Tøndermarsken, Magisterkog and Rudbøl Sø (2973)
Denmark, Europe
Site overview
KBA status: confirmed
Global KBA criteria: D1a
Year of last assessment: 2000
National site name: Tøndermarsken, Magisterkog og Rudbøl Sø
Central coordinates: Latitude: 54.9000, Longitude: 8.7167
System: marine, terrestrial
Elevation (m): 0 to 10
Area of KBA (km2): 65.279
Protected area coverage (%): 99.98
KBA classification: Global
Legacy site: Yes
Site details
Site description: A large area of reclaimed land with meadows along the Vidåen river. In the western part a saltwater lagoon is maintained by pumping in seawater. The inner (eastern) parts are mainly agricultural and the outer (western) parts predominantly pasture. There is also some standing freshwater, notably Rudbøl Sø, and reedbeds.
Rationale for qualifying as KBA: This site qualifies as a Key Biodiversity Area of international significance that meets the thresholds for at least one criterion described in the Global Standard for the Identification of KBAs.
Additional biodiversity: This is a very important staging area for several waterbirds, with total numbers exceeding 20,000 individuals. Several species listed on Annex I of the EC Birds Directive breed at the site, including Botaurus stellaris, Ciconia ciconia, Circus aeruginosus, Circus pygargus, Porzana porzana, Recurvirostra avosetta, Sterna hirundo, S. paradisaea, S. albifrons, Chlidonias niger (the most important site in Denmark for this species) and Luscinia svevica.
Habitats
Land use: agriculture (85%) | nature conservation and research (15%)
| IUCN Habitat | Coverage % | Habitat detail |
|---|---|---|
| Artificial - Terrestrial | 70 | |
| Marine Intertidal | 15 | |
| Marine Coastal/Supratidal | 15 |
Threats
| Threat level 1 | Threat level 2 | Threat level 3 | Timing |
|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops | Shifting agriculture | Ongoing |
| Invasive & other problematic species, genes & diseases | Invasive non-native/alien species/diseases | Named species | Ongoing |
| Invasive & other problematic species, genes & diseases | Problematic native species/diseases | Named species | Ongoing |
| Human intrusions & disturbance | Recreational activities | Ongoing |