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Wyświetlanie 1-15 z 22
Tytuł:
Biogeochemical alteration of the benthic environment by the zebra mussel Dreissena polymorpha (Pallas)
Autorzy:
Zaiko, A.
Paskauskas, R.
Krevs, A.
Powiązania:
https://bibliotekanauki.pl/articles/47856.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
Curonian Lagoon
Dreissena polymorpha
benthic macroinvertebrate
biogeochemical alteration
ecosystem
mineralization
nitrogen
nutrient
oxygen consumption
phosphorus
sediment
shell
zebra mussel
Opis:
The aim of this study was to verify whether the biogeochemical features (e.g. concentration of nutrients, oxygen consumption, mineralization rate, Eh) of sediments changed by the zebra mussel or its shell deposits differ from those in the ambient soft bottom, and how these differences are related to the structure of benthic macroinvertebrates. In 2006 three sampling sessions were carried out in the Curonian Lagoon, SE Baltic Sea, at three pre-defined sites, corresponding to different bottom types: zebra mussel bed, zebra mussel shell deposits and bare soft sediments. Similarity analysis of biogeochemical parameters indicated that bottom sediments covered with zebra mussel shell deposits were rather distinct from the other bottom types because of the lowest total organic matter mineralization rate and highest organic carbon, total phosphorus and total nitrogen content. The parameters measured in the zebra mussel bed did not deviate conspicuously from the values observed in bare bottoms, except for the higher rate of oxygen consumption in the upper sediment layer. Unsuitable anoxic conditions on the one hand and the ‘attractive’ shelters provided by zebra mussels on the other hand may promote the epifaunal life style in the habitats formed by dense zebra mussel clumps.
Źródło:
Oceanologia; 2010, 52, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Absence of evidence for viral infection in colony-embedded cyanobacterial isolates from the Curonian Lagoon
Autorzy:
Sulcius, S.
Staniulis, J.
Paskauskas, R.
Olenina, I.
Salyte, A.
Ivanauskaite, A.
Griniene, E.
Powiązania:
https://bibliotekanauki.pl/articles/48214.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Aphanizomenon flos-aquae
Cyanoprokaryota
bloom
colony formation
lysis
virus-like particle
viral infection
Microcystis aeruginosa
virus-host interaction
Curonian Lagoon
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphology and distribution of phage-like particles in a eutrophic boreal lagoon
Autorzy:
Sulcius, S.
Staniulis, J.
Paskauskas, R.
Powiązania:
https://bibliotekanauki.pl/articles/47555.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
aquatic ecosystem
Baltic Sea
biodiversity
Curonian Lagoon
distribution
electron microscopy
morphology
pelagic ecosystem
spatial distribution
virus
virus-like particle
Opis:
In this paper we present the results of direct observations of the morphology and size of phage-like particles by means of transmission electron microscopy (TEM) as a function of their spatial distribution in the shallow highly productive Curonian Lagoon of the Baltic Sea. In total, 26 morphologically different forms of phagelike particles were found. Different trends of distribution in terms of abundance, size and shape of virus-like particles were demonstrated. The total abundance of viruses varied from 1.91×107 ml−1 to 5.06×107 ml−1. The virus to bacteria ratio (VBR) changed from 15.6 to 49 and was negatively associated with total bacterial numbers (r = −0.60; p < 0.05). The phages of family Myoviridae were the most diverse and were dominant at all stations.
Źródło:
Oceanologia; 2011, 53, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Limited success of the non-indigenous bivalve clam Rangia cuneata in the Lithuanian coastal waters of the Baltic Sea and the Curonian Lagoon
Autorzy:
Solovjova, S.
Samuiloviene, A.
Srebaliene, G.
Minchin, D.
Olenin, S.
Powiązania:
https://bibliotekanauki.pl/articles/47926.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
bivalve
non-indigenous species
Rangia cuneata
clam
coastal water
environment parameter
winter condition
Lithuania
Curonian Lagoon
Źródło:
Oceanologia; 2019, 61, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of metals and extent of contamination in sediments from the South-Eastern Baltic Sea (Lithuanian zone)
Autorzy:
Remeikaite-Nikiene, N.
Garnaga-Budre, G.
Lujaniene, G.
Joksas, K.
Stankevicius, A.
Malejevas, V.
Bariseviciute, R.
Powiązania:
https://bibliotekanauki.pl/articles/49066.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
metal distribution
surface sediment
pollution source
enrichment factor
geoaccumulation index
contamination factor
Baltic Sea
Lithuania
Curonian Lagoon
Źródło:
Oceanologia; 2018, 60, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selenium content in European smelt (Osmerus eperlanus eperlanus L.) in Pomerania Bay, Gdansk Bay and Curonian Lagoon
Autorzy:
Pilarczyk, B.
