Ndiaël basin (including the Trois Marigots)

IBA Criteria

Year of most recent IBA criteria assessment: 2019

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Fulvous Whistling-duck Dendrocygna bicolor LC non-breeding 2014-2017 308-576 individuals B3a
Egyptian Goose Alopochen aegyptiaca LC non-breeding 2014-2017 59-88 individuals B3a
Black Stork Ciconia nigra LC winter 2014-2017 41-109 individuals B3a
Eurasian Spoonbill Platalea leucorodia LC winter 2014-2017 209-563 individuals B3a
Black-crowned Night-heron Nycticorax nycticorax LC non-breeding 2014-2017 2,863-8,540 individuals B3a
Squacco Heron Ardeola ralloides LC non-breeding 2014-2017 85-94 individuals B3a
Black-tailed Godwit Limosa limosa NT winter 2014-2017 196-419 individuals B1a
A4iii Species group - waterbirds n/a winter 1993-1998 100,000-499,999 individuals A4iii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2001 low not assessed not assessed
Was the whole site covered? Yes State assessed by unset
Accuracy of information good

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
No known threats no known threats happening now small area/few individuals (<10%) no or imperceptible deterioration low

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Not assessed Not assessed Not assessed not assessed
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Ndiael Wildlife Reserve 48,898 protected area overlaps with site 46,550
Foret de Tilene et Ndiaye Forest Reserve 3,898 protected area contained by site 0
Foret de Mpal Forest Reserve 2,620 protected area overlaps with site 0
Foret de Keur Momar Sarr Forest Reserve 65,456 protected area overlaps with site 0
Bassin du Ndiaël Ramsar Site, Wetland of International Importance 10,000 protected area contained by site 10,000


IUCN Habitat Habitat detail Extent (% of site)
Artificial/Terrestrial -
Wetlands (inland) -
Grassland -
Desert -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
fisheries/aquaculture -
hunting -
nature conservation and research -
water management -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Ndiaël basin (including the Trois Marigots). Downloaded from on 25/06/2022.