Diet of the twaite shad Alosa fallax (Lacépède, 1803) (Clupeidae) in the Gulf of Gdansk, the Baltic Sea

2012 ◽  
Vol 41 (3) ◽  
Author(s):  
Michał Skóra ◽  
Mariusz Sapota ◽  
Krzysztof Skóra ◽  
Anna Pawelec
Keyword(s):  
River Mouth ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Sprattus Sprattus ◽  
Vistula River ◽  
Mysis Mixta ◽  
Twaite Shad ◽  
Alosa Fallax ◽  
Gulf Of Gdansk ◽  
The Baltic

AbstractTwaite shad Alosa fallax (12–48 cm total length) from the Gulf of Gdansk feed on Mysids: Mysis mixta, Neomysis integer, and fish: Sprattus sprattus, Osmerus eperlanus, and Pomatoschistus sp.. In the stomachs of A. fallax there also occur Hydrobia sp., Diptera and small stones, particles of wood and plastic. The food of inshore twaite shad measured from 12 to 21 cm centered on M. mixta. Fish are the main prey for A. fallax from the class length 22–31 cm from the Vistula River mouth and for all shads longer than 32 cm.

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

2014 ◽  
Vol 43 (2) ◽  
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).

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

2008 ◽  
Vol 37 (4) ◽  
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.

scholarly journals Draft Genome Sequence of Paracoccus sp. Strain 228, Isolated from Surface Water of the Gulf of Gdańsk in the Baltic Sea

2019 ◽  
Vol 8 (29) ◽  
Author(s):  
Joanna Karczewska-Golec ◽  
Maja Kochanowska-Łyżen ◽  
Magdalena Bałut ◽  
Arkadiusz Piotrowski ◽  
Piotr Golec ◽  
...  
Keyword(s):  
Surface Water ◽  
Baltic Sea ◽  
Genome Sequence ◽  
Draft Genome ◽  
Draft Genome Sequence ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Content Type ◽  
Gulf Of Gdansk ◽  
The Baltic

We present here the draft genome sequence of Paracoccus sp. strain 228, isolated from the Gulf of Gdańsk in the southern part of the Baltic Sea. The assembly contains 4,131,609 bp in 32 scaffolds.

scholarly journals Elemental composition of invertebrates shells composed of different CaCO<sub>3</sub> polymorphs at different ontogenetic stages: a case study from the brackish Gulf of Gdansk (the Baltic Sea)

2019 ◽  
Author(s):  
Anna Piwoni-Piórewicz ◽  
Stanislav Strekopytov ◽  
Emma Humphreys-Williams ◽  
Piotr Kukliński
Keyword(s):  
Biological Control ◽  
Trace Elements ◽  
Environmental Factors ◽  
Baltic Sea ◽  
Older Individuals ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Gulf Of Gdansk ◽  
The Baltic

Abstract. In this study, the concentrations of 12 metals: Ca, Na, Sr, Mg, Ba, Mn, Cu, Pb, V, Y, U and Cd in shells of bivalve molluscs (aragonitic: Cerastoderma glaucum, Mya arenaria and Limecola balthica and bimineralic: Mytilus trossulus) and arthropods (calcitic: Amphibalanus improvisus) were obtained. The main goal was to determine the incorporation patterns of shells built with different calcium carbonate polymorphs. The role of potential biological control on the shell chemistry was assessed by comparing the concentrations of trace elements between younger and older individuals (different size classes). The potential impact of environmental factors on the observed elemental concentrations in the studied shells is discussed. Specimens were collected from brackish waters of the Baltic Sea (the Gulf of Gdansk). For every species, 40 individuals (ten in each size class) were selected. Pre-cleaned shells were analysed by ICP-OES and ICP-MS to determine the concentrations of metals. The distributions of elements both differ between species and exhibit high intraspecific variability. Calcitic shells preferentially incorporated Mg > Sr > Na, aragonitic shells incorporated Na > Sr > Mg, and bimineralic shells accumulated Na approximately two times more intensively, than Mg and Sr which remained at similar levels. Among all species, the calcitic shells of A. improvisus most effectively concentrated the majority of the studied elements, especially Mg > Mn > Ba, which was contrary to the shells of aragonitic molluscs that contained the lowest levels of trace elements. The size-dependent distributions of elements in shells did not exhibit a consistent pattern. The highest significant differences were found for the bimineralic shells of M. trossulus, while the smallest were found for aragonitic shells; if any variability occurred, it was observed in heavy metals (Pb, Cd). Our results indicate that elemental variability, especially that of Mg and Sr, is dominated by the properties of the crystal lattice. The inconsistent variability of trace element concentrations between species and within single populations supports the important role of species-specific biological control of the biomineralization process and indicates that environmental factors have a significant influence on the incorporation of trace elements into the shells.

