PDF(Pubmed)
Abstract：
Nematodes play vital roles in soil ecosystems. To understand how their communities and coexistence patterns change along the elevation as well as to determine the best explanatory factors underlying these changes, we investigated free-living soil nematodes on Mt. Halla, South Korea, using an amplicon sequencing approach targeting the 18S rRNA gene. Our results showed that there was significant variation in the community diversity and composition of soil nematodes in relation to elevation. The network interactions between soil nematodes were more intensive at the lower elevations. Climatic variables were responsible explaining the elevational variation in community composition and co-occurrence pattern of the nematode community. Our study indicated that climatic factors served as the critical environmental filter that influenced not only the community structure but also the potential associations of soil nematodes in the mountain ecosystem of Mt. Halla. These findings enhance the understanding of the community structure and co-occurrence network patterns and mechanisms of soil nematode along elevation, and the response of soil nematodes to climate change on the vertical scale of mountain ecosystems.
摘要：
线虫在土壤生态系统中起着至关重要的作用。要了解他们的社区和共存模式如何沿海拔变化，并确定这些变化背后的最佳解释因素，我们调查了Mt上的自由生活土壤线虫。Halla,韩国,使用针对18SrRNA基因的扩增子测序方法。我们的结果表明，土壤线虫的群落多样性和组成与海拔有关。在低海拔地区，土壤线虫之间的网络相互作用更为强烈。气候变量是解释线虫群落组成和共生模式的海拔变化的原因。我们的研究表明，气候因素是关键的环境过滤器，不仅影响了群落结构，而且影响了Mt山区生态系统中土壤线虫的潜在关联。Halla.这些发现增强了对海拔沿线土壤线虫群落结构和共现网络模式和机制的理解，以及山地生态系统垂直尺度上土壤线虫对气候变化的响应。
