DE231
Untersee of Lake Constance


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 1990-2000 130-197 individuals C2, C6
Common Goldeneye Bucephala clangula LC passage 1990-2000 2,700-3,056 individuals B1i, C3
Red-crested Pochard Netta rufina LC breeding 1990-2000 100-150 breeding pairs B2
Red-crested Pochard Netta rufina LC passage 1990-2000 5,500-10,803 individuals A4i, B1i, C3
Common Pochard Aythya ferina VU passage 1990-2000 32,000-44,450 individuals A4i, B1i, C3
Ferruginous Duck Aythya nyroca NT breeding 1995 1 breeding pairs C6
Tufted Duck Aythya fuligula LC passage 1990-2000 34,000-53,672 individuals A4i, B1i, C3
Northern Shoveler Spatula clypeata LC passage 1990-2000 2,100-3,846 individuals B1i, C3
Gadwall Mareca strepera LC passage 1990-2000 6,500-11,667 individuals A4i, B1i, C3
Northern Pintail Anas acuta LC non-breeding 1990-2000 550-983 individuals B1i, C3
Common Teal Anas crecca LC passage 1990-2000 4,200-11,000 individuals B1i, C3
Little Grebe Tachybaptus ruficollis LC non-breeding 1990-2000 700-1,102 individuals A4i, B1i, C3
Spotted Crake Porzana porzana LC breeding 1990-2000 5-15 breeding pairs C6
Spotted Crake Porzana porzana LC passage 1993-2000 20 individuals C6
Little Crake Zapornia parva LC breeding 1990-2000 3 breeding pairs C6
Common Coot Fulica atra LC non-breeding 1990-2000 47,070 individuals A4i, B1i, C3
Eurasian Bittern Botaurus stellaris LC breeding 1990-2000 1 breeding pairs C6
Eurasian Bittern Botaurus stellaris LC passage 1993-2000 9 individuals C6
Common Little Bittern Ixobrychus minutus LC breeding 1990-2000 5-7 breeding pairs C6
Black-crowned Night-heron Nycticorax nycticorax LC breeding 1990-2000 1 breeding pairs C6
Great White Egret Ardea alba LC passage 1993-2000 9 individuals C6
Ruff Calidris pugnax LC non-breeding 1990-2000 537 individuals C6
Wood Sandpiper Tringa glareola LC passage 1990-2000 80 individuals C6
Black Tern Chlidonias niger LC passage 1993-2000 200 individuals C2, C6
Common Tern Sterna hirundo LC breeding 1990-2000 67 breeding pairs C6
Western Marsh-harrier Circus aeruginosus LC breeding 1990-2000 3-5 breeding pairs C6
Western Marsh-harrier Circus aeruginosus LC passage 1993-2000 10 individuals C6
Hen Harrier Circus cyaneus LC winter 1990-2000 32 individuals C6
Black Kite Milvus migrans LC breeding 1993-2000 10-30 breeding pairs C6
A4iii Species group - waterbirds n/a non-breeding 1990-2000 48,857-49,692 individuals A4iii, C4
A4iii Species group - waterbirds n/a passage 1991-2000 87,318-138,812 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

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Wollmatinger Ried - Untersee - Gnadensee Naturschutzgebiet 758 protected area contained by site 757
Wollmatinger Ried - Untersee - Gnadensee Landschaftschutzgebiet 10 protected area contained by site 10
Untersee of Lake Constance Ramsar Site, Wetland of International Importance 767 protected area contained by site 767
Untersee des Bodensees Special Protection Area (Birds Directive) 5,915 protected area contained by site 5,513
Stehlwiesen Naturschutzgebiet 10 protected area contained by site 10
Schienerberg Landschaftschutzgebiet 4,196 protected area is adjacent to site 0
Schiener Berg und westlicher Untersee Site of Community Importance (Habitats Directive) 2,596 protected area overlaps with site 1,605
Radolfzeller Aachried Naturschutzgebiet 276 protected area contained by site 275
Radolfzeller Aachmündung Naturschutzgebiet 69 protected area contained by site 68
Mettnau und Radolfzeller Aach unterhalb Singen Site of Community Importance (Habitats Directive) 1,742 protected area overlaps with site 1,240
Insel Reichenau Landschaftschutzgebiet 201 protected area overlaps with site 34
Hornspitze auf der Höri Naturschutzgebiet 190 protected area contained by site 188
Halbinsel Mettnau Naturschutzgebiet 138 protected area contained by site 140
Bodenseeufer auf Gemarkung Markelfingen Naturschutzgebiet 26 protected area contained by site 26
Bodenseeufer (Gmk. Wangen, Hemmenhofen) Naturschutzgebiet 43 protected area contained by site 0
Bodenseeufer (Gmk. Öhningen) Naturschutzgebiet 106 protected area overlaps with site 387
Bodenseeufer (Gmk. Iznang, Moos, Böhringen) Naturschutzgebiet 77 protected area overlaps with site 0
Bodenseeufer (Gmk. Gaienhofen, Horn, Gundholzen) Naturschutzgebiet 151 protected area overlaps with site 0
Bodenseeufer (Gmk. Allensbach, Hegne, Reichenau) Naturschutzgebiet 24 protected area contained by site 0
Bodenseeufer Landschaftschutzgebiet 815 protected area overlaps with site 19
Bodenseeufer Landschaftschutzgebiet 1,013 protected area overlaps with site 0
Bodensee: Wollmatinger Ried, Giehrenmoos & Mindelsee Ramsar Site, Wetland of International Importance 1,286 protected area overlaps with site 0
Bodanrück und westl. Bodensee Site of Community Importance (Habitats Directive) 14,341 protected area overlaps with site 2,588
Bodanrück Landschaftschutzgebiet 5,512 protected area is adjacent to site 21
Bodanrück Special Protection Area (Birds Directive) 6,311 protected area is adjacent to site 0

Habitats

IUCN Habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest -
Shrubland -
Grassland Steppes and dry calcareous grassland, Humid grasslands, Mesophile grasslands -
Wetlands (inland) Standing freshwater, Water fringe vegetation -
For further information about the habitat classification please click here.

Land use

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


Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Untersee of Lake Constance. Downloaded from http://www.birdlife.org on 29/10/2020.