Data Zone
Country/territory: Denmark
Subnational region(s): Frederiksborg Amtskommune
IBA Justification: A4i, B1i, C3 (2000)
Area: 5,473 hectares (54.73 km2)
BirdLife Partner(s): Dansk Ornitologisk Forening
| Conservation status of the Important Bird Area (IBA) | |||
|---|---|---|---|
| Year of assessment (most recent) | State (condition) | Pressure (threat) | Response (action) |
| 2010 | very unfavourable | not assessed | not assessed |
Site description (2000 baseline)
A very shallow freshwater lake (the largest in Denmark) surrounded by reedbeds, marsh, cultivated areas and woodland.
Key biodiversity
Few data are available on bird populations.
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Arresø (Denmark). Downloaded from
https://datazone.birdlife.org/site/factsheet/arresø-iba-denmark on 08/01/2025.