Habitat used by an insular population of Eurasian Scops Owl Otus scops on Oleron Island (Western France) | Habitats fréquenté par une population insulaire de Petit-duc scops Otus scops (île d'Oleron, Charente-Maritime, France)
2012
Bavoux, C. | Burneleau, G. | Barbraud, C. | Métivier, J.-M. | Roulin, A. | Mauzac ; Association | Centre d'Études Biologiques de Chizé (CEBC) ; Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) | Institut de Radioprotection et de Sûreté Nucléaire (IRSN) | DEE Département d'Ecologie et Evolution ; Université de Lausanne = University of Lausanne (UNIL)
International audience
显示更多 [+] 显示较少 [-]英语. Singing males of Scops Owl were censused over a 27-year period (1981-2007) on Oleron, an island under heavy pressure of urbanization and tourism. Habitats used by the species were inferred from the location of singing individuals. Variation in their numbers was analyzed as a function of the structure of the male's home range. The present analysis is based on a previous study in abundance and distribution of singing males and on an accurate mapping of the available habitats over the island. On Oleron 80% of singing males were contacted in wooded areas. By modelling the effect of habitat traits we showed that the density of singing males was positively influenced by the importance of wooded areas and negatively influenced by urbanized areas. This situation is in contrast with what has been described elsewhere for the Scops Owl, particularly in the Mediterranean region where this species is much more linked to urbanized areas. The occurrence in wooded areas on Oleron may both reflect insect abundance and severe reduction in cultivated areas.
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