniques and data processing algorithms made this data essential for monitoring and management. Multispectral imagers of modern high resolution satellites make it possible to produce advanced image processing, such as relative water depths estimation, sea-bottom classification and detection of changes in shallow water environment. In the framework of the project of development of new coast protection plan for the Kurortny District of St.-Petersburg a series of archival and modern satellite images were collected and analyzed. As a result several schemes of underwater parts of coastal zone and schemes of relative bathymetry for the key areas were produced. The comparative analysis of multi-temporal images allow us to reveal trends of environmental changes in the study areas. This information, compared with field observations, shows that remotely sensed data is useful and efficient for geospatial planning and development of new coast protection scheme.

Download Full-text

Marine Litter in the Russian Gulf of Finland and South-East Baltic: Application of Different Methods of Beach Sand Sampling

10.1007/698_2021_746 ◽

2021 ◽

Author(s):

Alexandra A. Ershova ◽

Tatjana R. Eremina ◽

Irina P. Chubarenko ◽

Elena E. Esiukova

Keyword(s):

Gulf Of Finland ◽

Beach Sand ◽

Marine Litter

Download Full-text

Development of the Narva-Jõesuu beach, mineral composition of beach deposits and destruction of the pier, southeastern coast of the Gulf of Finland

Open Geosciences ◽

10.1515/geo-2019-0074 ◽

2019 ◽

Vol 11 (1) ◽

pp. 961-968

Author(s):

Johanna-Iisebel Järvelill

Keyword(s):

Mineral Composition ◽

Mineral Content ◽

Sandy Beach ◽

Heavy Minerals ◽

Gulf Of Finland ◽

Immersion Method ◽

Southeastern Coast ◽

Longshore Drift ◽

Favorable Conditions ◽

The Gulf Of Finland

Abstract Narva-Jõesuu lies at the eastern southeastern coast of the Gulf of Finland, at the Estonian and Russian border. The beach is influenced by heavy winds, waves and drift ice attacks, which are seriously changing the beach. It is the longest sandy beach in Estonia and longshore drift on this beach has induced favorable conditions for the separation of heavy minerals. The aims of the study were to describe the development of the coast, discuss the influence of the destructed pier, and to identify the mineral composition of beach sands. The dynamics of the coast were mainly through comparison with older topographic maps (from the beginning of the 20th century). For mineral analysis the immersion method was applied. The heavy mineral content was found to increase from east to west. The pier was built in Narva-Jõesuu in 1987/88 for protecting the coast, but it is now broken. Consequently, storms are crashing against the coast and erosion of the sandy shore has started. Therefore, the pier should be restored to avoid further beach destruction.

Download Full-text