Pilecka-Rapacz, M.
Tomza-Marciniak, A.
Domagala, J.
Bakowska, M.
Pilarczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/15264.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:
selenium content
European smelt
Osmerus eperlanus
Pomeranian Bay
Gdansk Bay
Curonian Lagoon
Opis:
Migratory smelt (Osmerus eperlanus eperlanus L.) may be perceived as a valuable indicative organism in monitoring the current environmental status and in assessment of a potential risk caused by selenium pollution. The aim of the study was to compare the selenium content in the European smelt from the Bay of Pomerania, Gdansk, and the Curonian Lagoon. The experimental material consisted of smelt samples (muscle) caught in the bays of Gdansk and Pomerania and the Curonian Lagoon (estuaries of the three largest rivers in the Baltic Sea basin: the Oder, the Vistula and the Neman). A total of 133 smelt were examined (Pomerania Bay n = 67; Gdansk Bay n = 35; Curonian Lagoon n = 31). Selenium concentrations were determined spectrofluorometrically. The data were analyzed statistically using one-way analysis of variance, calculated in Statistica PL software. The region of fish collection significantly affected the content of selenium in the examined smelts. The highest content of selenium was observed in smelt caught in the Bay of Gdansk (0.236 μg g-1 w.w.), then in smelt from the Pomeranian Bay (0.165 μg g-1 w.w.), and the lowest in smelt obtained in the Curonian Lagoon (Lithuania) (0.104 μg g-1 w.w.). The low concentrations of selenium recorded in the smelt show that there is a deficiency of this element, especially in the Curonian Lagoon (Lithuania). Geochemically, Poland and Lithuania are selenium deficient areas. Migratory smelt may serve as indicative organisms of environmental levels of selenium.
Źródło:
Journal of Elementology; 2015, 20, 4
1644-2296
Pojawia się w:
Journal of Elementology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bioaccumulation of microcystins in invasive bivalves: A case study from the boreal lagoon ecosystem
Autorzy:
Paldaviciene, A.
Zaiko, A.
Mazur-Marzec, H.
Razinkovas-Baziukas, A.
Powiązania:
https://bibliotekanauki.pl/articles/47622.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
microcystin
mussel tissue
zebra mussel
bioaccumulation
bivalve
Dreissena polymorpha
brackish water
eutrophic water
Curonian Lagoon
Baltic Sea
environment condition
biomonitoring
protein phosphatase
ELISA test
Źródło:
Oceanologia; 2015, 57, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Toxic cyanobacteria blooms in the Lithuanian part of the Curonian Lagoon
Autorzy:
Paldaviciene, A.
Mazur-Marzec, H.
Razinkovas, A.
Powiązania:
https://bibliotekanauki.pl/articles/48516.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
blue-green alga
Curonian Lagoon
Microcystis aeruginosa
Nodularia spumigena
Cyanoprokaryota
bloom
microcystin
Lithuania
nodularin
Opis:
The phenomenon of cyanobacteria (blue-green algae) blooms in the Baltic and the surrounding freshwater bodies has been known for several decades.The presence of cyanobacterial toxic metabolites in the Curonian Lagoon has been investigated and demonstrated for the first time in this work (2006–07). Microcystis aeruginosa was the most common and widely distributed species in the 2006 blooms. Nodularia spumigena was present in the northern part of the Curonian Lagoon, following the intrusion of brackish water from the Baltic Sea; this is the first time that this nodularin-(NOD)-producing cyanobacterium has been recorded in the lagoon.W ith the aid of high-performance liquid chromatography (HPLC), four microcystins (MC-LR, MC-RR, MC-LY, MC-YR) and nodularin were detected in 2006.T he presence of these cyanobacterial hepatotoxic cyclic peptides was additionally confirmed by enzyme-linked immunosorbent assay (ELISA) and protein phosphatase inhibition assay (PP1).Micr ocystin-LR, the most frequent of them, was present in every sample at quite high concentrations (from <0.1 to 134.2 μg dm−3).I n 2007, no cyanobacterial bloom was recorded and cyanotoxins were detected in only 4% of the investigated samples.A comparably high concentration of nodularin was detected in the northern part of the Curonian Lagoon.I n one sample dimethylated MC-RR was also detected (concentration 7.5 μg dm−3).
Źródło:
Oceanologia; 2009, 51, 2; 203-216
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tolerance of Paramysis lacustris and Limnomysis benedeni (Crustacea, Mysida) to sudden salinity changes: implications for ballast water treatment
Autorzy:
Ovcarenko, I.
Audzijonyte, A.
Gasiunaite, Z.R.
