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Location Latvia, Valka district
Central coordinates 25o 46.00' East  57o 42.00' North
IBA criteria C1, C2, C3, C6
Area 7,335 ha
Altitude 45 - 50m
Year of IBA assessment 2004

Latvijas Ornitologijas Biedriba

Site description The site consists of the vast Seda marsh (used for peat extraction) surrounded by forests, bordering the Seda river floodplain, including wet meadows, in the northern part. Peat extraction quarries gradually fill up with water and form a complex wetland system of ponds rich in emergent vegetation. Listed as an IBA since 2000 [3, 1]. Fully protected: there is a 98.7% overlap with the Seda marsh restricted nature reserve, a candidate SPA. The gap between IBA and pSPA boundaries is due to differences in methods in boundary setting.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Bean Goose Anser fabalis passage  1994-2004  2,000-5,000 individuals  unknown  C3  Least Concern 
Whooper Swan Cygnus cygnus passage  1994-2004  300-600 individuals  unknown  C2  Least Concern 
Eurasian Bittern Botaurus stellaris breeding  1994-2004  10-20 breeding pairs  unknown  C6  Least Concern 
Corncrake Crex crex breeding  1994-2004  20-30 breeding pairs  unknown  C1  Least Concern 
Little Crake Zapornia parva breeding  1994-2004  5-10 breeding pairs  unknown  C6  Least Concern 
Spotted Crake Porzana porzana breeding  1994-2004  10-20 breeding pairs  unknown  C6  Least Concern 
Common Crane Grus grus passage  1994-2004  500-700 individuals  unknown  C2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Sedas purvs Nature Reserve 7,300 protected area overlaps with site 7,239  


IUCN habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland; Mixed woodland; Native coniferous woodland  26%
Grassland Mesophile grasslands  3%
Wetlands (inland) Raised bogs; Standing freshwater  52%
Artificial - terrestrial Arable land; Highly improved re-seeded landscapes  minor
Shrubland Scrub  18%

Land use

Land-use Extent (% of site)
forestry -
hunting -
urban/industrial/transport -
fisheries/aquaculture -
nature conservation and research -
tourism/recreation -
agriculture -

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Seda marsh. Downloaded from on 21/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife