Diversity and community composition of pico- and nanoplanktonic protists in the Vistula River estuary (Gulf of Gdańsk, Baltic Sea)

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part II)The diatom records of two sediment cores taken in the SW part of the Gulf of Gdańsk indicate paleoenvironmental variability in the last three stages of formation of the Baltic Sea: the Mastogloia, the Littorina and the Post-Littorina. Diatom community compositions of the cores show the influence of several factors on past environmental conditions of the study area: (1) regional salinity changes, (2) changes of the Vistula River inflow, and (3) sedimentary processes connected with the Hel Peninsula development.

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Distribution of Suspended Sediment in the Gulf of Gdansk off the Vistula River mouth (Baltic Sea, Poland)

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/221/1/012053 ◽

2019 ◽

Vol 221 ◽

pp. 012053 ◽

Cited By ~ 1

Author(s):

Ewa Szymczak ◽

Dorota Burska

Keyword(s):

Baltic Sea ◽

Suspended Sediment ◽

River Mouth ◽

Gulf Of Gdańsk ◽

Vistula River ◽

Gulf Of Gdansk

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Factors determining the accumulation of pentachlorophenol — a precursor of dioxins in bottom sediments of the Gulf of Gdańsk (Baltic Sea)

Oceanological and Hydrobiological Studies ◽

10.2478/s13545-014-0128-9 ◽

2014 ◽

Vol 43 (2) ◽

Cited By ~ 6

Author(s):

Marta Kobusińska ◽

Maria Skauradszun ◽

Elżbieta Niemirycz

Keyword(s):

Baltic Sea ◽

Bottom Sediments ◽

Sediment Toxicity ◽

Gulf Of Gdańsk ◽

The Baltic Sea ◽

Gdansk Deep ◽

Vistula River ◽

Gulf Of Gdansk ◽

The Baltic ◽

Chlorinated Dioxins

AbstractPentachlorophenol (PCP) and its derivatives are considered to be the precursors of dioxins, thus their concentrations in environmental compartments remain relatively correlated. Unlimited production and usage of PCP in recent decades may have posed a potential ecological threat to marine ecosystems due to uncontrolled discharge of this contaminant into the Vistula River and finally into the Gulf of Gdańsk. Since there are no data on PCP concentration in sediments of the southern part of the Baltic Sea, the level of contamination has been examined and possible influence of sediment properties in the Gulf of Gdańsk on the accumulation intensification has been investigated. The study has resulted in the evaluation of an efficient analytical procedure characterized by a low detection limit (LOD<1 ng g−1 d.w.). Instrumental analyses have been supplemented with Microtox® bioassay in order to assess the sediment toxicity. The obtained concentrations in collected samples varied from below the LOD in sandy sediments to 179.31 ng g−1 d.w. in silty sediments, exceeding the PNEC value of 25 ng g−1 d.w. (Predicted No Effect Concentration) estimated for the Baltic Sea (Muir & Eduljee 1999). It has been proven that properties of sediments from the Gulf of Gdańsk, including pH, Eh of bottom water, the content of water and organic matter, affect the rate of PCP accumulation. High toxicity has been recorded in the bottom sediments of the Gdańsk Deep but no statistically significant correlation between PCP concentration and the sediment toxicity has been observed. Analysis of PCP concentration distribution in sediment cores revealed that the surface layer is the most polluted one, which indicates a continuous inflow of PCP from the Vistula River. Horizontal PCP distribution in the sediment from the Gdańsk Deep reveals variability similar to that observed for highly chlorinated dioxins (Niemirycz & Jankowska 2011).

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Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)

Oceanological and Hydrobiological Studies ◽

10.2478/v10009-008-0017-x ◽

2008 ◽

Vol 37 (4) ◽

Cited By ~ 6

Author(s):

Małgorzata Leśniewska ◽

Małgorzata Witak

Keyword(s):

Baltic Sea ◽

The South ◽

Gulf Of Gdańsk ◽

The Baltic Sea ◽

Southern Baltic Sea ◽

Gulf Of Gdansk ◽

Southern Baltic ◽

The Baltic ◽

Palaeoenvironmental Changes

Holocene diatom biostratigraphy of the SW Gulf of Gdańsk, Southern Baltic Sea (part III)The palaeoenvironmental changes of the south-western part of the Gulf of Gdańsk during the last 8,000 years, with reference to the stages of the Baltic Sea, were reconstructed. Diatom analyses of two cores taken from the shallower and deeper parts of the basin enabled the conclusion to be drawn that the microflora studied developed in the three Baltic phases: Mastogloia, Littorina and Post-Littorina. Moreover, the so-called anthropogenic assemblage was observed in subbottom sediments of the study area.

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