IBA Criteria

Year of most recent IBA criteria assessment: 2002

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Northern Shoveler Spatula clypeata LC winter 1990-1999 606 individuals B1i, C3
A4iii Species group - waterbirds n/a winter 1990-1999 min 20,000 individuals A4iii, C4

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Nördl. Teutoburger Wald-Wiehengebirge Nature Park 122,000 protected area contains site 351
Hochwasserrückhaltebecken Alfhausen-Rieste Naturschutzgebiet 375 protected area overlaps with site 123
Alfsee Special Protection Area (Birds Directive) 323 protected area contained by site 291


IUCN Habitat Habitat detail Extent (% of site)
Forest Broadleaved deciduous woodland, Mixed woodland -
Grassland Dry siliceous grassland, Humid grasslands -
Wetlands (inland) Standing freshwater -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
tourism/recreation -
water management -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Alfsee. Downloaded from on 15/08/2022.