La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Bird biodiversity in cities: Some explanations (2010)
Titre original:	Bird biodiversity in cities
Auteurs :	F Malher, Auteur
Type de document :	Article
Dans :	Alauda (78(2) juin, 2010)
Article en page(s) :	297-305
Résumé :	There are only a few studies on urban birds in France in comparison to the numerous papers on this topic from other countries (especially in the last quarter of the 20th century). In this paper we try to summarize the knowledge about the process and the consequence for birds living in urban areas. In contrast to what is generally assumed, the number of species in urban areas has really increased during the 20th century particularly since 1950. This process is still in progress. Abundance of birds in urban areas can reach higher values than in "natural" areas although diversity decreases along the urbanization gradient. Generalist, resident and hole-nesting woodland species or high nesting species are mainly involved. After having summarized the main features of urban habitats, we present the main life-history traits which are modified in species living in urban areas. Finally, we present the adaptation mechanisms showed by several species in urban habitats.

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