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La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	A territory scale analysis of habitat preferences of the declining Ortolan Bunting Emberiza hortulana (2016)
Auteurs :	Mattia Brambilla, Auteur ; Marco Gustin, Auteur ; Severino Vitulano, Auteur ; Irene Negri, Auteur ; Claudio Celada, Auteur
Type de document :	Article
Dans :	Bird Study (63(1) janvier 2, 2016)
Article en page(s) :	52-57
Résumé :	Capsule Ortolan Bunting occurrence is associated with bare ground, Lucerne, shrub cover and hedgerows/tree rows.Aims To assess the habitat features selected by Ortolan Buntings at the territory level in semi-open landscapes, in the northern Apennines of Italy.Methods We mapped territories in ten different plots and built a habitat selection model comparing 52 occupied cells with 52 unoccupied ones (cell size: 1 ha). We built multivariate adaptive regression splines models based on ground-measured variables.Results The model revealed an association with intermediate Lucerne cover (50% of the cell), high shrub cover, bare ground (≥5%) and hedgerows/tree rows (≥25 m/ha). The most important driver of occurrence was bare ground (optimum at 5–20%).Conclusion The maintenance of the mosaic and low-intensity farmed landscape, the promotion of Lucerne and the conservation/restoration of hedgerows/tree rows, may be promoted through the Rural Development Programme. The conservation of bare soil, grassland and shrubs at optimum amount at fine-scale could be the object of an agri-environment scheme targeted specifically at the Ortolan Bunting.
En ligne :	http://www.tandfonline.com/doi/full/10.1080/00063657.2015.1126219

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