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Location Morocco, Tanger
Central coordinates 6o 0.00' West  35o 34.00' North
IBA criteria A1, A4i
Area 14,000 ha
Altitude 0 - 50m
Year of IBA assessment 2001

Groupe de Recherche pour la Protection des Oiseaux au Maroc (Affiliate)



Site description The site consists of the lower reaches of the Oued M’harhar and Oued Al Hachef, which join to form the 3-km-long estuarine river of the Oued Tahadart, the surrounding land and a sandy stretch of the coast between Tanger (Tangiers) and Asilah. Habitats include marshy basins, coastal mudflats, many small freshwater and brackish merjas and dayas, areas of rough pasture and some patches of cork-oak woodland.

Key Biodiversity See Box for key species. The site harbours one of the few populations of Otis tarda in Morocco—the only country in North Africa where this species occurs. Precise data on population size are not available, but 35 individuals were seen at Tahadart and 55 in Al Hachef–Charkane during surveys in 1998, and evidence of breeding was observed (courtship displays, nests). Thousands of migrant waders, gulls and waterfowl pass through Oued Tahaddart, particularly in winters with heavy rainfall when much of the site is inundated. Up to 600 Grus grus and hundreds of Phoenicopterus ruber and Platalea leucorodia have been recorded, but none of these species is known to have exceeded IBA threshold criteria. Numenius tenuirostris formerly occurred as a wintering visitor.

Non-bird biodiversity: None known to BirdLife International.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Great Bustard Otis tarda resident  present  A1  Vulnerable 
Charadrius alexandrinus winter  1,020 individuals  A4i  Not Recognised 

IBA Monitoring

2014 very high not assessed low
unset
Medium - based upon reliable but incomplete / partially representative data

Agricultural expansion and intensification livestock farming and ranching (includes forest grazing) - scale unknown/unrecorded happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Human intrusions and disturbance work and other activities happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Natural system modifications dams & water management/use - abstraction of surface water (agricultural use) happening now some of area/population (10-49%) very rapid to severe deterioration high
Residential and commercial development commercial and industrial development happening now some of area/population (10-49%) very rapid to severe deterioration high
Residential and commercial development housing and urban areas happening now some of area/population (10-49%) very rapid to severe deterioration high
Residential and commercial development tourism and recreation areas happening now some of area/population (10-49%) very rapid to severe deterioration high
Transportation and service corridors roads and railroads happening now some of area/population (10-49%) very rapid to severe deterioration high

Whole area of site (>90%) covered by appropriate conservation designation  No management planning has taken place  Very little or no conservation action taking place  low 

Land use

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

References BCEOM-SECA (1995c), Hellmich et al. (1999).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Oued Tahadart. Downloaded from http://www.birdlife.org on 29/12/2014

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