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Wyszukujesz frazę "lagoon" wg kryterium: Temat


Tytuł:
Long term water level and surface temperature changes in the lagoons of the Southern and Eastern Baltic
Autorzy:
Dailidiene, I.
Baudler, H.
Chubarenko, B.
Navrotskaya, S.
Powiązania:
https://bibliotekanauki.pl/articles/47846.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic Sea
climate change
coastal lagoon
Curonian Lagoon
erosion
lagoon
linear regression
long-term variation
sea surface temperature
variability
Vistula Lagoon
water level
Źródło:
Oceanologia; 2011, 53, (1-TI)
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transformation of the Vistula Lagoon into a canonical domain
Autorzy:
Prosnak, W.J.
Czesnik, P.P.
Powiązania:
https://bibliotekanauki.pl/articles/48837.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
transformation
conformal mapping
Vistula Lagoon
shoreline
inversion
Opis:
The paper deals with the conformal mapping of finite, plane, simply connected domains, representing oceans, lakes, estuaries, bays, lagoons, and other natural water bodies of this kind. As a rule, they are bounded by geometrically complex shorelines. The partial differential problems investigated in Oceanology and posed in such domains have turned out to be difficult to solve for at least three reasons. They follow on from the mathematical properties of the differential equations governing such problems, from the just-mentioned geometrical complexity of the domains of solution, and from the sensitivity of the solutions to boundary conditions. In view of the last reason the contours admitted as boundaries of the domains of the solution ought to be as close to the real shorelines as possible. The obviously inaccurate approximation of the shorelines by ‘staircases’, which appears rather often (cf. Catewicz & Jankowski 1983, Lin & Chandler-Wilde 1996) as a consequence of applying finite difference methods to the solution of the partial differential problems, raises serious doubts from the point of view of Numerical Fluid Mechanics. It is recalled in the paper that such inaccuracies are not unavoidable: that complicated plane domains can be transformed accurately by means of properly applied conformal mapping onto regular, canonical domains – in particular, onto discs or squares. Such a transformation is demonstrated on the rather difficult example of the Vistula Lagoon. The transformation begins with the decomposition of the domain into five plane subdomains, each one of which is eventually transformed onto a disc. Every such result is arrived at quite independently of the remaining subdomains, by means of a set of properly selected consecutive mappings. Hence, the final canonical domain consists in this case of a system of five discs which, however, within the framework of this differential problem, have to be treated as interconnected. The interconnections involve images of four segments of straight lines, separating the original subdomains. The transformations and the resulting canonical domain presented in the paper are intended to be applied to the solution of certain hydrodynamical problems concerning the Vistula Lagoon, which will be published elsewhere.
Źródło:
Oceanologia; 2001, 43, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal fluxes of phosphate across the sediment-water interface in Edku Lagoon, Egypt
Autorzy:
Khalil, M.K.
Rifaat, A.E.
Powiązania:
https://bibliotekanauki.pl/articles/48738.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phosphorus
geochemical process
modelling
coastal lagoon
Edku Lagoon
Egypt
eutrophication
sediment water
bottom water
chemical property
seasonal fluctuation
Źródło:
Oceanologia; 2013, 55, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first report on the establishment and spread of the alien clam Rangia cuneata (Mactridae) in the Polish part of the Vistula Lagoon (Southern Baltic)
Autorzy:
Warzocha, J.
Szymanek, L.
Witalis, B.
Wodzinowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/47524.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Rangia cuneata
Mactridae
clam
alien species
Vistula Lagoon
Southern Baltic
Źródło:
Oceanologia; 2016, 58, 1
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:
Evaluation of morphodynamics of Miani Hor, a coastal lagoon of Lasbela, Balochistan, Pakistan
Autorzy:
Syed, N.A.
Siddiqa, T.
Sohoo, N.
Powiązania:
https://bibliotekanauki.pl/articles/47912.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
riverine water
coastal water
water body
coastal lagoon
Balochistan
Lasbela
Pakistan
Źródło:
Oceanologia; 2020, 62, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role of macrophytes in structuring littoral habitats in the Vistula Lagoon (Southern Baltic Sea)
Autorzy:
Pawlikowski, K.
Kornijow, R.
Powiązania:
https://bibliotekanauki.pl/articles/48542.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
macrophyte
littoral habitat
oxygenation
temperature
insulation
sediment
Vistula Lagoon
Baltic Sea
Źródło:
Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Butyltins and phenyltins in biota and sediments from the Lagoon of Venice
Autorzy:
Bortoli, A.
