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1

The potential causes of cyanobacterial blooms in Baltic Sea estuaries

100%

Plinski M., Mazur-Marzec H., Jozwiak T., Kobos J.

Oceanological and Hydrobiological Studies

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2007

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tom 36

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nr 1

2

Influence of salinity on the growth of Nodularia spumigena Mertens

100%

Musial A., Plinski M.

Oceanological and Hydrobiological Studies

|

2003

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tom 32

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nr 2

3

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Toxic cyanobacteria blooms in the Lithuanian part of the Curonian Lagoon

84%

Paldaviciene A., Mazur-Marzec H., Razinkovas A.

Oceanologia

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2009

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tom 51

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nr 2

203-216

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).

4

An improved method for efficient isolation and purification of genomic DNA from filamentous cyanobacteria belonging to genera Anabaena, Nodularia and Nostoc

84%

Kaczynska A., Los M., Wegrzyn G.

Oceanological and Hydrobiological Studies

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2013

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tom 42

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nr 1

5

Effect of two different Nodularia spumigena extracts on Danio rerio egg mortality and hatching time

84%

Tyminska A., Mazur-Marzec H., Graczyk M., Plinski M.

Oceanological and Hydrobiological Studies

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2005

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tom 34

|

nr Suppl.3

6

Is iron a limiting factor of Nodularia spumigena blooms?

84%

Paczuska L., Kosakowska A.

Oceanologia

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2003

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tom 45

|

nr 4

It is well known that a deficiency of iron, a trace element essential to every living organism, limits the growth of algae and cyanobacteria. Nodularia spumigena Mertens is a blue-green algae species inhabiting the Baltic region that often forms toxic blooms. The aim of the study was to assess the growth of the toxic cyanobacteria with respect to iron bioavailability. The measured growth parameters were the numbers of cells (optical density), chlorophyll a and pheopigment a concentrations. The iron concentrations used ranged from 10−7 to 10−4 mol dm−3. Under iron stress conditions (< 5 × 10−7 mol dm−3), growth inhibition, gradual pigment decay and cell mortality were observed. However, enriching the medium with complexing factors like citric acid and EDTA significantly stimulated the growth rate and chlorophyll a production. The citric acid – EDTA – Fe (5 × 10−7 mol dm−3) complex was demonstrably effective in stimulating the rate of cell division. Starting with 10−6 mol dm−3, the higher the iron(III) concentration used in the media, the more intensive the growth of the cyanobacteria populations. This was most rapid in the presence of high iron concentrations (10−4 mol dm−3), regardless of the presence of complexing agents. It appears that the growth of toxic cyanobacteria N. spumigena, and thus also its ability to form blooms, may well depend on iron availability in the environment.

7

Influence of UV-B radiation [UVB] on the growth and nodularin [NOD] production in Nodularia spumigena cultures [NSG 0897]

84%

Forycka K., Surosz W.

Oceanological and Hydrobiological Studies

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2005

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tom 34

|

nr Suppl.3

8

Toxic Nodularia spumigena blooms in the coastal waters of the Gulf of Gdańsk: a ten-year survey

84%

Mazur-Marzec H., Krezel A., Kobos J., Plinski M.

Oceanologia

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2006

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tom 48

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nr 2

In the Baltic Sea, summer blooms of the filamentous, nitrogen-fixing cyanobacterium Nodularia spumigena are favoured by high P concentrations at low N:P ratios and a salinity range of 5–13 PSU. The blooms are initiated by calm and sunny weather, an elevated surface water temperature and thermal stratification. The mass occurrence of N. spumigena in coastal waters is a matter of special concern, as the cyanobacterium produces nodularin, a potent pentapeptide hepatotoxin. In the Gulf of Gdańsk, the large-scale occurrence of N. spumigena was recorded for the first time in 1994. Blooms of a similar intensity occurred in 2001, 2003 and 2004. Nodularin concentrations in freeze-dried bloom samples varied from 0.01 to 4.01 mg g−1 d.w. In the coastal waters of the Gulf of Gdańsk, cell-bound nodularin concentrations in 2004 and 2005 attained maxima of 25 852±107 μg dm−3 and 3964±125 μg dm−3, respectively. Microscopic analysis revealed the presence of diverse Nodularia forms, with the dominance of curved filaments in bloom samples. The results of in situ studies and remote sensing measurements indicate a high frequency and intensity of cyanobacterial blooms in the Gulf of Gdańsk in the last ten years.

