Wyniki wyszukiwania

1

Sanitary and bacterial analysis of water and bottom sediments of a heavily polluted, hypertrophic lake

100%

Niewolak S.

Ekologia Polska

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1989

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tom 37

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nr 1-2

2

Przestrzenne rozmieszczenie i sezonowe zmiany liczebnosci bakterii wiazacych azot atmosferyczny [wolnozyjacych] i oligonitrofilnych w wodzie glebowo-gruntowej zlewni jeziora eutroficznego

100%

Niewolak S.

Woda - Środowisko - Obszary Wiejskie

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2007

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tom 07

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nr 1

123-140

3

Sezonowe zmiany liczebnosci chemoautotroficznych bakterii nitryfikacyjnych w wodzie glebowo-gruntowej zlewni jeziora eutroficznego

100%

Niewolak S.

Roczniki Gleboznawcze

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2003

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tom 54

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nr 1-2

125-136

4

The occurrence of yeasts in some of the Masurian Lakes

100%

Niewolak S.

Acta Mycologica

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1976

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tom 12

|

nr 2

5

Wpływ promieniowania jonizującego na Streptococcus lactis MB-6 w różnych fazach stadium rozwojowego

100%

Niewolak S.

Zeszyty Naukowe Akademii Rolniczo-Technicznej w Olsztynie. Technologia Żywności

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1973

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nr 02(108)

6

Bakterie redukujace NO3 do NO2 i denitryfikacyjne [redukujace NO3 do N2O-N2] w wodzie glebowo-gruntowej zlewni jeziora eutroficznego

100%

Niewolak S.

Woda - Środowisko - Obszary Wiejskie

|

2006

|

tom 06

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nr 2[18]

255-269

7

Evaluation of pollution and the sanitary-bacteriological state of Lake Wigry, Poland. Part I. Pelagic waters of Lake Wigry

100%

Niewolak S.

Polish Journal of Environmental Studies

|

1999

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tom 08

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nr 2

8

The sanitary and bacteriological quality of water flowing into Wadag Lake

100%

Niewolak S.

Polish Journal of Environmental Studies

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1993

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tom 02

|

nr 3

A number of indicatory microorganisms are found in clean and lightly polluted surface water in the ditch in Słupy village and in the drainage ditch in the region of Barczewo; in the Elżbieta Canal and in Wójtowo stream - for clean (TVC 37°C), lightly (TC, FC, and FS), or strongly (TVC 20°C) polluted surface water; and for inconsiderably or noticeably (TVC 20°C and TVC 37°C) and strongly (TC, FC, FS and Clostridium perfnngens) polluted surface waters, in the Orzechówka and Pisa Rivers. An inconsiderable amount of pollution by indicatory microorganisms is characteristic of the waters of Wadąg Lake and the Wadąg River, which flows from this reservoir. The greater amount of pollution by these microorganisms in the investigated watercourses occurs after rainfall in May and/or June, in September 1992, and after rain and thawing in the lake in January 1993.

9

Assessment of hygienic and sanitary states of well and spring waters in Wigry National Park, Poland

100%

Niewolak S.

Polish Journal of Environmental Studies

|

1998

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tom 07

|

nr 2

This paper presents data on conductivity, pH, hardness, NH4-N, N03-N and Mn content in water of 49 selected wells, counts of TVC 20°C, TVC 37°C, TC, FC, FS and CP in water of 302 wells (0.3 - 31.5 m) in 30 localities, and from 8 natural springs in Wigry National Park in northeast Poland. Surveys were carried out twice: in spring and autumn 1995. Conductivity of well water was 360-1430 mS/cm3, pH 7.2-8.6, water hardness 172-544 mval/cm3, content of NH4-N 0-0.21 mg/dm3, N03-N 0-30.00 mg/dm3, Mn 0-1.00 mg/dm3. The majority of the surveyed wells had TVC 20°C. TVC 37°C, TC and FC counts exceeding permissible levels, and very high numbers of FC. Single wells had water containing CP. High numbers of these micro-organisms were present in shallow waters (less than 10 m) as well as in deep wells (more than 10 m). The degree of bacteriological contamination of well waters was usually lower in spring and higher in autumn. Higher bacteriological pollution of well water was often accompanied by higher N03-N concentrations. Natural springs were usually characterised by lower bacteriological contamination than well water.

10

A sanitary and bacteriological estimation of water-bearing formations in the Omulewski aquifer, Mazuria

100%

Niewolak S.

