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1

Impact of the European beaver Castor fiber on deadwood resources in lowland river valley – a case study in Wigry National Park (NE Poland)

100%
Misiukiewicz W., Pietka S., Bielinis E.
Polish Journal of Ecology
|
2018
|
tom 66
|
nr 3
The impact of the European beaver Castor fiber on deadwood resources near dams on the rivers of Wigry National Park (northeastern Poland) has been analyzed. The river sampling area was subdivided into the flooded zone, scarp and upland. We found that beaver feeding was limited to the flooded zone and the scarp. Within a distance of 40 m of the river, beavers browsed 75% of all deadwood pieces (wood debris, stumps, dead trees). The wood generated via direct browsing by beavers made up 5% (3.29 m³/ha) of the total wood volume and 35% (641 pieces/ha) of the total number of wood pieces in this region. The beavers mostly left small pieces of wood (with a mean diameter of about 4 cm) at an area after feeding. The deadwood volume and number of pieces were significantly different in front and behind the dam only in the flooded zone. The volume of deadwood in front of the dam in the flooded zone was higher by 65% than behind the dam (102 and 62 m³/ha, respectively), and the number of pieces was higher by 75% (2200 and 1200 pieces/ha, respectively). We prove that beavers generate the majority of dead wood indirectly – by flooding a part of the area. This results leads to conclusion that frequent flooding of a given area may lead to limiting the source of deadwood in the long term. We also confirm that through direct browsing, beavers produce small amounts of thin dead wood with less usefulness for other groups of animals, thus in this way beavers are not able to provide high-quality deadwood resources.
2

The natural wild bee resources [Hymenoptera: Apoidea] of the Wigry National Park

100%
Banaszak J., Krzysztofiak A.
Polskie Pismo Entomologiczne
|
1996
|
tom 65
|
nr 1-2
3

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
|
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.
4

Lake Wigry - the lake adopted by international association of theoretical and applied limnology [SIL Lake Adoption Project]

100%
Kaminski M.
Polish Journal of Ecology
|
1999
|
tom 47
|
nr 2
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

New station of Potamogeton x salicifolius Wolfg. in north-eastern Poland

84%
Pliszko A.
Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana
|
2013
|
tom 17
Potamogeton ×salicifolius Wolfg., the hybrid between P. lucens L. and P. perfoliatus L., is recorded from north-eastern Poland for the fi rst time. The new station is located in the Wigry Lake (the Wigry National Park), within FB19 square unit of the ATPOL cartogram grid. The distribution is updated with one new population of vegetative ramets.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Freshwater molluscs of the Wigry National Park

84%
Kolodziejczyk A.
Folia Malacologica
|
1999
|
tom 07
|
nr 4
7

Littoral malacofauna of the Wigry Lake

84%
Kolodziejczyk A.
Folia Malacologica
|
1998
|
tom 06
|
nr 1-4
8

Phenotypic and genotypic variation of declining segetal flora: the case of Stachys annua (Lamiaceae) populations established in North-Eastern Poland

84%
Skrajna T., Kubicka H., Gozdowski D.
Polish Journal of Ecology
|
2018
|
tom 66
|
nr 1
Stachys annua is a short-lived archaeophyte. In Poland it has been classified as threatened with extinction (VU). It prefers carbonate soils and occurs as a weed in cropped and stubble fields in traditionally farmed areas. Study of the occurrence of Stachys annua in North-Eastern Poland was conducted in 2009–2012 at four sites where the species occupied a minimum area of 30 m² and occurred at each stage of a 4-year crop rotation (spring cereals, winter cereals, tuber crops and stubble fields). The floristically richest communities (25–34 species) were established in unploughed stubble fields, regardless of the habitat conditions. Phytocenoses with S. annua included rare species as demonstrated by high values of floristic value index (FV ranges from 25 to 36). Principle Component Analysis and Spearman rank correlations between plant traits and habitat conditions pointed to soil pH as the factor which determined S. annua phenotypic variation, in particular its height and seed production. The greatest phenotypic variation was found on the alkaline habitat, rich in nitrogen. On the other hand, the cluster analysis showed that the studied populations of inert nitrogen-poor habitats were the most similar. Electrophoretic analysis of storage proteins from S. annua seeds revealed a relatively high genetic similarity of studied populations which was reflected in the similarity coefficients — 0.76 and 0.61 by Dice and Jaccard, respectively. In the case of small or fragmented populations this poses a threat associated with inbreeding and genetic drift of S. annua, which indicates that populations of this species in the study area need to be protected from extinction.
9

