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Tytuł:
The size structure of the Mesodinium rubrum population in the Gdańsk Basin
Autorzy:
Rychert, K.
Powiązania:
https://bibliotekanauki.pl/articles/48695.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
vertical distribution
Mesodinium rubrum
Gdansk Basin
Gdansk Gulf
ciliate
size structure
Opis:
The ciliate Mesodinium rubrum Lohmann 1908 (= Myrionecta rubra Jankowski 1976) is an important phototrophic organismin the Gdańsk Basin. In June 2002 the vertical distribution and size structure of the M. rubrum population were studied. Its presence was generally observed in the whole water column (one exception was the anoxic near-bottom zone in the Gdańsk Deep) at all stations studied. Maximum abundance (18 300 cells dm−3) was recorded at 26 m depth at the station located in the inner Gulf of Gdańsk. Analysis of the size structure of the counted organisms demonstrated the co-existence of small and large cells of M. rubrum in the upper layer of the water column and a gradual increase with depth of the prevalence of large specimens. This shows that at least two forms of M. rubrum exist in the region studied. Deep migrations are probably undertaken only by relatively large organisms.
Źródło:
Oceanologia; 2004, 46, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling multistatic of target detection
Autorzy:
Klusek, Z.
Elminowicz, A.
Tęgowski, J.
Szczucka, J.
Dragan, A.
Powiązania:
https://bibliotekanauki.pl/articles/331565.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
Gdansk Gulf
chirp signals
hydroacoustic
Opis:
The paper presents a numerical approach to modelling the detection of underwater targets with a bi- or multistatic active sonar systems in the shallow water areas using different waveform signals. The results of the numerical modelling of surface, bubble clouds and bottom reverberation for CW and using up and down time-varying instantaneous frequency of chirp signals are presented. Some suggestions are made on the basis of the development and practicality for the shallow sea modeling techniques and approaches to existing sonar models. The paper reports the literature of the model components required for active sonar modelling for different propagation conditions. Some examples of scattering of CW and chirp source signals at bubble clouds and corrugated surfaces, and coherence are given. Active propagation and the system performance are surveyed and modelled adaptable to the specific environmental condition of the shallow sea area of the Gdansk Gulf.
Źródło:
Hydroacoustics; 2008, 11; 131-138
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected ionic components of the marine aerosol over the Gulf of Gdańsk
Autorzy:
Nadstazik, A.
Falkowska, L.
Powiązania:
https://bibliotekanauki.pl/articles/48208.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Gdansk Deep
aerosol origin
coastal station
Hel
Gdansk Gulf
marine aerosol
macroelement
nitrate
chloride loss
Opis:
Aerosol samples were collected in May 1997 at a routine off-shore measurement station in the Gdańsk Deep region and at Hel, the latter being a coastal station situated at the tip of the Hel Peninsula. Concentrations of NO− 3 , Cl−, Na+, Mg2+, K+ and Ca2+ were measured simultaneously at both stations. The sea influences the chemical composition of aerosols in the coastal zone of the Gulf of Gdańsk regardless of season, time of day or direction of advection. Sodium chloride was always present in aerosols in the form of large particles originating from seawater. Besides the marine chloride and nitrate, additional amounts of these ions could have been of terrigenous origin. Sodium and chloride concentrations were dominant in the total mass of aerosols at both stations; however, these concentrations were three times higher at the marine station. Similarly, the concentrations of ions originating from seawater, like magnesium and calcium, were, on average, three times higher at the marine station. The chemical composition of aerosols and air over the Gulf of Gdańsk was modified through the evaporation of chloride from the marine salt particles in reactions with gaseous nitric and sulphuric acids. A certain deficit of chloride versus sodium ions was noted. At the marine station the Cl−/Na+ ratio reached 0.89 ± 0.2, on average, while over the land station it was 0.93 ± 0.25, i.e. lower than the seawater standard.
Źródło:
Oceanologia; 2001, 43, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first recorded bloom of Pseudochattonella farcimen (Dictyochophyceae, Heterokonta), (Riisberg I., 2008) in the Gulf of Gdańsk
Autorzy:
Lotocka, M.
Powiązania:
https://bibliotekanauki.pl/articles/48098.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Heterokonta
Gdansk Gulf
Pseudochattonella farcimen
bloom
Dictyochophyceae
Opis:
In April 2001 a local bloom of the heterokont phytoflagellate Pseudochattonella farcimen (Riisberg I., 2008) (initially named Chattonella aff. verruculosa) was observed for the first time in the southern part of the Gulf of Gdańsk. The species occurred in high cell densities: the count was 11.5×106 cells dm−3 and the biomass 927.5 μgC dm−3.
Źródło:
Oceanologia; 2009, 51, 1; 139-143
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of the photosynthetic quotient (pq) in the Gulf of Gdansk (southern Baltic)
Obliczenia współczynnika fotosyntetycznego (pq) dla Zatoki Gdańskiej (Bałtyk Południowy)
Autorzy:
Wielgat-Rychert, M.
Rychert, K.
Witek, Z.
Zalewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/84859.pdf
Data publikacji:
2017
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
calculation
photosynthetic quotient
Gdansk Gulf
Baltic Sea
Opis:
The photosynthetic quotient (PQ) is defined as the molar ratio of oxygen released to the carbon dioxide assimilated during photosynthesis. Calculation of correct PQ values of natural phytoplankton populations is crucial for understanding of carbon budgets but often result in values that differ highly from the expected stoichiometric proportions of photosynthetic products. In the present study, measurements of primary production, that is, CO2 assimilation, performed with the standard isotopic method (14C) and oxygen release estimated during photosynthesis with the light-and-dark bottle method were compared to calculate PQ in the southern Baltic (Gulf of Gdańsk, Poland). The PQ average was 1.28 (ANOVA; F = 872; R2 = 0.92; n = 77; p < 0.001). Neither nitrogen source nor phytoplankton composition was noted to impact PQ values. Very high PQ values in the lower range of production rates (that cannot be explained by the stoichiometric proportion of photosynthesis products) were interpreted as artifacts related to the lower sensitivity of the oxygen method compared to that of the 14C method.
Współczynnik fotosyntetyczny (PQ) definiowany jest jako molowy stosunek uwolnionego tlenu do węgla związanego w procesie fotosyntezy. Obliczenie poprawnej wartości PQ dla populacji fitoplanktonu występujących w środowisku jest zasadnicze dla sporządzenia poprawnego bilansu węgla, ale często obliczone z pomiarów wartości PQ różnią się znacznie od proporcji stechiometrycznych tlenu i węgla w produktach fotosyntezy. W niniejszej pracy przeprowadzono pomiary asymilacji węgla, czyli produkcji pierwotnej, przy użyciu standardowej metody izotopowej (z izotopem węgla 14C) oraz pomiary uwolnionego tlenu za pomocą metody jasnych i ciemnych butelek i na tej podstawie obliczono współczynnik fotosyntetyczny dla Bałtyku południowego (Zatoka Gdańska, Polska). Obliczona średnia wartość PQ wynosiła 1,28 (ANOVA; F = 872; R2 = 0,92; n = 77; p < 0,001). Nie odnotowano, aby wartości PQ zależały od rodzaju azotu wykorzystanego w procesie asymilacji (azot azotanowy czy amonowy) lub od składu fitoplanktonu. Bardzo wysokie wartości PQ obliczone w zakresie niskich wartości produkcji pierwotnej (wartości, które nie zgadzają się zupełnie z proporcjami stechiometrycznymi produktów fotosyntezy) zostały zinterpretowane jako artefakty wynikające z metodyki pomiarowej, ponieważ metoda tlenowa ma znacznie mniejszą czułość niż metoda izotopowa.
