Wyniki wyszukiwania - Biblioteka Nauki

1

Ograniczenia prawne i uwarunkowania przyrodnicze działalności rolniczej na obszarach Natura 2000 w województwie warmińsko-mazurskim

100%

Zebek E.

Acta Scientiarum Polonorum. Administratio Locorum

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2017

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tom 16

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nr 2

2

Response of planktonic cyanobacteria and periphyton assemblages to physicochemical properties of stormwater in a shallow urban lake

100%

Zebek E.

Journal of Elementology

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2015

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tom 20

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nr 1

EN

The aim of this study was to determine the response of planktonic cyanobacteria and periphyton assemblages (periphytic algae in the separator pipes, epilithon and epiphyton) to lamella separator-treated stormwaters in urban Lake Jeziorak Mały in 1997-2003 and 2005. Relationships between periphyton and phytoplankton assemblage and water chemistry variables were analyzed by calculating the Spearman’s rank correlation coefficient, and then with canonical correspondence analysis (CCA). The basic factors favouring the cyanobacterial growth were water temperature and iron, while high chloride concentration limited their development. Cyanobacterial abundance recorded at the separators was half that of the pelagic zone because of a lower water temperature and higher Cl concentration, indicating high algal sensitivity to the considerable velocity and disturbances caused by stormwater effluents. Higher silicon and calcium concentrations at the separators and orthophosphates at sites with stones and gravel showed connection with the growth of diatoms, especially Fragilaria leptostauron var. martyi, Diatoma vulgaris and Navicula gregaria. The richness of the dominant cyanobacteria, Aphanizomenon gracile and Limnothrix redekei, was related with the water temperature, conductivity, pH, and TN. Similarities in the periphyton dynamics in separator pipes and epilithon between the years covered by the study suggest significant influence of separator-treated stormwater on these assemblages, in contrast to epiphyton and phytoplankton in the pelagial zone, where these waters had limited influence.

3

Seasonal dynamics of periphytic algae in the vicinity of the hydroelectric plant in the Pasleka River (north-east Poland)

100%

Zebek E.

International Journal of Ecohydrology and Hydrobiology

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2013

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tom 13

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nr 3

4

Seasonal changes in the palnktonic and periphytic diatoms with relation to physiochemical water parameters in the littoral zone of the Lake Jeziorak Mały

100%

Zebek E.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2009

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tom 06

5

Seasonal changes in net phytoplankton in two lakes with differing morphometry and trophic status (northeast Poland)

100%

Zebek E.

Archives of Polish Fisheries

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2009

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tom 17

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nr 4

6

Long-term cyanobacterial dynamics as related to physicochemical water parameters in a restored urban lake

100%

Zebek E.

Journal of Elementology

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2016

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tom 21

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nr 1

EN

The aim of this study has been to determine the response of cyanobacteria to the lake protection and restoration measures implemented in the littoral zone of an urban lake called Jeziorak Mały. The first investigations were conducted in 1996 and were resumed in 1997-2003, 2005 and 2013, following the installation of a separator and the creation of stone accumulation sites. Long-term changes in phytoplankton cyanobacterial proportions, abundance and biomass were analyzed in relation to environmental conditions at the sites in the littoral zone (S – separator pipes, K – sites with stones and R – sites with macrophytes). Relationships between cyanobacteria and water chemistry variables were analyzed by calculating the Spearman’s rank correlation coefficient, and then with canonical correspondence analysis (RDA). The results provided evidence that water temperature, total nitrogen and iron concentration (S, R), but also PO43- in spring (S,K) were the principal factors affecting cyanobacterial development. There was a significant decrease in the share, abundance and biomass of cyanobacteria coinciding with a decrease in conductivity and PO43- following the onset of lake restoration efforts. Changes in dominant species from the ones typical in hypertrophic lakes to those typically found in eutrophic lakes took place during the research. The modifications indicated a strong initial response of cynaobacteria to the restoration measures, but the situation stabilized in 2013, when cyanobacteria returned to their previous average levels. This suggests that the introduction of lake restortation measures contributed to the lake’s improved water quality and they should be retained for efficient lake management in the future.

7

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

100%

Zebek E.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2004

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tom 01

8

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

100%

Zebek E.

Oceanological and Hydrobiological Studies

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2007

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tom 36

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nr 4

3-22

9

Rola samorządu terytorialnego w ochronie środowiska - przykłady

100%

Zebek E.

Ochrona Środowiska. Prawo i Polityka

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2007

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nr 4[50]

10

Effect of the fountain-based water areation system on phytoplankton growth in a urban lake

100%

Zebek E.

Teka Komisji Ochrony i Kształtowania Środowiska Przyrodniczego

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2015

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tom 12

11

Qualitative and quantitative changes of green algae with relation to physicochemical water parameters in the urban Lake Jeziorak Maly

100%

Zebek E.

