Diatom biofacies in the SW Gulf of Gdańsk and the Vistula Lagoon (the southern Baltic Sea) as indicators of the basin evolution in the Middle and Late Holocene

2013 ◽  
Vol 42 (1) ◽  
Author(s):  
Małgorzata Witak
Keyword(s):  
Environmental Changes ◽  
Sediment Cores ◽  
Vistula Lagoon ◽  
Gulf Of Gdańsk ◽  
River Waters ◽  
Gulf Of Gdansk ◽  
Middle And Late Holocene ◽  
The Vistula Lagoon

AbstractThis article presents results of diatom analysis of seven sediment cores taken from various depths of the Gulf of Gdańsk between the Hel Peninsula and the coast of Gdańsk and Gdynia. Further eight cores were drilled in the northern, southern and central part of the Vistula Lagoon. The present investigations enabled the determination of: (i) differentiation of diatom assemblage zones, (ii) correlation of palaeoecological units with reference to the following stages: Mastogloia Sea, Littorina Sea, Post-Littorina Sea, including the latest environmental changes associated with an anthropogenic factor, (iii) description of the defined diatom biofacies based on statistical analysis, (iiii) reconstruction of spatial and temporal development of both basins with the emphasis on the role of inflows of sea and river waters.

Diatom record of progressive anthropopressure in the Gulf of Gdańsk and the Vistula Lagoon

2018 ◽  
Vol 47 (2) ◽  
pp. 167-180 ◽  
Author(s):  
Małgorzata Witak ◽  
Jarosław Pędziński
Keyword(s):  
Coastal Waters ◽  
Surface Sediments ◽  
Sediment Cores ◽  
Vistula Lagoon ◽  
Salt Tolerant ◽  
Gulf Of Gdańsk ◽  
Vistula River ◽  
Gulf Of Gdansk ◽  
Different Parts ◽  
The Vistula Lagoon

Abstract This study describes the subfossil diatom flora in the surface sediments of the Polish coastal waters in relation to human impact. The material studied consists of the uppermost parts of seven sediment cores collected from the SW Gulf of Gdańsk and eight cores from the Vistula Lagoon. Our results show the present-day ecological state of both basins just before the planned construction of a navigable channel of the Vistula Spit, which will be the next factor affecting their hydrology. In different parts of the Gulf of Gdańsk, cultural eutrophication resulted in a distinct “anthropogenic assemblage” in the surface sediments. Its structure relates directly to the distance from the mouth of the Vistula River. In the surface assemblages of the Vistula Lagoon, the number of salt-tolerant diatoms increased with the salinity of the basin. Locally, a large number of pollution-resistant taxa was also observed.

Evidence of cultural eutrophication of the Gulf of Gdańsk based on diatom analysis

2019 ◽  
Vol 48 (3) ◽  
pp. 247-261 ◽  
Author(s):  
Jarosław Pędziński ◽  
Małgorzata Witak
Keyword(s):  
Surface Sediments ◽  
Environmental Changes ◽  
Sediment Cores ◽  
Gulf Of Gdańsk ◽  
Cultural Eutrophication ◽  
Organic Matter Concentration ◽  
Nitrogen Loads ◽  
Trophic Changes ◽  
Gulf Of Gdansk ◽  
Matter Concentration

Abstract The objective of this study was to reconstruct the environmental changes in the Gulf of Gdańsk in the last 200 years. Four subbottom sediment cores were analyzed with respect to diatom flora and anthropogenic effects. The so-called “anthropogenic assemblage” – a result of cultural eutrophication – was observed in the surface sediments. Changes in the species composition may have been caused by the increased use of fertilizers, nitrogen loads and increasing organic matter concentration. Three phases (A, B and C) were distinguished based on the floristic spectrum, which clearly indicates trophic changes in the study area.