Diet and feeding ecology of Eriocheir sinensis on the Polish coast of the Baltic Sea and in the Tagus Estuary, Portugal

2019 ◽  
Vol 48 (3) ◽  
pp. 236-246 ◽  
Author(s):  
Dagmara J. Wójcik-Fudalewska ◽  
Monika Normant-Saremba ◽  
Agata Kolasa ◽  
Pedro M. Anastácio
Keyword(s):  
Feeding Ecology ◽  
Eriocheir Sinensis ◽  
Tagus Estuary ◽  
Vistula Lagoon ◽  
Stomach Fullness ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Gulf Of Gdansk ◽  
The Baltic ◽  
The Vistula Lagoon

Abstract The feeding ecology of the Chinese mitten crab Eriocheir sinensis was studied by analyzing the stomach fullness and its content with regard to sex, size and brackish water habitats occurring on the coast of the Baltic Sea (Gulf of Gdańsk and Vistula Lagoon, Poland) and the Atlantic (Tagus Estuary, Portugal). The presented results show that neither the site, sex (except the Gulf of Gdańsk) nor the size of an individual had a significant (p > 0.05) effect on the stomach fullness of E. sinensis. However, the type of food consumed was significantly (p < 0.05) correlated with the inhabited locality. The stomachs of crabs contained the remains of animal and plant origin, as well as detritus. The remains of animals (Bivalvia, Amphipoda, Gastropoda and Polychaeta) were more frequently found in the crabs from the Gulf of Gdańsk, while the remains of plants (Tracheophyta, Chlorophyta) were most often found in the stomachs of crabs from the Vistula Lagoon and the Tagus Estuary. Detritus was found only in the Gulf of Gdańsk and the Vistula Lagoon. Research indicates that the feeding ecology of omnivore E. sinensis is habitat specific, which should be taken into account when assessing the risk associated with this invasive species.

scholarly journals Partition of pentachlorophenol (PCP) into particulate and dissolved phases in the waters of the Vistula River mouth at the Gulf of Gdańsk

2016 ◽  
Vol 45 (2) ◽  
Author(s):  
Marta E. Kobusińska ◽  
Maria Witt ◽  
Krzysztof Lewandowski ◽  
Elżbieta Niemirycz
Keyword(s):  
Organic Contaminants ◽  
Temporal Trends ◽  
River Mouth ◽  
Gulf Of Gdańsk ◽  
Factors Affecting ◽  
Hydrological Characteristics ◽  
Vistula River ◽  
Gulf Of Gdansk ◽  
Relative Solubility ◽  
Spm Concentration

AbstractThe Vistula River plays an important role in the supply of autochthonous and allochthonous material to the Gulf of Gdansk. The suspended particulate matter (SPM) of fluvial origin is considered to constitute a specific sorbent for halogenated organic compounds due to their lipophilic characteristics and relative solubility. Because there are many factors affecting the input of SPM into the estuarine environment of the Gulf of Gdansk, e.g. hydrological characteristics of the Vistula River, it became necessary to verify whether the same processes may affect a discharge of organic contaminants. The study presents an approach to the assessment of temporal trends in SPM concentration in the Vistula River discharged into the Gulf of Gdansk as well as the analysis of pentachlorophenol (PCP), a commonly used agricultural biocide, a precursor of dioxins in either dissolved or particulate phases in the river (the Vistula River) and sea waters (the Gulf of Gdansk). The study revealed that the hydrological characteristics appear to influence a load of SPM. However, the discharge of PCP is additionally related to the environmental conditions, physicochemical properties of the compound and the sorbent, affecting the partitioning of PCP into dissolved and particulate phases.

scholarly journals The flies (Diptera) say that amber from the Gulf of Gdańsk, Bitterfeld and Rovno is the same Baltic amber

2013 ◽  
Vol 82 (4) ◽  
pp. 379-388 ◽  
Author(s):  
Jacek Szwedo ◽  
Elżbieta Sontag
Keyword(s):  
Species Composition ◽  
Baltic Sea ◽  
Geographical Origin ◽  
Baltic Amber ◽  
Gulf Of Gdańsk ◽  
The Baltic Sea ◽  
Biting Midges ◽  
Gulf Of Gdansk ◽  
The Baltic ◽  
Sea Coast

ABSTRACT Amber and its inclusions have been studied for over 200 years. Particular reverence was accorded the amber from the deposits around the Gulf of Gdańsk. As knowledge of amber increased, the problem of distinguishing amber from the various deposits along the Baltic Sea coast, but also in Germany, Belarus and Ukraine arose. Here we discuss the species composition of biting midges (Ceratopogonidae) from amber derived from different deposits, and discuss the use of regional names for Baltic amber yielding inclusions from the same taphocoenosis but of different geographical origin.

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