Database release:

For Special Protection Areas (SPA),
Proposed Sites for Community Importance (pSCI),
Sites of Community Importance (SCI) and
for Special Areas of Conservation (SAC)



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1.1 Type


1.2 Site code


1.3 Site name

Viešvilės aukštupio pelkynas

1.4 First Compilation date


1.5 Update date


1.6 Respondent:

Name/Organisation:State Service for Protected Areas under the Ministry of Environment

1.7 Site indication and designation / classification dates

Date site proposed as SCI:2004-03
Date site confirmed as SCI: No information provided
Date site designated as SAC:2019-05
National legal reference of SAC designation:


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2.1 Site-centre location [decimal degrees]:


2.2 Area [ha]


2.3 Marine area [%]


2.4 Sitelength [km] (optional):

No information provided

2.5 Administrative region code and name

NUTS level 2 code Region Name

2.6 Biogeographical Region(s)

Boreal (100.00 %)


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3.1 Habitat types present on the site and assessment for them

Annex I Habitat types Site assessment
Code PF NP Cover [ha] Cave [number] Data quality A|B|C|D A|B|C
      RepresentativityRelative SurfaceConservationGlobal
2330  info      0.4  0.00 
3150  info      26  0.00 
3260  info      0.00 
4030  info      16  0.00 
6120  info      -1  0.00 
6230  info      0.00 
6270  info      10  0.00 
6430  info      0.00 
6450  info      0.00 
6530  info      0.00 
7110  info      310  0.00 
7140  info      40  0.00 
7160  info      0.35  0.00 
9010  info      700  0.00 
9050  info      12  0.00 
9080  info      620  0.00 
9160  info      0.00 
91D0  info      1020  0.00 
91E0  info      130  0.00 
  • PF: for the habitat types that can have a non-priority as well as a priority form (6210, 7130, 9430) enter "X" in the column PF to indicate the priority form.
  • NP: in case that a habitat type no longer exists in the site enter: x (optional)
  • Cover: decimal values can be entered
  • Caves: for habitat types 8310, 8330 (caves) enter the number of caves if estimated surface is not available.
  • Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation)

3.2 Species referred to in Article 4 of Directive 2009/147/EC and listed in Annex II of Directive 92/43/EEC and site evaluation for them

Species Population in the site Site assessment
G Code Scientific Name S NP T Size Unit Cat. D.qual. A|B|C|D A|B|C
      MinMax  Pop.Con.Iso.Glo.
I1920Boros schneideri    500  5000  trees 
F1163Cottus gobio               
P1393Drepanocladus vernicosus    500  2000  area 
I1082Graphoderus bilineatus    10  100       
F1096Lampetra planeri    length   
I1042Leucorrhinia pectoralis    50  200 
P1903Liparis loeselii    20  50 
M1355Lutra lutra         
I1060Lycaena dispar    10  50       
M1361Lynx lynx   
F1145Misgurnus fossilis    22  22  length   
I6177Phengaris teleius    10  50 
P1477Pulsatilla patens   
P1528Saxifraga hirculus    20  50 
  • Group: A = Amphibians, B = Birds, F = Fish, I = Invertebrates, M = Mammals, P = Plants, R = Reptiles
  • S: in case that the data on species are sensitive and therefore have to be blocked for any public access enter: yes
  • NP: in case that a species is no longer present in the site enter: x (optional)
  • Type: p = permanent, r = reproducing, c = concentration, w = wintering (for plant and non-migratory species use permanent)
  • Unit: i = individuals, p = pairs or other units according to the Standard list of population units and codes in accordance with Article 12 and 17 reporting (see reference portal)
  • Abundance categories (Cat.): C = common, R = rare, V = very rare, P = present - to fill if data are deficient (DD) or in addition to population size information
  • Data quality: G = 'Good' (e.g. based on surveys); M = 'Moderate' (e.g. based on partial data with some extrapolation); P = 'Poor' (e.g. rough estimation); VP = 'Very poor' (use this category only, if not even a rough estimation of the population size can be made, in this case the fields for population size can remain empty, but the field "Abundance categories" has to be filled in)