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 Impact of the Artificial Strait in the Vistula Spit on the Hydrodynamics of the Vistula Lagoon (Baltic Sea)

Water ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 990 ◽  
Author(s):  
Michał Szydłowski ◽  
Tomasz Kolerski ◽  
Piotr Zima
Keyword(s):  
Water Level ◽  
Storm Surges ◽  
High Water ◽  
Vistula Lagoon ◽  
Gulf Of Gdańsk ◽  
Sea Levels ◽  
Lowland Area ◽  
Gulf Of Gdansk ◽  
The Impact ◽  
The Vistula Lagoon

In the Vistula Lagoon, storm surges are induced by variable sea levels in the Gulf of Gdańsk and wind action. The rising of the water level in the southern part of the basin, exceeding 1.0 m above mean sea level, can be dangerous for the lowland area of Żuławy Elbląskie, causing the inundation of the polders adjacent to the lagoon. One of the potential possibilities to limit the flood risk is to decrease the water level in the lagoon during strong storm surges by opening an artificial canal to join the lagoon with the Gulf of Gdańsk. The decision to build a new strait in the Vistula Spit was made in 2017. In order to analyze the impact of the artificial connection between the sea and the lagoon during periods of high water stages in the southern part the lagoon, mathematical modelling of the hydrodynamics of the Vistula Lagoon is required. This paper presents the shallow water equations (SWEs) model adapted to simulate storm surges driven by the wind and sea tides, and the numerical results obtained for the present (without the new strait) and future (with the new strait) configuration of the Vistula Lagoon.

Residue of chlorinated pesticides in fish caught in the Southern Baltic

2013 ◽  
Vol 42 (3) ◽  
Author(s):  
Andrzej Reindl ◽  
Lucyna Falkowska ◽  
Emilia Szumiło ◽  
Marta Staniszewska
Keyword(s):  
Safety Assessment ◽  
Vistula Lagoon ◽  
Gulf Of Gdańsk ◽  
Fish Tissues ◽  
Chlorinated Pesticides ◽  
Consumer Safety ◽  
Gulf Of Gdansk ◽  
Southern Baltic ◽  
Concentration Limits ◽  
The Vistula Lagoon

AbstractThe aim of this study was to estimate the residue of chlorinated pesticides in the edible fish caught in the Gulf of Gdańsk and in the Vistula Lagoon. The highest mean concentrations of total DDT were found in the muscles of salmon (331.45 ng g−1 lw.) and sabre carp (306.29 ng g−1 lw.) caught in the Vistula Lagoon, and in the muscles of cod (309.88 ng g−1 lw.) and herring (304.86 ng g−1 lw.) from the Gulf of Gdańsk. Moreover, it was discovered that the following were present in the muscles of fish: DDT metabolites (pp’-DDE and pp’-DDD isomers) as well as hexachlorobenzene and its metabolites and endrin, dieldrin, α-endosulfan isomers and methoxychlor. Pesticides concentrations were higher in the livers of fish than in the muscles, which proves that the removal of toxins from the fish systems dominates over their accumulation. Because no concentration limits for pesticides have been defined, consumer safety assessment of fish caught in the Southern Baltic and in the Vistula Lagoon is not possible. The authors, having observed an increase in heksachlorobenzen in fish tissues suggested the existence of contemporary sources of pesticides which introduce them into the coastal zone.

A review of the diatom research in the Gulf of Gdańsk and Vistula Lagoon (southern Baltic Sea)

2013 ◽  
Vol 42 (3) ◽  
Author(s):  
Małgorzata Witak
Keyword(s):  
Surface Sediments ◽  
Benthic Communities ◽  
Late Glacial ◽  
Vistula Lagoon ◽  
Gulf Of Gdańsk ◽  
History Of ◽  
Gulf Of Gdansk ◽  
Late Glacial And Holocene ◽  
Different Parts ◽  
The Vistula Lagoon

AbstractThe paper presents the history of diatom studies carried out in the Gulf of Gdańsk and the Vistula Lagoon since the beginning of the 20th century. One aspect of the research focuses on describing the structure of planktonic and benthic communities living in different parts of the area or occurring in their surface sediments as taphocoenoses. Other investigations concentrate on the fossil diatom flora, which is widely used in the research on the Late Glacial and Holocene to resolve paleogeographic, sedimentological and paleoecological problems.

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