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2017, 21
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Abundance and species composition of plankton in the Gulf of Gdańsk near the planned underwater outfall of the Gdańsk-Wschód (Gdańsk-East) sewage treatment plant
Autorzy:
Zmijewska, M.I.
Niemkiewicz, E.
Bielecka, L.
Powiązania:
https://bibliotekanauki.pl/articles/48867.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
biomass
abundance
plankton
underwater outfall
Baltic Sea
phytoplankton
Gdansk city
coastal area
treatment plant
zooplankton
Gdansk Gulf
Vistula River
distribution
Opis:
The aim of this paper is to determine the current biological state of life in the pelagic zone of the Gulf of Gdańsk in relation to the planned start-up of an underwater outfall which will discharge sewage from the Gdańsk–Wschód (Gdańsk–East) sewage treatment plant. The plankton material was collected during two research cruises in July and October 1998. The samples were taken at 15 stations in four profiles located near Wyspa Sobieszewska (Sobieszewo Island), perpendicular to the coastline. Both the taxonomic and numerical structure of phytoplankton and zooplankton were typical of the coastal area of the Gulf of Gdańsk. The species diversity depends on hydrological conditions, mainly input from the River Wisła (Vistula). The abundance and biomass of phytoplankton in 1998 were several times lower than in 1994 and 1995 in the area off Górki Wschodnie, the profile located closest to the planned construction site. This could have been caused by generally lower temperatures in 1998 in comparison to previous years. In the investigated area only traces of algal eutrophication indicator species were noted. However, potentially toxic species were confirmed and were most abundant near the Wisła mouth. The highest concentrations of pelagic fauna occur in the shallowest area closest to the shoreline. Long-term observations of the dynamics of the variations in abundance and species composition indicate the increasing significance of one particular species – Acartia bifilosa.
Źródło:
Oceanologia; 2000, 42, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conformal mapping of the Gulf of Gdańsk onto a canonical domain
Autorzy:
Czesnik, P.P.
Prosnak, W.J.
Powiązania:
https://bibliotekanauki.pl/articles/48629.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Schwarz-Christoffel function
solution
conformal mapping
shoreline
Gdansk Gulf
inversion
Opis:
The paper deals with the conformal mapping of a plane, finite, simply connected domain, representing the southern segment of the Gulf of Gdańsk, enclosed from the North by a parallel, tangential to Cape Rozewie. The segment contains the Hel Peninsula. The method of double decomposition, presented in Prosnak & Cześnik (2001), is applied to the transformation of such an original domain onto a canonical one, which consists of two separate unit discs. The first decomposition concerns the domain which is split into two adjacent subdomains by means of a segment of a straight line. The second decomposition involves two holomorphic functions, each one mapping a subdomain onto a separate disc. The decomposition consists in replacing the function by a sequence of simple ones, so that the mapping is performed step-wise. Each sequence starts with the Schwarz-Christoffel function, the last step consisting in an inversion that transforms an infinite circular domain onto a disc. The data for the problem is contained in the Annex, and is represented by two sets of rectangular coordinates defining consecutive discrete points of the contours bounding the subdomains. The solution to the problem consists of:
– two sets of functions, consecutively transforming each of the subdomains;
– the numerical values of the parameters of these functions;
– a set of figures illustrating the consecutive transformations. The accuracy of the first, and of the penultimate transformation are given, because only in the case of these two functions do the unknown coefficients have to be determined by means of a suitable iterative process. The coefficients of all the remaining functions are evaluated from exact formulae. It should be recalled that the depth of the Gulf of Gdańsk varies considerably – from a few to 110 metres – the gradients of the bottom being rather large. Therefore, the domain of the solution for any mathematical problem describing the hydrodynamical phenomena occurring in the Gulf is usually taken to be three-dimensional. Nevertheless, the paper deals with the transformation of the free surface of the Gulf, assumed as plane. It should be emphasized that this assumption does not mean that the whole domain of the solution has to be regarded as plane.
Źródło:
Oceanologia; 2002, 44, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of humic substances on results of the spectrophotometric (TPTZ) analysis of monosaccharides
Autorzy:
Grzybowski, W.
Dudzinska, M.
Powiązania:
https://bibliotekanauki.pl/articles/48161.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
monosaccharide analysis
aquatic substance
humic substance
spectrophotometry
water
Gdansk Gulf
Opis:
A spectrophotometric method of monosaccharide analysis was assessed with regard to its non-selectivity towards humic substances. Analysis of model solutions showed that it responds positively to both marine and terrestrial humics. The systematic error in monosaccharide analysis (in glucose equivalents) was 0.18–0.20mg per 1 mg of Aldrich humic acid and 0.11–0.12 mg per 1 mg of humic substances isolated from Gulf of Gdańsk water.
Źródło:
Oceanologia; 2004, 46, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Palaemon elegans - a new component of the Gulf of Gdańsk macrofauna
Autorzy:
Janas, U.
Zarzycki, T.
Kozik, P.
Powiązania:
https://bibliotekanauki.pl/articles/48380.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal water
Palaemon elegans
macrofauna
Baltic Sea
Gdansk Gulf
prawn
Opis:
The present paper reports on the occurrence of the prawn Palaemon elegans Rathke in the coastal waters of the Gulf of Gdańsk in the years 2002–2003, and in other regions of the Baltic Sea as recorded by various authors.
Źródło:
Oceanologia; 2004, 46, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first recorded bloom of Prorocentrum minimum (Pavillard) Schiller in the coastal zone of the Gulf of Gdańsk
Autorzy:
Witek, B.
Plinski, M.
Powiązania:
https://bibliotekanauki.pl/articles/47924.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
coastal water
Prorocentrum minimum
shape
bloom
phytoplankton
Gdansk Gulf
Opis:
Prorocentrum minimum (Pavillard) Schiller has occurred in the Gulf of Gdańsk in low abundance for several years. However, in summer 1997 a significant increase in the numbers of cells was noted. In the same year a P. minimum bloom was recorded for the first time in one of the harbour basins in Gdynia, giving rise to a brown-red coloration of the water.
Źródło:
Oceanologia; 2000, 42, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Recent trends in the prevalence of neoplasia in the Baltic clam Macoma balthica (L.) from the Gulf of Gdańsk (Baltic Sea)
Autorzy:
Smolarz, K.
Thiriot-Quievreux, C.
Wolowicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/48670.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Baltic clam
neoplasia
Macoma balthica
Baltic Sea
Gdansk Gulf
pollutant
cancer
Opis:
This study discusses the occurrence of neoplasia in the Baltic clam Macoma balthica from the Gulf of Gdańsk in recent years and investigates potential relationships between toxic compounds in the environment and the presence of the cancer. The disease was identified at four sampling stations during 1999–2002. Comparison with previous results highlighted the substantial prevalence of the tumour between 1998 and 2002. The prevalence of the cancer was strongly dependent on the sampling location (p < 0.001): it was highest at sampling point H45 (the deepest part of the gulf) and lowest at station PB30 (central part of the gulf). Monthly studies showed a trend towards an increasing prevalence of neoplasia during the warm months. However, over several sampling months no strong statistical correlation between the prevalence of the disease and the sampling time was found. The results of the study suggest that several environmental factors may promote the progress of the cancer in M. balthica from the Gulf of Gdańsk: it is most probably an indirect effect of pollution, although causality cannot be proven at this stage. Seriously polluted and exhibiting a considerable asymmetry of contamination, the ecosystem of the gulf provides an ideal environment for testing potential cause-effect relationships between pollutants and their biological effects.
Źródło:
Oceanologia; 2005, 47, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary results on low molecular weight organic substances dissolved in the waters of the Gulf of Gdańsk
Autorzy:
Grzybowski, W.
Pempkowiak, J.
Powiązania:
https://bibliotekanauki.pl/articles/48037.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
absorbance
ultrafiltration
organic carbon
water
Gdansk Gulf
organic substance
molecular weight
Opis:
The content of low molecular weight LMW (<1000 Da) dissolved organic substances was determined by ultrafiltration (concentration factor of 2) in different water samples collected in the Gulf of Gdańsk. The proportion of this fraction (based on organic carbon concentration) ranged from 24 to 57%. The lowest percentage was detected in riverine samples. The DOC concentrations in ultrafiltrates was similar in all the samples analysed. The absorbance proportion (at 250 nm) due to the low molecular fraction in the overall absorbance ranged from 14 to 45% and in all but one sample was lower than the DOC percentage. There was no relationship between DOC and absorbance in the LMW fractions (r2 = 0.08), in contrast to the characteristics of the ‘bulk’ samples (r2 = 0.88).
Źródło:
Oceanologia; 2003, 45, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first record of parasites in Gammarus tigrinus Sexton, 1939 - a recent newcomer to the Gulf of Gdańsk
Autorzy:
Rolbiecki, L.
Normant, M.
Powiązania:
https://bibliotekanauki.pl/articles/47680.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
amphipod
parasite
Gammarus tigrinus
Maritrema subdolum
parasitism
Baltic Sea
Gdansk Gulf
Opis:
The present paper reports for the first time on the occurrence of the parasite Maritrema subdolum in the amphipod Gammarus tigrinus, a non-native species in the Gulf of Gdańsk.
Źródło:
Oceanologia; 2005, 47, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monosaccharides in the water of the Gulf of Gdańsk
Autorzy:
Grzybowski, W.
Maksymiuk, A.
Powiązania:
https://bibliotekanauki.pl/articles/47542.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
organic matter
saccharide
monosaccharide
sea water
organic carbon
Baltic Sea
Gdansk Gulf
Opis:
The concentration of monosaccharides in samples collected in the Gulf of Gdańsk area was determined in water filtered through ∼0.8 μm pore size filters. Seawater concentrations ranged from about 0.2 to 1.1 mg C dm−3, the highest values being detected at the mouth of the river Vistula. Seasonality was detectable in the data distribution; the majority of autumn values lay within the 0.2–0.4 range while concentrations in the spring samples were higher and the values more widely scattered. Measurements of monosaccharide concentrations at selected points during the whole observation period showed that values increased from spring to autumn as much as 5-fold. Concomitant analyses in Vistula river water yielded concentrations from 0.4 to 1.2 mg C dm−3. These latter values were all higher than those recorded in seawater in the corresponding months.
Źródło:
Oceanologia; 2001, 43, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The first observed bloom of the diatom Dactyliosolen fragilissimus (Bergon) Hasle 1996 in the Gulf of Gdańsk
Autorzy:
Lotocka, M.
Powiązania:
https://bibliotekanauki.pl/articles/47455.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
biomass
coastal water
bloom
Baltic Sea
phytoplankton
Gdansk Gulf
diatom
Dactyliosolen fragilissimus
Opis:
The diatom Dactyliosolen fragilissimus (Bergon) Hasle 1996 (syn. Rhizosolenia fragilissima Bergon 1903) occurs in the western Baltic Sea predominantly in summer, sometimes forming blooms. In autumn 2005, numerous D. fragilissimus cells were observed for the first time in the coastal waters of the Gulf of Gdańsk. In November 2005a bloom was formed: at its peak, the diatom count was 1.1×106 cells dm−3 and its biomass was 8.9 mg dm−3.
Źródło:
Oceanologia; 2006, 48, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oocyte hydration in round goby Neogobius melanostomus from the Gulf of Gdańsk: another invasive strategy?
Autorzy:
Kalamarz-Kubiak, H.
Guellard, T.
Powiązania:
https://bibliotekanauki.pl/articles/47646.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
oocyte
hydration
round goby
Neogobius melanostomus
non-native species
estradiol
Gdansk Gulf
Źródło:
Oceanologia; 2019, 61, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dependence between bacterial production and environmental conditions in the Gulf of Gdańsk
Autorzy:
Ameryk, A.
Podgorska, B.
Witek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/48815.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
primary production
Baltic Sea
Gdansk Gulf
environment condition
bacterial production
heterotrophic bacteria
Opis:
Bacterial production, primary production and a number of other environmental factors were measured during six cruises in the Gulf of Gdańsk conducted in various seasons from 1995 to 2001. Bacterial production (BP) in the epipelagic layer ranged from 1.5% (April) to 80% (July) of the gross primary production (PP). Significant differences were observed between the BP/PP ratios in estuarine and open-water areas. The highest values were recorded in the coastal area and near the mouth of the river Vistula. It suggests that allochthonous organic matter has a great influence on BP. The correlations between particular parameters and regression analyses indicated that BP in the Gulf of Gdańsk depended on temperature, organic nitrogen concentration, PP, chlorophyll a concentration, organic phosphorus concentration, salinity and biochemical oxygen demand. Of all the independent variables, the temperature had the greatest impact on BP (R2 = 0.62). There was an inverse parabolic relationship between bacterial production and temperature. It appears that above a temperature of 12◦C bacterial production depended on substrates to a higher degree than on temperature. The negative correlation between BP and concentrations of mineral nitrogen and phosphorus in the annual cycle were probably due to an indirect dependence. A multiple regression equation, which included temperature and organic phosphorus concentrations, explained 78% of the variation in BP. Increasing BP resulted in an increasing biomass of bacterivorous nanoflagellates and of bacterivorous ciliates, which is indicative of bottom-up control in this segment of the trophic chain.
Źródło:
Oceanologia; 2005, 47, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hemimysis anomala G.O. Sars, 1907 (Crustacea, Mysidacea) - first record in the Gulf of Gdańsk
Autorzy:
Janas, U.
Wysocki, P.
Powiązania:
https://bibliotekanauki.pl/articles/47696.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal water
Mysidacea
Baltic Sea
Gdansk Gulf
Hemimysis anomala
Crustacea
non-indigenous species
Opis:
The present paper reports on the occurrence of Hemimysis anomala G.O. Sars, 1907 (Crustacea, Mysidacea) in the coastal waters of the Gulf of Gdańsk in the years 2002–2005.
