Year of compilation: 2000

Site description
An extensive area of shallow lakes, pools, reedbeds, Salix woodland and grassland which has developed on a polder (Zuidelijk Flevoland, reclaimed in 1968), having been spared from cultivation. It is situated south of the city of Lelystad, and adjoins Markermeer (038) in the north. This site, together with site 067, formed part of a single, larger site (former site NL031) in the previous pan-European IBA inventory (Grimmett and Jones 1989).

Key biodiversity
The site is the main roost for geese Anser from feeding areas in Flevoland, and is the most important moulting area for Anser anser in north-west Europe.

Pressure/threats to key biodiversity
The main problems affecting the area are the natural succession of vegetation and the effects of botulism on wild birds (`Other' threat, above). In 1997 the area was reconnected with Lepelaarplassen (067) by a 250-m-wide stretch of marshland.

Protected areas
National High International High5,600 ha of IBA covered by Natural Monument (Oostvaardersplassen, 5,600 ha). 5,600 ha of IBA covered by Nature Reserve (Oostvaardersplassen, 5,600 ha). 5,600 ha of IBA covered by Special Protection Area (Oostvaardersplassen, 5,600 ha). 5,600 ha of IBA covered by Ramsar Site (Oostvaardersplassen, 5,600 ha).

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Oostvaardersplassen. Downloaded from on 02/07/2020.