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1

Sedimentary structure of the storm surge washover fan on the lake Bukowo spit

100%
Rudowski S., Wroblewski W. R., Wroblewski R.
Oceanological Studies
|
2000
|
vol. 29
|
issue 3
101-107
EN
A storm surge washover fan on the Lake Bukowo spit (kilometre 287.3 of the Polish Baltic coast) is described in detail. The in-depth examination of the fan relief and sedimentary facies allowed to identify two subfacies represented by the fan channel and the fan core. The importance of washover fan facies for the structure and development of sandy barriers as well as for shore sediment budget and shore protection is stressed.
2

The transport of material by the rivers of the northern slope of the Pomeranian Lake Land to the Baltic Sea

100%
Szymczak E.
Oceanological Studies
|
2002
|
vol. 31
|
issue 3-4
85-97
EN
The article presents the results of research on the transport of sediment carried by the rivers of the northern slope of the Pomeranian Lake Land to the Baltic Sea in the years 1961-1980. The research includes rivers flowing into the open sea: Rega, Parseta, Wieprza, Slupia, Lupawa and Leba. The total surface of the basins of the rivers in question amounts to 13825.1 km2. The analysis was conducted on the basis of the data concerning the turbidity and flow of the rivers included in hydrological year-books. The size of the transport of the sediment for respective rivers has been counted and the transport of the wash load was analysed with respect to changing conditions of the streamflow and to physical-geographical features of the basin. The transport of the sediment carried to the sea was estimated (46000 tons) and the participation of the rivers of the northern slope of the Pomeranian Lake Land in the total transport of the river wash load from the catchment area of the Baltic Sea has been estimated (0.63%).
3

Occurence and significance of Chaetoceros (Bacillariophyceae) reasting spores in the Holocene sediments of the Baltic Sea

100%
Stachura-Suchoples K., Zgrundo A., Witkowski A.
Oceanological Studies
|
1998
|
vol. 27
|
issue 2
87-92
EN
The material studied originated from the marine Holocene sediments of the Gulf of Gdansk and from Kiel Bay. During the diatom analysis, the interest was focused on the dominance of Chaetoceros resting spores. An abundant occurrence of such resting spores was interpreted in terms of changes of environmental conditions in the study areas. In the fossil sediments, it indicated the inflow of the oceanic waters which caused the salinity increase and the natural rise in the nutrient content, whereas in the subfossil sediments, it marked the increasing human impact.
4

Seismostratigraphy of the nearshore sediments at Kepa Redlowska, Gulf of Gdansk

100%
Wicher W., Necel N. A., Necel A.
Oceanological Studies
|
2000
|
vol. 29
|
issue 3
93-100
EN
The results of the geological interpretation of the seismoacoustic sediment profiling in an area of the Kepa Redlowska nearshore are presented. First, several seismoacoustic units were selected and then they were geologically interpreted. These were: Miocen muds (1), older till (2.1), marginal lake muds (2.2), younger till (2.3), sandy-gravelly, series (3) of water-glacial and river sediments (in an upper part also marine sediments) as well as contemporary sands (4) of a so called dynamic layer. A bathymetric scheme of the bottom and a morphological scheme of the lower surface floor bed of the sandy gravelly series (3 + 4) were worked out. Lateral and vertical successions of the selected units were analysed and their stratigraphic sequences were determined
5

Denitrification in the sediments of the inner Puck Bay -preliminary results

100%
Graca B.
Oceanological and Hydrobiological Studies
|
2004
|
issue 4
73-91
EN
Denitrification was measured in the sediments of the Inner Puck Bay using the acetylene inhibition technique and pertinent environmental data. This process was not found to be particularly significant for the nitrogen budget of the ecosystem. The rate ranged from 0 to 40.2 mmol N m-2 h-1, which is equivalent to 151 t N per year. This constitutes 6.5% of the external nitrogen input to the investigated water body. The denitrification rate reached the highest values in spring, after the first algal blooms, when relatively fresh organic matter had amassed in the sediments and nitrate concentrations in interstitial waters peaked. The rates were almost sixfold lower than the maximal value in summer and fall. The main nitrogen source for denitrification in the investigated area was nitrification within the sediments. The deciding parameter determining the variability of the denitrification rate was the nitrate concentration in interstitial waters.
6

