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1

Replacement of Chroococcales and Nostocales by oscillatoriales caused a significant increase in microcystin concentrations in a dam reservoir

100%
Grabowska M., Pawlik-Skowronska B.
Oceanological and Hydrobiological Studies
|
2008
|
tom 37
|
nr 4
23-33
2

The impact of UV-B radiation on Microcystis aeruginosa growth and toxin production

100%
Fijalkowska M., Surosz W.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr Suppl.3
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Toxic cyanobacteria blooms in the Lithuanian part of the Curonian Lagoon

84%
Paldaviciene A., Mazur-Marzec H., Razinkovas A.
Oceanologia
|
2009
|
tom 51
|
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

Harmful cyanotoxins: hepatotoxic effects of microcystin in mammalian animals

84%
Bownik A., Skowronski T.
Medycyna Weterynaryjna
|
2007
|
tom 63
|
nr 05
522-524
Cyanobacterial blooms, often observed in eutrophic water reservoirs, produce toxic metabolites known as cyanotoxins that affect animal health. There are five groups of cyanotoxins classified on the basis of their toxic action: hepatotoxins, neurotoxins, cytotoxins, dermatotoxins and irritant toxins. Microcystin (MC) is a very common and well described hepatotoxin produced by various genera, such as Microcystis, Anabaena, Planktothrix, Anabenopsis, Hapalosiphon and Nostoc. It acts as an inhibitor of serine/threonine protein phosphatase 1 (PP1) and 2A (PP2A), inducing hyperphosphorylation of cell proteins and a variety of toxic changes in hepatocytes often leading to liver insufficiency and death caused by hypovolemic shock. Since the reports on MC toxicity are on the increase this cyanotoxin should be treated as an important environmental factor affecting human and animal health. A brief overview of existing literature on the intake, mechanism of action, and hepatotoxic effects on mammalian animals is presented in this paper
5

Development of toxin-producing cyanobacteria during the water level manipulation in a shallow heavily modified lake

84%
Solis M., Pawlik-Skowronska B., Kalinowska R.
Oceanological and Hydrobiological Studies
|
2015
|
tom 44
|
nr 2
6

Diversity and distribution of cyanobacterial toxins in the Italian subalpine lacustrine district

84%
Cerasino L., Salmaso N.
Oceanological and Hydrobiological Studies
|
2012
|
tom 41
|
nr 3
7

Appearance of toxigenic cyanobacteria in two Polish lakes dominated by Microcystis aeruginosa and Planktothrix agardhii and environmental factors influence

84%
Gagala I., Izydorczyk K., Skowron A., Kamecka-Plaskota D., Stefaniak K., Kokocinski M., Mankiewicz-Boczek J.
International Journal of Ecohydrology and Hydrobiology
|
2010
|
tom 10
|
nr 1
The aim of this study was to analyze and compare the relationship between environmental factors (temperature; pH; total phosphorus - TP and nitrogen - TN and their ratio) and occurrence of microcystin producing cyanobacteria in two shallow, eutrophic Polish water bodies, Sulejów Reservoir (Central Poland) and Bnińskie Lake (Western Poland). Samples for analyses were collected from June till October 2005. Cyanobacteria Microcystis aeruginosa and Planktothrix agardhii, responsible for microcystins production, were detected respectively for Sulejów Reservoir and Bnińskie Lake. Molecular analysis of the mcyE gene, indicated the presence of toxigenic strains of cyanobacteria in both water bodies throughout the whole sampling period. The highest extracellular microcystins toxicity established by PPIA was 2.83 μg dm-3 and 2.19 μg dm-3 in samples dominated by M. aeruginosa and P. agardhii respectively. Two different environmental factors in studied water bodies were crucial in occurrence of hepatotoxic cyanobacteria. The strong correlation between biomass of M. aeruginosa and total nitrogen (TN) in Sulejów Reservoir (R=0.83; p<0.05) was observed. Strong negative correlation was found between biomass of P. agardhii and temperature (R=-0.77; p<0.05 and R=-0.70; p<0.05) in Bnińskie Lake.
8

Cyanobacterial hepatotoxins, microcystins and nodularins, in fresh and brackish waters of the Pomeranian Province, Northern Poland

84%
Mazur-Marzec H., Spoof L., Kobos J., Plinski M., Meriluoto J.
Oceanological and Hydrobiological Studies
|
2008
|
tom 37
|
nr 4
3-21
9

The influence of the ecohydrological rehabilitation in the cascade of Arturowek reservoirs in Lodz (Central Poland) on the cyanobacterial and algae blooming

84%
Szulc B., Jurczak T., Szulc K., Kaczkowski Z.
Oceanological and Hydrobiological Studies
|
2015
|
tom 44
|
nr 2
10

Water blooms and their toxicity in public swimming areas of lakes in the Poznan District

84%
Zagajewski P., Goldyn R., Fabis M.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr Suppl.1
11

Toxic cyanobacterial blooms in the Kociewskie Lakes [Northern Poland]

