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Location Morocco, Fès
Central coordinates 5o 7.00' West  34o 3.00' North
IBA criteria A1, A4i
Area 750 ha
Altitude 380 - 400m
Year of IBA assessment 2001

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

Site description The site consists of two adjacent water-bodies and surrounding land and covers a total of 750 ha, between altitudes 380 and 400 m. It is located 12 km from Fès, at the north-eastern extremity of the Plaine du Saïs. To the west, the site comprises a shallow, slightly brackish pond covering 10 ha, kept artificially filled by the site managers. It is bordered by a reedbed and some mixed woodland. The larger, eastern lake covers 60 ha and is dependent on rainfall to maintain its level, which therefore varies according to the season and year. The vegetation consists of indigenous Phragmites australis, Scirpus maritimus, Ruppia maritima, Carex sp. and Juncus sp. with introduced Cupressus sp., Pinus sp., Salix sp., Populus sp. and Tamarix sp. There is also some cereal and fruit cultivation, sometimes under glass. Annual precipitation is 540 mm.

Key Biodiversity See Box for key species. The protected nature of the site—it is a ‘Domaine Royal’ with no public access—means that birds are largely undisturbed, and it is therefore of great importance to migrating waterfowl and other species. Around 180 species have been recorded, of which up to 80 are definite or potential breeders. Three other waterfowl species occur in good numbers, sometimes approaching threshold numbers: Anas clypeata (winter maximum 3,658 individuals in 1989); Glareola pratincola (normally between several dozens and a hundred wintering individuals; regular breeder with up to a maximum of a dozen pairs); and Tadorna ferruginea. Up to 20 Aythya nyroca have been recorded (in 1963) and Falco naumanni is a passage migrant. In addition, three species of the Mediterranean North Africa biome are present (see Table 2).

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
Marbled Teal Marmaronetta angustirostris winter  500-600 individuals  A1, A4i  Vulnerable 
Red-knobbed Coot Fulica cristata resident  25 breeding pairs  A4i  Least Concern 
Red-knobbed Coot Fulica cristata winter  1,000 individuals  A4i  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Dwiyate Domaine Royale Other Area 750 is identical to site 750  

Land use

Land-use Extent (% of site)
agriculture -
nature conservation and research -

References Franchimont et al. (1990).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Dwiyate. Downloaded from on 21/10/2016

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