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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	61 individuals	C2
Tundra Swan Cygnus columbianus	LC	winter	1990-1999	273 individuals	A4i, B1i, B2, C2
Barnacle Goose Branta leucopsis	LC	passage	1992	45 individuals	C2
Northern Shoveler Spatula clypeata	LC	winter	1980-1989	760 individuals	B1i
Corncrake Crex crex	LC	breeding	1990-1999	76 breeding pairs	A1, B2, C1, C2, C6
Montagu's Harrier Circus pygargus	LC	breeding	1990-1999	4 breeding pairs	C6

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
1964	Breites Wasser	Naturschutzgebiet	3
1978	Hamberger Moor	Landschaftschutzgebiet	2
1980	Worpswede	Landschaftschutzgebiet	7
1985	Moor bei Niedersandhausen	Naturschutzgebiet	<1
1985	Pennigbütteler Moor	Naturschutzgebiet	<1
1986	Torfkanal und Randmoore	Naturschutzgebiet	2
1987	Wiesen und Weiden nordöstlich des Breiten Wassers	Naturschutzgebiet	2
1990	Hamme-Altarm	Naturschutzgebiet	<1
2000	Untere Wümmeniederung; untere Hammeniederung mit Teufelsmoor	Site of Community Importance (Habitats Directive)	36
2001	Hammeniederung	Special Protection Area (Birds Directive)	79
2014	Hammewiesen	Landschaftschutzgebiet	12

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands	-
Wetlands (inland)	Standing freshwater, Rivers and streams, Raised bogs	-

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Hamme lowlands (Germany). Downloaded from https://datazone.birdlife.org/site/factsheet/hamme-lowlands-iba-germany on 23/11/2024.