|Location||Senegal, Louga,St Louis|
|Central coordinates||15o 50.00' West 16o 14.00' North|
|IBA criteria||A1, A4i|
|Altitude||0 - 20m|
|Year of IBA assessment||2001|
Site description Lac de Guiers, lying in the far north of the country, c.20 km south-west of Richard-Toll, is the only large freshwater lake in Senegal. It lies in the dry valley of the Ferlo river and is fed only by rainfall or by floodwaters coming down the Senegal river and allowed to flow south into the lake through sluices and a canal at Richard-Toll. The lake is 35 km long and 7.5 km wide at its widest point. At high-water it covers an area of nearly 17,000 ha. It is used as a water-supply for Dakar, as well as for local consumption and to supply water for the sugar refinery at Richard-Toll. It is surrounded by Sahel thorn-bush savanna, used for livestock-rearing and ‘walo’ (flood-recession agriculture) and areas of irrigated cultivation, including extensive sugar-cane plantations and rice-fields. There are permanent herb swamps dominated by Phragmites and Typha along parts of the lake shore and scattered acacias and other trees used for roosting and breeding by a wide variety of colonial nesting herons and egrets.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Lesser Flamingo Phoeniconaias minor||winter||1991||1,170 individuals||-||A1||Near Threatened|
|Glossy Ibis Plegadis falcinellus||winter||1984||2,600 individuals||-||A4i||Least Concern|
|Eurasian Spoonbill Platalea leucorodia||winter||1986||170 individuals||-||A4i||Least Concern|
|African Spoonbill Platalea alba||winter||1986||250 individuals||-||A4i||Least Concern|
|Arabian Bustard Ardeotis arabs||resident||1998||-||-||Near Threatened|
|Savile's Bustard Eupodotis savilei||resident||1998||-||-||Least Concern|
|White-winged Tern Chlidonias leucopterus||winter||1988||2,700 individuals||-||A4i||Least Concern|
|River Prinia Prinia fluviatilis||resident||1998||present [units unknown]||-||A1||Least Concern|
|Chestnut-bellied Starling Lamprotornis pulcher||resident||1998||-||-||Least Concern|
|Sudan Golden Sparrow Passer luteus||resident||1998||-||-||Least Concern|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Artificial landscapes (terrestrial)||23%|
|Land-use||Extent (% of site)|
Other biodiversity The lake contained a resident population of the mammal Trichechus senegalensis (VU) until the mid-1980s, but this population was isolated from animals in the main Senegal river and appeared to be declining. It is probably now extinct.
References Chappuis et al. (1988), Delaporte and Dubois (1990), Hughes and Hughes (1992), Trolliet et al. (1992).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Lac de Guiers. Downloaded from http://www.birdlife.org on 12/12/2013
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