Powiązania:
https://bibliotekanauki.pl/articles/48901.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
experiment
Curonian Lagoon
Ponto-Caspain mysid
mysid
Paramysis lacustris
Baltic Sea
Crustacea
Sopot
invasive species
conference
Mysida
Limnomysis benedeni
salinity tolerance
Opis:
In order to draw implications for ballast water management, we tested the tolerance of two Ponto-Caspian mysid species Paramysis lacustris and Limnomysis benedeni to sudden salinity changes. The naturally stenohaline P. lacustris was more susceptible to higher salinities; its mortality rate at 19 PSU was 60%, whereas exposure to 23 PSU was 100% lethal. The euryhaline L. benedeni survived in salinities of up to 19 PSU, but experienced 100% mortality at 34 PSU. The return of both mysid species to fresh water after the 24 h exposure to higher salinities did not prevent further mortality. Considering the rather high short-term salinity tolerance of both species, a salinity of at least 30 PSU should be used as an appropriate biocide.
Źródło:
Oceanologia; 2006, 48, S
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accumulation of 137Cs in bottom sediments of the Curonian Lagoon
Autorzy:
Lujaniene, G.
Vilimaite. -Šilobritiene, B.
Jokšas, K.
Powiązania:
https://bibliotekanauki.pl/articles/148785.pdf
Data publikacji:
2005
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
caesium
sorption
desorption
bottom sediments
Opis:
Measurements of activity concentrations and speciation of 137Cs in bottom sediments of the Curonian Lagoon were carried out in samples collected in 1999-2003. In addition, the sorption-desorption processes of caesium in disturbed bottom sediments of fresh and sea water systems were investigated in long-term experiments (up to 375 days) in order to better understand the caesium behaviour during the Baltic Sea water flooding events to the Curonian Lagoon. The modified Tessier method was used to study caesium associations with geochemical phases of bottom sediments. The effect of carbonate coatings of bottom sediments on the Cs sorption-desorption process was observed. The comparative analyses of 137Cs solid phase speciation in bottom sediments after 241 and 375 days of the sorption experiment with that of the 137Cs speciation, determined in the same sediment sample before the sorption experiment, indicated that after 375 days of sorption the equilibrium was not reached, however, the Cs distribution in geochemical phases was found to be close to equilibrium. The desorption experiments evidenced the release of caesium into solution from regular exchange complex and transfer from other phases to the frayed edge sites on the layered clay minerals with its further fixation in the crystal lattice. The remobilization of "fixed" caesium was not observed, on the contrary, the redistribution of caesium with its subsequent fixation in clay minerals was observed, and on a time scale its fixation kinetics was comparable with the sorption experiment. This study showed that flooding events of sea water contaminated with caesium can cause a significant accumulation of caesium in the bottom sediments of the Curonian Lagoon and result in the redistribution of 137Cs activity concentration in the bottom sediments from one area to another.
Źródło:
Nukleonika; 2005, 50, 1; 23-29
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microorganisms associated with charophytes under different salinity conditions
Autorzy:
Katarzyte, M.
Vaiciute, D.
Bucas, M.
Gyraite, G.
Petkuviene, J.
Powiązania:
https://bibliotekanauki.pl/articles/48156.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
microorganism
aquatic macrophyte
salinity
charophyte
primary production
bacterial abundance
fungi
brackish water
fresh water
Curonian Lagoon
Baltic Sea
Opis:
Microorganisms associated with aquatic macrophytes can in various ways interact with a plant and influence its activity and vice versa. A low-salinity intrusion into freshwater environment can affect plant-microorganism interactions. In this study, effects of different salinity conditions on the abundance and community composition of associated microorganisms with charophytes in the Curonian Lagoon were assessed. From the results, we found that short term salinity changes affected the abundance of bacteria and fungi associated with charophytes, whereas no response was reflected in the taxa composition of fungi, showing that other factors could be of more importance. The increased fungi abundances and different fungi composition in August in comparison to June was probably related to senescence process of aquatic vegetation. 8 fungi taxa were isolated and identified in association with charophytes, while higher diversity was revealed by DGGE technique.
Źródło:
Oceanologia; 2017, 59, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of climate change on the Curonian Lagoon water balance components, salinity and water temperature in the 21st century
Autorzy:
Jakimavicius, D.
Kriauciuniene, J.
Sarauskiene, D.
Powiązania:
https://bibliotekanauki.pl/articles/47688.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
climate change
Curonian Lagoon
shallow water
water balance
water temperature
water salinity
coastal environment
meteorological parameter
Źródło:
Oceanologia; 2018, 60, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of climate change on the ice conditions of the Curonian Lagoon
Autorzy:
Jakimavicius, D.
Sarauskiene, D.
Kriauciuniene, J.
