基于时空分析南滚河国家级自然保护区亚洲象的集群特点OA

Animal grouping is widespread in natural populations,but detecting individual group membership is still in the stage of empirical identification based on photos and videos,without refined technical details.In this study,we exam-ine grouping characteristics of Asian elephants(Elephas maximus)using infrared-triggered camera trapping techniques in Nangunhe National Nature Reserve from November 2022 to May 2023.We deployed 64 camera traps totaling 7 635 effective camera working days.Through meticulous analysis,we identified 255 individually valid photos of Asian ele-phants and a total of 17 Asian elephants.The capture rates of group and solitary were 18.63％and 16.83％respective-ly.Through spatial analyses such as distance grouping and correlation,combined with the results of spatial niche over-lap,we found that 11 Asian elephants had a high degree of similarity and correlation in their spatial utilization,and formed a group.The spatial activity of two solitaries was highly consistent and formed a small group,while the other solitaries were differentiated.In addition,the activity rhythm data showed that the daily activity rhythm of 11 Asian ele-phants was highly consistent,and the overall distribution was unimodal.Similarly,the daily activity rhythm of the soli-taries highlighted the differences between the small group and the other solitaries.Consequently,the grouping character-istics of the Asian elephants are characterized by a family group of 11 Asian elephants and a small group composed of 2 solitaries,with 4 remaining solitaries.This study fills the research gap in understanding the characteristics of Asian ele-phant groups in Nangunhe and provides important support for the population management and protection of this species and sympatric species in protected areas.