email a friend
printable version
Location France, Pays de la Loire
Central coordinates 2o 10.00' West  47o 22.00' North
IBA criteria B1i, B2, B3, C2, C3, C6
Area 18,900 ha
Altitude 0 - 10m
Year of IBA assessment 2000

Ligue Pour La Protection des Oiseaux

Site description Marshes and wet meadows, reedbeds (Phragmites), ponds and arable fields.

Key Biodiversity This is an important site for breeding and wintering waterbirds. It is also the best site for Chlidonias niger in France. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (passage); Aquila clanga (passage); Crex crex (passage); Gallinago media (passage); Acrocephalus paludicola (passage).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Northern Pintail Anas acuta passage  1997  100-2,500 individuals  B1i, C3  Least Concern 
Northern Shoveler Spatula clypeata winter  1997  106-401 individuals  B1i, C3  Least Concern 
Eurasian Spoonbill Platalea leucorodia passage  1991  40-50 individuals  B1i, C2  Least Concern 
Eurasian Bittern Botaurus stellaris breeding  1997  25-45 breeding pairs  B2, C2, C6  Least Concern 
Western Marsh-harrier Circus aeruginosus breeding  1997  35-45 breeding pairs  C6  Least Concern 
Circus cyaneus breeding  1991  5-10 breeding pairs  C6  Not Recognised 
Milvus migrans breeding  1991  30-40 breeding pairs  C6  Not Recognised 
Spotted Crake Porzana porzana breeding  1991  5-10 breeding pairs  B3, C6  Least Concern 
Whiskered Tern Chlidonias hybrida breeding  1991  70 breeding pairs  B2, C6  Least Concern 
Black Tern Chlidonias niger breeding  1991  50-200 breeding pairs  C2, C6  Least Concern 
Bluethroat Luscinia svecica breeding  1991  150-200 breeding pairs  C6  Least Concern 

IBA Monitoring

2013 very high unfavourable low

Biological resource use hunting & collecting terrestrial animals - unintentional effects (species is not the target) happening now whole area/population (>90%) very rapid to severe deterioration very high

Wetlands (inland)   0 0 good (> 90%) poor (40-69%) unfavourable

Whole area of site (>90%) covered by appropriate conservation designation  A management plan exists but it is out of date or not comprehensive  Very little or no conservation action taking place  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
FR022 Hunting Reserve 1,075 protected area contained by site 1,075  
Grande Briere Wetlands of International Importance (Ramsar) 19,000 protected area overlaps with site 18,900  


IUCN habitat Habitat detail Extent (% of site)
Grassland Humid grasslands; Mesophile grasslands  -
Wetlands (inland) Standing brackish and salt water; Water fringe vegetation  -

Land use

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

Protection status National Low International High1,075 ha of IBA covered by Hunting Reserve (1,075 ha). 18,900 ha of IBA covered by Ramsar Site (Grande-Brière, 19,000 ha).

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Marais de Brière. Downloaded from on 25/10/2016

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