9

Do toxic cyanobacteria blooms pose a threat to the Baltic ecosystem?

67%

Mazur-Marzec H., Plinski M.

Oceanologia

|

2009

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tom 51

|

nr 3

293-319

Cyanobacteria, otherwise known as blue-green algae, are oxygenic, photosynthetic prokaryotes. They occur naturally in many fresh, marine and brackish waters worldwide and play an important role in global carbon and nitrogen cycles. In their long history, cyanobacteria have developed structures and mechanisms that enable them to survive and proliferate under different environmental conditions. In the Baltic Sea, the mass development of cyanobacteria is compounded by a high level of eutrophication. The dominant species in the Baltic, the filamentous Aphanizomenon flos-aquae and Nodularia spumigena, can fix dissolved atmospheric N2, as a result of which they can outcompete other phytoplankton organisms. Heterocystous, filamentous cyanobacteria also make a significant contribution to the internal nutrient loading in the Baltic. The blooms of N. spumigena are of particular concern, as this cyanobacterium produces nodularin (NOD), a hepatotoxic peptide. The concentration of the toxin in the sea is regulated mainly by dilution with uncontaminated water, photolysis, sorption to sediments and microbial degradation. The transfer of the toxin in the Baltic trophic chain through zooplankton, mussels, fish and birds has been reported, but biodilution rather than bioconcentration has been observed. Cyanobacterial blooms are thought to pose a serious threat to the ecosystem. Their harmful effects are related to the occurrence of a high biomass, oxygen depletion, a reduction in biodiversity, and the production of toxic metabolites.

10

Laboratory measurements of remote sensing reflectance of selected phytoplankton species from the Baltic Sea

67%

Soja-Wozniak M., Darecki M., Wojtasiewicz B., Bradtke K.

Oceanologia

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2018

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tom 60

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nr 1

Results of unique laboratory measurements of remote sensing reflectance (Rrs) of several phytoplankton species typically occurring in high abundances in the Baltic Sea waters are presented. Reflectance spectra for diatoms: Cyclotella meneghiniana and Skeletonema marinoi and Dolichospermum sp., Nodularia spumigena and sp. were analysed in terms of assessment of their characteristic features and the differences between them. These species contain similar pigments, which results in general similarities of reflectance spectra, i.e. decrease of reflectance magnitude in the blue and red spectrum regions. However, hyper-spectral resolution of optical measurements let us find differences between optical signatures of diatoms and cyanobacteria groups and between species belonging to one group as well. These differences are reflected in location of local maxima and minima in the reflectance spectrum and changes in relative height of characteristic peaks with changes of phytoplankton concentration. Wide ranges of phytoplankton concentrations were analysed in order to show the persistence of Rrs characteristic features. The picoplankton species, Synechococcus sp. show the most distinct optical signature, which let to distinguish separate cluster in hierarchical cluster analysis (HCA). The results can be used to calibrate input data into radiative transfer model, e.g. phase function or to validate modelled Rrs spectra.

11

Nodularia spumigena blooms and the occurrence of hepatotoxin in the Gulf of Gdańsk

67%

Mazur H., Plinski M.

