Interactions between functional groups of soil fauna and plants are poorly explored although they drive functional processes such as nutrient availability and therefore plant performance. Here, we investigated the separated and combined effects of two collembolan functional groups on soil properties and growth of Lolium perenne, a typical grass species from temperate grasslands. Under microcosm conditions, we established four treatments based on the presence and combination of two collembolan functional groups: (1) control without Collembola; (2) epedaphic species; (3) euedaphic species; (4) epedaphic + euedaphic species. After five months of experiment, we measured the effect of those treatments on both nutritional and morphological variables of L. perenne and on soil properties. Collembolan presence stimulated plant performance. Individuals of L. perenne growing with euedaphic species presented higher numbers of leaves and nutrient contents compared with individuals growing with epedaphic species. Further, the combination of both collembolan functional groups enhanced plant performance and soil nutrient availability, demonstrating that a functionally diversified soil fauna assemblage cause overyielding of ecological processes. Our results provide evidences of complementarity interactions between different functional groups of soil fauna causing overyielding of primary production.

中文翻译：

---

功能性弹尾花组合在多年生黑麦草中诱导不同的植物反应

尽管土壤动物群和植物的功能群之间的相互作用推动了营养物质的有效性等功能过程，从而推动了植物的性能，但它们之间的相互作用却很少被探索。在这里，我们研究了两种弹跳虫功能组对土壤性质和多年生黑麦草（一种来自温带草原的典型草种）生长的分离和组合影响。在微观条件下，我们根据两个弹尾虫功能团的存在和组合建立了四种处理方法：（1）没有弹尾虫的对照；(2) 表皮物种；(3) 真植种；(4) 土生菌+真土生种。经过五个月的实验，我们测量了这些处理对多年生黑麦草的营养和形态变量以及土壤特性的影响。Collembolan 的存在刺激了植物的性能。L. 个人 与种植真土壤植物的个体相比，种植真植物物种的多年生植物具有更高的叶子数量和营养成分。此外，两种弹跳虫功能组的组合增强了植物性能和土壤养分可用性，表明功能多样化的土壤动物群落导致生态过程的过度生产。我们的研究结果提供了土壤动物不同功能群之间互补相互作用的证据，导致初级生产的过度生产。证明功能多样化的土壤动物群会导致生态过程的过度生产。我们的研究结果提供了土壤动物不同功能群之间互补相互作用的证据，导致初级生产的过度生产。证明功能多样化的土壤动物群会导致生态过程的过度生产。我们的研究结果提供了土壤动物不同功能群之间互补相互作用的证据，导致初级生产的过度生产。