La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Breeding bird assemblages of eastern Mediterranean shrublands: composition, organisation and patterns of diversity
Auteurs :	Nikos Katsimanis, Auteur ; Michalis Dretakis, Auteur ; Triantaphyllos Akriotis, Auteur ; Moysis Mylonas, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (147(3) JUL 2006)
Article en page(s) :	419-427
Langues:	Anglais
Résumé :	The patterns of alpha-diversity and the structure and organisation of breeding bird assemblages were studied in four vegetation stages (characteristic of Mediterranean shrublands) on an eastern Mediterranean island (Crete, Greece): low phrygana, tall phrygana, low maquis and tall maquis. Phrygana differed significantly from maquis, in regard to the community metrics, composition and the homogeneity of bird assemblages. Moreover, detrended correspondence analysis ordered the census plots along a continuum of increasing vegetation height. On the other hand, within-maquis differences were few, while no significant differences were found within phrygana stages. Based upon the observed patterns, we recognise three vegetation groups: (1) phrygana, with low alpha-diversity and abundance and homogenous bird assemblages; (2) low maquis with relatively high alpha-diversity and heterogenous bird assemblages; and (3) tall maquis with relatively high alpha-diversity and heterogenous assemblages in which "woodland" bird species contribution is prominent.

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