Polish Journal of Natural Sciences

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2009

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tom 24

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nr 1

60-75

EN

Phytoplankton in the littoral and pelagial zone of the urban Lake Jeziorak Mały were studied between April and October of 2002, 2003 and 2005. The relation between the abundance and biomass of green algae and selected physiochemical water parameters, species diversity and dominants in the total abundance and biomass of green algae were analyzed. The statistically significant relationships was noted between water temperature, oxygen content, total nitrogen and the biomass of green algae at the coefficient of multiple correlation R = 0.4722. Increased the abundance and biomass of green algae were followed by a decrease in water temperature and increase in oxygen content and total nitrogen concentration during their growth in a temperature range of 10.0℃ to 18.8℃. The maximum biomass of green algae was noted in September and the maximum their abundance in October at the highest total nitrogen concentration. In the case of abundance, dominated taxa typical of plankton (Micratinium pusillum, Chlamydomonas spp., Golenkinia radiata, Golenkiniopsis sp., Koliella variabilis and Monoraphidium concortum) and biomass one – filamentous forms as a component of plant periphyton (Spirogyra sp., Stigeoclonium sp. and Ulothrix tenuissima).

PL

Badania fitoplanktonu prowadzono w strefie brzegowej i pelagialu śródmiejskiego jeziora Jeziorak Mały w sezonie od kwietnia do października w latach 2002, 2003 i 2005. Analizowano relacje między liczebnością i biomasą zielenic a wybranymi parametrami fizyczno-chemicznymi wody. Badano różnorodność gatunkową oraz dominanty w ogólnej liczebności i biomasie zielenic. Stwierdzono istotny statystycznie związek między temperaturą wody, zawartością tlenu i azotu ogólnego a biomasą zielenic, gdy współczynnik korelacji wielokrotnej R = 0,4722. W okresie rozwoju zielenic, w temperaturze wody od 10,0 do 18,8℃, wzrost liczebności i biomasy tych glonów następował wraz z obniżaniem się temperatury wody, wzrostem natlenienia i zawartości azotu ogólnego. Maksimum biomasy zielenic odnotowano we wrześniu, a liczebności – w październiku, gdy zawartość azotu ogólnego była najwyższa. Najwięcej było taksonów typowo planktonowych (Micratinium pusillum, Chlamydomonas spp., Golenkinia radiata, Golenkiniopsis sp., Koliella variabilis i Monoraphidium concortum), a największą biomasę miały formy nitkowate wchodzące w skład peryfitonu roślinnego (Spirogyra sp., Stigeoclonium sp. i Ulothrix tenuissima).

12

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

100%

Zebek E.

Oceanological and Hydrobiological Studies

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2007

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tom 36

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nr Suppl.1

13

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

100%

Zebek E.

Oceanological and Hydrobiological Studies

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2006

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tom 35

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nr 1

14

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

100%

Zebek E.

|

tom 34

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nr 4

15

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

100%

Zebek E.

|

tom 34

|

nr 1

16

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

100%

Zebek E.

Oceanological Studies

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1998

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tom 27

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nr 1

17

Gastropods and periphytic algae relationships in the vicinity of a small hydroelectric plant on the Pasleka River in northeast Poland

63%

Zebek E. , Szymanska U.

Archives of Polish Fisheries

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2014

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tom 22

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nr 1

18

Uwarunkowania przyrodnicze i ochrona prawno-administracyjna obszarów wodno-błotnych na przykładzie rezerwatów i użytków ekologicznych w województwie warmińsko-mazurskim

63%

Zebek E. , Banilewicz M.

Ochrona Środowiska. Prawo i Polityka

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2009

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nr 1[55]

19

Phytoplankton and the physicochemical background in an assessment of the ecological and trophic conditions in vendace-type lakes

45%

Napiorkowska-Krzebietke A. , Stawecki K. , Pyka J. P. , Zdanowski B. , Zebek E.

Journal of Elementology

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2016

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tom 21

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nr 1

EN

This study focused on the phytoplankton and environment relationships as well as on the ecological and trophic conditions of lakes inhabited by coregonid fish. Studies were carried out in deep and stratified vendace-type lakes called Lake Pluszne and Lake Łańskie (the Olsztyn Lake District, north-eastern Poland) in 2007-2008. Ecological and trophic conditions were determined on the basis of the phytoplankton multi-metric PMPL and Trophic State Index. Both lakes were characterized by a similar thermal and mictic regime, with the occurrence of hypolimnetic oxygen deficits. They were classified as hydrocarbonate-calcium type and medium-sized eutrophicated water bodies. According to the integrated trophy assessment, proposed in this research, the final Trophic State Index TSIAV indicated meso-eutrophy of both lakes, although the phytoplankton-based PMPL indicated that the ecological potential in Lake Łańskie was good and less than good - due to large cyanobacteria biomasses - in Lake Pluszne. The actual loads of phosphorus and nitrogen significantly exceeded permissible levels, especially in Lake Łańskie (5-fold at the most of the P content), at similar morphometric and sedimentation conditions in both lakes. However, more intensive water-exchange rate and more favorable conditions for phosphorus runoff in Lake Łańskie could limit the phytoplankton growth, especially cyanobacteria. Summing up, better oxygen conditions and less abundant phytoplankton suggested that Lake Łańskie had more suitable conditions for coregonids during the surveyed period than Lake Pluszne, where the vendace biomass has recently decreased drastically.