Wyniki wyszukiwania

1

Algae at the close of the XX. century

100%

Szweykowski J.

Seria Biologiczna. Uniwersytet im. Adama Mickiewicza w Poznaniu

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1990

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tom 43

2

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Influence of selected abiotic factors on the decomposition of chlorophylls

100%

Kowalewska G., Szymczak M.

Oceanologia

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2001

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tom 43

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nr 3

315-328

The paper presents the results of experiments to determine the influence of selected physico-chemical factors – oxygen, visible light and temperature – on the decomposition of (1) chlorophylls a, b and c, chlorophyll a derivatives and β-carotene in acetone solution, and (2) chlorophyll a and β-carotene in axenic cultures of the blue-green algae Anabaena variabilis. The results indicate that both in acetone extracts and in blue-green algae cultures these pigments were most sensitive to light and oxygen; temperatures of up to 25◦C had no marked influence on these compounds. Under anoxia in acetone solution, the stability towards light decreased in the order chlorophyll a, chlorophyll b, chlorophylls c. Chlorophyll a, moreover, was less stable than its derivatives – phaeophorbides, phaeophytins, pyrophaeophytins and steryl chlorins – but more stable than β-carotene, in the last case also in the blue-green algae cultures. Decomposition of all the pigments proceeded mainly via the breakdown of the porphyrin macrocycle, since the decomposition products were not detected in the VIS range. On the basis of these experiments one can state that while light and oxygen may have a decisive direct influence on the distribution of chlorophylls and β-carotene in sediments, in the natural environment, temperatures of up to 25◦ C may have very little immediate effect.

3

The production characteristic of the phytobenthos of the Gulf of Gdansk

100%

Vozzhinskaya V. B., Plinski M.

Oceanologia

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1990

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tom 28

4

Effect of salinity, temperature and light on growth of Anabaena flos-aquae and Nostoc sp.div. [cyanobacteria, blue-green algae]

100%

Plinski M., Dziopa M.

Oceanological Studies

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2001

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tom 30

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nr 1-2

5

Blooming of Aphanizomenon flos-aquae in the urban pond

100%

Komarzewska K., Glogowska B.

Oceanological and Hydrobiological Studies

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2005

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tom 34

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nr Suppl.3

6

Predictional model of biocenotic changes in offshore Baltic plankton due to temperature increase

100%

Plinski M., Zmijewska M. I., Sapota M., Witek B., Mudrak S.

Oceanological and Hydrobiological Studies

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2003

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tom 32

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nr 3

7

Characterization of phycotoxins produced by cyanobacteria

100%

Mazur-Marzec H.

Oceanological and Hydrobiological Studies

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2006

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tom 35

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nr 1

8

Potentially toxic blue-green algae [Cyanoprokaryota] in the Vistula Lagoon

100%

Rybicka D.

Oceanological and Hydrobiological Studies

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2005

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tom 34

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nr Suppl.3

9

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).

10

The dynamics of seasonal change of the phytoplankton biomass in the Gulf of Gdansk

84%

Plinski M., Picinska J.

Oceanologia

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1986

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tom 23

11

Blue-green algae [cyanobacteria] from the Gulf of Gdansk. A review

84%

Plinski M.

Oceanological and Hydrobiological Studies

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2005

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tom 34

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nr Suppl.3

12

Annual succession patterns of blue-green algae as related to physicochemical water parameters in the urban Lake Jeziorak Maly in the 1998-2003 period

84%

Zebek E.

Oceanological and Hydrobiological Studies

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2005

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tom 34

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nr 4

13

Seasonal dynamics of phytoplankton in the inner Neva Estuary in the 1980s and 1990s

84%

Nikulina V. N.

Oceanologia

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2003

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tom 45

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nr 1

The phytoplankton in the inner Neva Estuary is described from data obtained from 1996 to 2000.T he seasonal dynamics of the phytoplankton biomass are characterized by a bimodal curve with a summer maximum.T he average seasonal biomass was approximately 3 mg l−1, the maximum biomass was 8–11 mg l−1. The species composition and quantitative parameters were compared to those observed in the 1980s.A notable, nearly 1.5–2 fold, increase in the biomass in the summer–autumn period and the predominance of Oscillatoria species among the blue-green algae were observed.A decline in the nutrient load in the water body at the end of the 1990s appeared to be insufficient to bring about a decrease in the proportion of Oscillatoria algae in the total species composition or a decline in the biomass of the entire phytoplankton community. In 2000 a certain change in the structural composition of the phytoplankton complex was noted.S pecies that had been predominant in the 1980s and had lost their advantage in the early 1990s, regained their earlier status.

14

Phytoplankton of the Szczecin Lagoon [The Great Lagoon]

84%

Luscinska M.

Oceanological and Hydrobiological Studies

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2005

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tom 34

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nr 1

15

Note on the index of Latin names of algal taxa found in Poland

84%

Sieminska J.

Oceanological Studies

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1998

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tom 27

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nr 2

16

Impact of blue-greens from genera of Microcystis on some aquatic animals

84%

Swierczynski M., Czerniawska I.

Acta Ichthyologica et Piscatoria

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1992

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tom 22

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nr 2

17

Dynamics of the phytoplankton community in mesotrophic Lake Borowno

67%

Wisniewska M., Paczuska B.

Oceanological and Hydrobiological Studies

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2013

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tom 42

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nr 2

18

The in situ influence of Ceratophyllum demersum on a phytoplankton assemblage

67%

Pelechata A., Pelechaty M.

Oceanological and Hydrobiological Studies

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2010

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tom 39

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nr 1

95-101

19

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

67%

Mazur-Marzec H., Plinski M.

Oceanologia

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2009

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tom 51

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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.

20

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

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nr 3

Ograniczanie wyników

Algae at the close of the XX. century

Influence of selected abiotic factors on the decomposition of chlorophylls

The production characteristic of the phytobenthos of the Gulf of Gdansk

Effect of salinity, temperature and light on growth of Anabaena flos-aquae and Nostoc sp.div. [cyanobacteria, blue-green algae]

Blooming of Aphanizomenon flos-aquae in the urban pond

Predictional model of biocenotic changes in offshore Baltic plankton due to temperature increase

Characterization of phycotoxins produced by cyanobacteria

Potentially toxic blue-green algae [Cyanoprokaryota] in the Vistula Lagoon

Toxic cyanobacteria blooms in the Lithuanian part of the Curonian Lagoon

The dynamics of seasonal change of the phytoplankton biomass in the Gulf of Gdansk

Blue-green algae [cyanobacteria] from the Gulf of Gdansk. A review

Annual succession patterns of blue-green algae as related to physicochemical water parameters in the urban Lake Jeziorak Maly in the 1998-2003 period

Seasonal dynamics of phytoplankton in the inner Neva Estuary in the 1980s and 1990s

Phytoplankton of the Szczecin Lagoon [The Great Lagoon]

Note on the index of Latin names of algal taxa found in Poland

Impact of blue-greens from genera of Microcystis on some aquatic animals

Dynamics of the phytoplankton community in mesotrophic Lake Borowno

The in situ influence of Ceratophyllum demersum on a phytoplankton assemblage

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

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