Asian jumping worms (Amynthas spp.) are recent invaders of Upper Midwest forests. Research has highlighted the impacts of Amynthas earthworms on soil biogeochemistry and structure, and field observations suggest that Amynthas spp. decrease litter horizon depth and alter plant communities. However, the extent to which Amynthas spp. effects vary among forest types and with worm density and the mechanisms driving these effects are unknown. We conducted a 3-month tree seedling study to evaluate the effects of Amynthas spp. on tree seedling growth and a mesocosm field experiment to evaluate Amynthas spp. effects on soil carbon and nutrient cycling, soil structure, and leaf litter decomposition rates across forest types. In the seedling study, Amynthas spp. enhanced the growth of sugar maple and European buckthorn seedlings and decreased the growth of white oak seedlings. These effects were due to Amynthas spp.-induced changes in soil properties. In the mesocosm study, as Amynthas spp. density increased, carbon mineralization and carbon, nitrogen, and phosphorus availability increased in white oak forest soils and decreased in sugar maple forest soils, while decomposition rates of European buckthorn litter increased as Amynthas spp. density increased. Amynthas spp. altered soil structure similarly across all forest soil types. Taken together, our results suggest that Amynthas spp. have the potential to alter forest ecosystem dynamics via feedbacks among tree species, seedlings, and soil biogeochemistry. However, Amynthas spp. effects on tree seedlings and forest soils are largely context-dependent, and the direction and magnitude of these effects are mediated by tree species.

亚洲跳跃蠕虫（Amynthas spp。）是中西部中西部森林的近期入侵者。研究突出了yn虫对土壤生物地球化学和结构的影响，现场观察表明，yn虫属。减少垫料层深度并改变植物群落。但是，Amynthas spp的程度。不同森林类型和蠕虫密度的影响不同，导致这些影响的机制尚不清楚。我们进行了为期3个月的树苗研究，以评估Amynthas spp的影响。树苗生长的研究及介观田间试验以评价羊膜spp。对不同森林类型的土壤碳和养分循环，土壤结构以及凋落物分解速率的影响。在幼苗研究中，Amynthas spp。促进了糖枫和欧洲沙棘幼苗的生长，减少了白橡树幼苗的生长。这些影响归因于Amynthas spp。引起的土壤性质变化。在中观研究中，作为Amynthas spp。白橡林土壤密度增加，碳矿化和碳，氮和磷的有效性增加，而糖枫林土壤的碳，氮和磷的利用率降低，而欧洲沙棘凋落物的分解率随Amynthas spp的增加而增加。密度增加。Amynthasspp。在所有森林土壤类型中，土壤结构的变化相似。两者合计，我们的结果表明Amynthas spp。有可能通过树种，幼苗和土壤生物地球化学之间的反馈来改变森林生态系统的动态。然而，Amynthas spp。对树苗和森林土壤的影响在很大程度上取决于环境，这些影响的方向和程度由树种介导。