Database for meta-analysis of herbivore impacts on plant-soil feedbacks

We conducted a meta-analysis to test for an interaction between plant-soil feedbacks and herbivory, including effects on the magnitude and direction of feedbacks, herbivore consumption and herbivore growth.
 We identified 197 studies to address herbivore impacts on plant-soil feedbacks and 189 studies to address plant-soil impacts on herbivores. We calculated Hedge’s D values to assess three questions: 1) What is the plant-soil feedback value of plants exposed to herbivory or no herbivory? 2) What is the growth or biomass of herbivores feeding on plants exposed to home or away soils in plant-soil feedback studies? 3) How much plant tissue is consumed by herbivores on plants grown in home or away soils?
 
We found an overall significant weak negative effect of herbivory on plant-soil feedbacks that varied by plant functional type. In legumes herbivory drove plant-soil feedbacks from positive to negative, but herbivory on forbs further decreased negative feedbacks.  Herbivore consumption ...

本研究开展了一项元分析，以检验植物-土壤反馈（plant-soil feedbacks）与植食作用之间的交互效应，涵盖反馈效应的强度与方向、植食者取食量以及植食者生长等方面的影响。
本研究共筛选得到197项聚焦植食作用对植物-土壤反馈影响的研究，以及189项聚焦植物-土壤反馈对植食者影响的研究。我们通过计算赫奇斯D值（Hedge’s D）来解答三个核心问题：1）经历植食作用与未经历植食作用的植物，其植物-土壤反馈值分别为多少？2）在植物-土壤反馈相关研究中，取食于本土土壤或异地土壤培育的植物的植食者，其生长状况或生物量如何？3）生长于本土土壤或异地土壤的植物，其被植食者取食的组织量为多少？

本研究发现，植食作用对植物-土壤反馈整体存在显著的微弱负向效应，且该效应因植物功能型（plant functional type）而异。在豆科植物中，植食作用可使植物-土壤反馈由正向转为负向；而在杂类草（forbs）上，植食作用会进一步削弱其负向反馈。植食者取食量……