3.3 Other important species of flora and fauna (optional)


Population in the site


Group CODE Scientific Name S NP Size Unit Cat. Species Annex Other categories
     MinMax C|R|V|PIVVABCD
A085Accipiter gentilis           
Aegolius funereus (Linnaeus, 1758)         
Alcedo atthis (Linnaeus, 1758)         
A056Anas clypeata             
Aquila pomarina C. L. Brehm, 1831         
Asio flammeus (Pontoppidan, 1763)         
Bazzania trilobata (L.) Gray    30  35  area           
Betula humilis               
Betula nana               
Brenthis daphne               
Caprimulgus europaeus Linnaeus, 1758    20  30         
Carex magellanica               
Ceruchus chrysomelinus               
Circus aeruginosus (Linnaeus, 1758)           
Circus pygargus (Linnaeus, 1758)         
A207Columba oenas           
Corallorhiza trifida               
Crex crex (Linnaeus, 1758)    males       
Cygnus cygnus (Linnaeus, 1758)           
Dactylorhiza baltica               
Dactylorhiza fuchsii               
Dactylorhiza incarnata               
Dactylorhiza maculata               
Dendrocopos leucotos (Bechstein, 1802)         
5184Diphasiastrum complanatum                 
Dryocopus martius (Linnaeus, 1758)    12         
Eriophorum gracile               
Ficedula parva (Bechstein, 1792)    20  30         
Gladiolus imbricatus               
Glaucidium passerinum (Linnaeus, 1758)         
Gnorimus variabilis               
Grus grus (Linnaeus, 1758)    10  15         
Haliaeetus albicilla (Linnaeus, 1758)         
Hammarbya paludosa             
5189Huperzia selago               
Lanius collurio Linnaeus, 1758           
1400Leucobryum glaucum                 
Listera cordata             
Lullula arborea (Linnaeus, 1758)           
5104Lycopodium annotinum                 
5105Lycopodium clavatum                 
Lyrurus tetrix (Linnaeus, 1758)    15  20  males       
Microstylis monophyllos             
Nymphaea alba               
Pandion haliaetus (Linnaeus, 1758)         
Peltis grossa               
Peplis portula               
Pernis apivorus (Linnaeus, 1758)         
Picus canus Gmelin, 1788         
Pluvialis apricaria (Linnaeus, 1758)         
Porzana porzana (Linnaeus, 1766)    males       
1409Sphagnum spp.                 
A659Tetrao urogallus all others    30  40       
Tetrastes bonasia (Linnaeus, 1758)    20  30         
2473Vipera berus               
  • Group: A = Amphibians, B = Birds, F = Fish, Fu = Fungi, I = Invertebrates, L = Lichens, M = Mammals, P = Plants, R = Reptiles
  • CODE: for Birds, Annex IV and V species the code as provided in the reference portal should be used in addition to the scientific name
  • S: in case that the data on species are sensitive and therefore have to be blocked for any public access enter: yes
  • NP: in case that a species is no longer present in the site enter: x (optional)
  • Unit: i = individuals, p = pairs or other units according to the standard list of population units and codes in accordance with Article 12 and 17 reporting, (see reference portal)
  • Cat.: Abundance categories: C = common, R = rare, V = very rare, P = present
  • Motivation categories: IV, V: Annex Species (Habitats Directive), A: National Red List data; B: Endemics; C: International Conventions; D: other reasons


