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首页> 外文期刊>Slovak Raptor Journal >Landscape-related variation in the diet composition of the common buzzard (Buteo buteo) in Belarus
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Landscape-related variation in the diet composition of the common buzzard (Buteo buteo) in Belarus

机译：白俄罗斯常见秃鹰（Buteo buteo）饮食组成中与景观相关的变化

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摘要

We examined common buzzard (Buteo buteo) feeding patterns in landscapes with different habitat structure in Belarus. A total of 561 pellets and prey remains were sampled in 1998-2012 from which 1065 prey and other food items were identified. Effects of habitat structure on buzzard diet composition were investigated using correlation analysis. The most abundant group in buzzards’ diets were small rodents (49-80% of the biomass consumed), followed by other mammals and birds. Reptiles, anurans, fish and invertebrates constituted the rest. Proportions of all food items varied greatly between landscapes. The mean-weighted body mass of vertebrate prey hunted by common buzzards in different landscapes ranged from 107 to 244 g, constituting on average 180 g. Among small rodents, voles of the genus Microtus were hunted selectively. The food niche breadth was directly proportional to the amount of forest habitat. With increasing amount of forest habitat, the proportion of Microtus voles in buzzards’ diets decreased and the proportions of other food items grew. These findings confirm the majority of previous results indicating feeding opportunism of the common buzzard. Our investigation enables better understanding of predator-prey interactions and the prey choice of the common buzzard in Belarus.
机译：我们研究了白俄罗斯具有不同栖息地结构的景观中的普通秃鹰（But）。在1998-2012年期间，共采样了561个颗粒物和猎物，从中识别出1065个猎物和其他食品。使用相关分析研究了栖息地结构对肉食结构的影响。秃鹰饮食中最多的一组是小型啮齿动物（占生物量消耗的49-80％），其次是其他哺乳动物和鸟类。其余则是爬行动物，无脊椎动物，鱼类和无脊椎动物。不同景观中所有食物的比例差异很大。在不同的景观中，由普通的肉食猎物捕猎的脊椎动物猎物的平均体重为107到244 g，平均为180 g。在小型啮齿动物中，有选择地猎杀田鼠属的田鼠。食物生态位的宽度与森林栖息地的数量成正比。随着森林栖息地数量的增加，肉食中田鼠的比例下降，其他食物的比例增加。这些发现证实了大多数先前的结果，表明了普通秃鹰的进食机会。我们的调查可以更好地了解白俄罗斯的食肉动物与猎物之间的相互作用以及常见秃鹰的猎物选择。

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