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close| 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 |
Ornithological information The site holds 20,000 or more waterbirds on passage and in winter, on a regular basis (including Podiceps cristatus 4,706 (wintering); Melanitta nigra 4,006 (wintering); Haematopus ostralegus 4,950 (wintering)). Species of global conservation concern that do not meet IBA criteria: Acrocephalus paludicola (passage).
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 |
| White-winged Scoter 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 |
| Black-winged Stilt Himantopus himantopus | breeding | 1995 | 4-7 breeding pairs | - | C6 | Least Concern |
| 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 |
| Bar-tailed Godwit Limosa lapponica | passage | 1997 | 500-1,000 individuals | - | A4i, B1i, C2 | Least Concern |
| Common Redshank Tringa totanus | passage | 1997 | 1,000-10,000 individuals | - | A4i, B1i, C3 | Least Concern |
| Sandwich Tern Sterna 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 landscapes (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% |
Management considerations The expansion of the harbour is the major threat to the site. Other threats include sand and gravel extraction and considerable hunting pressure at night.
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 (2013) Important Bird Areas factsheet: Estuaire et embouchure de la Seine. Downloaded from http://www.birdlife.org on 22/05/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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