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
Whooper Swan Cygnus cygnus LC winter 1993 36 individuals C6
Eurasian Bittern Botaurus stellaris LC passage 1994 1 individuals C6
Eurasian Golden Plover Pluvialis apricaria LC passage 1993 150 individuals C6
Ruff Calidris pugnax LC passage 1994 130 individuals C6
Wood Sandpiper Tringa glareola LC passage 1994 8 individuals C6
Common Tern Sterna hirundo LC breeding 1995 17 breeding pairs C6
Short-eared Owl Asio flammeus LC winter 1995 1 individuals C6
Hen Harrier Circus cyaneus LC winter 1992 2 individuals C6

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)
Weseraue Special Protection Area (Birds Directive) 303 protected area overlaps with site 220
NSG Mittelweser Naturschutzgebiet 91 unknown 0
Neue Weser Naturschutzgebiet 35 protected area contained by site 35
Mittelwesermarsch Landscape Protected Area 60 unknown 0
Korbinsel Landschaftschutzgebiet 72 protected area is adjacent to site 0
Bremen 1968 36. Änderung Landschaftschutzgebiet 1,536 protected area overlaps with site 257
Arsten-Habenhausen Naturschutzgebiet 1 protected area overlaps with site 1


IUCN Habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest -
Grassland Humid grasslands -
Wetlands (inland) Standing freshwater -
Unknown -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
hunting -
nature conservation and research -
water management -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Mittelwesermarsch. Downloaded from on 17/05/2022.