Chlorinated hydrocarbons in sediments from the Vistula Lagoon

100%
Sapota G.
Oceanological Studies
|
1997
|
vol. 26
|
issue 2-3
61-69
EN
The aim of this work was to establish the level of pollution by highly persistent polychlorinated contaminants in sediments from the Vistula Lagoon. Concentrations of PCBs, DDT and its metabolites, isomers of HCH and HCB were determined in the surface sediments (0 - 3 cm depth) from 6 stations. All the substances investigated were present in sediment samples from the Vistula Lagoon in concentrations above the detection limit of the method used (0.01 ng?g-1 d.w.). Concentrations of isomers of HCH and HCB ranged between 0.04 and 0.33 ng?g-1 d.w.. PCB values varied from 0.10 ng?g-1 d.w. to 0.99 ng?g-1 d.w. Of all the substances analysed, DDT and its metabolites were present in the highest concentrations - up to 1.97 ng?g-1 d.w.
7

Investigating the source of hydrogen sulphide in sediments of the Puck Bay in the vicinity of Hel port

100%
Bolalek J., Jankowska H., Leczynski L., Falkowska L.
|
EN
The paper presents results of analytical investigation on possible sources of hydrogen sulphide occuring in seawater supplied to marine laboratories of the Marine Station of Gdansk University in Hel.Seawater is pumped to aquaria system from the Puck Bay.Hydrogen sulphide concentration in pumped water was about o.25 mmol/ml, while in sediments surrounding the water intake it reached 2.64 mmol/ml.It turned out that hydrogen sulphide was produced in sediments by sulphste reducing bacterai from anthropogenic wastes.
8

Temporal variations in phosphorus species in the surface layer of bottom sediments from the Gulf of Gdansk - preliminary research

100%
Graca B., Bolalek B. J., Bolalek J.
|
EN
Temporal variations in phosphorus species [total phosphorus (Ptot), organic phosphorus (Porg), total inorganic phosphorus (Pmin), phosphorus bound to calcium (PCa), aluminium (PAl) and iron (PFe)] were studied in the surface layer of bottom sediments from the Gulf of Gda?sk. These changes were caused mainly by variability in Porg, PAl and PFe concentrations and were closely related to the growth cycle in the basin. The phosphorus concentration was higher in the spring and summer (April - September) that in the autumn and winter (November-March). For much of the year concentrations of Pmin were higher than those of organic phosphorus. The prevalent form of inorganic phosphorus was PCa, whose concentrations exceeded those of iron- and aluminium-bound phosphorus.
9

The occurrence of total and labile forms of lead and nickel in the sediments of the port of Gdansk

100%
Radke B., Dembska G., Aftanas B., Bolalek J.
|
EN
Sediment samples collected in 1997 and 1998 from the Wislane, Obroncow Poczty Polskiej or Siarkowe (Sulfur), Oliwskie and Paliw Plynnych (Liquid Fuels) quays were sorted into four grain size fractions, i.e., <2.00 mm; 2.00 - 0.063 mm; 0.063 - 0.032 mm; <0.032 mm. It was determined that the sediments in the port area are small-grained sands with a small admixture of silt. The analyzed benthic sediments contained different amounts of organic matter and displayed varying water content. The mean contents of the labile form of lead and its total concentration in the grain size fraction <2.00 mm were 6.4 mg.kg ?1 d.w. and 11.4 mg.kg ?1 d.w., respectively. These values for nickel were 2.9 mg.kg ?1 d.w. for the labile form and 7.1 mg.kg ?1 d.w. for total concentration. The widest range of values was noted in the sediment surface layer (0-20 cm) for total concentration and labile forms. Sediments collected from locations close to the Gulf of Gdansk (e.g., Liquid Fuels Quay) and from areas with low industrial activity (e.g., Sulfur Quay) exhibited Pb and Ni concentrations which were many times lower than those in other areas of the port which were investigated.
10

Distribution of heavy metals in the river Ulla and its estuary (North-West Spain)

88%
Belzunce_Segarra M. J., Helios-Rybicka E., Prego R.
Oceanological Studies
|
1997
|
vol. 26
|
issue 2-3
139-152
EN
The 131-km-long Ulla is one of the most important rivers in the region of Galicia, and flows into the R?a of Arosa, the largest r?a in Galicia. Water, surface sediments and suspended particulate matter were sampled along the Ulla and in its estuary. The grain size fractions below 500 mum, below 63 mum. and, for selected samples, below 2 mum were separated and their contents measured. The concentration of suspended matter, pH and water salinity were also determined. The solid samples were digested with HF+HNO3+HCl and the total concentration of heavy metals (Zn, Pb, Cd, Cu, Ni, Cr, Mn and Fe) analysed by AAS. The sediments and suspended matter in the upper reaches of the river Ulla were found to be enriched with heavy metals: Pb, Cu, Ni, Cr and Zn were present in the sediments in concentrations of up to 68, 300, 357, 1035 and 272 mg kg-1 respectively. The heavy metal concentration in the clay fraction of selected samples is higher than in the below 63 mum fraction. The surface sediments contain heavy metals in concentrations mostly well above what would be expected if these metals had been derived from detrital inputs from soils and weathered granitic rocks, especially in the upper reaches of the Ulla. Of the heavy metals investigated, Zn, Cu, Pb, Cr and Ni are derived from anthropogenic sources.
11

