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Location Denmark, Vestsjællands Amtskommune
Central coordinates 11o 20.00' East  55o 35.00' North
IBA criteria A4i, B1i, B2, C2, C3, C6
Area 2,890 ha
Altitude 2 - 10m
Year of IBA assessment 2000

Dansk Ornitologisk Forening

Site description A large, shallow freshwater lake with associated grazed meadows and reedbeds and a small river valley.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Greylag Goose Anser anser passage  1994  2,024 individuals  good  B1i, C3  Least Concern 
Whooper Swan Cygnus cygnus passage  1994  1,993 individuals  good  A4i, B1i, C2  Least Concern 
Tundra Swan Cygnus columbianus non-breeding  1996  475 individuals  good  A4i, B1i, B2, C2, C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Åmose, Tissø, Halleby Å og Flasken - DK005X223 Habitats Directive 3,262 protected area contains site 2,890  
Store Åmose, Skarresø og Bregninge Å - DK005X226 Habitats Directive 3,400 protected area is adjacent to site 0  
Tissø, Åmose og Hallenslev Mose - DK005X100 Birds Directive 2,887 protected area contained by site 2,887  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland) Standing freshwater  95%
Artificial - terrestrial Arable land  5%

Land use

Land-use Extent (% of site)
forestry -
hunting -
tourism/recreation -

Protection status National Low International High2,890 ha of IBA covered by Special Protection Area (Tissø, Lille åmose and Hallenslev Mose, 2,890 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Tissø, Lille Åmose and Hallenslev Mose. Downloaded from on 20/10/2014

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