84%
Kobos J., Mazur-Marzec H., Dittmer M., Witek B., Plinski M.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr Suppl.3
12

Cyanoprocaryotes and microcystins dynamics in shallow hypertrophic lake [South-Eastern Lithuania]

84%
Kasperoviciene J., Koreiviene J., Paskauskas R.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr Suppl.3
13

The effect of cyanobacterial blooms in the Siemianowka Dam Reservoir on the phytoplankton structure in the Narew River

67%
Grabowska M., Mazur-Marzec H.
Oceanological and Hydrobiological Studies
|
2011
|
tom 40
|
nr 1
14

Simultaneous accumulation of anatoxin-a and microcystins in three fish species indigenous to lakes affected by cyanobacterial blooms

67%
Pawlik-Skowronska B., Toporowska M., Rechulicz J.
Oceanological and Hydrobiological Studies
|
2012
|
tom 41
|
nr 4
15

Blooms of toxin-producing Cyanobacteria – a real threat in small dam reservoirs at the beginning of their operation

67%
Pawlik-Skowronska B., Toporowska M.
Oceanological and Hydrobiological Studies
|
2011
|
tom 40
|
nr 4
16

Nearshore fluctuations in water chemistry, microcystins and coliform bacteria during the ice-free season in Lake Winnipeg, Manitoba, Canada

67%
Pip E., Allegro E.
International Journal of Ecohydrology and Hydrobiology
|
2010
|
tom 10
|
nr 1
The aim of this study was to identify empirical relationships among 12 water chemistry parameters, microcystins, and coliform bacteria at four beaches in Lake Winnipeg, Canada. While microcystin fluctuations were not synchronized among the different sites, concentrations were marginally correlated with concurrent nitrate levels at individual sites, but lagged more significantly behind soluble inorganic phosphorus, and inversely behind the nitrate-N/soluble phosphorus ratio (NPR). Microcystins were also inversely correlated with copper, which was used as an algaecide in the lake. Total coliform bacterial counts (TC) were significantly greater at times of increased turbidity, temperature, and higher inorganic phosphate and dissolved organic matter. TC were also inversely correlated with NPR.
17
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Morphological, genetic, chemical and ecophysiological characterisation of two Microcystis aeruginosa isolates from the Vistula Lagoon, Southern Baltic

67%
Mazur-Marzec H., Browarczyk-Matusiak G., Forycka K., Kobos J., Plinski M.
Oceanologia
|
2010
|
tom 52
|
nr 1
127-146
The Vistula Lagoon (southern Baltic Sea) is a shallow and highly eutrophic water body, with frequent blooms of cyanobacteria dominated by Microcystis and Anabaena species. Two Microcystis strains, MK10.10 and MAKR0205, isolated from the lagoon were characterised in this work. The morphology of the isolates differed significantly with respect to cell size and their ability to form aggregates. Based on the 16S rRNA sequence and 16S-23S internal transcribed spacer (ITS) sequence, both isolates were classified as Microcystis aeruginosa. However, only one isolate, MK10.10, possessed the mcy genes responsible for microcystin biosynthesis and only this strain produced microcystins. The effects of environmental factors, such as light, temperature and salinity, on toxin production turned out to be minor. Under the culture conditions used in the experiments, the biomass of the toxic MK10.10 was always lower. Hybrid quadrupole-time-of-flight liquid chromatography/tandem mass spectrometry (QTOF-LC/MS/MS) was used to elucidate the structure of the microcystin (MC) variants produced by MK10.10. Based on molecular ion and fragmentation spectra, the toxins were identified as MC-LR, MC-VR and MC- HIlR. Our study confirmed that some morphological criteria could be useful in preliminarily assessing the potential toxicity of a Microcystis bloom.
18

Wplyw warunkow srodowiska wodnego na efektywnosc zakwitow sinicowych i wydajnosc biosyntezy mikrocystyn z grupy hepatotoksyn. Czesc II. Wplyw czynnikow chemicznych

67%
Kabzinski A. K. M., Grabowska H., Cyran J., Zawadzka A., Macioszek B., Szczukocki D., Juszczak R.
Acta Scientiarum Polonorum. Formatio Circumiectus
|
2008
|
tom 07
|
nr 1
45-62
19

Toxin-producing blooms of the cyanobacterium Microcystis aeruginosa in rainwater ponds in Saudi Arabia

67%
Al-Shehri A.
Oceanological and Hydrobiological Studies
|
2010
|
tom 39
|
nr 4
20

Wplyw warunkow srodowiska wodnego na efektywnosc zakwitow sinicowych i wydajnosc biosyntezy mikrocystyn z grupy hepatotoksyn. Czesc I. Wplyw czynnikow fizykochemicznych

67%
Kabzinski A. K. M., Grabowska H., Cyran J., Zawadzka A., Macioszek B., Szczukocki D., Juszczak R.
Acta Scientiarum Polonorum. Formatio Circumiectus
|
2008
|
tom 07
|
nr 1
25-43
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