Detection histories of mesocarnivores in agricultural areas of Southern Chile

We obtained mesocarnivore detection/non-detection data from 180 sampling units (4 km2 each) located in the agricultural landscapes of southern Chile from January-April of 2019. We used single-species occupancy models to investigate the associations of forest fragmentation, forest loss, and private land ownership subdivision (as a measure of human use intensification) with the occurrence of four mesocarnivores (güiña, grey fox, culpeo fox, and Molina’s hog-nosed skunk), and extended this framework to two-species occupancy models to assess patterns of mesocarnivore co-occurrence with domestic carnivores. We also assessed whether co-occurrence of native and domestic carnivores led to shifts in species’ temporal activity.

We hypothesized that the occurrence of native mesocarnivores was largely mediated by human use intensification variables only, the occurrence of domestic mesocarnivores only, or a combination of both. Our results largely supported the human use intensification hypothesi...

本研究于2019年1—4月，对位于智利南部农业景观中的180个采样单元（每个单元面积为4平方千米）开展调查，获取了中型食肉动物（mesocarnivore）的检测/未检测数据。
本研究采用单物种占用模型（single-species occupancy models），探究森林破碎化、森林丧失以及私有土地权属细分（作为人类利用强度的衡量指标）与4种中型食肉动物（güiña、灰狐、科尔佩奥狐及莫利纳猪鼻臭鼬）的发生关联；并将该分析框架拓展至双物种占用模型（two-species occupancy models），以评估中型食肉动物与家养食肉动物的共存模式。
此外，本研究还探究了本土食肉动物与家养食肉动物的共存是否会引发物种时间活动节律的转变。
本研究提出假设：本土中型食肉动物的发生主要仅由人类利用强度变量、仅由家养中型食肉动物的发生情况，或是二者共同介导。本研究结果在很大程度上支持了人类利用强度相关假说……