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1

Antibiotic sensitivity of neustonic bacteria in Lake Jeziorak Maly

100%
Walczak M., Donderski W.
Polish Journal of Environmental Studies
|
2004
|
tom 13
|
nr 4
This paper presents the results of research on the antibiotic sensitivity of bacteria inhabiting the surface microlayer (SM) and the subsurface water (SSW) of Lake Jeziorak Mały. It follows from the results that doxycycline, oxytetracycline and nalidixic acid are characterized by the strongest antibacterial effect. For some antibiotics, different strengths of the effect on bacteria isolated from the surface microlayer and subsurface water have been observed.
2

Neustonic bacteria of Lake Jeziorak Maly [Poland]

86%
Donderski W., Walczak M., Mudryk Z.
Polish Journal of Environmental Studies
|
1998
|
tom 07
|
nr 3
This paper presents results of research concerning bacteria inhabiting the surface microlayer and subsurface waters of the eutrophic lake Jeziorak Maly. Total number, biomass and share of heterotrophic bacteria was higher in the surface microlayer than in subsurface water. The rate of secondary production of bacteria was higher in the subsurface water. There is a considerably higher percentage of neustonic bacteria showing the ability to degrade different compounds than planktonie ones.
3

Effect of heavy metal ions on neustonic and planktonic bacteria isolated from Lake Jeziorak Maly

86%
Donderski W., Gluchowska M., Wodkowska A.
Polish Journal of Environmental Studies
|
1997
|
tom 06
|
nr 3
The object of study was the effect of metal ions Hg+2, Cu+2, Zn+2 on the development of neustonic and planktonie bacteria from Lake Jeziorak Maly. It was found that planktonie bacteria were moře susceptible to the heavy metal ions used in the experiment than neustonic bacteria. The bacteria showed higher tolerance to various concentrations of heavy metals in spring and summer than in autumn and winter. Neustonic bacteria isolated from sites exposed to municipal and industrial pollution showed higher tolerance to increased concentrations of heavy metals. Bacteria cultured in trophically rich medium were less susceptible to various concentrations of heavy metals than those cultured in trophically poor medium. The effect of toxicity of heavy metal ions on bacteria increased with the increase in their concentration and decreased in the following succession: Hg>Cu>Zn.
4

Decomposition of anionic surface active substances by bacteria from the surface microlayer of Lake Jeziorak Maly

86%
Walczak M., Donderski W.
Polish Journal of Environmental Studies
|
2004
|
tom 13
|
nr 3
The concentration of anionic surface active substances (ASAS) in the water of Lake Jeziorak Mały and the degradation of these substances by bacteria isolated from the surface microlayer and subsurface water were the object of the research of this paper. The concentrations of ASAS in water of this lake were at the level of about 2 mg/1. The biodegradation of ASAS was performed twice as well by microorganisms from the surface microlayer than from subsurface water. Moreover, within the surface microlayer the process of decomposing ASAS was most effectively performed by bacteria isolated from the layers of water closest to the surface (100-150 μm).
5

Species biodiversity of net phytoplankton as an indicator of trophic changes in the urban Lake Jeziorak Maly

72%
Zebek E.
Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego
|
2004
|
tom 01
6

Aromatic hydrocarbons decomposition by neustonic bacteria. Part II - Policyclic aromatic hydrocarbons biodegradation

72%
Walczak M., Donderski W., Mudryk Z., Skorczewski P.
Polish Journal of Environmental Studies
|
2001
|
tom 10
|
nr 1
The present paper provides results of a study on heterotrophic bacteria occurrence and quantity in the biofilm and subsurface water of lake Jeziorak Maty. Degradation of several polycyclic aromatic hydrocarbons (PAH's) (anthracene, naphthalene) by neustonic and planktonic bacteria have been examined. It has been discovered that some aromatic hydrocarbons were better decomposed by neustonic bacteria than by planktonic ones. Both Total Number of bacteria (TN) and heterotrophic bacteria number (TVC) were higher in the surface microlayer than in the subsurface water.
7

Changes of species diversity of phytoplankton and physicochemical water parameters in annual cycles in the urban Lake Jeziorak Maly

72%
Zebek E.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr Suppl.1
8

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

72%
Zebek E.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr 4
9

Qualitative and quantitative changes of diatoms with relation to physiochemical water parameters in the littoral zone of the urban Lake Jeziorak Maly

58%
Zebek E.
Oceanological and Hydrobiological Studies
|
2007
|
tom 36
|
nr 4
3-22
10

Water temperature of the littoral zone during the domination of the blue-green algae Planktothrix agardhii and Limnothrix redeckei in the composition of phytoplankton in the polytrophic Lake Jeziorak Maly

58%
Zebek E.
Oceanological Studies
|
1998
|
tom 27
|
nr 1
11

Qualitative and quantitative changes of blue-green algae in response to physicochemical water parameters in the urban Lake Jeziorak Maly

58%
Zebek E.
Oceanological and Hydrobiological Studies
|
2005
|
tom 34
|
nr 1
12

Quantitative changes of Planktolyngbya brevicellularis, Limnothrix redekei and Aphanizomenon gracile in the annual cycle vs. physicochemical water parameters in the urban Lake Jeziorak Maly

58%
Zebek E.
Oceanological and Hydrobiological Studies
|
2006
|
tom 35
|
nr 1
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