Troncon, A.
Dariol, S.
Pellizzato, F.
Pavoni, B.
Powiązania:
https://bibliotekanauki.pl/articles/47897.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
biota
estuarine ecosystem
phenyltin
Venice Lagoon
butyltin
sediment
organotin compound
contamination impact
Opis:
Sediments and organisms were sampled to determine organotin contents – butyltins (BTs) and phenyltins (PhTs) – at 12 locations in an estuarine ecosystem, the Lagoon of Venice, characterised by varying contamination impacts. The results showed that organotin contamination in sediments is at lower levels, ranging from 2.5±0.1 to 84±1 ng g−1 (d.w.) for ΣBTs and from 0.8±0.2 to 7±1 ng g−1 (d.w.), for ΣPHTs, than in organisms, where the highest concentrations were found in filter feeders like mussels – from 60±3 to 7632±148 ng g−1 (d.w.) for ΣBTs and from 0.80±0.01 to 4005±121 ng g−1 (d.w.) for ΣPHTs. The possible risk to human health was assessed on the basis of the consumption of edible species sampled in some areas of the lagoon.
Źródło:
Oceanologia; 2003, 45, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First record of a new alien species Limnodrilus cervix Brinkhurst, 1963 (Annelida, Clitellata) in the Vistula Lagoon (Southern Baltic Sea)
Autorzy:
Dumnicka, E.
Jablonska-Barna, I.
Rychter, A.
Powiązania:
https://bibliotekanauki.pl/articles/48122.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Limnodrilus cervix
alien species
Annelida
Clitellata
Vistula Lagoon
Baltic Sea
brackish water
Źródło:
Oceanologia; 2014, 56, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
137Cs activity distribution in the Lithuanian coastal waters of the Baltic Sea
Autorzy:
Davuliene, L.
Tarasiuk, N.
Spirkauskaite, N.
Trinkunas, G.
Valkunas, L.
Powiązania:
https://bibliotekanauki.pl/articles/48708.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
hydrodynamic model
coastal water
activity
Curonian Lagoon
concentration
Baltic Sea
Lithuania
radiocaesium
distribution
Opis:
The main 137Cs accumulation zone in the study area was found to be located at depths below the 50-metre isobath, i.e. below the layer of hydrodynamic activity. In coastal waters not influenced by the fresh water discharge from the Curonian Lagoon, 137Cs occurs mostly in soluble form. The particulate 137Cs activity concentration in the marine area affected by Curonian Lagoon water can make up 10% of the total 137Cs activity concentration. The circulation model was developed to assess the distribution of artificial radionuclides in Lithuanian territorial waters. The model was validated on the basis of data acquired during the measurement campaign in the Lithuanian part of the Baltic Sea and the Curonian Lagoon in the years 1999–2001. The model enables the 137Cs activity concentration to be simulated as a passive admixture (error within c. 15%).
Źródło:
Oceanologia; 2007, 49, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Curonian Lagoon drainage basin modelling and assessment of climate change impact
Autorzy:
Cerkasova, N.
Erturk, A.
Zemlys, P.
Denisov, V.
Umgiesser, G.
Powiązania:
https://bibliotekanauki.pl/articles/958160.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
drainage basin
modelling
Curonian Lagoon
SWAT model
Digital Elevation Model
climate change impact
Źródło:
Oceanologia; 2016, 58, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of methods for nocturnal sampling of predatory zooplankters in shallow waters
Autorzy:
Linkowski, T.B.
Kornijow, R.
Kapowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/2078998.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
plankton
zooplankton
predatory species
Neomysis integer
Leptodora kindtii
Cercopagis pengoi
shallow water
Vistula Lagoon
Opis:
The aim of the study was to assess the suitability of a plankton net (diameter of 60 cm, mesh size of 500 μm) and a column sampler (length of 200 cm, diameter of 5 cm) for estimating the density of zooplankton predatory species (Neomysis integer, Leptodora kindtii, Cercopagis pengoi). Nocturnal sampling was performed once a month (May—November 2018) in the Vistula Lagoon (southern Baltic) in the range depth of 1.3—3.6 m. Statistical analysis indicated no significant differences between the N. integer and C. pengoi density estimated by the two sampling gears. In the case of L. kindtii, the mean density obtained by the column sampler was higher when analyzing all samples together and/or deep-water samples only (p < 0.02). However, no such differences were found at shallow stations i.e. up to ca. 2 m in depth. It was assumed that the more suitable sampling equipment for estimating zooplankton abundance in a shallow, well-mixed transitional (brackish) basin is the column sampler. This type of gear, so far used mainly for sampling of micro and mesozooplankton, allows the simultaneous nocturnal collection of the entire zooplankton size spectrum, including representatives of large predatory species. The suitability of light traps for qualitative studies of zooplankton species responding positively to light under the high turbidity of the Vistula Lagoon was also investigated. The traps proved to be most useful for N. integer (100% frequency), and much less for L. kindtii (46.2%) and C. pengoi (27.3%).
