La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	West African mangroves harbour millions of wintering European warblers (2014)
Auteurs :	Leo Zwarts, Auteur ; Jan Van der Kamp, Auteur ; Erik Klop, Auteur ; MARTEN Sikkema, Auteur ; Eddy Wymenga, Auteur
Type de document :	Article
Dans :	Ardea (102(2) Fall, 2014)
Article en page(s) :	121-130
Résumé :	Mangrove forests attract many insectivorous birds. Bird density in West African mangroves in January-March 2014 is higher in Avicennia (21 birds/ha canopy) than in Rhizophora (11 birds/ha). The Palearctic species are dominant in the most northern mangroves (14-16 degrees N), but further south resident birds become as numerous as migrants (11-12 degrees N). The European Reed Warbler Acrocephalus scirpaceus is the most common winter visitor in West African mangroves between 12 and 16 degrees N, with an estimated total of 4-6 million birds, which may account for 30-50% of the European population. The mortality of European Reed Warblers while crossing the Sahara desert in spring is higher when their Sudan-Guinean wintering areas have been drought-stricken in the preceding winter. European Reed Warblers wintering in mangroves suffer the same fate, because mangroves in the Sahel region massively die off in drought years.

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