Źródło:
Oceanologia; 2005, 47, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stability of cyanotoxins, microcystin-LR, microcystin-RR and nodularin in seawater and BG-11 medium of different salinity
Autorzy:
Mazur, H.
Plinski, M.
Powiązania:
https://bibliotekanauki.pl/articles/48388.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
cyanotoxin
microcystin-LR
biodegradation
microcystin-RR
Gdansk Gulf
Cyanoprokaryota
hepatotoxin
sea water
nodularin
Opis:
Microcystins and nodularin are potent hepatotoxins produced by fresh and seawater cyanobacteria.T he persistence of three hepatotoxins – microcystin-LR, microcystin-RR and nodularin – was investigated in sterile BG-11 medium of different salinity and in water collected from the Gulf of Gdańsk.After 21 days of incubation at 17±1◦ C and constant illumination of about 40 μmol photon m−2 s−1 the concentration of toxins decreased by about 30–37%.N o significant changes in toxin concentration in the BG-11 media of different salinity were observed. When toxins were incubated in non-sterile seawater, their concentrations decreased markedly.It is likely that some strains of bacteria are responsible for the breakdown of the toxins.No dularin turned out to be more resistant to biodegradation than the two microcystins.The influence of certain components of cyanobacteria cells on the accelerated rate of toxin degradation was also considered.
Źródło:
Oceanologia; 2001, 43, 3; 329-339
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Colonization of the round goby, Neogobius melanostomus [Gobiidae] by parasites in the new environment of the Gulf of Gdansk [Southern Baltic]
Autorzy:
Rokicki, J.
Rolbiecki, L.
Powiązania:
https://bibliotekanauki.pl/articles/2147696.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Gobiidae
new environment
Baltic Sea
Gdansk Gulf
Neogobius melanostomus
round goby
colonization
Opis:
The round goby (Neogobius melanostomus) is a non-indigenous species in the Baltic Sea, introduced to its waters (the Gulf of Gdańsk) from the Black, Azov, and Caspian Seas. For this reason, an attempt was made to determine the species' parasitic fauna in its new environment. Within 1994-2000, a total of 201 round goby specimens caught in the Gulf of Gdańsk were examined. The parasites found represented protozoans (Trichodina domerguei domerguei), digencans (Diplostomum spp. metacercariae), cestodes (Bothriocephalus scorpii, plerocercoids), nematodes (Hysterothylacium aduncum L₃, L₄, and adults), and canthocephalans (Echinorhynchus gadi and Pomphorhynchus laevis). The parasitic species found are common in the Gulf of Gdańsk. It should be emphasized that, since the round goby has only recently appeared in the Gulf, the parasitic fauna of this fish is not yet complete.
Źródło:
Wiadomości Parazytologiczne; 2002, 48, 2; 197-200
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Colonization of the round goby, Neogobius melanostomus [Gobiidae] by parasites in the new environment of the Gulf of Gdansk [Southern Baltic]
Autorzy:
Rokicki, J
Rolbiecki, L.
Powiązania:
https://bibliotekanauki.pl/articles/838628.pdf
Data publikacji:
2002
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Gobiidae
new environment
Baltic Sea
Gdansk Gulf
Neogobius melanostomus
round goby
colonization
Opis:
The round goby (Neogobius melanostomus) is a non-indigenous species in the Baltic Sea, introduced to its waters (the Gulf of Gdańsk) from the Black, Azov, and Caspian Seas. For this reason, an attempt was made to determine the species' parasitic fauna in its new environment. Within 1994-2000, a total of 201 round goby specimens caught in the Gulf of Gdańsk were examined. The parasites found represented protozoans (Trichodina domerguei domerguei), digencans (Diplostomum spp. metacercariae), cestodes (Bothriocephalus scorpii, plerocercoids), nematodes (Hysterothylacium aduncum L₃, L₄, and adults), and canthocephalans (Echinorhynchus gadi and Pomphorhynchus laevis). The parasitic species found are common in the Gulf of Gdańsk. It should be emphasized that, since the round goby has only recently appeared in the Gulf, the parasitic fauna of this fish is not yet complete.
Źródło:
Annals of Parasitology; 2002, 48, 2
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New data on benthic Naididae (Annelida, Clitellata) in Polish brackish waters
Autorzy:
Marszewska, L.
Dumnicka, E.
Normant-Saremba, M.
Powiązania:
https://bibliotekanauki.pl/articles/47963.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Oligochaeta
macrozoobenthos
Gdansk Gulf
Baltic Sea
brackish water
new data
Naididae
Annelida
Clitellata
Opis:
This paper presents new findings on oligochaete species inhabiting Polish brackish waters. Identification of 455 specimens collected in September 2013 and July 2014 during the macrozoobenthos survey in the Port of Gdynia (the Gulf of Gdańsk, the southern Baltic Sea, Poland) showed the presence of six species belonging to two subfamilies Naidinae and Tubificinae.
Źródło:
Oceanologia; 2017, 59, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Large red cyanobacterial mats (Spirulina subsalsa Oersted ex Gomont) in the shallow sublittoral of the Southern Baltic
Autorzy:
Wlodarska-Kowalczuk, M.
Balazy, P.
Kobos, J.
Wiktor, J.
Zajaczkowski, M.
Moskal, W.
Powiązania:
https://bibliotekanauki.pl/articles/48400.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Cyanoprokaryota
Spirulina subsalsa
diatom
nematode
algal mat
Baltic Sea
Gdansk Gulf
coastal water
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Canthaxanthin in recent sediments as an indicator of heterocystous cyanobacteria in coastal waters
Autorzy:
Krajewska, M.
Szymczak-Zyla, M.
Kobos, J.
Witak, M.
Kowalewska, G.
Powiązania:
https://bibliotekanauki.pl/articles/47440.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Cyanoprokaryota
chlorophyll a
coastal water
carotenoid
chloropigment
canthaxanthin
Gdansk Gulf
Baltic Sea
recent sediment
Źródło:
Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal variability of benthic ammonium release in the surface sediments of the Gulf of Gdańsk (Southern Baltic Sea)
Autorzy:
Maksymowska-Brossard, D.
Piekarek-Jankowska, H.
Powiązania:
https://bibliotekanauki.pl/articles/48426.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
ammonium
spatial variation
seasonal variation
Baltic Sea
sediment
Gdansk Gulf
benthic flux
benthic ammonium
Opis:
This paper describes the seasonal and spatial variations of diffusive sediment– water ammonium fluxes in the western part of the Gulf of Gdańsk (southern Baltic). It assesses the potential environmental controls of these fluxes, such as the inflow of organic matter to bottom sediments and its quality, temperature-induced degradation of organic matter, and the redox potential of sediments. Ammonium fluxes, calculated using Fick’s first law, were always in the direction from the sediment into the water column and differed significantly with respect to sediment type. Fluxes were most intensive in sediments with the highest silt-clay fraction located in the deepest parts of the study area. The mean annual diffusive fluxes of ammonium from sediments to near-bottom water were estimated at 5.24 tonnes km−2 year−1 for silty-clays, 1.85 tonnes km−2 year−1 for silty-sands and 1.03 tonnes km−2 year−1 for sandy sediments. There was a high seasonal variation, with the greatest ammonium release in summer and early autumn, when the temperature of near-bottom water was the highest. On the basis of the calculated diffusive ammonium fluxes, we estimated that approximately 2700 tonnes of N–NH+4 are released annually from the surface sediments of the western part of the Gulf of Gdańsk, providing a minimum of 10% of the mineral nitrogen essential for primary production in surface waters. Our results are undoubtedly underestimated, as we disregarded advective ammonium fluxes, which in some areas of the Gulf of Gdańsk could well be comparable to diffusive fluxes.
