Plant - soil fauna interactions: soil feedback mechanisms in grassland of different diversity

植物-土壤动物相互作用：不同多样性草地的土壤反馈机制

• 批准号: 172023813
• 负责人: Professor Dr. Nico Eisenhauer
• 金额: --
• 依托单位: Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv)
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/172023813?language=en
• 关键词: Plant; soil; fauna; interactions; feedback

Recent long-term studies in temperate grassland suggest that aboveground plant diversity loss leads to belowground extinction cascades and pronounced deterioration of fundamental belowground functions after a distinct time-lag. These findings suggest that the negative diversity loss – function relationship is driven to a large extent by soil feedback mechanisms. The main task of the present proposal is to disentangle the mechanisms underlying the plant diversity effects observed in the first eight years of the Jena Experiment by focusing on soil feedback mechanisms shaping the diversity – functioning relationship. Being involved and constituting fundamental parts in all major experiments the proposed project has five major goals: (1) Investigate effects of plant trait diversity as well as trait- and plant-specific impacts on soil microorganisms and soil fauna. (2) Investigate the role of belowground resources for the diversity – function relationship. (3) Follow the effects of plant species and functional group diversity on long-term changes in soil microorganisms and soil fauna. (4) Investigate changes in soil microorganisms and soil fauna of plant communities of different diversity invaded by plants. (5) Investigate the role of soil fauna for plant succession and aboveground multitrophic interactions in a plant diversity gradient. Overall, the project integrates belowground biota as response variables and driving forces of plant communities of different diversity and aims at a more comprehensive and mechanistic understanding of aboveground – belowground interrelationships.

最近的长期质疑的草地表明，在不同的时间段之后，对地下灭绝级联的多样性损失和明显的地下地面损失提案是在第八年内观察到的植物多样化，以塑造多样性的土壤反馈机制动物群（4）研究植物侵入不同多样性的土壤微生物和动物群落的变化（5）研究了植物继承的作用，而Avoveground的多肉类相互作用则在植物多样性梯度中作为响应变量和驱动福克斯的植物多样性梯度。不同多样性和目标的植物群落和对地上的机械理解 - 地下相互关系。