Polish Journal of Environmental Studies

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1994

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tom 03

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nr 4

This paper includes the results of research on indicatory microorganisms of contamination (TVC 20°C, TVC 37°C) and sanitary (TC, FC, FS, Clostridium perfringens) states in water-bearing formations (without isolation from the surface) of the Omulewski aquifer in Mazuria, Poland, conducted from 1988 to 1993. Less bacteriological contamination was characteristic of water from wells in a partly (Janowo) or entirely (Sedańsk, Narty) forested area, at a depth of 38-40 m. Greater contamination was discovered in the area of large cattle and hog farms (Dzierzki, Wesołowo, Wielbark, Przezdzięk, Baranowo, Wyżegi). In this area less bacteriological contamination occurred in water from deeper wells (to 64 m), whereas water contamination from shallow boreholes (6.8-23.5 m) was higher. Most well-water samples taken from the forested area fulfilled sanitary and bacteriological requirements for drinking water. The percentage of well-water samples which would fulfill sanitary and bacteriological requirements was smaller for farming areas. The most severe contamination was discovered in water samples from shallow boreholes at a cattle farm in Wesołowo.

11

Bacteriogical monitoring of lake water in Wigry National Park in the summer

100%

Niewolak S.

Polish Journal of Environmental Studies

|

1999

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tom 08

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nr 4

This paper presents the results of examination of the number of indicatory bacteria of pollution degree (TVC 20°C, TVC 37°C) and sanitary state (TC, FC, FS) in the water of Lake Wigry and 41 other lakes on the area of Wigry National Park (WNP) carried out in the summer of 1995. Generally, lower numbers of the above-mentioned indicatory bacteria were found in the watershed of the Kamionka and Samlanka Rivers, higher numbers were observed in the water of direct watershed of Lake Wigry, the Wiatroluza River and canals connecting some lakes with Lake Wigry. The numbers TVC 20°C, TVC 37°C, FC show most often purity or only insignificant pollution of the examined lake waters. The samples of polluted water were most often found in the direct watershed of Lake Wigry. Only single water samples of Lake Wigry, lakes in the watershed of the Wiatroluza and Samlanka rivers contained above-average numbers of TC and FC from the point of view of their utilization for recreation. FS dominated in most water samples of the examinated lakes.

12

Total viable count and concentration of enteric bacteria in bottom sediments from the Czarna Hancza River, Northeast Poland

100%

Niewolak S.

Polish Journal of Environmental Studies

|

1998

|

tom 07

|

nr 5

Studies were carried out to determine counts of TVC 20oC, TVC 37oC, TC, FC, FS and Clustridium perfringens in bottom sediments of the Czarna Hancza River, from about 1 cm layer, at 10 stations located in Suwalki region (stations 1 and 2), in the villages Sobolewo (stations 3 and 4), the old river bed of the Czarna Hancza and its intlow to Lake Wigry (stations 5 and 6), and in the villages Czerwony Folwark, Mackowa Ruda, Buda Ruska and Wysoki Most (stations 7-10) east of Lake Wigry. Bottom sediments from stations 1-4 and 7-l0 were mostly sandy, while at stations 5 and 6 they dominated by silty clay. Studies were carried out in 1995 and 1996, at monthly intervals with the exception of winter. Water was examined at the same time. All groups of indicatory bacteria were l00-1000 times more numerous in the bottom sediments than in water. They were usually least numerous in sandy bottom sediments, especially in the villages Buda Ruska and Wysoki Most (stations 9 and 10), and the highest in silty clay sediments in the region of the old Czarna Hancza bed and its inflow to Lake Wigry (stations 5 and 6). Minimal and maximal counts of indicatory bacteria were noted in different months upon particular sampling stations. Only sometimes curves of their numbers corresponded to the respective curves of bacteria counts in water. It is suggested that sanitary and bacteriological studies of water should be supplemented by respective studies of the surface layer of bottom sediments.

13

Bacteriological monitoring of river water quality in the north area of Wigry National Park

100%

Niewolak S.

Polish Journal of Environmental Studies

|

2000

|

tom 09

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nr 4

The paper comprises the results of examination of the number of indicatory bacteria of pollution degree (TVC 20°C, TVC 37°C) and sanitary state (TC, FC, FS) in the water of the Kamionka, Maniówka, Wiatrołuża and Piertanka Rivers in the north area of Wigry National Park in 1996 and the number of these microorganisms taken to Wigry Lake. The investigations were carried out at 3 sites situated on the Kamionka River (in Okuniowiec, below a group of "huciańskie" lakes, before the tributary to Pierty Lake), at 2 sites situated on the Maniówka River (in Lipniak and before the mouth to the Wiatrołuża River), at 5 sites on the Wiatrołuża River (in Wiatrołuża, above and below the estuary of the Maniówka River, at the mouth to Królówek Lake, between Królówek Lake and Pierty Lake) and at 1 site situated on the Piertanka River (between Omułówek Lake and Wigry Lake). The obtained values of bacteriological indices of pollution degree and sanitary state were compared with the criteria of surface water purity estimation suggested in literature and their usefulness for recreation. The number of the examined indicator bacteria found in the present research shows a significant water pollution (II and III class of purity) of the examined rivers in the region of rural areas and the improvement of purity degree along the river course. There were found leakages of pollution from cesspools in the rural areas (it is seen by a significant number of FC in water of given sites) and flows from other arable-forestry-pasture-meadow catchment (which is expressed by a larger number of Streptococci than Escherichia coli) as a main source of water pollution of the examined rivers.

14

The sanitary and bacteriological estimation of surface and undergroung waters in the region of a pig slurry agricultural utilization

100%

Niewolak S.

Polish Journal of Environmental Studies

|

1994

|

tom 03

|

nr 1

A number of indicatory microorganisms of contamination (TVC 2Q°C, TVC 37°C) and sanitary (TC, FC, FS, Clostridium perfringens) states were investigated in pig slurry (fresh and stored in a four-lagoon system), the surface water of the drainage ditch in a region fertilized by the slurry, the water of the Łeba River, and in the ground water (shallow and deep) of this region. The highest numbers of indicatory microorganisms were found in fresh slurry. In the case of stored slurry, their numbers decreased 100-1000 times, reaching after one year the values which are permitted for agriculturally utilizing sewage. The highest numbers of indicatory microorganisms were found in the drainage ditch water and in the shallow and deep piezometers neighbouring ring the lagoons.

15

The evaluation of the degree of pollution and sanitary-bacteriological state of surface water in Wigry Lake, North-East Poland. Part III. Waters of Hanczanska Bay and the areas adjoing Wigry Lake

100%

Niewolak S.

Polish Journal of Environmental Studies

|

2001

|

tom 10

|

nr 3

This work comprises the results of examinations of a number of indicator bacteria on the degree of pollution (TVC 20°C, TVC 37°C), sanitary state (TC, FC, FS), and usefulness for recreation of Hanczanska Bay and areas adjoining Wigry Lake. Adequate studies were made in 1997, a year after the start of 3rd degree sewage treatment in the Wastewater Treatment Plant in Suwalki. All of these bacteria in general were more numerous in the water of Hanczanska Bay, especially in spring-summer. In the waters of northern Ploso of Wigry Lake numbers of bacteria were only periodically numerous at some water samples. The highest percentage of pure water samples fulfilling the requirement for bathing waters was found at sites on the border between Hanczanska Bay and the waters of Northern Ploso of Wigry Lake; the lowest percentage was found at sites in Hanczanska Bay. Gradual decrease of TVC 20°C ( sometimes 37°C) with the distance from the mouth of the Czarna Hancza River towards south-east sites shows this direction of the movement of main water masses of the Czarna Hancza River. No significant differences in percentage of unpolluted water samples stated in Hanczanska Bay and areas adjoing Wigry Lake with a comparison of data from 1994-1996 years of investigation.

16

The avaluation of the contamination degree and the sanitary and bacteriological state of the waters in the Czarna Hancza River in the Region of Suwalki and Wigry National Park

100%

Niewolak S.