Temporal variation in the accumulation of organic carbon and nitrogen in the suspended matter and silty surface sediment of the western Gulf of Gdansk (southern Baltic Sea) - comparison with the Atlantic Bay of Marennes Oleron

88%
Maksymowska D., Feuillet-Girard M., Jankowska H., Heral M.
Oceanological Studies
|
1997
|
vol. 26
|
issue 2-3
91-116
EN
The temporal changes of organic C and N concentration and in atomic C:N ratio in both suspended particulate matter (SPM) and surface sediments (0-5cm) are discussed. The investigations were conducted in May, August, November 1994 and January 1995, at a sampling station located in the western Gulf of Gdansk (depth 37 m).The respective concentrations of organic carbon and nitrogen in SPM range from 0.285 to 0.655 mg dm-3, and from 0.033 to 0.075 mg dm-3. The temporal changes in the concentrations of these elements are due to the seasonal variation in primary production, and are also influenced by the inflow of terrestrial discharges. The atomic C:N ratio reflects seasonal changes in SPM composition, and generally indicates that particular organic matter (POM) in this part of the Gulf of Gdansk consists to a large extent of detritus or terrigenous material. However, in the summer, there is a substantial proportion of fresh planktonic material in the particulate organic matter (the C:N atomic ratio falls to 8.5 - 10.5).Significant temporal changes in organic carbon and nitrogen concentrations were also recorded in the surface sediment (0-1 cm); these range from 28.5 to 49.6 mg g-1 of dry sediment and from 3.12 to 4.6 mg g-1 of dry sediment for carbon and nitrogen respectively. Values were highest in May and November, and indicate a possible inflow of organic matter to the sediments following the spring and autumn phytoplankton blooms. The considerably lower values of both parameters noted in August suggest that large quantities of organic carbon and nitrogen are lost in summer, a process governed by the rise in temperature of the near-bottom water. The C:N atomic ratio in the first surface sediment layer indicates that the inflow of fresh organic matter is predominant in spring, when C:N is lowest (8.75). The summer and winter values (10.5 - 11.1) reflect the presence of degraded matter. Values were highest in early November (14.4), which is indicative of the inflow of highly degraded or terrigenous organic material. These results are compared to those of different ecosystems, particularly with an Atlantic coastal area, the estuarine Marennes - Ol?ron Bay in France, where the authors took the same approach. SPM concentrations are considerably higher (50 to 360 mg dm-3) than in the Gulf of Gdansk. The respective concentrations of organic carbon and nitrogen in SPM range from 0.95 to 14.9 mg dm-3 and from 0.2 to 1.5 mg dm-3. However, these high values are not reflected in the accumulation of organic matter in the surface sediment layer, where the carbon and nitrogen contents were low at 7.5 mg g-1 and 1.3 mg g-1 of dry sediments respectively. In this bay such differences are explained by the sediment resuspension caused by strong currents inducing considerable turbidity.
12

Interdependence between phosphorus forms in sediments and iron in interstitial waters in the Gulf of Gdansk

88%
Matuszewska K., Bialkowska I., Bolalek J.
Oceanological and Hydrobiological Studies
|
2003
|
issue 1
5-14
EN
The content of various phosphorus forms in sediments and the content of iron in interstitial waters were measured in sediment samples collected in the Gulf of Gdansk in March 2001. The studies showed that the greatest amounts of the total phosphorus and total dissolved iron were present in the uppermost sediment layer, and their respective concentrations ranged from 203,99 mumol?g-1d.w. to 1894,02 mumol?g-1d.w., and from 0,02 mumol?dm-3 to 4,68 mumol?dm-3. The contents of these parameters were directly connected with the type of sediment - the greatest concentrations were measured in fine sediments. The analysis of multiple correlation coefficients demonstrated that in over 90% of cases the concentration of phosphorus bound with iron depended on: the sediment type and its humidity, the content of organic matter, and the concentration of the total iron dissolved in the interstitial waters.
13

Polonium, uranium and plutonium in the Southern Baltic Sea

88%
Skwarzec B.
Oceanological Studies
|
1997
|
vol. 26
|
issue 1
195-204
EN
This paper presents the results of measurements of polonium, uranium and plutonium radionu-clides in selected components of the southern Baltic ecosystem, as well as the recognition of their accumulation processes in the trophic chain. Investigation on the 210Po, 239+240Pu concentrations in the Baltic biota revealed that these radionuclides are strongly accumulated by some species. Their mean values of the bioaccumulation factor (BCF)* fell within the range from 9?102 to 2.5?104. The Baltic Sea algae, benthic animals and fish concentrated uranium isotopes only to a small degree, and mean BCF values for this element range from 1 to 55, what is several orders of magnitude lower than for polonium and plutonium. Moreover, it was found that fish constitute an important source of 210Po for human.
14