Oceanologia

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2003

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tom 45

|

nr 2

Nodularia spumigena forms extensive summer blooms in the Baltic Sea. The occurrence of the blooms is determined by water temperature, light intensity and nutrient concentration; levels of nitrogen and phosphorus in particular are critical. The time of the seasonal maximum and intensity of the Nodularia bloom in the Gulf of Gdańsk vary significantly from year to year. In 2001 a rapid and massive proliferation of N. spumigena was observed in late June – early July. The concentration of nodularin in water ranged from 90 to 18 135 μg dm−3 and in lyophilised phytoplankton samples from 3000 to 3520 μg g−1 d.w. (dry weight). Such a high concentration of toxin in the recreational waters of the Gulf of Gdańsk constitutes a health risk for users of bathing areas. In 2002, the N. spumigena bloom was less dense, but lasted longer, with a maximum in late July – early August. In 2002 the concentration of nodularin did not exceed 12.6 μg dm−3 in water and 919 μg g−1 d.w. in lyophilised phytoplankton samples. Other cyanobacterial toxins – microcystins and anatoxin-a – were also detected in the coastal waters of the Gulf of Gdańsk.

12

Occurrence of blue-green algae in the phytoplankton of the Gulf of Gdansk in the years 1994-1997

67%

Witek B., Plinski M.

Oceanological Studies

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1998

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tom 27

|

nr 3

13

Temperature and N:P ratio as factors causing blooms of blue-green algae in the Gulf of Gdansk

67%

Plinski M., Jozwiak T.

Oceanologia

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1999

|

tom 41

|

nr 1

14

A simple tool for the early prediction of the cyanobacteria Nodularia spumigena bloom biomass in the Gulf of Finland

67%

Lilover M. J., Laanemets J.

Oceanologia

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2006

|

tom 48

|

nr S

A fuzzy logic model for predicting the maximum biomass of the toxic cyanobacteria Nodularia spumigena bloom in the Gulf of Finland is suggested. The model bloom biomass depends on the phosphate conditions up to 15 June, including the excess phosphate left over after the spring bloom and on the phosphate inputs parameterised by wind mixing and upwelling from 1 May to 15 June. The surface layer temperature, set to vary from 14 to 23◦C, is regarded as a bloom regulating parameter. The model simulations showed that the predicted N. spumigena biomasses differ markedly from year to year and clearly depend on phosphate conditions up to 15 June.

15

Nodularia - królowa Morza Bałtyckiego?

67%

Rzymski P.

Przyroda Polska

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2014

|

nr 12

s.12-13

16

Blue-green algae blooms in the Gulf of Gdansk and surrounding area

59%

Plinski M., Musial A., Ostrowski B.

Oceanological Studies

|

1998

|

tom 27

|

nr 1

17

Ekologia toksycznych sinic

43%

Blaszczyk A., Torunska A., Kobos J., Browarczyk-Matusiak G., Mazur-Marzec H.

Kosmos

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2010

|

tom 59

|

nr 1-2

173-198

Ograniczanie wyników

The potential causes of cyanobacterial blooms in Baltic Sea estuaries

Influence of salinity on the growth of Nodularia spumigena Mertens

Toxic cyanobacteria blooms in the Lithuanian part of the Curonian Lagoon

An improved method for efficient isolation and purification of genomic DNA from filamentous cyanobacteria belonging to genera Anabaena, Nodularia and Nostoc

Effect of two different Nodularia spumigena extracts on Danio rerio egg mortality and hatching time

Is iron a limiting factor of Nodularia spumigena blooms?

Influence of UV-B radiation [UVB] on the growth and nodularin [NOD] production in Nodularia spumigena cultures [NSG 0897]

Toxic Nodularia spumigena blooms in the coastal waters of the Gulf of Gdańsk: a ten-year survey

Do toxic cyanobacteria blooms pose a threat to the Baltic ecosystem?

Laboratory measurements of remote sensing reflectance of selected phytoplankton species from the Baltic Sea

Nodularia spumigena blooms and the occurrence of hepatotoxin in the Gulf of Gdańsk

Occurrence of blue-green algae in the phytoplankton of the Gulf of Gdansk in the years 1994-1997

Temperature and N:P ratio as factors causing blooms of blue-green algae in the Gulf of Gdansk

A simple tool for the early prediction of the cyanobacteria Nodularia spumigena bloom biomass in the Gulf of Finland

Nodularia - królowa Morza Bałtyckiego?

Blue-green algae blooms in the Gulf of Gdansk and surrounding area

Ekologia toksycznych sinic