Źródło:
Oceanologia; 2021, 63, 1; 71-79
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The quagga mussel (Dreissena rostriformis bugensis Andrusov, 1897) – another Ponto-Caspian dreissenid bivalve in the Southern Baltic catchment: the first record from the Szczecin Lagoon
Autorzy:
Wozniczka, A.
Wawrzyniak-Wydrowska, B.
Radziejewska, T.
Skrzypacz, A.
Powiązania:
https://bibliotekanauki.pl/articles/47586.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
non-indigenous species
quagga mussel
Dreissena rostriformis bugensis
Szczecin Lagoon
Baltic Sea
invasive species
Źródło:
Oceanologia; 2016, 58, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A turning point in the development of phytoplankton in the Vistula Lagoon (Southern Baltic Sea) at the beginning of the 21st century
Autorzy:
Kownacka, J.
Calkiewicz, J.
Kornijow, R.
Powiązania:
https://bibliotekanauki.pl/articles/2079096.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
phytoplankton community
zooplankton
multiannual change
nutrient
biomass
Vistula Lagoon
Southern Baltic Sea
21st century
Opis:
Phytoplankton community structure was studied from 2002 to 2016 in the Vistula Lagoon (southern Baltic Sea) in the context of the 2010 shift in its population, as well as the reason for this shift and its environmental impact. This evident shift was indicated by Multidimensional Scaling at the Bray Curtis similarity level of 31%. Before 2010, the primary components of phytoplankton were Cyanobacteria (up to 98% of the biomass, October 2007) and Chlorophyta (40%, July 2002). After 2010, the contribution of Cyanobacteria considerably decreased, and the proportions of other phyla increased. The total phytoplankton biomass positively correlated with phosphorus, and Cyanobacteria biomass with silica. Evident changes were also observed in the seasonal dynamics of phytoplankton. Before 2010, the highest values of biomass occurred in autumn, and were related to high biomass of Cyanobacteria. Higher biomass has been recently reached in spring, during the dominance of Ochrophyta associated with Chlorophyta, Charophyta, and Cryptophyta. Generalised additive models showed a significant decreasing trend of the total phytoplankton biomass, Cyanobacteria, Chlorophyta, and flagellates, suggesting a decrease in eutrophication. This trend is concurrent with a considerable increase in the ratio of zooplankton to phytoplankton biomass since 2010. The increased ratio, however, did not result from elevated zooplankton biomass, but from the drop in phytoplankton biomass. Therefore, the most probable reason for the decrease in phytoplankton biomass was the simultaneous decrease in the concentration of all nutrients. The potential additional impact of filtration by a new alien bivalve Rangia cuneata G. B. Sowerby I, 1832 is also discussed.
Źródło:
Oceanologia; 2020, 62, 4PA; 538-555
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Alien species of fish parasites in the coastal lakes and lagoons of the Southern Baltic
Autorzy:
Morozinska-Gogol, J.
Powiązania:
https://bibliotekanauki.pl/articles/47573.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
parasite
alien species
aquaculture
Baltic Sea
Southern Baltic
fish parasite
coastal lake
lagoon
infected fish
Opis:
Alien species are now found all over the world. New fish parasites have been unintentionally introduced with infected alien fish imported for aquaculture or have sometimes spread with their intermediate invertebrate hosts transported in the ballast waters of ships. Four alien fish parasites have been recorded in Polish coastal lakes and lagoons, all parasitising eels. Three were introduced with the final host – the Japanese eel – introduced for aquaculture (Anguillicola crassus, Pseudodactylogyrus anguillae and Pseudodactylogyrus bini) and one (Paratenuisentis ambiguus) with its sole intermediate host (Gammarus tigrinus).
Źródło:
Oceanologia; 2009, 51, 1; 105-115
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł

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