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Location France, Haute-Normandie
Central coordinates 0o 18.00' East  49o 26.00' North
IBA criteria A1, A4i, A4iii, B1i, B2, C1, C2, C3, C4, C6
Area 21,100 ha
Altitude 0 - 5m
Year of IBA assessment 2000

Ligue Pour La Protection des Oiseaux



Site description An estuary with mudflats, saltmarshes, sand and shingle-beaches, reedbeds (Phragmites), wet meadows, urban and industrial areas. The area includes the port of Le Havre.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta winter  1997  277-1,631 individuals  B1i, C3  Least Concern 
Greater Scaup Aythya marila winter  1997  1-160 individuals  B2  Least Concern 
Melanitta fusca winter  1997  1,500 individuals  B2  Not Recognised 
Eurasian Spoonbill Platalea leucorodia passage  1991  140 individuals  A4i, B1i, C2  Least Concern 
Western Marsh-harrier Circus aeruginosus breeding  1997  3-5 breeding pairs  C6  Least Concern 
Corncrake Crex crex breeding  1996  26-31 breeding pairs  A1, C1, C6  Least Concern 
Spotted Crake Porzana porzana breeding  1991  1-10 breeding pairs  C6  Least Concern 
Himantopus himantopus breeding  1995  4-7 breeding pairs  C6  Not Recognised 
Pied Avocet Recurvirostra avosetta winter  1997  437-1,360 individuals  A4i, B1i, B2, C2  Least Concern 
Pied Avocet Recurvirostra avosetta breeding  1997  10 breeding pairs  C6  Least Concern 
Pied Avocet Recurvirostra avosetta passage  1997  5,000 individuals  A4i, B1i, C2  Least Concern 
Common Redshank Tringa totanus passage  1997  1,000-10,000 individuals  A4i, B1i, C3  Least Concern 
Bar-tailed Godwit Limosa lapponica passage  1997  500-1,000 individuals  A4i, B1i, C2  Least Concern 
Sandwich Tern Thalasseus sandvicensis passage  1991  1,500-2,000 individuals  B1i, C2  Least Concern 
Common Tern Sterna hirundo passage  1991  1,500-2,000 individuals  B1i, C2  Least Concern 
Bluethroat Luscinia svecica breeding  1991  1-10 breeding pairs  C6  Least Concern 
A4iii Species group - waterbirds winter  1997  20,000 individuals  unknown  A4iii, C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Baie de Seine Hunting Reserve 7,800 protected area contained by site 7,800  
Banc herbeux Hunting Reserve 1,200 protected area contained by site 1,200  
Estuaire de la Seine National Nature Reserve 8,528 protected area overlaps with site 6,528  
Estuaire de la Seine Nature Reserve 3,770 protected area overlaps with site 1,000  
ESTUAIRE DE LA SEINE - FR2300121 Habitats Directive 10,931 protected area overlaps with site 9,165  
Estuaire et marais de la Basse Seine - FR2310044 Birds Directive 18,840 protected area overlaps with site 12,937  
Mannevilles National Nature Reserve 93 protected area contained by site 93  
MARAIS VERNIER ET BASSE VALLEE DE LA RISLE - FR2300122 Habitats Directive 7,662 protected area overlaps with site 5,112  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Grassland Humid grasslands  15%
Wetlands (inland) Rivers and streams; Standing brackish and salt water; Standing freshwater; Tidal rivers and enclosed tidal waters; Water fringe vegetation  -
Artificial - terrestrial Other urban and industrial areas; Ruderal land  20%
Coastline Lagoons; Mud flats & sand flats; Salt marshes; Sand dunes & beaches; Shingle & stony beaches  -

Land use

Land-use Extent (% of site)
agriculture 10%
fisheries/aquaculture -
hunting 40%
tourism/recreation -
urban/industrial/transport 15%

Protection status National Partial International Low1,000 ha of IBA covered by Nature Reserve (Estuaire de la Seine, 3,770 ha). 93 ha of IBA covered by Nature Reserve (Les Mannevilles, 93 ha). 9,000 ha of IBA covered by 2 Hunting Reserves (Baie de Seine; Banc herbeux; total area 9,000 ha). 1,300 ha of IBA covered by Special Protection Area (Estuaire de la Seine, 2,750 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Estuaire et embouchure de la Seine. Downloaded from http://www.birdlife.org on 30/10/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife