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DK105
Roskilde Fjord, Selsø and Kattinge Søerne
Location Denmark, Frederiksborg Amtskommune
Central coordinates 12o 5.00' East  55o 45.00' North
IBA criteria A4i, A4iii, B1i, B2, B3, C2, C3, C4, C6
Area 13,180 ha
Altitude 0 - 20m
Year of IBA assessment 2000

Dansk Ornitologisk Forening



Ornithological information This is a very important site for wintering Cygnus olor, Aythya fuligula, Mergus merganser and Fulica atra. Winter visitors can exceed 20,000 individuals, but numbers fluctuate widely in relation to winter harshness. Circus aeruginosus, Recurvirostra avosetta, Sterna hirundo, S. paradisaea and S. albifrons, listed on Annex I of the EC Birds Directive, breed at the site. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (max. 7, wintering).

Site description A long shallow fjord with islands and islets. Coastal areas have saltmarshes, agricultural land and forested peninsulas. The Fagus/Quercus forest on Bognæs includes areas of old-growth forest.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Mute Swan Cygnus olor winter  1994  7,155 individuals  -  A4i, B1i, C3  Least Concern 
Whooper Swan Cygnus cygnus winter  1994  306 individuals  -  B1i, C2  Least Concern 
Tundra Swan Cygnus columbianus passage  1993  300 individuals  -  A4i, B1i, C2  Least Concern 
Tufted Duck Aythya fuligula winter  1995  57,000 individuals  -  A4i, B1i, C3  Least Concern 
Common Merganser Mergus merganser winter  1994  3,700 individuals  -  A4i, B1i, C3  Least Concern 
Common Coot Fulica atra winter  1994  19,271 individuals  -  B1i, C3  Least Concern 
Pied Avocet Recurvirostra avosetta breeding  1994  109 breeding pairs  good  B3  Least Concern 
Mew Gull Larus canus breeding  1996  1,731-2,277 breeding pairs  good  B2  Least Concern 
Common Tern Sterna hirundo breeding  1994  363 breeding pairs  good  C6  Least Concern 
Arctic Tern Sterna paradisaea breeding  1994  301 breeding pairs  good  C6  Least Concern 
A4iii Species group - waterbirds winter  1994  -  unknown  A4iii, C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Jægerspris Nordskov - DK003X107 Birds Directive 1,524 protected area is adjacent to site 0  
Roskilde Fjord Game Reserve 0 protected area contained by site 4,285  
Roskilde Fjord - DK003X209 Habitats Directive 13,473 protected area contains site 13,180  
Roskilde Fjord, Kattinge Vig og Kattinge Sø - DK004Y105 Birds Directive 13,147 protected area contained by site 13,147  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest   5%
Coastline Salt marshes  5%
Sea Sea inlets and coastal features  80%
Artificial landscapes (terrestrial) Arable land  10%

Land use

Land-use Extent (% of site)
unknown -

Management considerations It is possible that the site boundaries should be extended to include Isefjord but further data on bird populations are needed.

Protection status National Partial International High13,180 ha of IBA covered by Special Protection Area (Roskilde Fjord, Kattinge Vig and Lake, 13,180 ha).

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Recommended citation  BirdLife International (2013) Important Bird Areas factsheet: Roskilde Fjord, Selsø and Kattinge Søerne. Downloaded from http://www.birdlife.org on 21/05/2013

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