Powiązania:
https://bibliotekanauki.pl/articles/2079290.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
climate change
regional climate
Curonian Lagoon
ice condition
hydrometeorological parameter
Opis:
The Curonian Lagoon is a shallow freshwater lagoon of significant environmental value in the south-eastern part of the Baltic Sea. The objective of the study was to evaluate changes of ice indices (duration, thickness and breakup dates) of this lagoon and to assess their possible tendencies in the 21st century. A methodology was developed combining the assessment of past changes (1960–2017) of ice indices and their projections in the near (2021–2040) and far (2081–2100) future periods using a hydrometeorological database, statistical methods and regression analysis as well as regional climate models and RCP scenarios. Climate change has a considerable impact on ice conditions in the Curonian Lagoon. During the historical period of 1960–2017, the Curonian Lagoon was covered with ice for 72 days a year, ice thickness reached 23 cm, whereas ice breakup was observed in the middle of March on average. According to the different scenarios, in the near and far future periods, ice duration will last 35–45 and 3–34 days, respectively. Ice thickness is projected to be 13–15 cm in the near future, whereas, at the end of the century, it is expected to decline to 0–13 cm. In the past, the lagoon ice cover remained until the middle of the third decade of February. At the end of the 21st century, RCP8.5 scenario projects the most drastic shifts: the permanent ice cover might be absent, whereas short-term ice cover is expected to melt already in the beginning of January.
Źródło:
Oceanologia; 2020, 62, 2; 164-172
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
When Balts Met Vikings at the Curonian Lagoon. Strategies of Social Representation at the Viking-Age Cemetery at Linkuhnen
Autorzy:
Jahn, Christoph
Powiązania:
https://bibliotekanauki.pl/articles/28408467.pdf
Data publikacji:
2022-12-07
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
Viking Age
East Prussia
cemetery
Scandinavians
Balts
Scalvians
Ulfberht swords
Opis:
The cemetery at Linkuhnen by River Memel had a long history of usage by local Baltic tribes, starting in the early Roman Period and continuing to the Viking Age, with the highest number of burials in the 10th–11th centuries AD. When Linkuhnen was excavated in the 1930s by German archaeologists, it was considered a Viking cemetery, since some of the grave goods (especially weaponry) seemed to bear signs of Scandinavian influences. However, the Scandinavian influence was overstated and the interaction between local Balts and Vikings was never thoroughly explained by the excavators. New research on the old excavation archives indicates that Linkuhnen was not a Viking burial ground but that incoming influences from Scandinavia brought a shift to the internal strategies of representation by local Baltic elites. The burial rite changed from simple single cremation graves to lavishly equipped collective cremation graves for members of powerful families or military units. Another remarkable feature is the large number and ‘international’ character of weaponry in the burials, some of the highest quality (Ulfberht), while the jewellery represents local types only. Unlike other Scandinavian-influenced sites on the southern Baltic coast, the Scandinavian presence in the River Memel area only led to minor interactions between Balts and Vikings, though it had a significant influence on the local Baltic elites’ internal representation of status.
Źródło:
Światowit; 2021, 60; 17-31
0082-044X
Pojawia się w:
Światowit
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of ice cover impact on hydrodynamic processes in the Curonian Lagoon through numerical modeling
Autorzy:
Idzelyte, R.
Mezine, J.
Zemlys, P.
Umgiesser, G.
Powiązania:
https://bibliotekanauki.pl/articles/2079075.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
ice cover
water circulation
shallow water
salinity
hydrodynamic process
numerical modelling
remote sensing
meteorological season
satellite observation
Curonian Lagoon
Opis:
In this study, we present an analysis of the hydrodynamic processes under ice cover in the largest lagoon in Europe – the Curonian Lagoon. By applying a finite element numerical modelling system (SHYFEM) and remote sensing ice cover data, the residual circulation, water fluxes through specific areas of the lagoon, saltwater intrusions, and water residence time (WRT) were investigated. The results, taken over an 11 year period, show that ice cover affects the circulation patterns in the lagoon by forming and shifting different gyre systems. Different circulation patterns are observed throughout all the meteorological seasons of the year. Since ice decreases circulation, water fluxes also decrease, especially in a cross-section in the middle of the lagoon, where the ice-cover suppressed wind-stress has a higher impact on the water movement rather than it has in the north. The presence of ice cover also decreases the salinity of the water in the northern part of the lagoon. In general, the salinity in the water column averaged over different periods is vertically uniform, however, a slight increase of salt concentration can be observed at the bottom layers in the Klaipėda Strait, where the difference of >1 PSU between bottom and top layers shows up on average 130 hours per year. The ice cover also decreases the saltwater intrusions into the lagoon by nearly 14 days per year. The increase of WRT is most prominent after long ice cover periods, away from the river inlets, especially in the southern part of the lagoon, where without the help of the wind action, water takes a longer time to renew than in the northern part.
Źródło:
Oceanologia; 2020, 62, 4PA; 428-442
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
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