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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	Distribution, density and diversity of breeding birds in coastal dunes in West France (Charente Maritime) (2016)
Auteurs :	Francois Lovaty, Auteur
Type de document :	Article
Dans :	Alauda (84(2) 2016)
Article en page(s) :	81-99
Résumé :	The birds breeding on dunes (two areas of 37.5 ha and 40 ha in size) were censused by the mapping method from 2008 to 2011 in this area of West Atlantic France (Charente-Maritime). A total of thirty breeding species are successively present along a gradient of 5 biotopes ranging from mobile dunes to wooded dunes. Most of the species show a strict habitat selection. The mobile dunes with Ammophila arenaria are the habitat of the Crested Lark Galerida cristata, the grey dunes with Helichtysum stoechas and Artemisia campestris are that of the Eurasian Skylark Alauda arvensis and the Tawny Pipit Anthus campestris whereas the wooded dunes invaded by Pinus pinaster harbour the Woodlark Lullula arborea and the Cirl Bunting Emberiza cirlus, replaced by warblers such as the Common Whitethroat Sylvia communis and the Melodious Warbler Hippolais polyglotta where brambles are occurring. The Crested Tit Lophophanes cristatus and the Western Bonelli's Warbler Phylloscopus bonelli occur on wooded dunes (Pinus pinaster and Quercus ilex). The youngest habitats harbour more rare birds than more aged habitats do. Diversity and sedentarity of birds increase from mobile dunes to wooded dunes. The whole dune system must be preserved because each habitat type depends on the previous one or on the following one.

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