Serpentine ecosystems have unique plant communities that have overcome the chemical and physical challenges presented by these soils. However, such a specific soil fauna community has not been identified. It is presumed that such communities are affected directly by the chemical and physical properties of serpentine soils. Here, we focused on nematodes, which comprise a ubiquitous and an abundant group in soil fauna, for comparing their community structure in serpentine and in non-serpentine soils based on morphological approaches. Root biomass, Mg, and Ni were higher in serpentine habitats than non-serpentine ones. In contrast, the soil water content, NO₃⁻ and Ca/Mg ratio were higher at non-serpentine habitats than serpentine ones. Among the nematode community indices, the channel index, which indicates the degree of fungal participation in the decomposition channels of soil food webs, was greater in serpentine (94.5 ± 4.8) than in non-serpentine (44.8 ± 3.2) habitats, whereas the enrichment index, which indicates the abundance and activity of primary detrital consumers, was greater in non-serpentine (56.2 ± 3.7) than in serpentine (40.2 ± 2.9) habitats. A non-metric multidimensional scaling scatterplot showed that nematode communities clustered into both serpentine and non-serpentine habitats by a permutational multivariate analysis of variance. Ca/Mg ratio accounted for the most variation in nematode communities: 90 % of the variation between the sites by envfit. Furthermore, relative frequencies of nine taxa (Filenchus, Malenchus, Mesodorylaimus, Monhystera, Paratylenchus, Plectus, Prodesmodora, Teratocephalus, and Tripyla) were greater in serpentine than in non-serpentine habitats, and those of five taxa (Alaimus, Bastiania, Cervidellus, Diptherophora, and Rhabditidae) were greater in non-serpentine than in serpentine ones by indicator species analysis. Although our study was a small sample size and unit, our findings suggest that the structure of nematode communities reflects the physicochemical properties of serpentine soils.

蛇形生态系统具有独特的植物群落，克服了这些土壤带来的化学和物理挑战。但是，尚未确定这种特定的土壤动物群落。据推测，这些群落直接受到蛇形土壤化学和物理特性的影响。在这里，我们重点研究线虫，该线虫在土壤动物中组成了一个普遍存在的种群，并根据形态学方法比较了它们在蛇形和非蛇形土壤中的群落结构。蛇形生境中的根生物量，镁和镍高于非蛇形生境。与此相反，土壤含水量，NO ₃ ^-非蛇形生境中的Ca和Mg比均高于蛇形生境。在线虫群落指数中，蛇形（94.5±4.8）比非蛇形（44.8±3.2）生境中的通道指数更大（表明真菌参与土壤食物网的分解通道的程度），而线虫指数则更大。非蛇纹石栖息地的指数（56.2±3.7）大于蛇纹石栖息地（40.2±2.9），表明主要碎屑消费者的数量和活动。一项非度量多维标度散点图显示，线虫群落通过方差的多元排列多元分析而聚集到蛇形和非蛇形生境中。Ca / Mg比例是线虫群落中变化最大的部分：envfit占位点之间变化的90％。此外，蛇纹石栖息地中的Filenchus，Malenchus，Mesodorylaimus，Monhystera，Paratylenchus，Plectus，Prodesmodora，Teratocephalus和Tripyla）比非蛇纹石栖息地要大，五个分类单元（Alaimus，Bastiania，Cervidellus，Diptherophora和Rhabditidae）也要大。非蛇纹石比蛇纹石中的蛇纹石通过指示剂种类分析。尽管我们的研究是一个很小的样本量和单位，但我们的发现表明线虫群落的结构反映了蛇纹石土壤的理化特性。