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The site was identified as important in 2002 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	winter	1990-1999	208 individuals	C2
Tundra Swan Cygnus columbianus	LC	winter	1990-1999	520 individuals	A4i, B1i, B2, C2
Bean Goose Anser fabalis	LC	winter	1990-1999	1,383 individuals	B1i, C3
Greater White-fronted Goose Anser albifrons	LC	winter	1990-1999	12,300 individuals	B1i, C3
Common Teal Anas crecca	LC	winter	1992	13,525 individuals	B1i, C3
Ruff Calidris pugnax	LC	breeding	1990	3 breeding pairs	C6
Black Tern Chlidonias niger	LC	winter	1990-1999	110 individuals	C2, C6
Common Tern Sterna hirundo	LC	breeding	1990	1 breeding pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	1990-1999	15 breeding pairs	C6
Bluethroat Luscinia svecica	LC	breeding	1990-1999	61 breeding pairs	C6
A4iii Species group - waterbirds	n/a	winter	1990-1998	28,046 individuals	A4iii, C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2002) may differ.

Year	Protected Area	Designation	% overlap with IBA
1968	Bremen 1968 36. Änderung	Landschaftschutzgebiet	2
1984	Strohauser Plate	Landschaftschutzgebiet	<1
1985	Rechter Nebenarm der Weser	Naturschutzgebiet	12
1999	Nebenarme der Weser mit Strohauser Plate und Juliusplate	Site of Community Importance (Habitats Directive)	24
2004	Unterweser	Special Protection Area (Birds Directive)	82
2004	Teichfledermaus-Gewässer im Raum Bremerhaven/Bremen	Site of Community Importance (Habitats Directive)	1
2006	Unterweser	Site of Community Importance (Habitats Directive)	5
2007	Strohauser Vorländer und Plate	Naturschutzgebiet	27

Habitat1	Habitat detail	% of IBA
Marine Intertidal		major (>10)
Marine Neritic		major (>10)
Grassland	Humid grasslands	minor (<10)

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lower reaches of River Weser, unembanked area (Germany). Downloaded from https://datazone.birdlife.org/site/factsheet/lower-reaches-of-river-weser-unembanked-area-iba-germany on 22/11/2024.