Revealing kleptoparasitic and predatory tendencies in an African mammal community using camera traps: a comparison of spatiotemporal approaches

Camera trap data are increasingly being used to characterise relationships between the spatiotemporal activity patterns of sympatric mammal species, often with a view to inferring inter-specific interactions. In this context, we attempted to characterise the kleptoparasitic and predatory tendencies of spotted hyaenas Crocuta crocuta and lions Panthera leo from photographic data collected across 54 camera trap stations and two dry seasons in Tanzania's Ruaha National Park. We applied four different methods of quantifying spatiotemporal associations, including one strictly temporal approach (activity pattern overlap), one strictly spatial approach (co-occupancy modelling), and two spatiotemporal approaches (co-detection modelling and temporal spacing at shared camera trap sites). We expected a kleptoparasitic relationship between spotted hyaenas and lions to result in a positive spatiotemporal association, and further hypothesised that the association between lions and their favourite pre...红外相机陷阱（camera trap）数据正愈发广泛地被应用于表征同域分布哺乳动物物种的时空活动模式之间的关联，其核心研究目标常为推断物种间的相互作用。在此研究背景下，本研究依托坦桑尼亚鲁阿哈国家公园内54个红外相机陷阱站点、两个旱季采集的影像数据，尝试刻画斑鬣狗（Crocuta crocuta）与狮子（Panthera leo）的盗食寄生与捕食倾向。本研究采用四种方法量化时空关联，具体包括1种纯时间维度分析方法（活动模式重叠度分析）、1种纯空间维度分析方法（共占用建模），以及2种时空结合分析方法（共检测建模与共享相机陷阱站点的时间间隔分析）。本研究推测斑鬣狗与狮子间的盗食寄生关系将呈现正向时空关联，并进一步提出假设：狮子与其偏好的猎物之间的关联……