Źródło:
Oceanologia; 2001, 43, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tracking trends in eutrophication based on pigments in recent coastal sediments
Autorzy:
Szymczak-Zyla, M.
Krajewska, M.
Winogradow, A.
Zaborska, A.
Breedveld, G.D.
Kowalewska, G.
Powiązania:
https://bibliotekanauki.pl/articles/48555.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
eutrophication
sea water property
pigment
marker
coastal area
sediment
chloropigment
Gdansk Gulf
Norwegian fjord
Opis:
Eutrophication in two different coastal areas — the Gulf of Gdańsk (southern Baltic) and the Oslofjord/Drammensfjord (Norway) — both subject to human pressure and with restricted water exchange with adjacent seas, was investigated and compared. Sediment cores (up to 20 cm long) were collected at 12 stations using a core sampler, 6 in each of the two areas, and divided into sub-samples. The physicochemical parameters characterizing the adjacent water column and near-bottom water, i.e. salinity, oxygen concentration and temperature, were measured during sample collection. Chlorophylls-a, -b and -c, their derivatives and selected carotenoids were determined for all the samples, as were additional parameters characterizing the sediments, i.e. Corg, Ntot, d13C and d15N, grain size. 210Pb activity was also determined and on that basis sediment mixing and accumulation rates were estimated. The distribution of pigments in sediments was related to environmental conditions, the sampling site location and sediment characteristics. The results are in agreement with other observations that eutrophication in the Gulf of Gdańsk has increased, especially since the 1970s, whereas in the Oslofjord it decreased during the same period. The pigments are better preserved in inner Oslofjord sediments than in those from the Gulf of Gdańsk. The results demonstrate that the sum of chloropigments-a insediments calculated per dry weight of sediments is a valuable measure of eutrophication, providing that the monitoring site is selected properly, i.e. sediments are hypoxic/anoxic and non-mixed. Besides, the results confirm previous observations that the percentages of particular chlorophyll-a derivatives in the sum of chloropigments-a are universal markers of environmental conditions in a basin. The ratios of chloropigments-b and chlorophylls-c to the sum of chloropigments-a (SChlns-b/ SChlns-a; Chls-c/SChlns-a) may by applied as complementary markers of freshwater and marine organic matter input, respectively.
Źródło:
Oceanologia; 2017, 59, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evadne anonyx G. O. Sars, 1897 – the first record of this Ponto-Caspian cladoceran in the Gulf of Gdansk (Baltic Sea)
Autorzy:
Bielecka, L.
Mudrak-Cegiolka, S.
Kalarus, M.
Powiązania:
https://bibliotekanauki.pl/articles/48936.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Evadne anonyx
non-indigenous species
development stage
salinity
water temperature
Gdansk Gulf
Baltic Sea
Źródło:
Oceanologia; 2014, 56, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First report on intersex in invasive round goby Neogobius melanostomus from the Baltic Sea (Gulf of Gdansk, Poland)
Autorzy:
Guellard, T.
Sokolowska, E.
Arciszewski, B.
Powiązania:
https://bibliotekanauki.pl/articles/48968.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
intersex
round goby
Neogobius melanostomus
urogenital papilla
endocrine disruption
Baltic Sea
Gdansk Gulf
Polska
Źródło:
Oceanologia; 2015, 57, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Seasonal and annual changes in the macrozoobenthic populations of the Gulf of Gdańsk with respect to hypoxia and hydrogen sulphide
Autorzy:
Janas, U.
Wocial, J.
Szaniawska, A.
Powiązania:
https://bibliotekanauki.pl/articles/47993.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
benthic macrofauna
macrozoobenthos
Macoma balthica
hypoxia
annual change
Gdansk Gulf
hydrogen sulphide
seasonal change
Opis:
This study was designed to investigate seasonal and annual changes in the benthic macrofauna in relation to changes in hydrogen sulphide concentration in the sediment and the oxygen content in the water column. Data were collected over a three-year period from 1994 to 1997. The benthic macrofauna inhabiting the sediments of the Gulf of Gdańsk, in which H2S is permanently present, consists mostly of species with a high tolerance to oxygen deficiency and the presence of H2S. These species are: Macoma balthica, Harmothoe sarsi, Nereis diversicolor, Saduria entomon and Halicryptus spinulosus, as well as Pontoporeia femorata and Corophium volutator, which are more sensitive to these factors. In 1996–1997 a decline in the abundance of almost all benthic species, and especially of the bivalve M. balthica at all the stations was observed in comparison to 1994–1995.
Źródło:
Oceanologia; 2004, 46, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epibionts and parasites on crustaceans (Copepoda, Cladocera, Cirripedia larvae) inhabiting the Gulf of Gdansk (Baltic Sea) in very large numbers
Autorzy:
Bielecka, L.
Boehnke, R.
Powiązania:
https://bibliotekanauki.pl/articles/958162.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
crustacean zooplankton
epibiont
parasite
Copepoda
Cladocera
Cirripedia
Gdansk Gulf
Baltic Sea
marine environment
eutrophication
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parvatrema affinis [Jameson et Nicoll, 1913] James, 1964 in the Baltic clam Macoma balthica [Mollusca: Bivalvia] in the Gulf of Gdansk
Autorzy:
Rolbiecki, L.
Kanarek, G.
Stachnik, M.
Powiązania:
https://bibliotekanauki.pl/articles/838893.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Baltic clam
parasite
Bivalvia
Mollusca
Parvatrema affinis
Macoma balthica
Baltic Sea
Gdansk Gulf
host
Źródło:
Annals of Parasitology; 2007, 53, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parvatrema affinis [Jameson et Nicoll, 1913] James, 1964 in the Baltic clam Macoma balthica [Mollusca: Bivalvia] in the Gulf of Gdańsk
Autorzy:
Rolbiecki, L.
Kanarek, G.
Stachnik, M.
Powiązania:
https://bibliotekanauki.pl/articles/2143844.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Baltic clam
parasite
Bivalvia
Mollusca
Parvatrema affinis
Macoma balthica
Baltic Sea
Gdansk Gulf
host
Opis:
Background. Macoma balthica is the major zoobenthic species in the Gulf of Gdańsk. Material. Two (4.2%) of the 48 M. balthica specimens collected in 2002 from the depth of 40 m were found to harbour metacercariae−containing sporocysts of Parvatrema affinis (Jameson et Nicoll, 1913) James, 1964. Results. The paper reports morphoanatomical dimensions of 30 sporocysts and metacercariae. Due to the common occurrence of the intermediate (Macoma balthica) and definitive (anseriform and charadriiform birds) hosts of P. affinis in the Gulf of Gdańsk, the trematodes are regarded as a constant component of the local biocoenose.
