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close| Location | France, Pays de la Loire |
| Central coordinates | 1o 30.00' West 47o 18.00' North |
| IBA criteria | B1i, C3 |
| Area | 2,700 ha |
| Altitude | 5 - 10m |
| Year of IBA assessment | 2000 |
Site description The site includes marshes, reedbeds (Phragmites) and aquatic vegetation.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Northern Shoveler Anas clypeata | winter | 1991 | 500-2,500 individuals | - | B1i, C3 | Least Concern |
| Northern Pintail Anas acuta | passage | 1991 | 500-4,000 individuals | - | B1i, C3 | Least Concern |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Acquisitions par la LPO-Loire-Atlantique | Private Reserve | 150 | protected area contained by site | 150 | |
| FR030 | Hunting Reserve | 69 | protected area contained by site | 69 | |
| LPO-BirdLife parcels - FR030 | Private Reserve | 150 | protected area contained by site | 150 | |
| Marais de l'Erdre - FR5200624 | Habitats Directive | 2,565 | protected area overlaps with site | 1,992 | |
| Marais de l'Erdre - FR5212004 | Birds Directive | 2,751 | protected area overlaps with site | 2,055 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Wetlands (inland) | Water fringe vegetation | 100% |
Land use
| Land-use | Extent (% of site) |
|---|---|
| agriculture | - |
| fisheries/aquaculture | - |
| hunting | - |
| tourism/recreation | - |
| urban/industrial/transport | - |
Management considerations The main threats are sand and peat extraction and problems with water management during the summer (`Other' threats, above).
Protection status National Low International None69 ha of IBA covered by 3 Hunting Reserves (total area 69 ha). 150 ha Private Reserve (LPO-BirdLife, 150 ha).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Marais de Mazerolles-Petit Mars. Downloaded from http://www.birdlife.org on 23/05/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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