Polish Journal of Environmental Studies

|

1998

|

tom 07

|

nr 4

This paper evaluates contamination and sanitary and bacteriological states of the waters in the Czarna Hancza River in the region of Suwalki and Wigry National Park, and treated wastes coming from an urban sewage treatment plant. Microbiological examinations were carried out every month, in three annual cycles, in 1994-1996. Water samples were taken at 11 stations situated in the most characteristic places above Suwalki, below Suwalki, before inflow of treated wastes coming from the sewage treatment plant, in Sobolewo and at the mouth of the Czarna Hancza River to Wigry Lake, besides the tract from Czerwony Folwark to Wysoki Most towards the east of Wigry Lake. The following microbiological indices were examined: TVC 20oC, TVC 37oC, TC, FC, FS, Clostridium perfringens as well as numerical ratio FC:FS. The results of the examination of the number of respective indicator bacteria were compared with the purity criteria, organic substance loading and excrement material and water usefulness for recreation. Unsignificant contamination of the Czarna Hancza River was observed in Stary Brod not far from Suwalki and in Czerwony Folwark, Mackowa Ruda and Buda Ruska in the eastern part of Lake Wigry, significant and/or strong water contamination of this river was noticed on the track from Suwalki to its mouth to Wigry Lake. The sources of the contamination were shown: point (sewages) and spacious (catchment) and leakage from cesspools in Sobolewo. A significant decrease of the number of the examined indicator bacteria of the contamination degree (TVC 20oC, TVC 37oC) of this part of the river in 1995 and 1996 was observed. The usefulness for bathing the examined fragment of the River Czarna Hancza above Suwalki and the fragment from Czerwony Folwark to Wysoki Most towards the east from Wigry Lake was presented.

17

Evaluation of pollution and the sanitary-bacteriological state of Lake Wigry, Poland. Part II. Near-shore waters of Lake Wigry

100%

Niewolak S.

Polish Journal of Environmental Studies

|

1999

|

tom 08

|

nr 3

18

Sanitary and bacteriological evaluation of the efficiency of cleaning common carp reared in wastewater supplied ponds and transferred into running river water

63%

Niewolak S., Tucholski S.

Archiwum Rybactwa Polskiego

|

1995

|

tom 03

|

nr 2

217-228

19

Bacteriological and sanitary evaluation of ponds supplied with biologically pretreated sewage under conditions of fish culture

63%

Niewolak S., Tucholski S.

Archiwum Rybactwa Polskiego

|

1995

|

tom 03

|

nr 2

187-202

20

Sanitary and bacteriological evaluation of common carp, tench and crucian carp reared in a pond supplied with biologically treated sewage

63%

Niewolak S., Tucholski S.

Archiwum Rybactwa Polskiego

|

2000

|

tom 08

|

nr 1

35-48

Ograniczanie wyników

Sanitary and bacterial analysis of water and bottom sediments of a heavily polluted, hypertrophic lake

Przestrzenne rozmieszczenie i sezonowe zmiany liczebnosci bakterii wiazacych azot atmosferyczny [wolnozyjacych] i oligonitrofilnych w wodzie glebowo-gruntowej zlewni jeziora eutroficznego

Sezonowe zmiany liczebnosci chemoautotroficznych bakterii nitryfikacyjnych w wodzie glebowo-gruntowej zlewni jeziora eutroficznego

The occurrence of yeasts in some of the Masurian Lakes

Wpływ promieniowania jonizującego na Streptococcus lactis MB-6 w różnych fazach stadium rozwojowego

Bakterie redukujace NO3 do NO2 i denitryfikacyjne [redukujace NO3 do N2O-N2] w wodzie glebowo-gruntowej zlewni jeziora eutroficznego

Evaluation of pollution and the sanitary-bacteriological state of Lake Wigry, Poland. Part I. Pelagic waters of Lake Wigry

The sanitary and bacteriological quality of water flowing into Wadag Lake

Assessment of hygienic and sanitary states of well and spring waters in Wigry National Park, Poland

A sanitary and bacteriological estimation of water-bearing formations in the Omulewski aquifer, Mazuria

Bacteriogical monitoring of lake water in Wigry National Park in the summer

Total viable count and concentration of enteric bacteria in bottom sediments from the Czarna Hancza River, Northeast Poland

Bacteriological monitoring of river water quality in the north area of Wigry National Park

The sanitary and bacteriological estimation of surface and undergroung waters in the region of a pig slurry agricultural utilization

The evaluation of the degree of pollution and sanitary-bacteriological state of surface water in Wigry Lake, North-East Poland. Part III. Waters of Hanczanska Bay and the areas adjoing Wigry Lake

The avaluation of the contamination degree and the sanitary and bacteriological state of the waters in the Czarna Hancza River in the Region of Suwalki and Wigry National Park

Evaluation of pollution and the sanitary-bacteriological state of Lake Wigry, Poland. Part II. Near-shore waters of Lake Wigry

Sanitary and bacteriological evaluation of the efficiency of cleaning common carp reared in wastewater supplied ponds and transferred into running river water

Bacteriological and sanitary evaluation of ponds supplied with biologically pretreated sewage under conditions of fish culture

Sanitary and bacteriological evaluation of common carp, tench and crucian carp reared in a pond supplied with biologically treated sewage