Źródło:
Wiadomości Parazytologiczne; 2007, 53, 1; 25-27
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Budget of 90Sr in the Gulf of Gdansk (Southern Baltic Sea)
Autorzy:
Saniewski, M.
Zalewska, T.
Powiązania:
https://bibliotekanauki.pl/articles/47421.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
Gdansk Gulf
Baltic Sea
radioactivity
90 strontium
sediment deposition
sea water
atmospheric deposition
radionuclide
budget
Źródło:
Oceanologia; 2018, 60, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of petroleum pollutants in coastal waters of the Gulf of Gdańsk
Autorzy:
Stelmaszewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/48150.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
oil content
pollutant determination
fluorescence
coastal water
Gdansk Gulf
petroleum substance
sea water
petroleum pollution
Opis:
The paper presents an improved method of determining petroleum pollutants in water based on fluorescence, which allows the oil content to be estimated with an accuracy better than 50%. The method was used to measure the oil content in Gulf of Gdańsk seawater sampled at Gdynia-Orłowo between January 2006 and September 2008. The 174 measurements made during this period ranged from 1 to 120 μg kg−1, but the majority did not exceed 20 μg kg−1. The most probable level of contamination is c. 5 μg kg−1.
Źródło:
Oceanologia; 2009, 51, 1; 85-92
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of primary production and pelagic community respiration rates in the coastal zone of the Gulf of Gdańsk
Autorzy:
York, J.K.
Witek, Z.
Labudda, S.
Ochocki, S.
Powiązania:
https://bibliotekanauki.pl/articles/48283.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
oxygen
Baltic Sea
coastal water
Gdansk Gulf
organic matter
community respiration
primary production
coastal zone
Opis:
The organic matter production/respiration balance in the coastal water column was examined, both the primary production and community respiration being measured with the oxygen light-and-dark bottle method. Community respiration (CR) was always lower than the gross primary production (GPP) measured at a standard light intensity of 390 μE m−2 s−1, which amounted, on average, to 30% of GPP. During most of the in situ sampling period, the coastal system (6–7 m depth) was found to be autotrophic, with depth-integrated GPP ranging from 6.7 mmoles O2 m−2 d−1 in December to 214.2 mmoles O2 m−2 d−1 in August, and CR ranging correspondingly from 6.0 to 177.7 mmoles O2 m−2 d−1. However, on some occasions heterotrophic conditions were recorded: depth-integrated GPP
Źródło:
Oceanologia; 2001, 43, 3; 365-370
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parameterisation of a population model for Acartia spp. in the Southern Baltic Sea. Part 1. Development time
Autorzy:
Dzierzbicka-Glowacka, L.
Lemieszek, A.
Zmijewska, M.I.
Powiązania:
https://bibliotekanauki.pl/articles/49034.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
population dynamics
environment condition
Baltic Sea
development
Acartia bifilosa
Acartia
growth
Gdansk Gulf
population model
Opis:
The copepod model (see Dzierzbicka-Głowacka 2005b),red uced to a zero-dimensional population model (Fennel 2001,S tegert et al. 2007),i s calibrated for Acartia spp. under the environmental conditions typical of the southern Baltic Sea. Most of the coefficients used in the model are taken from the literature,co ntaining values from various published studies and parameters derived for similar species. The parameters for growth are presented in Part 1; those for population dynamics are given in Part 2. Ingestion rates,whic h are dependent on developmental stage, food supply,temp erature and weight of the animals, are estimated for Acartia bifilosa at 15◦C from the Gdańsk Deep after the experimental data of Ciszewski & Witek (1977). In Part 1 the model presents the change in mean individual mass in successive stages. Quantitative formulae are obtained describing the effects of temperature and food concentration on the development time of Acartia spp. for each of the model stage groups. The generation time during the seasons in the upper layer of the Gdańsk Deep is also determined. The simulations computed here are similar to the experimental results. Part 2 (Dzierzbicka-Głowacka et al. 2009 – this issue) will evaluate egg production as a function of the above-mentioned parameters,temp erature and food availability.
Źródło:
Oceanologia; 2009, 51, 2; 165-184
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can the dab [Limanda limanda] be a paratenic host of Anguillicola crassus [Nematoda: Dracunculoidea]? The Gulf of Gdansk and Vistula Lagoon [Poland] example
Autorzy:
Rolbiecki, L.
Powiązania:
https://bibliotekanauki.pl/articles/841164.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
fish
Anguillicola crassus
Polska
paratenic host
Nematoda
Vistula Lagoon
dab
Gdansk Gulf
Limanda limanda
Dracunculoidea
Źródło:
Annals of Parasitology; 2004, 50, 2
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digenean fauna of the great cormorant Phalacrocorax carbo sinensis [Blumenbach, 1798] in the brackish waters of the Vistula Lagoon and the Gulf of Gdansk [Poland]
Autorzy:
Kanarek, G.
Sitko, J.
Rolbiecki, L.
Rokicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/2147660.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Polska
parasitic fauna
Vistula Lagoon
Gdansk Gulf
Phalacrocorax carbo sinensis
brackish water
great cormorant
Digenea
Opis:
The great cormorant Phalacrocorax carbo sinensis (Blumenbach, 1798) is one of the most important birds in the Vistula Lagoon and the Gulf of Gdańsk area. As a typical piscivore the bird plays a significant part in life cycles of parasites in aquatic ecosystems. Within January 2000-June 2001, a complete helminthological examination was performed on great cormorants collected in the nesting area at Kąty Rybackie on the Vistula Spit (80 specimens) and in the Vistula Lagoon (10 specimens). The infection prevalence mean intensity, and intensity range were 92.2%, 376.5, and 1-4524, respectively. The presence of 9 digenean species (Paryphostomum radiatum (Dujardin, 1845), Petasiger exaeretits Dietz, 1909, P. phalacroracis (Yamaguti, 1939), Mesorchis pseudoechinatus (Olsson, 1876), Metorchis xanthosomus (Creplin, 1846), Cryptocotyle concavum (Creplin, 1825), Hysteromorpha triloba (Rudolphi, 1819), Tylodelphys clavata (Nordmann, 1832), and Holostephanus dubinini Vojtek et Vojtkova, 1968) was recorded, P. phalacrocoracis being the most common parasile (prevalence 92.2%, mean intensity 323.8). Tylodelphys clavata proved a parasite new for the great cormorant moreover the records of P. phalacrocoracis, H. triloba, and H. dubinini are the first in Poland, while C. concavinn and M. pseudoechinatus were for the first time recorded in the great cormorant in Poland.
Źródło:
Wiadomości Parazytologiczne; 2003, 49, 3; 293-299
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digenean fauna of the great cormorant Phalacrocorax carbo sinensis [Blumenbach, 1798] in the brackish waters of the Vistula Lagoon and the Gulf of Gdansk [Poland]
Autorzy:
Kanarek, G
Sitko, J.
Rolbiecki, L.
Rokicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/840722.pdf
Data publikacji:
2003
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Polska
parasitic fauna
Vistula Lagoon
Gdansk Gulf
Phalacrocorax carbo sinensis
brackish water
great cormorant
Digenea
Opis:
The great cormorant Phalacrocorax carbo sinensis (Blumenbach, 1798) is one of the most important birds in the Vistula Lagoon and the Gulf of Gdańsk area. As a typical piscivore the bird plays a significant part in life cycles of parasites in aquatic ecosystems. Within January 2000-June 2001, a complete helminthological examination was performed on great cormorants collected in the nesting area at Kąty Rybackie on the Vistula Spit (80 specimens) and in the Vistula Lagoon (10 specimens). The infection prevalence mean intensity, and intensity range were 92.2%, 376.5, and 1-4524, respectively. The presence of 9 digenean species (Paryphostomum radiatum (Dujardin, 1845), Petasiger exaeretits Dietz, 1909, P. phalacroracis (Yamaguti, 1939), Mesorchis pseudoechinatus (Olsson, 1876), Metorchis xanthosomus (Creplin, 1846), Cryptocotyle concavum (Creplin, 1825), Hysteromorpha triloba (Rudolphi, 1819), Tylodelphys clavata (Nordmann, 1832), and Holostephanus dubinini Vojtek et Vojtkova, 1968) was recorded, P. phalacrocoracis being the most common parasile (prevalence 92.2%, mean intensity 323.8). Tylodelphys clavata proved a parasite new for the great cormorant moreover the records of P. phalacrocoracis, H. triloba, and H. dubinini are the first in Poland, while C. concavinn and M. pseudoechinatus were for the first time recorded in the great cormorant in Poland.
Źródło:
Annals of Parasitology; 2003, 49, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The occurrence and activity of sulphate-reducing bacteria in the bottom sediments of the Gulf of Gdańsk
Autorzy:
Mudryk, Z.J.
Podgorska, B.
Ameryk, A.
Bolalek, J.
Powiązania:
https://bibliotekanauki.pl/articles/48557.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
concentration
seasonal fluctuation
Baltic Sea
hydrogen sulphide
sediment
Gdansk Gulf
sulphate-reducing bacteria
bottom sediment
Opis:
The paper presents the results of investigations concerning the number, distribution and physiological activity of sulphate-reducing bacteria (SRB) inhabiting the bottom sediments of the Gulf of Gdańsk. The numbers of this group of bacteria range between 0.76 × 103 and 1.27 × 104 cells per g wet sediment. The bacterial sulphate reduction rate in bottom sediments of this area of the Baltic Sea varies from 1.89 to 31.6 nM SO2− 4 g−1 24 h−1. The numbers of SRB and their physiological activity were subject to considerable seasonal fluctuations, maximum values being noted in summer (June) and minima in spring (April). A direct relationship has been found between the number of SRB and hydrogen sulphide concentrations; there is, however, no such relationship with reference to sulphate concentrations. The numbers and distributions of SRB demonstrated considerable variation in a depth profile of bottom sediments. SRB inhabiting the bottom sediments of the Gulf of Gdańsk were able to use three different organic substrates (lactate, acetate, propionate) as electron donors and as carbon and energy sources.
Źródło:
Oceanologia; 2000, 42, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability in the saline water exchange between the Baltic and the Gulf of Gdańsk by the σ-coordinate model
Autorzy:
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/48078.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal zone
variability
thermohaline variability
water exchange
saline water
Baltic Sea
mass exchange
Gdansk Gulf
Opis:
A three-dimensional baroclinic σ–coordinate model was applied to study the circulation and thermohaline variability in the coastal zone in the south-eastern Baltic Sea. The model is based on the Princeton Ocean Model code of Blumberg & Mellor (1987), known as POM, and has the horizontal resolution of ∼5 km and 24 σ-levels in the vertical. The hydrodynamic conditions and variability of water and salt exchange between the Gulf of Gdańsk and the Baltic Proper, and the renewal of water masses in the Gulf of Gdańsk due to atmospheric forcing are analyzed. The numerical simulations were performed with real atmospheric forcings as well as with homogeneous (spatially uniform) wind fields over the whole Baltic Sea. The numerical simulations showed that the atmospheric forcing (winds) can play a significant role in shaping the renewal of bottom saline waters in the Gulf of Gdańsk. Two regions of inflow/outflow of saline waters responsible for the salinity regime were located. The overall water exchange between the Gulf and the Baltic Proper as well as the exchange of saline bottom waters appear to be strongly dependent on wind conditions. The net flux of water of salinity >9 PSU is of the order of 48 000–100000 m3 s−1. SE, E, S and NE winds were found to exert the greatest influence on salinity conditions in the Gulf of Gdańsk. Estimates of saline (salinity >9 PSU) water residence time based on the model simulation yielded values from 46 days for SE winds to 153 days for NW winds.
Źródło:
Oceanologia; 2003, 45, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristic of heterotrophic bacteria inhabiting the Gulf of Gdansk
Charakterystyka bakterioplanktonu zasiedlającego Zatokę Gdańską
Autorzy:
Mudryk, Z.
Powiązania:
https://bibliotekanauki.pl/articles/84809.pdf
Data publikacji:
2003
Wydawca:
Akademia Pomorska w Słupsku
Tematy:
heterotrophic bacteria
bacteria number
taxonomic composition
organic matter transformation
Gdansk Gulf
marine ecosystem
biological balance
Źródło:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2003, 06
1643-0115
Pojawia się w:
Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can the dab [Limanda limanda] be a paratenic host of Anguillicola crassus [Nematoda: Dracunculoidea]? The Gulf of Gdansk and Vistula Lagoon [Poland] example
Autorzy:
Rolbiecki, L.
Powiązania:
https://bibliotekanauki.pl/articles/2146752.pdf
Data publikacji:
2004
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
fish
Anguillicola crassus
Polska
paratenic host
Nematoda
Vistula Lagoon
dab
Gdansk Gulf
Limanda limanda
Dracunculoidea
Opis:
Anguillicola crassus is an Asian nematode, dwelling in eel swim bladder and accidentally introduced to Europe. The eel becomes infected by consuming either crustaceans (intermediate hosts) or small fish (paratenic hosts), supporting stage 3 larvae. In 2002, 15 specimens of dab (Limanda limanda) caught in the Gulf of Gdańsk and 8 caught in the Vistula Lagoon were examined for the presence of A. crassus larvae. Two Gulf of Gdańsk specimens and one Vistula Lagoon fish were found to host 4 stage 3 larvae of A. crassus. This is the first world's record of A. crassus in the dab. It is suggested that, due to a large size of the infected fish, they cannot function as paratenic hosts in the A. crassus life cycle.
Źródło:
Wiadomości Parazytologiczne; 2004, 50, 2; 317-322
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-native crab Rhithropanopeus harrisii (Gould, 1984) – a new component of the benthic communities in the Gulf of Gdansk (Southern Baltic Sea)
Autorzy:
Hegele-Drywa, J.
Normant, M.
Powiązania:
https://bibliotekanauki.pl/articles/48242.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
mud crab
Rhithropanopeus harrisii
non-native species
seasonal change
water temperature
distribution
Gdansk Gulf
Baltic Sea
Źródło:
Oceanologia; 2014, 56, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The structure of macrozoobenthic communities as an environmental status indicator in the Gulf of Gdansk (the Outer Puck Bay)
Autorzy:
Warzocha, J.
Gromisz, S.
Wodzinowski, T.
Szymanek, L.
