| Titre : | Diurnal raptor community wintering in an extensively used farmland |
| Auteurs : | Lukasz Jankowiak, Auteur ; Marcin Antczak, Auteur ; Zbigniew Kwiecinski, Auteur ; Pawel Szymanski, Auteur ; Marcin Tobolka, Auteur ; Piotr Tryjanowski, Auteur |
| Type de document : | Article |
| Dans : | Ornis Fennica (92(2) 2015) |
| Article en page(s) : | 76-86 |
| Résumé : | The raptor community wintering in an extensively managed farmland was studied in Western Poland during seven winters (2006-2013). Data on raptor presence and numbers was obtained using the point count method. In the present paper we focus on the variance in abundance and habitat selection of diurnal predators: Common Buzzard (Buteo buteo), Rough-legged Buzzard (Buteo lagopus), Common Kestrel (Falco tinnunculus), Eurasian Sparrowhawk (Accipiter nisus), Northern Goshawk (Accipiter gentilis) and Great Grey Shrike (Lanius excubitor). The study species were governed by two major habitat gradients in farmland: from amount of mowed meadows towards increasing coverage of arable fields and from non-mowed meadows and shrubs towards increasing coverage of forests. Particular species showed specific responses to habitat variables: plots with large coverage of meadows and high heterogeneity were preferred by Rough-legged Buzzard and Common Kestrel. Great Grey Shrike and Northern Goshawk selected linear habitats, mostly shrub lines, and non-mowed meadows, while Eurasian Sparrowhawk was associated with forests and urban areas. Rough-legged Buzzard avoided arable fields, while Common Buzzard had broader preferences and was more associated with arable fields. We also found that Common Buzzard and Great Grey Shrike abundance was positively related with winter temperature, while Rough-legged Buzzard showed a negative relationship. Our study shows the importance of heterogeneity in farmland as well as meadows as optimal habitats for wintering raptors, and we underline the role of extensive agriculture in conservation of raptors. |
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