Breeding populations and diets of the Sparrowhawk Accipiter nisus and the Hobby Falco subbuteo in the Wigry National Park [NE Poland]

84%
Zawadzka D., Zawadzki J.
Acta Ornithologica
|
2001
|
tom 36
|
nr 1
In 1990-1995,12-15 pairs of Sparrowhawks (9.1/100 km²) and 7-9 pairs of Hobbies (5.6 pairs/100 km²) inhabited the forest-lakeland area of the Wigry National Park (NE Poland). The diet composition of the two species was studied by the analysis of pellets and prey remains. Sparrowhawks fed on birds (97% of prey items, 99% of food biomass), especially Turdus spp., Parus spp. and Fringilla coelebs. Hobbies consumed birds (52% of prey, 94% of biomass) and insects (43% of prey, 1% of biomass). Sparrowhawks specialized in forest birds, positively selecting Parus spp., Turdus spp., Picidae and Ficedula spp. Hobbies hunted mainly birds of open habitats (Alauda arvensis) and woodland (Anthus trivialis).
10

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

84%
Niewolak S.
Polish Journal of Environmental Studies
|
1999
|
tom 08
|
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.
11

Hyphomycetes of lakes of varied trophic state in the Wigry National Park [North-Eastern Poland]

84%
Czeczuga B., Orlowska M., Kozlowska M.
Polish Journal of Ecology
|
2001
|
tom 49
|
nr 3
12

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

84%
Niewolak S.
Polish Journal of Environmental Studies
|
2000
|
tom 09
|
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.
13

A redescription of Gnaphosa microps Holm, a spider new to Polish fauna [ Araneae: Gnaphosidae ]

84%
Stankiewicz A.
Bulletin of the Polish Academy of Sciences. Biological Sciences
|
1995
|
tom 43
|
nr 3-4
14

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

84%
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.
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

67%
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

Potentially pathogenic microorganisms in water and bottom sediments in the Czarna Hancza River

67%
Niewolak S., Opieka A.
Polish Journal of Environmental Studies
|
2000
|
tom 09
|
nr 3
This work comprises the results of a number of Pseudomonas aeruginosa, Aeromonas hydrophila and Staphylococcus sp. in water and bottom sediments in the Czarna Hancza River in the region of Suwalki and Wigry National Park from spring to autumn in 1996. All these microorganisms were found in smaller quantities in water, and in larger quantities in the bottom sediments in the Czarna Hancza River. Their number was generally higher than the number of faecal bacteria of Escherichia coli group both in water and bottom sediments in this river at site 1 (in Stary Brod above Suwatki) and at sites 7-10 (in Czerwony Folwark, Mackowa Ruda, Buda Ruska, Wysoki Most, to the east of Wigry Lake). Their number was close to or lower than the number of faecal bacteria of Escherichia coli group at the sites situated above and below the inflow of treated sewage from the Treatment Sewage Plant in Suwalki (2a and 2b sites), in Sobolewo (3 and 4 sites), in the region of the old river-bed of the Czarna Hancza River (5 site) and its mouth to Wigry Lake (6 site). There were fewer at the sites of sand deposits, more at the sites of clay-argillaceous deposits. In the research period they were more numerous in the second half of summer. The number of Pseudomonas aeruginosa, Aeromonas hydrophila and Staphylococcus sp. should be taken into account as well as the number of the indicators bacteria of a sanitary state (total coliforms, faecal coliforms and faecal streptococci) while estimating the usefulness of water in the Czarna Hancza River for recreation.
17

Meioneta mossica Schikora 1993 in Poland [Araneae: Linyphiidae]

67%
Kupryjanowicz J., Stankiewicz A., Hajdamowicz I.
Bulletin of the Polish Academy of Sciences. Biological Sciences
|
1997
|
tom 45
|
nr 1
18

Bacteria active in the conversion of nitrogen and sulphur compounds in rainfall collected under crowns and flowing down tree trunks of pines and spruces in Wigry National Park

67%
Niewolak S., Korzeniewska E., Staszewska J., Krzysztofiak L.
Archiwum Ochrony Środowiska
|
2005
|
tom 31
|
nr 4
19

Hydromycoflora fungi of small forest lakes Suchary in the Wigry National Park

67%
Czeczuga B.
Acta Mycologica
|
1995
|
tom 30
|
nr 2
20

Występowanie pszczoły obrostki - Dasypoda altercator HARRIS [Hymenoptera, Apoidea] w Wigierskim Parku Narodowym

59%
Krzysztofiak A.
Wiadomości Entomologiczne
|
1994
|
tom 13
|
nr 2
134
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