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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Distribution of the populations of small waterfowl and conversion of habitats around Lake Nokoue, southeast Benin (2023)
Auteurs :	Abiola Sylvestre Chaffra, Auteur
Type de document :	Article
Dans :	Malimbus (45(1) March, 2023)
Article en page(s) :	8-18
Résumé :	Hunting, urbanisation and agricultural expansion constitute the greatest threats to waterbirds around Lake Nokoue. Here I analyse the distribution of the Sarothruridae, Rallidae and Jacanidae of the area, using data from 44 field visits from 15 January to 12 June 2022. Land-use data for 2005 and 2021 were used to analyse habitat change. One Sarothruridae (Red-chested Flufftail Sarothrura rufa), six Rallidae (African Crake Crex egregia, Black Crake Zapornia flavirostra, Purple Gallinule Porphyrio porphyrio, Allen's Gallinule P. alleni, Moorhen Gallinula chloropus, Lesser Gallinule Paragallina angulata) and one Jacanidae (Lily-trotter Actophilornis africanus) were found at 769 observation points. In general, these species were gregariously and widely distributed and abundant north of L. Nokoue. The Black Crake and Lily-trotter were the most common and widely distributed, while the flufftail was the least recorded. The distribution of the birds around the lake was limited by the loss of marshlands (5854 ha) and mangroves (70 ha). The annual deforestation rate was much greater (1.6 %) than the rates of reforestation (0 %) and other natural habitat restoration (0.1%), despite the application of awareness-raising and replanting mechanisms. The situation calls for the introduction of a respected zonation plan.

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