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  • Country: 
  • Site number: 
  • Area: 
    8,178 ha
  • Designation date: 
  • Coordinates: 
    59°06'N 23°43'E
Materials presented on this website, particularly maps and territorial information, are as-is and as-available based on available data and do not imply the expression of any opinion whatsoever on the part of the Secretariat of the Ramsar Convention concerning the legal status of any country, territory, city or area, or of its authorities, or concerning the delimitation of its frontiers or boundaries.


Leidissoo. 27/01/10; Lääne County; 8,178 ha; 59°06'N 023°44'E. Nature Reserve, part of Natura 2000 (SCI and SPA), and IBA. Part of an extensive wilderness area in northwestern Estonia, it consists of a variety of mire types and habitats of European interest and supports many bird species listed under the European Birds Directive annex I, including the Black Stork Ciconia nigra and Short-toed Eagle Circaetus gallicus. Most typical are poor fens with Sweet Gale Myrica gale and transitional mire plant communities. A relatively large (ca. 100 ha) Great Fen-sedge Cladium mariscus fen occurs, as well as small patches of endangered rich fen communities supporting endemic Alpine Saw-wort Saussurea alpina subsp. esthonica. The site acts as a refuge for animals with large habitat requirements such as Wolf Canis lupus and Lynx Lynx lynx, for which it is also a breeding site, and Brown Bear Ursus arctos which hibernates in the site. Leidissoo plays a significant role in maintaining the hydrological balance and water quality of the region, and traditional berry and mushroom picking as well as small-scale hunting are practiced within the site. Threats include the intensification of forestry and the drainage of surrounding areas. Ramsar Site no. 1998. Most recent RIS information: 2012.

Administrative region: 

  • National legal designation: 
    • Nature Reserve
  • Regional (international) legal designations: 
    • EU Natura 2000
  • Last publication date: 


Ramsar Information Sheet (RIS)