scholarly journals Hydrocarbons in the sediments offshore of the Curonian Spit (the south–eastern part of the Baltic Sea)

Baltica ◽  
2014 ◽  
Vol 27 (special) ◽  
pp. 31-38 ◽  
Author(s):  
Inna Nemirovskaya ◽  
Marina Ulyanova ◽  
Vadim Sivkov
Keyword(s):  
Organic Carbon ◽  
Baltic Sea ◽  
Organic Carbon Content ◽  
Hazardous Substance ◽  
The Baltic Sea ◽  
Curonian Spit ◽  
Sediment Grain Size ◽  
Polycyclic Aromatic ◽  
Russian Sector ◽  
The Baltic

Data regarding the content and composition of the hydrocarbons (HC) — aliphatic hydrocarbons (AHCs) and polycyclic aromatic hydrocarbons (PAHs) — are presented in comparison with the content of the total organic carbon (Corg) in the bottom sediments in the coastal area of the eastern part of the Gdansk Basin (Russian sector of the Baltic Sea). The HC and PAH distribution in the sediments confirm the dependence of hazardous substance accumulation on the organic carbon content and the sediment grain size of the affected sediment. Bigger concentrations of PAHs were also observed near the Pionersky port. Particular attention was paid to the PAHs content.

Environmental factors affecting recent benthic foraminiferal distribution in the south-eastern Baltic Sea

Baltica ◽  
2020 ◽  
Vol 33 (1) ◽  
pp. 58-70
Author(s):  
Ekaterina Ponomarenko ◽  
Viktor Krechik ◽  
Evgenia Dorokhova
Keyword(s):  
Organic Carbon ◽  
Baltic Sea ◽  
Benthic Foraminifera ◽  
Bottom Water ◽  
Environmental Parameters ◽  
Organic Carbon Content ◽  
The South ◽  
The Baltic Sea ◽  
South Eastern ◽  
The Baltic

The Baltic Sea is characterized by a restricted exchange of deep waters due to permanent stratification of the water column. The aim of the present study is to investigate the distribution of benthic foraminifera in the south-eastern part of the Baltic Sea in relation to environmental parameters. The distribution of benthic foraminifera was analyzed in 26 surface sediment samples collected in the south-eastern part of the Baltic Sea and in the Bornholm Basin during springtime and wintertime 2016. Foraminiferal diversity in the studied region was extremely low. Agglutinated specimens dominated the assemblages and were represented by small-sized individuals which belong to Psammosphaera, Pseudothurammina, Saccammina, and Reophax genera. Calcareous foraminifera were dominated by Cribroelphidium genus. Micropaleontological data were compared to the environmental parameters characterizing bottom water (temperature, salinity, and dissolved oxygen content) and substrate conditions (grain size composition and total organic carbon content). Higher foraminiferal concentrations and diversity were found in deeper parts of the study region where fine-grained sediments with a higher total organic carbon content were accumulated under stable hydrographical conditions. Calcareous tests were found only at the stations with elevated salinity, indicating that bottom water salinity is the main factor limiting the distribution of calcareous foraminifera. On the other hand, substrate parameters and hydrodynamic conditions appear to play a major role in the distribution of agglutinated foraminifera.

scholarly journals The carbon budget of the Baltic Sea

2011 ◽  
Vol 8 (11) ◽  
pp. 3219-3230 ◽  
Author(s):  
K. Kuliński ◽  
J. Pempkowiak
Keyword(s):  
Organic Carbon ◽  
Baltic Sea ◽  
Carbon Budget ◽  
The Other ◽  
Minor Importance ◽  
The Baltic Sea ◽  
Sources And Sinks ◽  
The North ◽  
The North Sea ◽  
The Baltic

Abstract. This paper presents the results of a comprehensive study of the Baltic Sea carbon budget. The Baltic Sea is very much influenced by terrestrial carbon input. Rivers are the largest carbon source, and their input amounts to 10.90 Tg C yr−1 (Tg = 1012 g) with a 37.5% contribution of organic carbon. On the other hand, carbon is effectively exported from the Baltic to the North Sea (7.67 Tg C yr−1) and is also buried in bottom sediments (2.73 Tg C yr−1). The other sources and sinks of carbon are of minor importance. The net CO2 emission (1.05 Tg C yr−1) from the Baltic to the atmosphere was calculated as the closing term of the carbon budget presented here. There is a net loss of organic carbon, which indicates that the Baltic Sea is heterotrophic.

scholarly journals Hydrological and hydrochemical underpinnings of primary production and division of the Russian sector in the Gdansk basin of the Baltic sea

2019 ◽  
Vol 59 (1) ◽  
pp. 56-71
Author(s):  
E. A. Kudryavtseva ◽  
S. V. Aleksandrov
Keyword(s):  
Primary Production ◽  
Baltic Sea ◽  
Marine Environment ◽  
Bottom Topography ◽  
Water Area ◽  
Nutrient Concentrations ◽  
The Baltic Sea ◽  
Environment Temperature ◽  
Russian Sector ◽  
The Baltic

The distribution patterns of absolute and specific values of primary production in the upper 10-m layer depending on the physical and chemical condition of the marine environment (temperature, salinity, depth, bottom topography and configuration of the coastline, and nutrient concentrations) were distinguished in the Russian sector in the Gdansk Basin of the Baltic Sea based on long-term research data (2003–2015). Based on the results, the considered water area was divided into five regions: Cape Taran, the base of the Curonian Spit, the plateau of Rybachy, the open sea, and the Gdansk Bay (northeastern part). These regions are characterized by higher correlations of primary production and parameters of the marine environment compared to regression analysis for the regions distinguished by bathymetry. Primary production is the most closely correlated with temperature over the entire water area and with nutrients concentrations in seaward regions.

Microbial Processes of Carbon and Sulfur Cycles in Sediments of the Russian Sector of the Baltic Sea

2021 ◽  
Author(s):  
Timur A. Kanapatskiy ◽  
Marina O. Ulyanova ◽  
Timur R. Iasakov ◽  
Olga V. Shubenkova ◽  
Nikolai V. Pimenov
Keyword(s):  
Baltic Sea ◽  
Microbial Processes ◽  
The Baltic Sea ◽  
Russian Sector ◽  
The Baltic

Polycyclic aromatic hydrocarbons in the Baltic Sea — Pre-industrial and industrial developments as well as current status

2020 ◽  
Vol 160 ◽  
pp. 111526
Author(s):  
Marion Kanwischer ◽  
Dennis Bunke ◽  
Thomas Leipe ◽  
Matthias Moros ◽  
Detlef E. Schulz-Bull
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Baltic Sea ◽  
Aromatic Hydrocarbons ◽  
Current Status ◽  
The Baltic Sea ◽  
Polycyclic Aromatic ◽  
The Baltic

36year trends in dissolved organic carbon export from Finnish rivers to the Baltic Sea

2012 ◽  
Vol 435-436 ◽  
pp. 188-201 ◽  
Author(s):  
Antti Räike ◽  
Pirkko Kortelainen ◽  
Tuija Mattsson ◽  
David N. Thomas
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Baltic Sea ◽  
The Baltic Sea ◽  
Carbon Export ◽  
The Baltic
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