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The site was identified as important in 2000 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
Northern Shoveler Spatula clypeata	LC	winter	1997	1,800-4,000 individuals	B1i, C3
Northern Shoveler Spatula clypeata	LC	passage	1997	3,000-5,000 individuals	A4i, B1i, C3
Gadwall Mareca strepera	LC	breeding	1997	40-50 breeding pairs	B2
Northern Pintail Anas acuta	LC	passage	1997	1,000-1,200 individuals	B1i, C3
Eurasian Coot Fulica atra	LC	passage	1997	20,000 individuals	B1i, C3
Eurasian Spoonbill Platalea leucorodia	LC	breeding	1991	10-15 breeding pairs	B1i, B2, C2, C6
Common Little Bittern Ixobrychus minutus	LC	breeding	1991	1-10 breeding pairs	C6
Black-crowned Night Heron Nycticorax nycticorax	LC	breeding	1994	55 breeding pairs	C6
Purple Heron Ardea purpurea	LC	breeding	1991	40-80 breeding pairs	C2, C6
Little Egret Egretta garzetta	LC	breeding	1991	180 breeding pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	1997	20-40 breeding pairs	C6
Black Kite Milvus migrans	LC	breeding	1991	15-25 breeding pairs	C6
A4iii Species group - waterbirds	n/a	passage	1997	20,000-49,999 individuals	A4iii, C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2000) may differ.

Year	Protected Area	Designation	% overlap with IBA
1980	Lac de Grand-Lieu	Réserve naturelle nationale	48
1995	Lac de Grand-Lieu	Site of Community Importance (Habitats Directive)	100
1995	Lac de Grand-Lieu	Ramsar Site, Wetland of International Importance	100
2005	PRES DE SAINT-LUMINE ET DE SAINT-MARS	Terrain acquis par le Conservatoire du Littoral	<1
2005	RIVES NORD DU LAC DE GRAND LIEU	Terrain acquis par le Conservatoire du Littoral	<1
2006	Lac de Grand Lieu	Special Protection Area (Birds Directive)	100
2007	LAC DE GRAND LIEU	Terrain acquis par le Conservatoire du Littoral	49
2008	Lac de Grand-Lieu	Réserve naturelle régionale	11

Habitat1	Habitat detail	% of IBA
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation	58
Grassland	Humid grasslands	29
Artificial/Terrestrial	Arable land, Perennial crops, orchards and groves	18
Forest	Broadleaved deciduous woodland	-
Shrubland	Heathland	-

1. IUCN Habitat classification.

Land use	% of IBA
fisheries/aquaculture	100
hunting	94
agriculture	48
forestry	2
urban/industrial/transport	1

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lac de Grand-Lieu (France). Downloaded from https://datazone.birdlife.org/site/factsheet/lac-de-grand-lieu-iba-france on 22/11/2024.