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4.1 General site character

Habitat class % Cover

Total Habitat Cover


Other Site Characteristics

The site is situated in the Karšuva plain (sub-district of Lower Nemunas plain physical-geographical region), in microregion of Smalininkai-Eičiai ancient alluvial plain. It comprises Karšuva forest tract, in the central part of which Viešvilė mire is located. It is a complex of mires in the upper reaches of Viešvilė rivulet, surrounded by dry coniferous forests on a sandy fluvial plain with continental dunes. This mire complex is of glacial origin. The mire includes 2 large raised bogs, fens, transitional bogs and small lakes formed by glacial meltwater flows that filled the former depressions. The average depth of the peat layer in the largest Artoji bog is 3.6 m, the maximum depth - 9.8 m. The average depth of the peat layer in a smaller Glitis bog - 2.3 m, the maximum - 6,8 m. The territory lies in the old valley of Nemunas river, in sandy alluvial plain with poor podzolic soils. The average yearly temperature - +6.5°C. The average temperature of the warmest month (July) - +16.9°C, while the average temperature of the coldest month (January) - -4.4°C. The average amount of precipitation - 832 mm per year. Mire complex is surrounded by coniferous forest. Forest species composition is rather homogenous - pine woods prevail. There are no bigger lakes and rivers. The site includes a large Artoji raised bog (1072 ha), and a smaller Glitis bog (455 ha) located in the eastern part of the territory. Two small bogs are located in the western part of the site. Small dystrophic lakes Buveinis (5.4 ha) and Glitis (13.2 ha) together with the Viešvilė and Ištakos rivulets form a unique hydrological complex surrounded by raised bogs. Raised bog vegetation dominates, but vast areas along the rivulets are covered by sedge fens (Carex appropinquata, C.vesicaria, C.nigra) and permanently flooded forests of the black alder (with Carex acutiformis, Iris pseudacorus). The central part of the raised bog is dominated by open communities of Calluna vulgaris-Eriophorum vaginatum-Sphagnum rubellum, Baeothryon caespitosum-Sphagnum sp. Pine forests with Ledum palustre, Rubus chamaemorus grow on the slopes of the raised bog. Dry pine forests surround the mire complex. Wet spruce forests occur only along the bog edges. Other habitats include small areas of flooded meadows and forest clearings.

4.2 Quality and importance

The site is distinguished by its very mosaic and vulnerable habitats. The river Viešvilė is one of the clearest tributaries of Nemunas river with almost unchanged valley. The mire complex is a very valuable nature area distinguished by particularly high diversity of flora and fauna, including numerous rare and endangered species of plants, insects, mammals and birds. It is one of the key wetlands in Lithuania playing a substantial role in the whole hydrological system of the region. The area contains representative and unique example of the natural wetland type, characteristic of the Eastern Baltic Region. It supports vulnerable, endangered and critically endangered species and threatened ecological communities, also populations of plant and animal species important for maintaining biological diversity. The site is distinguished by different landscapes: bogged sandy ancient alluvial plains with raised bogs, wavy sandy alluvial plains with coniferous forests. It supports migratory bird species providing important staging habitats.

4.3 Threats, pressures and activities with impacts on the site

The most important impacts and activities with high effect on the site

Negative Impacts
RankThreats and pressures [code]Pollution (optional) [code]inside/outside [i|o|b]
Positive Impacts
RankActivities, management [code]Pollution (optional) [code]inside/outside [i|o|b]

Rank: H = high, M = medium, L = low
Pollution: N = Nitrogen input, P = Phosphor/Phosphate input, A = Acid input/acidification,
T = toxic inorganic chemicals, O = toxic organic chemicals, X = Mixed pollutions
i = inside, o = outside, b = both

4.4 Ownership (optional)

No information provided

4.5 Documentation (optional)

Butleris A.1997. Rare bird species in the Viesvile Strict Nature Reserve. Raudoni lapai 5: 5-8 (in Lithuanian). Lapele M (ed.).1997. Flora and fauna of the Lithuanian Strict Nature Reserves: 1-168 (in Lithuanian). Useliene A., Uselis V.1997. Rare plant species in protective zone of Viesvile Strict Nature Reserve. Raudoni Lapai 5: 31-32 (in Lithuanian)


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5.1 Designation types at national and regional level (optional):

Code Cover [%]

5.2 Relation of the described site with other sites (optional):

No information provided

5.3 Site designation (optional)

Viesvile State Strict Nature Reserve with the buffer zone was established in 1991. In 1993 it was designated as Ramasar site.


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6.1 Body(ies) responsible for the site management:

Organisation:Viesvile Strict Nature Reserve administration

6.2 Management Plan(s):

An actual management plan does exist:

No, but in preparation

6.3 Conservation measures (optional)

No information provided



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Map delivered as PDF in electronic format (optional)