Heavy metal contents in sediments and the blue mussel Mytilus Edulis from three regions of the Southern Baltic Sea

88%
Perkowska A., Protasowski M.
Oceanological Studies
|
1996
|
vol. 25
|
issue 4
55-63
EN
Samples were collected .from three areas of the Baltic Sea: Kiel, Warnem?nde, Swinoujscie. The concentrations of Hg, Cd, Pb, Zn, Cu were determined in sediments and mussel tissue (Mytilus edulis); the sediment samples were also analysed for Cr, Ni, Mn, V, Fe and Mn. Differences between the metal contents in the sediment samples in the various areas were found - the highest level was noted in the Kiel region. The Warnem?nde and ?wnouj?cie areas were comparable in this respect. In the Swinoujscie and Kiel regions the level of heavy metals in sediment decreased with distance from the entrance to the ports. Since the finding did not correspond to the metal levels in the mussel tissue, using the mussel Mytilus edulis as a bioindicator of heavy metal pollution seems questionable.
15

Eutrophication of Lake Swiete (Gniezno, Western Poland) as evidenced by succession of algal assemblages in sedimentary record

88%
Machowiak D.
Oceanological Studies
|
1998
|
vol. 27
|
issue 2
83-86
EN
The subject of the study was to the compare results of phytoplankton and the sediment core analyses from several lakes in Wielkopolska (Western Poland). Species composition of algal assemblages occurring in these lakes changed as would be expected for increasing trophic conditions. Along with progressive eutrophication diatom taxa belonging to genera Stephanodiscus and Cyclotella became replaced by green algae and finally by blue-green algae. The dominance of blue-green algae is attributed to hypertrophic conditions.
16

Preliminary studies on heavy metal content in biota and sediments from artificial reef area

88%
Protasowicki M.
Oceanological Studies
|
1993
|
issue 64/3
77-83
17

Microbiological processes taking place in Dobczyce reservoir during spring water bloom

75%
Bednarz T., Starzecka T.
Oceanological Studies
|
1998
|
vol. 27
|
issue 2
13-21
EN
In waters of Dobczyce reservoir, the organic carbon content, biomass of algae and bacteria, respiration of bacteria and respiration of aquatic organisms (measured by oxygen uptake), and energetic expenditures per unit of bacterial biomass ('costs of maintenance') at the beginning of spring water bloom (May, 1996) caused by Nitzschia palea (Kutz.) W. Sm. were greater than those in the second phase of bloom. However, photosynthesis of algae was greater in the second one. In the surface layer of bottom sediments, the greatest values of measured parameters were noted in the second phase of water bloom but the 'costs of maintenance' of bacteria reached maximum values one week after of water bloom break.
18

Bioavailability and bioaccumulation of hydrophobic organic pollutants. Part II. Sorption of pollutants and factors influencing this process

75%
Oleszczuk P.
|
2007
|
issue 1
26-39
EN
Translocation, leaching, uptake by plants and degradation of hydrophobic organic pollutants are largely determined by the properties of the soil/sediments. The above properties influence those processes which directly or indirectly influence the bioavailability of pollutants. The factor which plays a decisive role in determining bioavailability/bioaccumulation of pollutants is sorption. Where sorption is concerned, such matrix properties as the presence, composition, properties of organic matter, type of clay materials, type and amount of other pollutants, etc. play an important role. The second part of the study is a review of the literature on the influence of hydrophobic organic pollutants with geosorbents acting through sorption. Matrix properties that can significantly influence this process have been described in detail.
19

Bioavailability and bioaccumulation of hydrophobic organic pollutants. Part I. General remarks

63%
Oleszczuk P.
|
2007
|
issue 1
9-25
EN
Contaminants entering the soil environment as by-products of industrial or technological processes undergo various transformations. Some easily undergo degradation, volatilization or leaching, some are accumulated in the living organisms, while others get strongly bound to soil components through sorption, sequestration or bound-residue formation. In literature, it has been proved that the above mentioned processes considerably limit the bioavailability of contaminants and hence the effectiveness of biodegradation is lowered. The present study is a review of the literature on the issue of bioavailability of persistent organic pollutants for microorganisms and soil invertebrates. The first part presents some definitions of bioavailability and bioaccumulation proposed by various authors. Factors influencing the process of biodegradation have also been described with special attention drawn to their relation to the processes of bioavailability.
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