PDF(Pubmed)
Abstract：
Mountain ecosystems harbor evolutionarily unique and exceptionally rich biodiversity, particularly in insects. In this study, we characterized the diversity, community stability, and assembly mechanisms of butterflies on a subtropical mountain in the Chebaling National Nature Reserve, Guangdong Province, China, using grid-based monitoring across the entire region for two years. The results showed that species richness, abundance, and Faith\'s phylogenetic diversity decreased with increasing elevation; taxonomic diversity played a considerable role in mediating the effects of environmental changes on stability. Moreover, our results showed that stochastic processes are dominant in governing the assembly of butterfly communities across all elevational gradients, with habitats at an elevation of 416-580 m subjected to the strongest stochastic processes, whereas heterogeneous selection processes displayed stronger effects on the assembly of butterfly communities at 744-908 m, 580-744 m, and 908-1072 m, with abiotic factors inferred as the main driving forces. In addition, significant differences were detected between the barcode tree and the placement tree for the calculated β-NTI values at 416-580 m. Overall, this study provides new insights into the effects of environmental change on the stability and assembly of butterflies in Chebaling, which will be beneficial for biodiversity conservation and policy development.
摘要：
山区生态系统拥有进化上独特和异常丰富的生物多样性，尤其是昆虫。在这项研究中,我们以多样性为特征，社区稳定,和蝴蝶在Chebaling国家级自然保护区的亚热带山上的组装机制，广东省,中国,在整个地区使用基于网格的监控两年。结果表明,物种丰富度,丰度,随着海拔的增加，Faith的系统发育多样性下降；分类多样性在调节环境变化对稳定性的影响中起着相当大的作用。此外，我们的结果表明，在所有海拔梯度上，随机过程在控制蝴蝶群落的集合中占主导地位，海拔416-580米的栖息地受到最强的随机过程，而异质选择过程对744-908m的蝴蝶群落的组装表现出更强的影响，580-744米，908-1072米，以非生物因素为主要驱动力。此外,对于416-580m处的计算β-NTI值，在条形码树和放置树之间检测到显着差异。这项研究为环境变化对Chebaling蝴蝶的稳定性和组装的影响提供了新的见解，这将有利于生物多样性保护和政策制定。