Powiązania:
https://bibliotekanauki.pl/articles/48544.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
macrozoobenthos
abiotic condition
potential effect
environmental status
food availability
Natura 2000 area
fishing ground
Gdansk Gulf
Źródło:
Oceanologia; 2018, 60, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatio-temporal decay 'hot spots' of stranded wrack in a Baltic sandy coastal system. Part I. Comparative study of the pattern: 1 type of wrack vs 3 beach sites
Autorzy:
Jedrzejczak, M F
Powiązania:
https://bibliotekanauki.pl/articles/48627.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
sediment composition
Zostera marina
sandy beach
coastal system
salinity
litter bag
Gdansk Gulf
decomposition
ANOVA test
Opis:
The significance of distance along the beach-dune transect and different moisture conditions as regards the decay of Zostera marina leaf litter was investigated in simple field experiments in three temperate, medium- to fine-quartz-sediment, sandy beaches of the Gulf of Gdańsk in Poland. 1800 replicate litterbags of freshly stranded Zostera marina leaves were placed in beach sediments at different strata and levels on each of the beaches. The litterbags were sampled after 5, 10, 50, 100 and 150 days in the field and the remaining material was then dried and weighed. Under similar conditions of sediment composition, salinity and wave inundation, ANOVA tests revealed significant differences in breakdown through time and site. Thus there were some differences in the decay process between the low and high beach. In the former, degradation proceeded rapidly in the initial stages and then stabilised, while in the latter it remained linear throughout the study period.Matter loss in each stratum was also seasonally dependent. This may, however, be more closely linked to successional changes in the chemistry and/or microflora of the beach wrack than to its physical breakdown. Differences between organic matter degradation in the high and low beaches may be explained by differences in the moisture regime and nutrient status, and not by differences in the decay processes themselves. Therefore, two decay centres were found in the beach-dune system: the low beach together with the strandline (wrack consumption 12–21 % day−1 in the warm season, and 4–10 % day−1 in the cold season) and the dune (active consumption 2–6 % day−1 in the warm season only).
Źródło:
Oceanologia; 2002, 44, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Short-term and seasonal variability of mesozooplankton at two coastal stations (Gdynia, Sopot) in the shallow water zone of the Gulf of Gdańsk
Autorzy:
Jozefczuk, A.
Guzera, E.
Bielecka, L.
Powiązania:
https://bibliotekanauki.pl/articles/48833.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
zooplankton
Sopot
mesozooplankton
Gdynia
coastal station
seasonal variation
short-term variability
Gdansk Gulf
shallow water zone
Opis:
The idea of the study was to describe short-term and seasonal variations in the composition and abundance of zooplankton in the coastal area of the Gulf of Gdańsk at two shore stations and the influence of selected environmental factors (temperature, salinity, wind velocity) on it. The studies were based on material collected in the shallow waters of the Gulf of Gdańsk from stations located by the Marine Promenade (Bulwar Nadmorski) in Gdynia and the pier in Sopot. Samples were collected in 2001 mainly at weekly intervals using an open-type plankton net. Environmental parameters were measured at the same time. The zooplankton at the Gdynia and Sopot stations consisted of 30 taxa; Rotatoria, Copepoda and meroplankton were dominants. There was a much higher percentage of Rotatoria and a lower percentage of meroplankton at Sopot than at Gdynia. Considerable differences were apparent in the numbers of particular groups of zooplankton at these stations in the same periods. Simpson’s biodiversity index, here based on the zooplankton of the shallow waters off Gdynia and Sopot, was relatively high most of the time. Diversity of mesozooplankton was greatest in July and October. There was a significant correlation between the abundance of mesozooplankton and environmental factors in the case of cladoceran and polychaete larvae. Frequent studies at stations located close to each other illustrate the highly dynamic range of variations occurring in the coastal area: the concentrations of particular organisms fluctuated very considerably from one week to another, even by a factor of several dozen. Nevertheless, the statistically mean numbers of zooplankton at both stations are comparable.
Źródło:
Oceanologia; 2003, 45, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of the Hel upwelling (Baltic Sea) on nutrient concentrations and primary production - the results of an ecohydrodynamic model
Autorzy:
Kowalewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/49109.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
primary production
nutrient concentration
phytoplankton biomass
ecohydrodynamic modelling
upwelling
validation
ProDeMo model
Baltic Sea
Gdansk Gulf
Opis:
An ecohydrodynamic model was used to investigate the effect of the Hel upwelling on nutrient concentrations, primary production and phytoplankton biomass. The model covered the whole Baltic Sea with a 5 NM grid spacing and the Gulf of Gdańskwith a 1 NM grid spacing. Validation indicated good agreement between model results and measurements in the GdańskD eep, and slightly weaker concord for the Hel upwelling area. The vertical nutrient fluxes associated with up- and downwelling in the Hel region were simulated for two 30-day periods in 2000. The nutrient input resulting from long-term upwelling is comparable to the load carried into the Gulf of Gdańskb y the Vistula (Wisła), the largest river in the vicinity. Performed at times when upwelling was almost permanent, the simulations showed elevated nutrient concentrations in surface waters. This was especially distinct in spring when primary production and phytoplankton biomass were both higher. In late summer, however, upwelling caused primary production to decrease, despite the elevated nutrient levels.
Źródło:
Oceanologia; 2005, 47, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Tree stumps from the bottom of the Vistula Lagoon as indicators of water level changes in the Southern Baltic during the Late Holocene
Autorzy:
Leczynski, L.
Miotk-Szpiganowicz, G.
Zachowicz, J.
Uscinowicz, S.
Krapiec, M.
Powiązania:
https://bibliotekanauki.pl/articles/47624.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
tree stump
bottom
palynological analysis
Vistula Lagoon
Baltic Sea
Gdansk Gulf
water level change
Late Holocene
Opis:
The Vistula Lagoon is situated along the south-eastern shore of the Gulf of Gdańsk and is linked with the gulf through the Strait of Baltiysk. Separated from the open sea by the Vistula Spit, the Vistula Lagoon is a shallow body of water with a mean depth of 3 m; the bottom is covered with a layer of mud several metres thick. This article presents a unique, newly discovered locality of tree stumps occurring in situ at the bottom of the Vistula Lagoon. The radiocarbon age of the alder stumps and the top of the peat in which they are rooted is Subboreal. The alder wood was dated to 4770±35 and 3295±35 years BP. The top layers of peat were dated to 4670±40, 4410±35 and 3690±35 years BP. The considerable scatter of the dates indicates the significance of erosional processes during marine transgressions. Radiocarbon dates and pollen analyses indicate that in the late Atlantic – early Subboreal periods, the water level of the Vistula Lagoon was about 3 m lower than it is today. The −2 m level was passed no earlier than c. 3500 years ago; the −1 m level was reached around 2000 years ago.
Źródło:
Oceanologia; 2007, 49, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of environmental factors on the population dynamics of key zooplankton species in the Gulf of Gdansk (Southern Baltic Sea)
Autorzy:
Musialik-Koszarowska, M.
Dzierzbicka-Glowacka, L.
Weydmann, A.
Powiązania:
https://bibliotekanauki.pl/articles/48452.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
environmental factor
abiotic factor
population dynamics
zooplankton
Acartia
Temora longicornis
Pseudocalanus
biomass
Gdansk Gulf
Baltic Sea
Źródło:
Oceanologia; 2019, 61, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
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