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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	310 individuals	C2, C6
Tundra Swan Cygnus columbianus	LC	winter	1990-1999	400 individuals	A4i, B1i, B2, C2
White Stork Ciconia ciconia	LC	non-breeding	1994	68 individuals	C6
White Stork Ciconia ciconia	LC	breeding	1990-1999	15 breeding pairs	C6
Black Kite Milvus migrans	LC	breeding	1990-1999	4 breeding pairs	C6
A4iii Species group - waterbirds	n/a	winter	1990-1999	min 20,000 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
1937	Weißer Berg	Landscape Protection Area	<1
1948	Ehrenfriedhof Essel	Landschaftschutzgebiet	<1
1958	Der Reiherhorst bei Ahlden	Landschaftschutzgebiet	1
1958	Hohes Leineufer	Landschaftschutzgebiet	<1
1974	Bierder Koppel	Landschaftschutzgebiet	1
1976	Böhmetal	Landschaftschutzgebiet	10
1977	Eisseler Teiche	Landscape Protection Area	<1
1987	Allerniederung bei Klein Häuslingen	Naturschutzgebiet	2
1992	Untere Allerniederung	Special Protection Area (Birds Directive)	58
1993	Steinkuhle	Landscape Protection Area	<1
1999	Aller (mit Barnbruch); untere Leine, untere Oker	Site of Community Importance (Habitats Directive)	70
2014	Alte Aller und Weiße Berge	Landschaftschutzgebiet	3
2014	Weserniederung zwischen Kanalmündung bei Eissel und Clüverswerder	Landschaftschutzgebiet	2
2016	Untere Allerniederung im Landkreis Verden	Nature Reserve	9
2016	Untere Allerniederung im Landkreis Verden	Landscape Protection Area	5
2016	Allerschleifen zwischen Wohlendorf und Hülsen	Naturschutzgebiet	3

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands, Mesophile grasslands	74
Wetlands (inland)	Standing freshwater, Fens, transition mires and springs	20

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lower Aller lowlands (Germany). Downloaded from https://datazone.birdlife.org/site/factsheet/lower-aller-lowlands-iba-germany on 22/11/2024.