Abstract：
Analyses of temporal partitioning and overlaps in activity rhythms are pivotal to shed light on interspecific coexistence between similar species or prey and predators. In this work, we assessed the overlap of activity rhythms between the Eurasian beaver Castor fiber and its potential competitors and predators through camera trapping in an area in Central Italy. Interspecific overlaps of temporal activity patterns were estimated for the beavers, potential predators (the red fox Vulpes vulpes and the grey wolf Canis lupus), and a potential competitor, the coypu Myocastor coypus. The beavers showed a mostly crepuscular behaviour. Although high temporal overlap was observed between the Eurasian beavers and the red foxes and grey wolves, the activity of the beavers did not overlap with that of the predators. Accordingly, the beavers were more active on the darkest nights, i.e., avoiding bright moonlight.
摘要：
对活动节奏的时间划分和重叠进行分析对于揭示相似物种或猎物与捕食者之间的种间共存至关重要。在这项工作中,我们通过在意大利中部地区的相机诱捕，评估了欧亚海狸Castor纤维与其潜在竞争对手和捕食者之间的活动节奏重叠。估计海狸的时间活动模式的种间重叠，潜在的捕食者（红狐狸Vulpesvulpes和灰狼犬狼疮），和潜在的竞争对手,CoypuMyocastorCoypus.海狸表现出主要的黄昏行为。尽管在欧亚海狸与红狐狸和灰狼之间观察到了高度的时间重叠，海狸的活动与掠食者的活动没有重叠。因此，海狸在最黑暗的夜晚更加活跃，即，避免明亮的月光。
